GB 16280-1996 Technical requirements and test methods for linear heat-sensing fire detectors
Some standard content:
National Standard of the People's Republic of China
Technical requirements and test methods for line type heat detectors1Subject content and scope of application
GB16280-1996
This standard specifies the technical requirements, test methods and markings for line type heat detectors (hereinafter referred to as detectors). This standard is applicable to detectors used in general industrial and civil buildings, and also to detectors used in general outdoor environments. For detectors used in special environments and with special technical requirements, this standard shall also be implemented, except for special parts that shall be separately specified by relevant standards.
2 Reference standards
G32423.1 Basic environmental test procedures for electric and electronic products Test A: Low temperature test method GB2423.2 Basic environmental test procedures for electric and electronic products Test B: High temperature test method GB2423.3 Basic environmental test procedures for electric and electronic products Test Ca: Steady state damp heat test method GB2423.10 Basic environmental test procedures for electric and electronic products Test Fc: Vibration (sinusoidal) test method G34716 Technical requirements and test methods for point-type temperature sensitive fire detectors 3 Product model compilation
3.1 Product model compilation principles
Detectors are modeled according to their product characteristics, application scope, structural features, main parameters, etc. 3.2 Product model compilation method
3.2.1 Example
Manufacturer number and design serial number
Main parameters
Temperature sensing method code
Structural feature code
Application range feature code
Temperature sensing characteristic code
Detector code
3.2.2 Fire protection product classification code
State Technical Supervision Bureau approved the fire protection product classification code on April 5, 1996
1996-11-01 implementation
J (etc.)—fire alarm equipment.
3.2.3 Detector code
T (detection)—fire detector.
3.2.4 Temperature sensing characteristic code
W (temperature)—temperature sensing fire detector.
3.2.5 Application range Characteristic code
N(internal)—internal type;
GB162801996
W(external)—outdoor type (when there is no letter in this position in the model, it means universal type), etc. 3.2.6 Structural characteristic code
L(cable)—one-line type cable type:
G(tube)—one-line type tube type.
3.2.7 Temperature sensing mode code
D(fixed)—fixed temperature:
differential)—differential excitation.
3.2.8 Main parameters
Fixed temperature detectors use numbers (such as 70, 85, etc.) to indicate the rated action level: differential temperature detectors use mother (A, B, C) to indicate the first, second, and third level sensitivity levels. 3.2.9 Manufacturer number and design serial number
Street product manufacturers define it by themselves.
4 Technical requirements
4.1 When a fire occurs on site, the detector shall accurately send a fire alarm signal to the fire alarm controller. 4.2 The detector shall consist of a sensitive element (sensitive cable or air pipe, etc., hereinafter referred to as the sensor) and a connecting box body (hereinafter referred to as the box body) connected thereto.
4.3 The appearance of the detector shall comply with the following provisions: 1. The surface shall be free of mechanical defects such as corrosion, coating shedding, blistering, scratches, blemishes, burrs, and hard bending; 2. The text symbols and signs are clear and the structure is not loose. 4.4 The electrical wiring inside and outside the detector box shall be connected by wiring terminals (if socket-type wiring is used, there shall be a locking device). The wiring terminals shall be able to reliably connect wires with a cross-sectional area of 0.5 to 1.5 mm, and tools shall be used to connect and disconnect the wires. The inlet and outlet ports on the box body shall be sealed and dustproof.
4.5 The action performance of the detector shall meet the following requirements: 4.5.1 Constant temperature detectorwww.bzxz.net
4.5.1.1 Action temperature
The action degree of the detector shall be within the range of 55～140℃. The manufacturer shall give the rated action temperature value of a product in its product manual and allow a ±10% error between this determined value and the actual temperature value, but it shall not be lower than 55℃. 4.5.1.2 Non-action temperature
The sensor of the detector shall not act for 30 minutes in a temperature environment where its rated action temperature value is reduced by 30%. 4.5.1.3 Response time
The response time of the detector shall be tested according to the corresponding test methods according to different rated operating temperatures. The following requirements apply: 70℃ and below shall not be less than 20s
71~85℃ shall not be more than 30s
86~100℃ shall not be more than 40s;
100℃ and above shall not be more than 20s.
GB 16280-1996
4.5.1.4 For fixed temperature detectors whose operating characteristics are determined by the controller, the controller may set the operating temperature and non-operating temperature of the detector according to the above provisions and shall meet the requirements of the response time. 4.5.2 Differential temperature detection
4.5.2.1 The sensitivity level of the detector shall be specified by the manufacturer in its product manual. 4.5.2.2 Non-action test, , . : , the detectors with three levels of sensitivity shall be excited at the heating rate of 1C/min, 2℃/min, 3℃/min respectively, and shall not act within 15min;
4.5.2.3 Action test, , . The detectors with three levels of sensitivity shall be excited at the heating rate of 10C/min, 20C/min. 30℃/min respectively, and shall act within 1min.
4.5.2.4 For differential temperature detectors whose action characteristics are determined by the controller, the sensitivity of the detector can be set by the controller and shall meet the requirements of 4.5.2.2 and 4.5.2.3.
4.6 Under normal atmospheric conditions, the insulation resistance between all electrical contacts (except the grounding point) of the detector and the outer shell (skin) shall be not less than 100 Mn.
4.7 After being kept under normal atmospheric conditions for 24 hours, all electrical contacts (except the grounding point) of the detector and the outer shell (skin) shall be able to withstand an AC voltage with a frequency of 50Hz and a withstand voltage test lasting 60s. The test voltage shall comply with the provisions of Table 1. During the test, the detector shall not have surface flying arcs, sweeping discharges or breakdown. Table 1
Rated operating voltage of the detector
Test voltage
4.8 The detector shall be able to withstand the vibration test specified in Table 2. During and after the test, the following requirements shall be met: During the test, no alarm or malfunction shall occur; After the test, the detector shall have no mechanical damage or structural looseness. After the test, the test shall meet the requirements specified in Article 5.3. Table 2
Test name
Vibration test
Test parameters
Frequency cycle range
Acceleration amplitude
Frequency sweep rate
Vibration time
Vibration direction
No dangerous frequency
Fixed frequency test frequency
Test conditions
10-15010 Hz
9.81 m/sa
1 octave/min
Vertical to fixed plane
Working state
Normal working state
4.9 The detector shall be able to withstand the various climatic environment tests specified in Table 3. During and after the test, it shall meet the following requirements: During the test, there shall be no fire alarm or malfunction phenomenon; b. Test quality, according to the provisions of Article 5.3, the test shall meet the requirements. V
Test name
Steady-state damp heat test
Low-temperature test
5. Test method
Test parameters
Relative humidity
5.1 General requirements for the test
GB 16280-1996
Test conditions
30℃ (-10℃ for indoor type)
1 h (2 h for indoor type)
Working state
Normal working state
Normal working state
5.1.1 The detectors shall be tested from top to bottom in the order specified in Table 4. The test samples shall be 5 detectors. 5.1.2 If there is no explanation in the relevant provisions, all tests shall be carried out under the following normal atmospheric conditions: air temperature: 15~~35℃, relative humidity: 45%~75%; air pressure: 86~106 kPa. 5.7.3 If there is no explanation in the relevant provisions, the allowable error of each test data is ±5%. Table 4 Test Procedure 5.2 Structural and Appearance Inspection
Structural and Appearance Inspection
Operation Performance
Insulation Resistance
Constant Wet Heat
Sample Number
Inspect the structure and appearance of the detector. First check the appearance, then open the box to check the inside, the results should meet the requirements of 4.2~~4.4.
