Program of Pattern Evaluation of Methane Detectors of Interferometer Type
Some standard content:
National Metrology Technical Specification of the People's Republic of China J.IF 1163—2006
Program of Pattern Evaluation of MethaneDetectors of Interferometer T'ype2006-12-08 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Implemented by the State Administration of Quality Supervision, Inspection and Quarantine
JJF1163—2006
Program of Pattern Evaluation of MethaneDetectors of Interferoneter TypeJ.JF1163—2006
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on December 8, 2006, and came into effect on January 1, 2007.
Responsible unit: National Environmental Chemical Metrology Technical Committee Drafting unit; National Mine Safety Metrology Station National Coal Mine Dust Ventilation Safety Product Quality Supervision and Inspection Center Coal Industry Chongqing Electric Explosion-proof Inspection Station
This specification shall be interpreted by the responsible unit
Main drafters of this specification:
Chen Fumin
Xu Ermin
Participating drafters:
Kong Linggang
Deng Yonglin
Cao Libo
Fu Jiantao
JJF 1163—2006
(National Mine Safety Measurement Station)
(National Coal Mine Dust Ventilation Safety Product Quality Supervision and Inspection Center) (National Mine Safety Measurement Station)
(National Coal Mine Dust Ventilation Safety Product Quality Supervision and Inspection Center) (Coal Industry Chongqing Electrical Explosion-proof Inspection Station) (National Mine Safety Measurement Station)
(National Mine Safety Measurement Station)
References
Terms, symbols, codes
Overview·
..IF 1163- 2006
Technical documents and test samples provided for review·5 1
Technical documents for review ·
Test prototype
Legal management requirements-
7 Design requirements
Indication error
Measurement flexibility
Measurement range-
Technical requirements
Appearance and power-on inspection ·
Stability
Air tightness
Diffusion
Drop test ·
TWorking temperature….
Storage temperature
Impact test,|| tt||Vibration test
Alternating damp heat test
Insulation resistance
Dielectric strength
Explosion-proof safety
Type evaluation objectives-
Conditions and methods of type evaluation
Conditions for type evaluation
(3)
(4)
10.2 Methods of type evaluation
11 Processing of type evaluation results
11.1 Judgment principles
11.2 Evaluation report
.IJF 11632006
Appendix A Format of type evaluation report of optical interferometer methane detector -.
1 Scope
JJF1163—2006
Outline of type evaluation of optical interferometer methane detector This specification applies to the type evaluation of optical interferometer methane detector (hereinafter referred to as the detector): 2 References
Environmental testing for electric and electronic products Part 2: Test methods Test A: Low temperature GB/T 2423.1—2001
Environmental testing for electric and electronic products Part 2: Test methods Test B: High temperature B/T 2423.22001
GBT 2423.41993
GH/)2423.51995
GB/T2423.8—1995
Basic environmental testing procedures for electric and electronic products Test Db: Cyclic damp heat test method
Environmental testing for electric and electronic products Part 2: Test methods Test Fa and guidelines: Chongyue
Environmental testing for electric and electronic products Part 2: Test methods Test Ed: White drop
G1B/T2423.10—1995 Environmental testing for electric and electronic products Part 2: Test methods Test Ed: White drop Part: Test method Test Fc and guide: Vibration (sinusoidal)
GB3836.1-2000 Electrical apparatus for explosive gas atmospheres Part 1: General requirements GB3836.4-2000 Electrical apparatus for explosive gas atmospheres Part 4: Intrinsically safe type i\CB4208-1993 Enclosure protection degree (IP code) JJG677-2006 Verification procedure for optical methane detector MT28-2005 Optical methane detector When using this specification, pay attention to the use of the current valid version of the above-mentioned referenced documents. 3 Terms, symbols, codes
Pressure method: A method in which pressure is applied to the gas sample chamber to make the pressure difference between the gas sample chamber and the air chamber, thereby generating a refractive index difference instead of the refractive index difference generated by the different types of gases in the two chambers. 4 Overview
The detector is mainly used to determine the methane concentration in the working environment. It is a portable instrument that quantitatively analyzes the gas composition by measuring the change in the refractive index of the gas. The measurement range is (0-10)%CH and (0-100)%CH. The card is composed of electrical components, optical components and gas chambers. 5 Provide technical documents and test samples for review S.1 Provide technical documents for review
5.1.1 Sample photos;
5.1.2 Product enterprise standards (including inspection methods); JJF 1163--2006
General assembly drawing, main parts and circuit diagrams; 5.1.3
Reliability design, intrinsic safety calculation book:
Instructions for use;
Test report made by the research and development unit.
