GB/T 12921-1991 Technical requirements for marine oil-water interface detectors
Some standard content:
x.625-12.057
National Standard of the People's Republic of China
GB/T 12921—91
Technical requirements for marine oil-water interface detectors
Marinc oil-water interface detector specifications1991-05-22 issued
National Technical Bureau
1992-02-01 implemented
National Standard of the People's Republic of China
Technical requirements for marine oil-water interface detectors
Maride oil-water interface detector specifications 1 Subject content and applicable scope
GR/T12921-.91
This standard specifies the technical requirements, test methods, general test rules and international standards for water interface detectors (hereinafter referred to as detectors), packaging, transportation and storage.
This standard shall apply to the design, manufacture and testing of detectors. 2 Reference standards
LiH2423.1 Basic environmental test procedures for electric and electronic products Test A: Low temperature test method 502423.2 Basic environmental test procedures for electric and electronic products Test B. High temperature test method
GB2423.4 Basic environmental test procedures for electric and electronic products Test D5: Alternating heating test method
G15 2428.7
Electrical and electronic products basic environmental test procedures 1 Test comparison: link test method
Electrical and electronic products basic environmental test thermal process test Ec new drop and overturn test method
tiH2423.8Electrical and electronic products basic environmental test procedures Test Ed by link test method
G2123.1C Basic environmental test of products Current wall test Fc: Thermal dynamic sinusoidal) test method G2423.16
G8 2423..17
Basic environmental test regulations for electrical and electronic products: GB1208 Classification of external light protection levels
3 Technical requirements
3.1 The detector should be able to work normally under the following environmental conditions: 3.1.1 Ambient air temperature
Test Kn: Salt spray test method
Generally, the detector is used with a diffusion band of 100 °C~55 °C, and the maximum ambient air temperature is 70 °C when the measurement is carried out through the blanket. It should be able to withstand the maximum ambient air temperature of 70 °C. It is not replaced again,
The old portable deep exposure is not used on the core: -25~+55 °C. 3.1.2
When the temperature is less than or equal to 40 °C, it is 10%:
When the temperature is greater than 40 °C, it is 7%
3. 1. 3 The inclined direction of the probe is 32.5° from the bottom: 22.5 cycles 105 linear vertical degrees ±1.0 3. 1. 4 When the dynamic frequency is 2.0--182Hz, the displacement amplitude is ±1.0mm; 8. Approved by the State Regulations on Technical Supervision on May 22, 1991: 1992.0201 CB/T 12941: 91 b, when the frequency is greater than 13.2--80.0z, the added value is 1.0.7g3.1.5 electrical insulation resistance, etc., and the influence of transient disturbance of power supply. 3.2 Structural design requirements
3.2.1 The detector can be designed as a point type or a movable type. 32.2 The detector installed in a hazardous location shall be capable of meeting the requirements of the safety protection method. 3.2.3 The detector shall be capable of detecting the maximum measurable liquid level above the interface of the dirty oil and water tank. 3.2.4 The detector shall continuously indicate the interface position. 3.2.5 The automatic control of the detector shall adopt the simulated technology and the gas technology. The structure shall be designed to meet the requirements of the safety protection method. 3.2.6 The fixed detector installed in the main tank shall be able to detect the output of the selected tank. 3.2.7 The display control device of the fixed depth measurement shall be designed to be able to be installed alone in the cargo room or other similar places. It shall be at least 22 grade.
32. Daily sounding equipment and its accessories are made of oil-water resistant materials: electrical components are made of steel or steel alloy. 3.2.9 The detector housing is equipped with a protective grounding terminal, or a permanent grounding terminal is provided near the grounding strap. 3.2.20
A permanent non-return external connection should be provided in the appropriate part of the measurement. 3.2.31 The detector should withstand the impact under normal transportation conditions after packaging. 3.2.12 The detector should be able to withstand the temperature of 40-13 (
b.55--3) under normal transportation and storage conditions. (: high temperature
5.3 Performance requirements
3.31 The detector can be made into a mother electrical ratio (.~.0.258/cm of the oil-water cumulative surface, 3.3.2 The measurement accuracy of the detector should be within 2:m of the actual position of the water interface. 3.3.3 The detector should be able to quickly sense the change of the oil interface, and the reaction time should not exceed 3%. 3.3.4 The detector should be able to correctly infer the working state of the detector on board. 34 Electrical performance requirements
3.4.1 The detector should be able to operate under the following voltage and change conditions: For AC-powered detectors, when the power supply voltage changes within the rated value specified in the table, a
deep-sea detector powered by electrical energy; when the power supply voltage deviates from the rated value, this + does not change. b.
change range || tt||Recovery time.
3.4.2 When the circulating temperature is 25±10°C: relative humidity is 252~5%, the power supply of the detection pin is weaker than the insulation resistance between the detection pin and the ground is not less than the temperature of the table? The thermal stop.