5.3 Operation Performance Test
5.3.1 Operation Performance Test of Constant Temperature Detector5.3.1.1 Operation Temperature Test
Connect a 50m long sensor section (including the box and terminal box, etc.) of the detector to the control and indication equipment to put it in a normal monitoring state. Then put a 1m long section of the sensor 0.3m away from the terminal box into the incubator, and raise the temperature at a rate of 1℃/min under the conditions of the initial temperature of the incubator airflow of 25℃ and the flow rate of 0.8±0.1m/s until the detector operates and sends out a fire alarm signal, and record this...-operation temperature.
The test results shall comply with the provisions of 4.5.1.1. The test equipment is a standard temperature chamber, which shall comply with the provisions of Article 4.2.4 of GB4716--93. 5.3.1.2 Non-operation temperature test
Put a section of the detector with a length of not less than 10m into a constant temperature chamber, and connect the outside (connected to the box body and terminal box, etc.) to the control and indicating equipment to put it in a normal monitoring state. Adjust the constant temperature chamber to the non-operation temperature value of the corresponding rated operating temperature of the detector, and then keep the constant temperature at 34
30min.
The test results shall comply with the provisions of 4.5.1.2. GB16280-1996
The test equipment shall comply with the provisions of Chapter 4 of GB2423.2~-81. 5.3.1.3 Response time test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. For samples with a rated operating temperature below 100°C, bend a 1m long section of the sensor 0.3m away from the terminal box and quickly place it in a 1000ml beaker containing 800ml boiling water (the wattage of the electric furnace should be able to ensure that the water continues to boil during the test), and start timing at the same time until the detector operates and sends out a fire alarm signal, and record the response time; for samples with a rated operating temperature above 100°C, ignite a common gas lighter (non-windproof type, filled with butane gas) on a 1m long section of the sensor 0.3m away from the terminal box and adjust the flame height to 25±5mm, burn the middle point with the center of the flame, and start timing at the same time until the detector operates and sends out an alarm signal, and record the response time. The test results should comply with the provisions of 4.5.1.3. The test equipment is: a 1000ml beaker, an electric furnace, a standard stopwatch, and a gas lighter. 5.3.2 Action performance test of differential temperature detector 5.3.2.1 Non-action test
Connect the detector to the control and indication equipment to put it in a normal monitoring state. Put a sensor with a length of 90±10m in the incubator. Under the conditions of the initial airflow temperature of 25( and the flow rate of 0.8±0.1m/s, heat up at the rates of 1℃/min, 2℃/min, and 3℃/min, respectively, and start timing at the same time. After 15min, stop the test and record the test results. The test results should comply with the provisions of 4.5.2.2. 5.3.2.2 Action test
Connect the detector to the control and indication equipment to put it in a normal monitoring state. Put a sensor not more than 20m long in the incubator. Under the conditions of the initial airflow temperature of 25( and the flow rate of 0.8±0.1m/s, heat up at the rates of 10℃/min, 20C/min, and 30C/min, respectively, and start timing at the same time. Stop the test after 1min, Record the test results. The test results shall comply with the provisions of 4.5.2.3. 5.3.2.3 The standard temperature chamber used for the test equipment shall comply with the provisions of 4.2.4 of GB4716-93. 5.4 Insulation resistance test
5.4.1 Install the detector on a metal plate (voltage ground terminal) of the insulation resistance test equipment, short-circuit all electrical contacts of the detector (except the grounding point) in positive order, and apply a DC voltage of 500±50V between the short-circuit point and the metal plate for 60±5s, then measure the insulation resistance.
The measurement results shall comply with the provisions of Article 4.6.
5.4.2 The test equipment shall comply with the requirements of Article 4.11.4 of GB4716-93. 5.5 Withstand voltage test
5.5.1 Place the detector at a temperature of 25±2 C, place it in a damp heat test box with a relative humidity of no more than 70% for 24 hours, then take it out and install it on the metal test board (voltage ground terminal) of the endurance test equipment. Short-circuit all the contacts of the detector (except the grounding point) and apply the test voltage between the short-circuit point and the metal test board according to the following provisions: a,
When the rated working voltage does not exceed 50V:
The test voltage is increased from 0V to 500V at a rate of 100~500V/s and maintained for 60±5s; h, When the rated working voltage exceeds 50V:
The test voltage is increased from 0V to 1500V at a rate of 100~500V/s and maintained for 60±5s. The test period shall comply with the provisions of Article 4.7.
5.5.2 The test equipment shall comply with the provisions of GB4716-93 4 .12.4. 5.6 Vibration test
5.6.1 Fix the detector on the vibration table at a convenient position and connect it to the control and indicating equipment to put it in normal monitoring state. 135
GB16280—1996
Perform a frequency sweep cycle in the frequency range of 10～150～10Hz with an acceleration amplitude of 9.81m/s2 and a sweep rate of 1 octave/min to check whether there is a dangerous frequency. If there is a dangerous frequency, a fixed-frequency vibration test with an acceleration amplitude of 9.81m/s and a duration of 90±1min is carried out at this dangerous frequency; if there is no dangerous frequency, a fixed-frequency vibration test with a frequency of 150Hz, an acceleration amplitude of 9.81m/s2 and a duration of 90±1min is carried out. The test results should meet the requirements of Article 4.8.