5.2 Test Prototypes
4 sets of prototypes and auxiliary accessories (such as the battery pack of the measuring instrument, plastic plate for ABS shell, etc.) produced by the applicant should be provided: When the performance test and explosion-proof test are conducted by two technical institutions respectively, the prototypes should be sent to the technical institution for performance test, and then the technical institution for performance test shall be entrusted with explosion-proof test to ensure the consistency of the two test prototypes.
6 Legal Management Requirements
6. "No measuring instrument shall use illegal measurement units. The metrological performance of the measuring instrument must comply with the provisions of the national verification regulations. 6.2
6.3 Marking and numbering generally include the following: 6.3.1 Type approval mark and number of the measuring instrument (this item is not mandatory, and the corresponding position can be reserved for new products); 6.3.2 Manufacturing license mark and number of the measuring instrument (new products can be reserved for Corresponding position: only for domestic instruments): 6.3.3 General identification should include the following: 6.3.3.1
Name, number, specifications and manufacturer of the measuring instrument: 6.3.3.2
Measurement range of the measuring instrument:
6.3.3.3 Special indication period and mark for occasions where use needs to be restricted (applicable to special-purpose measuring instruments, such as explosion-proof EX mark)
Measurement requirements
Indication error
The measurement range is (0~10)%H, when it meets the requirements of Table 1, and when it meets the requirements of Table 2 for the measurement range of (0~100)%CI.
Table 1 The measurement range is volume fraction (0--10)%CI4 The indication error of the measuring instrument Measurement range/% (H
Segment%
Indication information H
1< :424
The measurement range is volume fraction (01(0)%CH, the indication error of the measuring instrument is measured in the range of/%CH
Segment: %(H
Indication error/(H
0--100
40≤70
7.2 Measurement repeatability
JJF11632006
The measurement repeatability of the measuring instrument is expressed by the standard deviation of 6 consecutive measurements , the total value should not exceed one third of the corresponding indication error.
7.3 Measuring range
The measuring range of the measuring instrument should be (0-10)%CH. or (0~100)%CHI. 8 Technical requirements
8.1 Appearance and power-on inspection
ONUHSI
8.1.1 The readout part should be equipped with a clear part of the scope. When the graticule image is not obviously moving. 8.1.2 The readout part should be clear and easy to distinguish. There should be enough viewing field to observe the bending and tilting of the visible part. The visible stripes should not jump suddenly. There should be no visible field. 8.1.3 The scale should show the minimum scale distance. 8.1.4 The lowest digit of the digital display should be stable. There should be no mechanical damage on the appearance. The optics should be effective. The visible stripes should be clear and not be out of shape. There should be no debonding of the core. The coated optical parts should be light and smooth after gluing. 8.1.6 The measuring switch should have clear steps and accurate positioning. The name, model, pointer should be free from glare when adjusting the interference fringes. The rotating parts should be free from mildew, bubbles, dust, etc. The operation should be flexible and the manufacturer's name, measurement specification, and the unit and instrument should have the manufacturing meter license mark and symbol. 8.2 Stability Stability Measurement range Indication error [% 8.3 Air tightness For striped blankets, the measuring instrument should meet the requirements of the manufacturer's name, measurement specification, and unit and instrument description (new products can leave corresponding positions).
Allowable change value of interference fringe movement
Test the air tightness of the measuring instrument
The pressure E should not exceed 10Pale within min
MEYINA METROTUG
8.4 Diffusion
After the diffusion test of the measuring instrument, the methane oxidization should not exceed 0.1%CH.
