JJG 937-1998 Verification Procedure for Chromatographic Verifiers JJG937-1998 Standard download decompression password: www.bzxz.net
This procedure is applicable to the verification of newly produced, in-use and repaired chromatographic verifiers.

National Metrology Verification Regulations of the People's Republic of China 3JG 937—1998wwW.bzxz.Net
Verification Requlation of Chromatogeaph
1998-07-14 Issued
1999-01-15 Implementation
State Administration of Quality and Technical Supervision Issued
J.IG:937—1998
Verification Requlation of Chromatogeaph Chroinatograph JJG937—1998
This inspection procedure was approved by the National Quality and Technical Supervision Bureau on July 14, 1998, and will be implemented from January 15, 1999
Responsible unit: National Physical and Chemical Technical Committee Drafting unit:
National Center for Standardization of Difficult Substances
Tianjin Metrology Technology Research Institute
The technical provisions of this procedure are limited to Responsible for explaining that the main drafters of this regulation are: Jin Meilan, Zhang Dasi, JJG937-1998 [National Standard for Biological Research Center (Tianjin Municipal Planning and Technology Research Institute)], technical requirements, inspection conditions, inspection items and methods, inspection cycles and handling of inspection results, and inspection summary format. J.: 937--1558, with water attached? Certificate and verification result notice (back format) (1)
..1G 9371998
Chromatographic verification verification procedure
This procedure is used for the inspection of newly produced and repaired chromatographs (hereinafter referred to as the instrument). Overview
This instrument is equipped with 1G7001990: Gas Chromatography Verification Procedure. It is a special inspection instrument designed under the implementation of the gas chromatograph verification procedure. It is mainly used to measure the baseline noise, baseline tolerance, line error, and temperature control of the gas chromatograph. Repeatability
Technical requirements
1 The instrument must meet the technical indicators specified in Table 1. Table 1 Magic parameters
Calibration top plate
Support voltage: u0V
Pressure stability:
t: Voltage: 244°C (SRT: 0-.1007:)30: Temperature 0400
Electric seat compensation:
Calibration electric plastic:
Current: 1mA
Approximate resistance:
[, 700—120 =* , 7m1K 1, etc. Error
yuan off: 10.U3% (reading) ±0.02% (full scale) t.02 m/30 min
fixed value: =0.02 n
recharge: 10.02
.0.1% 710 mr.
yuan difference: =0.02 n
yuan: :0.00
no difference: ±0.02 mA
2 also smaller
JG: 9 57-198
3 Verification conditions
2.1 Environment avoidance: (=):, temperature during verification should not exceed 12.2 Degree of heat: <5
2.3 Surrounding, strong electromagnetic field interference.
3 Verification trap
3.1 DC standard voltage 1-10V
Work. Door % (reading) = 0.005% (full);. Digital multimeter · 6 half, annual error of electrical measurement is %: 3.3 DC resistance box 01
3.4 ​​Megaohm meter 500500M0.
4 Verification items and verification methods
Appearance of the area
4.1 External inspection
1.1.1 The equipment should be equipped with standard lights and the following signs: name of the instrument, instrument registration number, manufacturer! Name, hit, out! .
+.1.2 The filter is connected or intact. 4.2 After the nuclear power is eliminated, press the voltage and other potentials to check the seven functions of the instrument. All the safety devices can operate normally and the indicator lights indicate normal. 5 Insulation test
The insulation resistance between the power supply and the "ground" of the instrument should meet the requirements of Table 1 after applying a DC voltage of about [V at a frequency of 11m1n: 6 Gram current and medium voltage calibration
6.1 Preheat and adjust the calibration instrument according to the requirements of its instructions, select the appropriate function and mother, 5.2 Adjust the voltage of the instrument to zero, and press two 1 to connect the test grass giant road. Adjust the DC standard voltage source, input voltages of 2, 5, 11.20, 50 mV, 0.1, 0.2, 0.3, 0.4, 0.5.0.6, 0.7, 0.8.0.9, 1, 2, 5, and 10 V respectively, record the indicated values, the indication error of the voltage at each point on the instrument shall meet the requirements of Table 1, 6.3 Set the power of the virtual instrument to 10/7 gear: adjust the output of the DC standard voltage source: at 10mV, the regulation is 30miml, and the change of the voltage value, the total stability shall meet the requirements of Table I. 7.1 Press the SRT key of the instrument to adjust the self-resistance of the instrument to zero, then adjust the resistance of the resistance box from 24 to 640, measure once and record the total displayed value, repeat the measurement 3 times, and the error between the measured average value and the standard value should meet the requirements of Table 1. 2. Press the PRT key of the instrument to adjust the voltage limit of the instrument to: then adjust the resistance of the resistance box from 1U to 300 9. Each chip is 20 Measure once and record the indicated value, repeat the measurement 3 times, and the error between the measured value and the standard value meets the requirements of Table 1.
8 In the SPRT and PRT system, measure the resistance at two temperature points of 7°C and 25°C respectively, and observe 10 mi, its electrical properties are always in line with the requirements of Table 1: Program qualitative, bamboo straight safety I (2) Xu stable worry -α large mass transfer Tang small value x100 yuan
9 current beat calibration
proposal can be applied to the mountain as 1, according to the diagram of the false device connected to the test product: good person 09 of the electrical again: record the effective T state
guarantee the main H
annual inspection responsibility position
J.IG937—1998
digital multimeter 1 voltage value, select Ohm's law to let the party position spectrum tester output current, its output current signal should meet the requirements of the self-variable,
1 door sign electric positive test
only the device back to the two calibration circuits, respectively 442:20 door: book calibration it resistance back digital The resistance value should be recorded in accordance with the requirements of Table 1. V. Verification cycle and handling of verification results
11 Verification inspection
All newly produced and repaired instruments must be calibrated and can be put into use only after passing the verification: All instruments in use should be calibrated, and the calibration cycle is 1 year:
12 Handling of verification results
The verification results are qualified instruments that meet the technical indicators. Qualified instruments are issued with verification certificates, and unqualified instruments are issued with verification certificate notifications.
Appendix 1
Testing unit
Manufacturer
Instrument terminal number
Environmental temperature
Verification basis
JJG 437--199H
Instrument verification record format
Name of the equipment used for this verification
Equipment maintenance model
DC voltage
Input value
(standard)
View position
Calculated stability
Time min
Creation temperature/mV
Manufacturer
Pick up time
Device type
Device number| |tt||Return to the environment
Inspection extension period
Inspection extension certificate number
Personal value
(International assessment)
Time/nir
Three, email
1. Standard platinum resistance thermometer (SPRT)
Standard value
1st time
2. PRT
Standard information
1st time
JJC:937-1998
Safety Device Test Meeting
2nd
3rd
False Device Test Rate
2nd
3rd
Half Average
4. Stability of Electrical Group Values
afn in
H, Current, A
6. Absolute Nine Shame
Test Products
7. Approval
440 Test Values
TIG 937
Inspector:
Time it
20 Welcome Values
Supervision:
Creation Year Times
Appendix 2
, Insulation Voltage
J.[G 937—1998
Verification certificate and verification result notice (back format), error of high current voltage
3. Stability of medium voltage
4. Stability of voltage value
5. Stability of voltage bias
6. Error of voltage value
7. Specific current
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