5.6.2 The test equipment shall comply with the provisions of Article 3.1 of GB2423.10-81. 5.7 Steady-state humidity test
5.7.1 After drying the detector in a drying oven at a temperature of 40±5°C for 24 hours, immediately move it to a humidity test chamber, and connect the detector to the control and indication equipment to put it in a normal monitoring state. Adjust the humidity test chamber so that the detector is at a temperature of 40±2°C and a relative humidity of 90%~～95% for 24 hours, then take it out and move it to an environment with a temperature of 15～25 (. Relative humidity is not more than 70% to recover for 1 hour. The test results shall comply with the provisions of Article 4.9.
5.7.2 The test equipment (humidity test chamber) shall comply with the provisions of Chapter 2 of GB2423.3-81. 5.8 Low temperature test
5.8.1 Connect the detector to the control and indication equipment The equipment is turned on and put into normal monitoring state. Keep it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1 hour. For indoor detectors, place them in a low temperature test box with a temperature of -10±2°C to stabilize for 2 hours; for outdoor and general-purpose detectors, place them in a low temperature test box with a temperature of -302°C to stabilize for 1 hour. After the low temperature stabilization period, turn off the control and indication equipment, take out the detector, and restore it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1-2 hours. h.
The test results shall comply with the corresponding provisions of Article 4.9. 5.8.2 The test equipment (low temperature test chamber) shall comply with the provisions of Chapter 4 of GB2423.1-81. 6 Marking
6.1 General requirements
The detector shall have clear and durable markings on the box body, including nameplate and quality inspection mark. 6.2 Nameplate
The nameplate shall include the following contents:
a. Product name;
b. Product model;
Manufacturer name and trademark;
Production year, month and product number.
6.3 Quality inspection mark
Code and number of this standard;
Name of the inspection department;
Qualification mark.
Additional instructions:
316280-1996
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Sixth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shenyang Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Tong Shuxi and Liu Zhongshun. 4374.
5.3 Action performance test
5.3.1 Action performance test of fixed temperature detector 5.3.1.1 Action temperature test
Connect a 50m long sensor section (including the box body and terminal box, etc.) of the detector to the control and indicating equipment to put it in a normal monitoring state. Then put a 1m long section of the sensor 0.3m away from the terminal box into the incubator. Under the conditions of the initial temperature of the incubator airflow of 25C and the flow rate of 0.8±0.1m/s, heat it at a rate of 1℃/min until the detector is activated and a fire alarm signal is issued. At the same time, record this...-action temperature.
The test results shall comply with the provisions of 4.5.1.1. The test equipment is a standard incubator and shall comply with the provisions of Article 4.2.4 of GB4716--93. 5.3.1.2 Non-operating temperature test
Put a section of the detector with a length of not less than 10m into a constant temperature box, and connect the outside (connected to the box body and terminal box, etc.) to the control and indicating equipment to put it in a normal monitoring state. Adjust the constant temperature box to the non-operating temperature value corresponding to the rated operating temperature of the detector, and then keep the constant temperature at 34
30min.
The test result shall comply with the provisions of 4.5.1.2. GB16280-1996
The test equipment shall comply with the provisions of Chapter 4 of GB2423.2~-81. 5.3.1.3 Response time test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. For samples with a rated operating temperature below 100°C, bend a 1m long section of the sensor 0.3m away from the terminal box and quickly place it in a 1000ml beaker containing 800ml boiling water (the wattage of the electric furnace should be able to ensure that the water continues to boil during the test), and start timing at the same time until the detector is activated and sends out a fire alarm signal, and record the response time; for samples with a rated operating temperature above 100°C, ignite a common gas lighter (non-windproof type, filled with butane gas) on a 1m long section of the sensor 0.3m away from the terminal box and adjust the flame height to 25±5mm, burn the middle point with the center of the flame, and start timing at the same time until the detector is activated and sends out an alarm signal, and record the response time. The test results should comply with the provisions of 4.5.1.3. The test equipment is: a 1000ml beaker, an electric furnace, a standard stopwatch, and a gas lighter. 5.3.2 Action performance test of differential temperature detector 5.3.2.1 Non-action test
Connect the detector to the control and indication equipment to put it in a normal monitoring state. Put a sensor with a length of 90±10m in the incubator. Under the conditions of the initial airflow temperature of 25( and the flow rate of 0.8±0.1m/s, heat up at the rates of 1℃/min, 2℃/min, and 3℃/min, respectively, and start timing at the same time. After 15min, stop the test and record the test results. The test results should comply with the provisions of 4.5.2.2. 5.3.2.2 Action test
Connect the detector to the control and indication equipment to put it in a normal monitoring state. Put a sensor not more than 20m in length in the incubator. Under the conditions of the initial airflow temperature of 25( and the flow rate of 0.8±0.1m/s, heat up at the rates of 10℃/min, 20C/min, and 30C/min, respectively, and start timing at the same time. Stop the test after 1min, Record the test results. The test results shall comply with the provisions of 4.5.2.3. 5.3.2.3 The standard temperature chamber used for the test equipment shall comply with the provisions of 4.2.4 of GB4716-93. 5.4 Insulation resistance test
5.4.1 Install the detector on a metal plate (voltage ground terminal) of the insulation resistance test equipment, short-circuit all electrical contacts of the detector (except the grounding point) in positive order, and apply a DC voltage of 500±50V between the short-circuit point and the metal plate for 60±5s, then measure the insulation resistance.
The measurement results shall comply with the provisions of Article 4.6.
5.4.2 The test equipment shall comply with the requirements of Article 4.11.4 of GB4716-93. 5.5 Withstand voltage test
5.5.1 Place the detector at a temperature of 25±2 C, place it in a damp heat test box with a relative humidity of no more than 70% for 24 hours, then take it out and install it on the metal test board (voltage ground terminal) of the endurance test equipment. Short-circuit all the contacts of the detector (except the grounding point) and apply the test voltage between the short-circuit point and the metal test board according to the following provisions: a,
When the rated working voltage does not exceed 50V:
The test voltage is increased from 0V to 500V at a rate of 100~500V/s and maintained for 60±5s; h, When the rated working voltage exceeds 50V:
The test voltage is increased from 0V to 1500V at a rate of 100~500V/s and maintained for 60±5s. The test period shall comply with the provisions of Article 4.7.