Test voltage (direct currency)
Insulation use
GB/T1292191
5.4.5 When the ambient temperature is 13°C relative humidity The temperature is 2% to 7%, and the detector power input terminal and the shell should be able to withstand 1min AC high-pressure test without any aging and wear. The test output pressure should meet the requirements of the table 3: Table 3
Visual seat music
5~-300
30)~61
2 Test method
4.1 Appearance inspection
Electrical inspection
Inspection and selection of solutions 4.2 Performance test
4.2. Test case
4.2.1.1 Under normal atmospheric conditions, temperature 25_10 (25-75% humidity, air: 86~~106kPa>, perform performance tests.
Before performing the stability test, first test the insulation resistance of the power supply terminal to the battery. The minimum insulation resistance is not lower than the minimum resistance of the power supply terminal.
4.2.1.2 When testing the depth meter, a new load must be installed: the distance between the oil-water boundary and the customer equipment should be large enough, and the total water depth inside and outside the container should be at least enough to completely immerse the probe of the depth meter, so that the probe can move in the oil or water. 4.2.1.3 Performance test of the depth meter:
*. Used in the steam box: only 7
Light weight standard note 0 light weight code:
Crude oil: medium density and viscosity:
Material: 60# fuel.
.2.1.4 Detection performance test requirements
Water density is 1g/rrm;
Dry water density is 1.c.2g.cm
Bottom water: room temperature is 1.025g/cm
4.2.2 Test method
4.2.2.1 Test oil and test water are respectively made into 12 test samples according to the provisions of 4. The water limit is about 1:8. Each test needs to be carried out for a sufficient time to wait for the oil-water interface to pass the dead zone. The accuracy of the probe is determined by comparing its data with the position of the specified oil-water interface. During the test, the probe moves up and down in the filter at a speed of 2Umm/s. Each test should be completed at a certain speed. Each test result should be filled in with the following information: and the light oil rate should be increased according to the requirements of 3.% and 3.83. Light oil fuel oil (degree 1. DF. g/cm> GB/T1221-91 (degree 1. 312c: cm2) start time completion time (degree 1.02E/m) logging time 4.2.2.2 During the performance test, if the oil contamination has an impact on the accuracy and response time of the detector, the test data should be recorded 4.2.2.3. The ambient air source temperature shall be used for the test of the instrument in the ambient environment and the filter of the water filter in detail. The test shall be carried out at the normal ambient temperature and 50°C. The influence of temperature on the accuracy and time of the test shall be determined and recorded: 4.2.3 Power supply change test
, the AC power supply shall be selected according to the voltage and power ratio of each combination specified in Table 5, and run for 15min under each combination, recording the changes in the detection accuracy and response time. Its performance shall meet the requirements of 3.7.2 and 3.3.3. Table
Power change ratio (Linglian) || In addition to the above tests, the detector shall also be subjected to the power supply, voltage and frequency transient fluctuation test specified in Table 6. During the test, the detector shall be able to stop working. The detector powered by a battery shall be operated for 15m at a power supply voltage of 30% and a voltage of 25V. The accuracy and response time of the detector shall meet the requirements of 2.3.2 and 3.3.3. 4.2. 4 Insulation test
The detector shall be subjected to full electric strength test during performance test and power change test. The rated power resistance shall be measured. 4.2.4.1 Electric strength test
The live parts of the detector and the casing shall be subjected to the dielectric weakness test of AC real pressure of 1m without breakdown or failure. The external electric strength test shall be of the capacity band or the test frequency shall be 25~1001. The test circuit shall be in accordance with the provisions of Table 3. 4.2.4.2 The rated insulation test cell
The rated power supply shall be less than 1M2.
4.2.5 High temperature test
According to GB2423.2 test Bb, the high temperature test method of non-digital thermal test sample with temperature change shall be selected from GD/T:292191
a. Strictness: 55. Maintain time at 16t70℃ for 2h; b. Pretreatment: Place the depth meter in a test box at 16t70℃, connect all the heads in the test sample, and pass the test. Its performance shall meet the requirements of 3.3.;
Intermediate test: Perform performance test at the end of the test cycle at 55℃ for 1h. Its performance shall meet the requirements of 3.8.; After 21,70℃ high temperature test, when it returns to normal working temperature, its performance shall meet the requirements of 3.7. e.
The test temperature shall meet the requirements of 3.1 and 1. 4.2.6 Humidity resistance test
According to 223, 4 test conditions Db: Alternating heat test is carried out. 8
Severity level: Starting temperature, the relative humidity change in the test period of 2d should be greater than 95%; Pretreatment according to 4. 2.5 b. Item 2. Intermediate test: In the first cycle and the end of the second cycle, the detector should be powered on and its performance should meet the requirements of 3.3.2; e. After the test, take the detector under the test conditions, connect the detector to the instrument and the components, and make sure that the measured insulation value meets the requirements of the instrument. Finally, perform the performance test according to the method specified in 4.2.2 for a period of several hours. The final resistance measurement and performance test should be stopped. h, the blocking resistance must be measured before the test, after the withstand test, the controller and electrical components should not have visible potential change, table:
frequency output voltage
4.2.7 Low-voltage test
Test according to GB2423.1: Low-voltage test method is achieved.