8.5 Drop test
For the movement of interference fringes caused by the drop test, the movement of the interference fringes of the (010)%CH4 measuring instrument shall not exceed 0.2%CI14, and the movement of the interference fringes of the (0--100)%CI14 measuring instrument shall not exceed 2%CI14. 8.6 Operating temperature
TThe upper limit of operating temperature: 40, the lower limit of operating temperature: over shall meet the requirements of Table 3:
10%. During the test, the movement of the interference fringes of the measuring instrument shall not exceed 10%. 8.7 Storage temperature
JJF 1163- 2006
The upper limit of storage temperature is 55℃, the lower limit of storage temperature is -20℃, the duration is 16h, after the test, it is restored in normal environment for 2h, and the indication error of the measuring instrument shall meet the requirements of Article 7.1. 8.8 Impact test
Severity: Peak acceleration 200m/s2 (20g); Pulse duration (611)ms; After the test, the appearance and indication error of the measuring instrument shall meet the requirements of 8.1 and 7.1. 8.9 Vibration test
Severity: Frequency range (10-150)Hz, acceleration 20mjs (2g): Sweep frequency cycle number 10 times on each axis; After the test, the appearance and indication error of the measuring instrument shall meet the requirements of 8.1 and 7.1. 8.10 Alternating damp heat test
Severity: Temperature 40, duration 6d; After the test, all are restored in a positive belt environment for 2h, the appearance and minimum value error of the measuring instrument shall meet the requirements of 8.1 and 7.1 of the outline: 8.11 Insulation resistance
After the alternating damp heat test, the insulation resistance of the measuring instrument shall not be less than 1.5MQ. 8.12 Dielectric Strength
After the alternating damp heat test, the measuring instrument shall withstand 500V, 50Hz AC voltage J card, and there shall be no breakdown or flashover within 1 minute.
8.13 Explosion-proof Safety
8.13.1 Explosion-proof Type of the Measuring Instrument
The explosion-proof type of the measuring instrument is the intrinsically safe type for mining use: its explosion-proof performance complies with the provisions of GB3836.1-2000, GB3836.4-2000 and MT28-2005. It shall be qualified by the national authorized explosion-proof inspection agency. 8.13.2 Bulb
When the light source part of the measuring instrument is powered on, it shall not detonate the methane-air mixture after the lamp bubble skin breaking test. 8.13.3 Battery
The power supply part of the measuring instrument shall not detonate the methane-air mixture after the battery short-circuit test. 8.13.4 The electrical clearance, creepage distance and the distance between the terminal and the shell of the measuring instrument, and the distance between the printed circuit board under the insulating paint layer shall meet the requirements of GB383G.4-2000. 8.13.5 When the shell of the measuring instrument is made of non-metallic materials, the surface insulation resistance shall not be greater than 1 (GQ): The protection performance meets the requirements of TP54 in GR4208-1993: When the shell of the measuring instrument is made of light alloy materials, the shell shall be protected by a pure cowhide sheath.
8.13.6 The maximum surface temperature of the measuring instrument is 1508.13.7 The components of the circuit related to the intrinsic safety performance of the measuring instrument shall not exceed two-thirds of the maximum current, voltage and power specified in the component installation conditions and temperature range under positive load and specified fault conditions. 8.13.8 The measuring instrument shall not have any deformation or damage that affects the explosion-proof performance after the explosion-proof drop test in accordance with the regulations of CB3836.1-2000:
8.13.9 The measuring instrument shall pass the GB 3836.4-2000 spark ignition test. 9 Type evaluation items
Type evaluation items of the measuring instrument are shown in Table 4 below
Indication error
Measurement repeatability
External gauge and power-on inspection
Measurement range
Stability
Air tightness
Diffusion
Drop test
Working temperature test
Storage temperature test
Impact test
Vibration test || tt||Alternating damp heat test
Insulation voltage
Dielectric strength
Explosion-proof structural parameter inspection
Bulb test
Maximum surface temperature testWww.bzxZ.net
Shell protection performance test
Plastic outer insulation resistance test
Explosion-proof drop test
Spark ignition test
Conditions and methods for type evaluation
Conditions for type evaluation
10.1.1 Environmental conditions
J.IF 1163—2006
Type evaluation items of measuring instruments
Importance classification
Metrological requirements
, technical requirements
Explosion-proof safety
Environmental temperature (15~35)℃, fluctuation is not more than +2℃: environmental relative humidity <85%, ambient air 4 should be free of interfering gases that affect detection.
101.1.2 Testing equipment
JJE 10.1.2.1
The measuring equipment for measuring the performance of the measuring instrument shall be selected in accordance with the requirements of 6.1.2 of JJG677-2006.