5.5.2 The test equipment shall comply with the provisions of GB4716-93 4 .12.4. 5.6 Vibration test
5.6.1 Fix the detector on the vibration table at a convenient position and connect it to the control and indicating equipment to put it in normal monitoring state. 135
GB16280—1996
Perform a frequency sweep cycle in the frequency range of 10～150～10Hz with an acceleration amplitude of 9.81m/s2 and a sweep rate of 1 octave/min to check whether there is a dangerous frequency. If there is a dangerous frequency, a fixed-frequency vibration test with an acceleration amplitude of 9.81m/s and a duration of 90±1min is carried out at this dangerous frequency; if there is no dangerous frequency, a fixed-frequency vibration test with a frequency of 150Hz, an acceleration amplitude of 9.81m/s2 and a duration of 90±1min is carried out. The test results should meet the requirements of Article 4.8.
5.6.2 The test equipment shall comply with the provisions of Article 3.1 of GB2423.10-81. 5.7 Steady-state humidity test
5.7.1 After drying the detector in a drying oven at a temperature of 40±5°C for 24 hours, immediately move it to a humidity test chamber, and connect the detector to the control and indication equipment to put it in a normal monitoring state. Adjust the humidity test chamber so that the detector is at a temperature of 40±2°C and a relative humidity of 90%~～95% for 24 hours, then take it out and move it to an environment with a temperature of 15～25 (. Relative humidity is not more than 70% to recover for 1 hour. The test results shall comply with the provisions of Article 4.9.
5.7.2 The test equipment (humidity test chamber) shall comply with the provisions of Chapter 2 of GB2423.3-81. 5.8 Low temperature test
5.8.1 Connect the detector to the control and indication equipment The equipment is turned on and put into normal monitoring state. Keep it in an environment with a temperature of 15-25℃ and a relative humidity of no more than 70% for 1 hour. For indoor detectors, place them in a low temperature test box with a temperature of -10±2℃ to stabilize for 2 hours; for outdoor and general-purpose detectors, place them in a low temperature test box with a temperature of -302℃ to stabilize for 1 hour. After the low temperature stabilization period, turn off the control and indication equipment, take out the detector, and restore it in an environment with a temperature of 15-25℃ and a relative humidity of no more than 70% for 1-2 hours. h.
The test results shall comply with the corresponding provisions of Article 4.9. 5.8.2 The test equipment (low temperature test chamber) shall comply with the provisions of Chapter 4 of GB2423.1-81. 6 Marking
6.1 General requirements
The detector shall have clear and durable markings on the box body, including nameplate and quality inspection mark. 6.2 Nameplate
The nameplate shall include the following contents:
a. Product name;
b. Product model;
Manufacturer name and trademark;
Production year, month and product number.
6.3 Quality inspection mark
Code and number of this standard;
Name of the inspection department;
Qualification mark.
Additional instructions:
316280-1996
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Sixth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shenyang Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Tong Shuxi and Liu Zhongshun. 4374.
5.3 Action performance test
5.3.1 Action performance test of fixed temperature detector 5.3.1.1 Action temperature test
Connect a 50m long sensor section of the detector (including the box body and terminal box, etc.) to the control and indicating equipment to put it in a normal monitoring state. Then put a 1m long section of the sensor 0.3m away from the terminal box into the incubator. Under the conditions of the initial temperature of the incubator airflow of 25C and the flow rate of 0.8±0.1m/s, heat it at a rate of 1℃/min until the detector operates and sends out a fire alarm signal. At the same time, record this...-action temperature.
The test results should comply with the provisions of 4.5.1.1. The test equipment is a standard incubator and should comply with the provisions of Article 4.2.4 of GB4716--93. 5.3.1.2 Non-operating temperature test
Put a section of the detector with a length of not less than 10m into a constant temperature box, and connect the outside (connected to the box body and terminal box, etc.) to the control and indicating equipment to put it in a normal monitoring state. Adjust the constant temperature box to the non-operating temperature value corresponding to the rated operating temperature of the detector, and then keep the constant temperature at 34
30min.
The test result shall comply with the provisions of 4.5.1.2. GB16280-1996
The test equipment shall comply with the provisions of Chapter 4 of GB2423.2~-81. 5.3.1.3 Response time test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. For samples with a rated operating temperature below 100°C, bend a 1m long section of the sensor 0.3m away from the terminal box and quickly place it in a 1000ml beaker containing 800ml boiling water (the wattage of the electric furnace should be able to ensure that the water continues to boil during the test), and start timing at the same time until the detector operates and sends out a fire alarm signal, and record the response time; for samples with a rated operating temperature above 100°C, ignite a common gas lighter (non-windproof type, filled with butane gas) on a 1m long section of the sensor 0.3m away from the terminal box and adjust the flame height to 25±5mm, burn the middle point with the center of the flame, and start timing at the same time until the detector operates and sends out an alarm signal, and record the response time. The test results should comply with the provisions of 4.5.1.3. The test equipment is: a 1000ml beaker, an electric furnace, a standard stopwatch, and a gas lighter. 5.3.2 Action performance test of differential temperature detector 5.3.2.1 Non-action test
Connect the detector to the control and indication equipment to put it in a normal monitoring state. Put a sensor with a length of 90±10m in the incubator. Under the conditions of the initial airflow temperature of 25( and the flow rate of 0.8±0.1m/s, heat up at the rates of 1℃/min, 2℃/min, and 3℃/min, respectively, and start timing at the same time. After 15min, stop the test and record the test results. The test results should comply with the provisions of 4.5.2.2. 5.3.2.2 Action test
Connect the detector to the control and indication equipment to put it in a normal monitoring state. Put a sensor not more than 20m long in the incubator. Under the conditions of the initial airflow temperature of 25( and the flow rate of 0.8±0.1m/s, heat up at the rates of 10℃/min, 20C/min, and 30C/min, respectively, and start timing at the same time. Stop the test after 1min, Record the test results. The test results shall comply with the provisions of 4.5.2.3. 5.3.2.3 The standard temperature chamber used for the test equipment shall comply with the provisions of 4.2.4 of GB4716-93. 5.4 Insulation resistance test
5.4.1 Install the detector on a metal plate (voltage ground terminal) of the insulation resistance test equipment, short-circuit all electrical contacts of the detector (except the grounding point) in positive order, and apply a DC voltage of 500±50V between the short-circuit point and the metal plate for 60±5s, then measure the insulation resistance.
The measurement results shall comply with the provisions of Article 4.6.