Pretreatment: install the tester in the test box with diagnostic probe and temperature change: →43=3C;
Continuous time Time: 16hm
Recovery condition: under the acid weather condition of mountain belt/recovery for 241d.
Battery self-resistance
Finally, remove the detector packaging and verify that the electrician can meet the requirements of 3.3.2: 4.2.8 Vibration test
Fix the detector on the digital vibration table according to the test method of 243.10, and power on the parts. 3. Safety: 4.4. Note the source and amplitude range of the state [-3, check if there is light resonance, if there is a resonance phenomenon, do a 2-hour long test at the resonance point, if the light is obviously resonance, then do a 2h long test at the acceleration value of 301z. The detector should be tested in parallel with the above tests in a relatively vertical axis and can operate normally. Its performance can meet the requirements of 3.2 and 4.2. The magnification Q value should not be less than 5 times. After the test, the detector should not be abnormal or damaged. 4.2.9 Tilt test
4.2.9-1 Tilt test
Place the detector on the test stand according to the normal installation, and tilt it in the four directions of front, back, left and right by 32.5 degrees respectively. The test time is 15 minutes per test.
4.2.9.2 Tilt test
After the tilt test, the detector is tested for 22.5 cycles in the front, back, left and right two water axis areas, and each direction is tested for 15 minutes.
G0/1 12921-91
During the two tests, the detector is rotated normally and its performance meets the requirements of Article 3.3.2. 4.2.10 External protection test
According to the user level specified in the product technical system, according to the provisions of GD120B, select the corresponding test method to carry out the test. 4.2.11 Salt test
The parts to be tested shall be tested in accordance with GB2423.17 Test K, and the test method. The test shall last for 48h. At the end of the test, the salt sediment on the surface of the test product shall be gently removed, and then washed in distilled water, and the surface of the test sample shall be checked for excessive density and quality changes.
4.2.12 Long-term test
The final part of the test shall be tested in accordance with GB2423.6 Test J: Long-term test method. The test time shall be 28d continuously, and the test station shall use the test instrument to allow the naked eye to have visible energy, but the recommended area is less than 2 times the area of the test sample surface. 4.2.13 Immunity test
The detection shadow shall be placed in the wind energy range of the screen efficiency and its operation shall be fast. Note that during the washing test, the depth detector should be able to work normally and meet the requirements of Article 3.3.2. If the tested instrument is not equipped with the equipment specified in Article 3.2.5, the tests specified in Articles 1.2.13.1 and 4.2.13.2 can be exempted. 4.2.13.1 is a ground line + interference test. The probe is isolated from the ground and its inductor is connected to the ground through an isolation transformer. Note: The open-circuit voltage of the probe should be 1V (effective) at a frequency of 10--50kHz. The output signal should not exceed the positive impedance. The isolation transformer should not withstand the full current. The AC voltmeter should indicate a voltage drop and the test should be carried out as shown in Figure 2. The signal generator must be properly connected and opened to the test circuit. The capacitor must be able to supply a test signal with a modulation of 3V and a frequency width of less than ten meters that can be scanned within the range of 10H-0MHZ. For the F source, the test signal voltage rises continuously from 0.1V at the upper frequency limit of 30MHz to 1.C V at the lower frequency limit of 1H.
4.2.13.3 Power supply matching network
G9/T12921-91
Figure 2 Conductive dry test layout and density test network
Test product
When testing, put the detector in a room with an acid screen and an excitation efficiency of 80-100. And turn on the power. The interference pulse is withdrawn through the isolation transformer as shown in Figure 1, and the symmetrical and asymmetrical pulses are also introduced into the protection device (Figure 3. Figure 4, the green peak is the temporary point of 4D0V products, the time is 20 seconds, and the test duration is 1. The selector should work properly, and its energy should meet the requirements of 3.3.2. Electrical
solution generator
isolation transformer limit
transformer test sample
Figure. Symmetrical type injection transient main disturbance test layout micro medical exciter
4.2.14 transportation test
bright state generation treatment
two high voltage transformer Www.bzxZ.net
GA/T 12921—91
Test companion product
Show swimming finger
Test 4 Non-type human peak ten finger test Pass storage position includes vertical collision control test and tracking fall test. 4.2, 14.1 Avoidance test according to GB2423.6 Test Bb Avoidance Test Method Wrap the speed detector in reverse and tighten it with rope on the test bench B
Severity level: ±0.50℃, pulse duration 1m, pulse repetition frequency 11.00℃.
Proof of pull effect: 10 times
After the test is completed, the speed detector is not allowed to be damaged, tampered, etc., and should be able to work normally.
4.2.14.2 Drop test includes tilt test and self-recovery test. After the test, the speed detector is not allowed to be damaged, tampered, etc., and should be able to work normally.
Carry out:
Frequency test! Several angle test and angle drop test are required. Test according to the pre-test
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