Insulation meter: output voltage E500V, accuracy level is 10. 10.1.2.23
10.1.2.3 Resistance to [k test instrument: AC /K (01500) V, frequency is 5011z, accuracy level is better than 5. 10.1.2.4 Environmental condition test equipment shall comply with the requirements of GB/T2423.1--GB/T2423.10, 10.1.2.5 Explosion-proof performance The equipment to be inspected shall comply with the requirements of GB3836.1-2000 and B3836.4-2000. 10.2 Method of type evaluation
SODNHSITHA
Appearance and power-on inspection: for
2 Indication error: according to the change of JIG6 regulation 6.3.5 10.2.2
According to the regulation 67-2006 regulation 6.3.6 10.2.3
Measurement repeatability: main
limit force value, the measuring instrument shall be able to
Measurement range: standard instrument
heart willow display =
10.2.5 Stability:
After 24h After standing, observe the movement of the secretion stripes (2 ± 2)7 Conditions: Air tightness: According to G 677-2006, the instrument should not be exposed to 1% CH without a sheath. The instrument should be irradiated and radiated by a radiation source. It is implemented. 1 G677-2006 6.3.4 Specification: G677-2000 Working temperature test 10.2.9.1 Working instrument zero adjustment (±3): constant temperature box 10.2.9.2. The lower limit test: According to the provisions of 6.3.2 of the procedure (20°C). 2423:1-2001 Test Bl. Place the instrument without a sheath for 14 hours and read the reading. Then place it in (-10°C) for 2 hours and then measure the movement of the lower level of the instrument. The lower limit test: According to the instrument zero adjustment to 2°C in a constant temperature box (20°C). After 10.2.10 Storage temperature identification -2001 Test Bl Method: After 24 hours of standing, read the migration caused by the insert. Put the instrument without the expansion sleeve into (40 + 10.2.10.1 Storage temperature cutoff: Perform according to the test sudden cleaning method of 1241-2001. Put the instrument without the protective sleeve and the air plug into a constant temperature box at (13)℃, and under the conditions of MAMETHOLOGY, perform the determination according to 10.2.2 of this outline. 10.2.10.2 Storage temperature upper limit test: * Then gradually return to the test temperature and perform the Tiar test Bh method. Put the instrument without the protective sleeve and the air plug into a constant temperature box at (5512)℃, and after 16 hours, gradually return to the test conditions. The indication error is measured according to 10.2.2 of this outline. 10.2.11 Vibration test
is carried out according to CB/T2423.10-1995 test Fc method. The test piece is the packaging of the instrument and is clamped to the installation surface of the test bench with a rigid clamp. After the test, check the appearance and indication error of the instrument according to 10.2.1 and 10.2.2 of this outline. 10.2.12 Impact test
is carried out according to GB/I2423,5-1995 test L method. The test piece is the packaging of the instrument and is clamped to the installation surface of the test bench with a rigid clamp. The pulse waveform is a half-sine wave, and the number of impacts is three times on each side, for a total of nine times. Test JJF 1163—2006
Afterwards, check its appearance and indication error according to 10.2.1 and 10.2.2 of this outline: 10.2.13 Alternating heat test
Conduct according to GB/T2423.41993 test Db method, after the test, check its appearance and indication error according to 10.2.1 and 10.2.2 of this outline.
10.2.14 Insulation resistance
After the alternating mixed heat test, use an insulation resistance meter with a voltage level of 250V to measure the insulation resistance between the two power supply terminals and the shell respectively, and take the smaller value of the two as the insulation resistance of the measuring device, 10.2.15 Insulation strength
After applying 500V and 501Iz alternating damp heat test between the oil-dissipating device and the shell, use the withstand voltage reduction
AC voltage, and the leakage current is allowed to be a low. Keep it for 1min, and there should be no number of strikes and internal damage. 0
10.2.16 Explosion-proof safety
According to GB 3836.1
2SYGRB
Type evaluation results can be processed
11.1 Judgment principle
Judgment principle
In the single item discussion
requirements, it is judged to be unqualified.
Single item judgment and comprehensive
test according to the provisions of the standard.
That is, if there is any unit in the test sample that does not meet the legal requirements of this outline, it is considered unqualified. In the three tests, it is judged as unqualified; in the 11.2 evaluation type evaluation format, see the appendix. During the test, if there is one (measurement requirements or technical requirements) main item item) secondary item item qualified, the comprehensive judgment HS METROL
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