5.4.2 The test equipment shall comply with the requirements of Article 4.11.4 of GB4716-93. 5.5 Withstand voltage test
5.5.1 Place the detector at a temperature of 25±2 C, place it in a damp heat test box with a relative humidity of no more than 70% for 24 hours, then take it out and install it on the metal test board (voltage ground terminal) of the endurance test equipment. Short-circuit all the contacts of the detector (except the grounding point) and apply the test voltage between the short-circuit point and the metal test board according to the following provisions: a,
When the rated working voltage does not exceed 50V:
The test voltage is increased from 0V to 500V at a rate of 100~500V/s and maintained for 60±5s; h, When the rated working voltage exceeds 50V:
The test voltage is increased from 0V to 1500V at a rate of 100~500V/s and maintained for 60±5s. The test period shall comply with the provisions of Article 4.7.
5.5.2 The test equipment shall comply with the provisions of GB4716-93 4 .12.4. 5.6 Vibration test
5.6.1 Fix the detector on the vibration table at a convenient position and connect it to the control and indicating equipment to put it in normal monitoring state. 135
GB16280—1996
Perform a frequency sweep cycle in the frequency range of 10～150～10Hz with an acceleration amplitude of 9.81m/s2 and a sweep rate of 1 octave/min to check whether there is a dangerous frequency. If there is a dangerous frequency, a fixed-frequency vibration test with an acceleration amplitude of 9.81m/s and a duration of 90±1min is carried out at this dangerous frequency; if there is no dangerous frequency, a fixed-frequency vibration test with a frequency of 150Hz, an acceleration amplitude of 9.81m/s2 and a duration of 90±1min is carried out. The test results should meet the requirements of Article 4.8.
5.6.2 The test equipment shall comply with the provisions of Article 3.1 of GB2423.10-81. 5.7 Steady-state humidity test
5.7.1 After drying the detector in a drying oven at a temperature of 40±5°C for 24 hours, immediately move it to a humidity test chamber, and connect the detector to the control and indication equipment to put it in a normal monitoring state. Adjust the humidity test chamber so that the detector is at a temperature of 40±2°C and a relative humidity of 90%~～95% for 24 hours, then take it out and move it to an environment with a temperature of 15～25 (. Relative humidity is not more than 70% to recover for 1 hour. The test results shall comply with the provisions of Article 4.9.
5.7.2 The test equipment (humidity test chamber) shall comply with the provisions of Chapter 2 of GB2423.3-81. 5.8 Low temperature test
5.8.1 Connect the detector to the control and indication equipment The equipment is turned on and put into normal monitoring state. Keep it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1 hour. For indoor detectors, place them in a low temperature test box with a temperature of -10±2°C to stabilize for 2 hours; for outdoor and general-purpose detectors, place them in a low temperature test box with a temperature of -302°C to stabilize for 1 hour. After the low temperature stabilization period, turn off the control and indication equipment, take out the detector, and restore it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1-2 hours. h.
The test results shall comply with the corresponding provisions of Article 4.9. 5.8.2 The test equipment (low temperature test chamber) shall comply with the provisions of Chapter 4 of GB2423.1-81. 6 Marking
6.1 General requirements
The detector shall have clear and durable markings on the box body, including nameplate and quality inspection mark. 6.2 Nameplate
The nameplate shall include the following contents:
a. Product name;
b. Product model;
Manufacturer name and trademark;
Production year, month and product number.
6.3 Quality inspection mark
Code and number of this standard;
Name of the inspection department;
Qualification mark.
Additional instructions:
316280-1996
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Sixth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shenyang Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Tong Shuxi and Liu Zhongshun. 437Under the condition of 1m/s, the temperature is raised at a rate of 1℃/min until the detector is activated and a fire alarm signal is issued, and the action temperature should be recorded at the same time.
The test results shall comply with the provisions of 4.5.1.1. The test equipment is a standard temperature box, which shall comply with the provisions of Article 4.2.4 of GB4716--93. 5.3.1.2 Non-action temperature test
Put a section of the sensor of the detector not less than 10m long into the constant temperature box, and connect the outside (connected to the box body and terminal box, etc.) to the control and indicating equipment to make it in a normal monitoring state. Adjust the constant temperature box to the non-action temperature value of the corresponding rated action temperature of the detector, and then keep the constant temperature at 34
30min.
The test results shall comply with the provisions of 4.5.1.2. GB16280-1996
The test equipment shall comply with the provisions of Chapter 4 of GB2423.2~-81. 5.3.1.3 Response time test
Connect the detector to the control and indicating equipment and put it in normal monitoring state. For samples with rated operating temperature below 100)C, bend a section of sensor 1m long 0.3m away from the terminal box and quickly put it into a beaker with a volume of 1000ml and 800ml boiling water (the wattage of the electric furnace should ensure that the water continues to boil during the test), and start timing at the same time until the detector is activated and sends out a fire alarm signal, and record the response time; for samples with rated operating temperature above 100C, ignite a common gas lighter (non-windproof type, filled with butane gas) on a section of sensor 1m long 0.3m away from the terminal box and adjust the flame height to 25±5mm, burn the middle point with the center of the flame, and start timing at the same time until the detector is activated and sends out an alarm signal, and record the response time. The test results should meet the requirements of 4.5.1.3. The test equipment is: a 1000ml beaker, an electric stove, a standard stopwatch, and a gas lighter. 5.3.2 Action performance test of differential temperature detector 5.3.2.1 Non-action test
Connect the detector to the control and indicating equipment to put it in normal monitoring state. Place a sensor with a length of 90 ± 10m in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 1°C/min, 2°C/min, and 3°C/min, respectively, and start timing at the same time. After 15 minutes, stop the test and record the test results. The test results should comply with the provisions of 4.5.2.2. 5.3.2.2 Action test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. Place a sensor not more than 20m long in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 10°C/min, 20C/min, and 30C/min, respectively, and start timing at the same time. Stop the test after 1 minute, Record the test results. The test results shall comply with the provisions of 4.5.2.3. 5.3.2.3 The standard temperature chamber used for the test equipment shall comply with the provisions of 4.2.4 of GB4716-93. 5.4 Insulation resistance test
5.4.1 Install the detector on a metal plate (voltage ground terminal) of the insulation resistance test equipment, short-circuit all electrical contacts of the detector (except the grounding point) in positive order, and apply a DC voltage of 500±50V between the short-circuit point and the metal plate for 60±5s, then measure the insulation resistance.
The measurement results shall comply with the provisions of Article 4.6.
5.4.2 The test equipment shall comply with the requirements of Article 4.11.4 of GB4716-93. 5.5 Withstand voltage test
5.5.1 Place the detector at a temperature of 25±2 C, place it in a damp heat test box with a relative humidity of no more than 70% for 24 hours, then take it out and install it on the metal test board (voltage ground terminal) of the endurance test equipment. Short-circuit all the contacts of the detector (except the grounding point) and apply the test voltage between the short-circuit point and the metal test board according to the following provisions: a,
When the rated working voltage does not exceed 50V:
The test voltage is increased from 0V to 500V at a rate of 100~500V/s and maintained for 60±5s; h, When the rated working voltage exceeds 50V:
The test voltage is increased from 0V to 1500V at a rate of 100~500V/s and maintained for 60±5s. The test period shall comply with the provisions of Article 4.7.
5.5.2 The test equipment shall comply with the provisions of GB4716-93 4 .12.4. 5.6 Vibration test
5.6.1 Fix the detector on the vibration table at a convenient position and connect it to the control and indicating equipment to put it in normal monitoring state. 135
GB16280—1996
Perform a frequency sweep cycle in the frequency range of 10～150～10Hz with an acceleration amplitude of 9.81m/s2 and a sweep rate of 1 octave/min to check whether there is a dangerous frequency. If there is a dangerous frequency, a fixed-frequency vibration test with an acceleration amplitude of 9.81m/s and a duration of 90±1min is carried out at this dangerous frequency; if there is no dangerous frequency, a fixed-frequency vibration test with a frequency of 150Hz, an acceleration amplitude of 9.81m/s2 and a duration of 90±1min is carried out. The test results should meet the requirements of Article 4.8.
5.6.2 The test equipment shall comply with the provisions of Article 3.1 of GB2423.10-81. 5.7 Steady-state humidity test
5.7.1 After drying the detector in a drying oven at a temperature of 40±5°C for 24 hours, immediately move it to a humidity test chamber, and connect the detector to the control and indication equipment to put it in a normal monitoring state. Adjust the humidity test chamber so that the detector is at a temperature of 40±2°C and a relative humidity of 90%~～95% for 24 hours, then take it out and move it to an environment with a temperature of 15～25 (. Relative humidity is not more than 70% to recover for 1 hour. The test results shall comply with the provisions of Article 4.9.
5.7.2 The test equipment (humidity test chamber) shall comply with the provisions of Chapter 2 of GB2423.3-81. 5.8 Low temperature test
5.8.1 Connect the detector to the control and indication equipment The equipment is turned on and put into normal monitoring state. Keep it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1 hour. For indoor detectors, place them in a low temperature test box with a temperature of -10±2°C to stabilize for 2 hours; for outdoor and general-purpose detectors, place them in a low temperature test box with a temperature of -302°C to stabilize for 1 hour. After the low temperature stabilization period, turn off the control and indication equipment, take out the detector, and restore it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1-2 hours. h.
The test results shall comply with the corresponding provisions of Article 4.9. 5.8.2 The test equipment (low temperature test chamber) shall comply with the provisions of Chapter 4 of GB2423.1-81. 6 Marking
6.1 General requirements
The detector shall have clear and durable markings on the box body, including nameplate and quality inspection mark. 6.2 Nameplate
The nameplate shall include the following contents:
a. Product name;
b. Product model;
Manufacturer name and trademark;
Production year, month and product number.
6.3 Quality inspection mark
Code and number of this standard;
Name of the inspection department;
Qualification mark.
Additional instructions:
316280-1996
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Sixth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shenyang Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Tong Shuxi and Liu Zhongshun. 437Under the condition of 1m/s, the temperature is raised at a rate of 1℃/min until the detector is activated and a fire alarm signal is issued, and the action temperature should be recorded at the same time.
The test results shall comply with the provisions of 4.5.1.1. The test equipment is a standard temperature box, which shall comply with the provisions of Article 4.2.4 of GB4716--93. 5.3.1.2 Non-action temperature test
Put a section of the sensor of the detector not less than 10m long into the constant temperature box, and connect the outside (connected to the box body and terminal box, etc.) to the control and indicating equipment to make it in a normal monitoring state. Adjust the constant temperature box to the non-action temperature value of the corresponding rated action temperature of the detector, and then keep the constant temperature at 34
30min.
The test results shall comply with the provisions of 4.5.1.2. GB16280-1996
The test equipment shall comply with the provisions of Chapter 4 of GB2423.2~-81. 5.3.1.3 Response time test
Connect the detector to the control and indicating equipment and put it in normal monitoring state. For samples with rated operating temperature below 100)C, bend a section of sensor 1m long 0.3m away from the terminal box and quickly put it into a beaker with a volume of 1000ml and 800ml boiling water (the wattage of the electric furnace should ensure that the water continues to boil during the test), and start timing at the same time until the detector is activated and sends out a fire alarm signal, and record the response time; for samples with rated operating temperature above 100C, ignite a common gas lighter (non-windproof type, filled with butane gas) on a section of sensor 1m long 0.3m away from the terminal box and adjust the flame height to 25±5mm, burn the middle point with the center of the flame, and start timing at the same time until the detector is activated and sends out an alarm signal, and record the response time. The test results should meet the requirements of 4.5.1.3. The test equipment is: a 1000ml beaker, an electric stove, a standard stopwatch, and a gas lighter. 5.3.2 Action performance test of differential temperature detector 5.3.2.1 Non-action test
Connect the detector to the control and indicating equipment to put it in normal monitoring state. Place a sensor with a length of 90 ± 10m in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 1°C/min, 2°C/min, and 3°C/min, respectively, and start timing at the same time. After 15 minutes, stop the test and record the test results. The test results should comply with the provisions of 4.5.2.2. 5.3.2.2 Action test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. Place a sensor not more than 20m long in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 10°C/min, 20C/min, and 30C/min, respectively, and start timing at the same time. Stop the test after 1 minute, Record the test results. The test results shall comply with the provisions of 4.5.2.3. 5.3.2.3 The standard temperature chamber used for the test equipment shall comply with the provisions of 4.2.4 of GB4716-93. 5.4 Insulation resistance test
5.4.1 Install the detector on a metal plate (voltage ground terminal) of the insulation resistance test equipment, short-circuit all electrical contacts of the detector (except the grounding point) in positive order, and apply a DC voltage of 500±50V between the short-circuit point and the metal plate for 60±5s, then measure the insulation resistance.
The measurement results shall comply with the provisions of Article 4.6.
5.4.2 The test equipment shall comply with the requirements of Article 4.11.4 of GB4716-93. 5.5 Withstand voltage test
5.5.1 Place the detector at a temperature of 25±2 C, place it in a damp heat test box with a relative humidity of no more than 70% for 24 hours, then take it out and install it on the metal test board (voltage ground terminal) of the endurance test equipment. Short-circuit all the contacts of the detector (except the grounding point) and apply the test voltage between the short-circuit point and the metal test board according to the following provisions: a,
When the rated working voltage does not exceed 50V:
The test voltage is increased from 0V to 500V at a rate of 100~500V/s and maintained for 60±5s; h, When the rated working voltage exceeds 50V:
The test voltage is increased from 0V to 1500V at a rate of 100~500V/s and maintained for 60±5s. The test period shall comply with the provisions of Article 4.7.
5.5.2 The test equipment shall comply with the provisions of GB4716-93 4 .12.4. 5.6 Vibration test
5.6.1 Fix the detector on the vibration table at a convenient position and connect it to the control and indicating equipment to put it in normal monitoring state. 135
GB16280—1996
Perform a frequency sweep cycle in the frequency range of 10～150～10Hz with an acceleration amplitude of 9.81m/s2 and a sweep rate of 1 octave/min to check whether there is a dangerous frequency. If there is a dangerous frequency, a fixed-frequency vibration test with an acceleration amplitude of 9.81m/s and a duration of 90±1min is carried out at this dangerous frequency; if there is no dangerous frequency, a fixed-frequency vibration test with a frequency of 150Hz, an acceleration amplitude of 9.81m/s2 and a duration of 90±1min is carried out. The test results should meet the requirements of Article 4.8.
5.6.2 The test equipment shall comply with the provisions of Article 3.1 of GB2423.10-81. 5.7 Steady-state humidity test
5.7.1 After drying the detector in a drying oven at a temperature of 40±5°C for 24 hours, immediately move it to a humidity test chamber, and connect the detector to the control and indication equipment to put it in a normal monitoring state. Adjust the humidity test chamber so that the detector is at a temperature of 40±2°C and a relative humidity of 90%~～95% for 24 hours, then take it out and move it to an environment with a temperature of 15～25 (. Relative humidity is not more than 70% to recover for 1 hour. The test results shall comply with the provisions of Article 4.9.
5.7.2 The test equipment (humidity test chamber) shall comply with the provisions of Chapter 2 of GB2423.3-81. 5.8 Low temperature test
5.8.1 Connect the detector to the control and indication equipment The equipment is turned on and put into normal monitoring state. Keep it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1 hour. For indoor detectors, place them in a low temperature test box with a temperature of -10±2°C to stabilize for 2 hours; for outdoor and general-purpose detectors, place them in a low temperature test box with a temperature of -302°C to stabilize for 1 hour. After the low temperature stabilization period, turn off the control and indication equipment, take out the detector, and restore it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1-2 hours. h.
The test results shall comply with the corresponding provisions of Article 4.9. 5.8.2 The test equipment (low temperature test chamber) shall comply with the provisions of Chapter 4 of GB2423.1-81. 6 Marking
6.1 General requirements
The detector shall have clear and durable markings on the box body, including nameplate and quality inspection mark. 6.2 Nameplate
The nameplate shall include the following contents:
a. Product name;
b. Product model;
Manufacturer name and trademark;
Production year, month and product number.
6.3 Quality inspection mark
Code and number of this standard;
Name of the inspection department;
Qualification mark.
Additional instructions:
316280-1996
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Sixth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shenyang Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Tong Shuxi and Liu Zhongshun. 437A 1m long section of the sensor is bent 3m away and quickly placed in a beaker with a volume of 1000ml and 800ml boiling water (the wattage of the electric furnace should be able to ensure that the water continues to boil during the test). At the same time, start timing until the detector is activated and sends out a fire alarm signal, and record the response time; for samples with a rated operating temperature of more than 100C, a common gas lighter (non-windproof type, filled with butane gas) should be ignited on a 1m long section of the sensor 0.3m away from the terminal box, and the flame height should be adjusted within the range of 25±5mm. The center of the flame is used to burn the middle point, and start timing at the same time until the detector is activated and sends out an alarm signal, and record the response time. The test results should comply with the provisions of 4.5.1.3. The test equipment is: a 1000ml beaker, an electric furnace, a standard stopwatch, and a gas lighter. 5.3.2 Action performance test of differential temperature detector 5.3.2.1 Non-action test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. Place a sensor with a length of 90 ± 10m in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 1°C/min, 2°C/min, and 3°C/min, respectively, and start timing at the same time. After 15 minutes, stop the test and record the test results. The test results should comply with the provisions of 4.5.2.2. 5.3.2.2 Action test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. Place a sensor not more than 20m long in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 10°C/min, 20C/min, and 30C/min, respectively, and start timing at the same time. Stop the test after 1 minute, Record the test results. The test results shall comply with the provisions of 4.5.2.3. 5.3.2.3 The standard temperature chamber used for the test equipment shall comply with the provisions of 4.2.4 of GB4716-93. 5.4 Insulation resistance test
5.4.1 Install the detector on a metal plate (voltage ground terminal) of the insulation resistance test equipment, short-circuit all electrical contacts of the detector (except the grounding point) in positive order, and apply a DC voltage of 500±50V between the short-circuit point and the metal plate for 60±5s, then measure the insulation resistance.
The measurement results shall comply with the provisions of Article 4.6.
5.4.2 The test equipment shall comply with the requirements of Article 4.11.4 of GB4716-93. 5.5 Withstand voltage test
5.5.1 Place the detector at a temperature of 25±2 C, place it in a damp heat test box with a relative humidity of no more than 70% for 24 hours, then take it out and install it on the metal test board (voltage ground terminal) of the endurance test equipment. Short-circuit all the contacts of the detector (except the grounding point) and apply the test voltage between the short-circuit point and the metal test board according to the following provisions: a,
When the rated working voltage does not exceed 50V:
The test voltage is increased from 0V to 500V at a rate of 100~500V/s and maintained for 60±5s; h, When the rated working voltage exceeds 50V:
The test voltage is increased from 0V to 1500V at a rate of 100~500V/s and maintained for 60±5s. The test period shall comply with the provisions of Article 4.7.
5.5.2 The test equipment shall comply with the provisions of GB4716-93 4 .12.4. 5.6 Vibration test
5.6.1 Fix the detector on the vibration table at a convenient position and connect it to the control and indicating equipment to put it in normal monitoring state. 135
GB16280—1996
Perform a frequency sweep cycle in the frequency range of 10～150～10Hz with an acceleration amplitude of 9.81m/s2 and a sweep rate of 1 octave/min to check whether there is a dangerous frequency. If there is a dangerous frequency, a fixed-frequency vibration test with an acceleration amplitude of 9.81m/s and a duration of 90±1min is carried out at this dangerous frequency; if there is no dangerous frequency, a fixed-frequency vibration test with a frequency of 150Hz, an acceleration amplitude of 9.81m/s2 and a duration of 90±1min is carried out. The test results should meet the requirements of Article 4.8.
5.6.2 The test equipment shall comply with the provisions of Article 3.1 of GB2423.10-81. 5.7 Steady-state humidity test
5.7.1 After drying the detector in a drying oven at a temperature of 40±5°C for 24 hours, immediately move it to a humidity test chamber, and connect the detector to the control and indication equipment to put it in a normal monitoring state. Adjust the humidity test chamber so that the detector is at a temperature of 40±2°C and a relative humidity of 90%~～95% for 24 hours, then take it out and move it to an environment with a temperature of 15～25 (. Relative humidity is not more than 70% to recover for 1 hour. The test results shall comply with the provisions of Article 4.9.
5.7.2 The test equipment (humidity test chamber) shall comply with the provisions of Chapter 2 of GB2423.3-81. 5.8 Low temperature test
5.8.1 Connect the detector to the control and indication equipment The equipment is turned on and put into normal monitoring state. Keep it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1 hour. For indoor detectors, place them in a low temperature test box with a temperature of -10±2°C to stabilize for 2 hours; for outdoor and general-purpose detectors, place them in a low temperature test box with a temperature of -302°C to stabilize for 1 hour. After the low temperature stabilization period, turn off the control and indication equipment, take out the detector, and restore it in an environment with a temperature of 15-25°C and a relative humidity of no more than 70% for 1-2 hours. h.
The test results shall comply with the corresponding provisions of Article 4.9. 5.8.2 The test equipment (low temperature test chamber) shall comply with the provisions of Chapter 4 of GB2423.1-81. 6 Marking
6.1 General requirements
The detector shall have clear and durable markings on the box body, including nameplate and quality inspection mark. 6.2 Nameplate
The nameplate shall include the following contents:
a. Product name;
b. Product model;
Manufacturer name and trademark;
Production year, month and product number.
6.3 Quality inspection mark
Code and number of this standard;
Name of the inspection department;
Qualification mark.
Additional instructions:
316280-1996
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Sixth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shenyang Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Tong Shuxi and Liu Zhongshun. 437A 1m long section of the sensor is bent 3m away and quickly placed in a beaker with a volume of 1000ml and 800ml boiling water (the wattage of the electric furnace should be able to ensure that the water continues to boil during the test). At the same time, start timing until the detector is activated and sends out a fire alarm signal, and record the response time; for samples with a rated operating temperature of more than 100C, a common gas lighter (non-windproof type, filled with butane gas) should be ignited on a 1m long section of the sensor 0.3m away from the terminal box, and the flame height should be adjusted within the range of 25±5mm. The center of the flame is used to burn the middle point, and start timing at the same time until the detector is activated and sends out an alarm signal, and record the response time. The test results should comply with the provisions of 4.5.1.3. The test equipment is: a 1000ml beaker, an electric furnace, a standard stopwatch, and a gas lighter. 5.3.2 Action performance test of differential temperature detector 5.3.2.1 Non-action test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. Place a sensor with a length of 90 ± 10m in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 1°C/min, 2°C/min, and 3°C/min, respectively, and start timing at the same time. After 15 minutes, stop the test and record the test results. The test results should comply with the provisions of 4.5.2.2. 5.3.2.2 Action test
Connect the detector to the control and indicating equipment to put it in a normal monitoring state. Place a sensor not more than 20m long in the incubator. Under the conditions of an initial airflow temperature of 25 (: and a flow rate of 0.8 ± 0.1m/s, heat up at a rate of 10°C/min, 20C/min, and 30C/min, respectively, and start timing at the same time. Stop the test after 1 minute, Record the test results. The test results shall comply with the provisions of 4.5.2.3. 5.3.2.3 The standard temperature chamber used for the test equipment shall comply with the provisions of 4.2.4 of GB4716-93. 5.4 Insulation resistance test
5.4.1 Install the detector on a metal plate (voltage ground terminal) of the insulation resistance test equipment, short-circuit all electrical contacts of the detector (except the grounding point) in positive order, and apply a DC voltage of 500±50V between the short-circuit point and the metal plate for 60±5s, then measure the insulation resistance.
The measurement results shall comply with the provisions of Article 4.6.
5.4.2 The test equipment shall comply with the requirements of Article 4.11.4 of GB4716-93. 5.5 Withstand voltage test
5.5.1 Place the detector at a temperature of 25±2 C, place it in a damp heat test box with a relative humidity of no more than 70% for 24 hours, then take it out and install it on the metal test board (voltage ground terminal) of the endurance test equipment. Short-circuit all the contacts of the detector (except the grounding point) and apply the test voltage between the short-circuit point and the metal test board according to the following provisions: a,
When the rated working voltage does not exceed 50V:
The test voltage is increased from 0V to 500V at a rate of 100~500V/s and maintained for 60±5s; h, When the rated working voltage exceeds 50V:
The test voltage is increased from 0V to 1500V at a rate of 100~500V/s and maintained for 60±5s. The test period shall comply with the provisions of Article 4.7.
5.5.2 The test equipment shall comply with the provisions of GB4716-93 4 .12.4. 5.6 Vibration test
5.6.1 Fix the detector on the vibration table at a convenient position and connect it to the control and indicating equipment to put it in normal monitoring state. 135
GB16280—1996
Perform a frequency sweep cycle in the frequency range of 10～150～10Hz with an acceleration amplitude of 9.81m/s2 and a sweep rate of 1 octave/min to check whether there is a dangerous frequency. If there is a dangerous frequency, a fixed-frequency vibration test with an acceleration amplitude of 9.81m/s and a duration of 90±1min is carried out at this dangerous frequency; if there is no dangerous frequency, a fixed-frequency vibration test with a frequency of 150Hz, an acceleration amplitude of 9.81m/s2 and a duration of 90±1min is carried out. The test results should meet the requirements of Article 4.8.
5.6.2 The test equipment shall comply with the provisions of Article 3.1 of GB2423.10-81. 5.7 Steady-state humidity test
5.7.1 After drying the detector in a drying oven at a temperature of 40±5°C for 24 hours, immediately move it to a humidity test chamber, and connect the detect
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