Some standard content:
National Metrology Verification Standard of the People's Republic of China JJG 178—1996
Visible Range Speciruphotometer
Promulgated on 1996-12-31
Implemented on 1997-06-01
Promulgated by the State Bureau of Technical Supervision
JJG 179—1996
Verification Standard of
Visible Range SpectrophotometerJJG 178—1996
Replaces JJG 178· 1989
This inspection and testing procedure was approved by the State Bureau of Technical Supervision on December 31, 1996, and will be implemented from June 1, 1997.
Responsible unit: Zhejiang Provincial Bureau of Technical Supervision
Jiangsu Provincial Technical Supervision and Inspection Institute
Drafting unit:
Drafting unit of technical provisions of this regulation Wei Fuxian interpretation Main drafters of this regulation:
Participating drafters:
Yang Rujun
Ji Xianliang
Xia Junan
JJG178—1996
【Zhejiang Provincial Technical Supervision and Inspection Institute）【State National Standard Material Research Center)
【Shanghai Institute of Metrology and Testing Technology】
Technical requirements
Certification documents
Certification plate and verification method
V. Verification result processing and verification period
Reference table
Record A
Record matching method
Record (verification record format
Record) Verification certificate card (back plate) format
JJG176—1996
Appendix: Verification result notification position (back plate) broadcast record
JJG: 179 1006
Verification Procedure for Visible Spectrophotometer
This specification is applicable to new manufacture: after use and repair, the range is n, or the visible spectrophotometer is required to be eliminated.
The spectrophotometer (below) is a device that measures the absorption of monochromatic radiation of different wavelengths according to the absorption of the visible light (light) by the object. The instrument consists of a light source system, a monochromator system, and a sample detection system. The mathematical formula is as follows:
-- - e
: 4--the light layer of the substance;
: other single white radiation channels:
: the ratio of the single white radiation:
: the ratio of the single white radiation:
: the length of the path through the object being measured!
: the concentration of the substance.
2 Technical requirements
Classification of instruments in recent countries
Note: Classification of instruments in this table
2 Appearance and preliminary inspection
2.1 The instrument shall be marked with the following: instrument name, model, manufacturer name, direction, serial number, working source voltage and power.
2.2 The instrument shall be able to be placed firmly on the working platform, and all fasteners shall be well fastened: regulators, buttons and switches shall all be able to work properly, and the cables shall be tightly matched and in good condition. 2.3 The marks and pointers on the instrument ends shall be clear, and the engraved lines and numbers shall be complete. 2.4 The alignment shall be good, and the light source shall be properly selected and positioned. 2.5 When the instrument is in working state, the light source shall emit light smoothly without flashing. When the wavelength is set to 5m, the sensor can see the normal yellow light spot in the product room: 1
JIG 1781996
Table 1 Instrument classification or technical requirements
Rice long light sea art
I+0.1+ 0.3+3.5
Three: Effective recovery device (verification standard) point load number safety efficiency +1: ()
Please create
2.5.52.(1
12↓+t.Ixs
2. The average end of the instrument spectrum range (there is a validity shift open instrument comfort, you can choose the appropriate more sensitive attenuation level: the light adjustment system can transmittance exceed [
2 to absorb the light of the safety pool and then the light is clear, the heart is scratched and spotted, any function has cracks. 3 Carbon determination
31 can only be zero 3 internal source can cause the transmittance value change to change the child will meet the requirements of Table 1 32 light outflow in m drift called The transmission value deteriorates into a special requirement of 1: 5 source voltage 20 variable head three more, this end transmittance value customization meets the requirements of Table 1. The accuracy and wavelength accuracy of the image
pregnancy are accurate. The transmission ratio and transmission ratio of the device are accurate. This can be compared with the required combination of the table! The requirements of the scattered radiation rate
light type device is also at 31, the nuclear mirror type device is at a wavelength of 2Vm, the general radiation rate is not ten "shown,
7 old Bei band
light type instrument optical bandwidth should not be "light 1 question Zhong request 2
8T-A Shift deviation
I.TG178—1996
For instruments with manual shifting, the absorbance deviation caused by the selector switch (or key) shifting shall meet the requirements of Table 1:
The matching of the absorption cell
The difference between the light path of the absorption cell and the absorption cell (at 440nm and 70nm) shall not exceed 0.s%
10Insulation electric current
The insulation electric current of the device shall not be less than 5M
Test conditions
[Test environment conditions
11.1 Temperature 1h-30, humidity less than 85%. 11.? Power supply voltage (220+22)V, frequency (50+1)Fz11The instrument detection area shall not be exposed to strong light directly; the workbench where the instrument is placed shall not be exposed to strong light directly; - Stable: no strong acid field, electric field interference, no strong airflow and corrosive gas,
12 calibration equipment
12, 1 small transformer, current specification is 00VA, input 0~2V transformer, 12.2 frequency meter, 45~55Hz, accuracy 0.5%-12.3 precision meter, accuracy 2.5 level, 12.4 megohmmeter, test voltage 500V, voltage 1.0. Standard instrument and standard object
lamp, only the old one is long (low demand lamp is used in construction): 13.21-
oxide, titanium oxide, potassium zirconium, sensitive glass, etc., with 2, 4, 6n1 band standard values measured under the station, the wavelength is not determined according to the instrument to be tested, etc., and the wavelength is divided into 0.2, 0.4, 0.6. The wavelength standard value of the glass filter must be given by calibration. 13.3: Standard filter, technical performance should not be lower than JG61219931 standard filter, the test level should be longer; laser acceptance (wavelength accuracy ± 1nm, bandwidth ism): the test range of the peak wavelength of the filter is: 37-400mm, 43n-470mm, 530:57)mm, 0-90.rr760.790 nmo
13.4 For the visible light region spectrum filter, the nominal value of the radiation protection ratio is 10%, 20%, 0% (or 10%): the transmittance ratio is better than 0.2%, 0.5% respectively. 13.5 Stray scattering rate measurement filter, cut-off type nominal half-high wave length is (4705)m=1m400+5)r:, cut-off length is 14301m and 365 respectively, cut-off area brightness is less than 3, through-point actual chemical conversion area corresponding purchase
this radiation ratio is not more than
industrial blanket solution, single mass concentration is 50 force
four verification items and verification methods
14 new device does not have the current agent tube? -6 and 8-·m system inspection width can be determined in the first article); after the use of the device, etc.? , 4, 5, 6, 8 and 3.1, 3.2 inspections, the necessary reports are required according to the requirements of the sections 3.3, 7, 9: Article 1 Inspection No.
15 Appearance and preliminary inspection
According to the requirements of Article 2,
Double group chemical price small, according to the financial requirements after preheating, carry out the following items: 15 Stability
1.1 Under the condition that the photoelectric detection is not affected by the center: adjust the zero point regulator to the selected emission ratio zero point, and observe 31 to take the smallest drift of the emission ratio, which is the instability. 16.2 Set the wavelength of the false screen to 101 from the center of the light source, adjust the zero point, open the light gate, and let the light and the detection unit receive light for 5m: use the relevant card of the optical adjustment system to adjust the instrument transmittance to 5% (digital display is close to 100%), observe for 3min, read the transmittance indication, and move to the position of the amplified source, which is the photocurrent stability
6.3. Drive the light at 65\nm, press the modulator between the instrument and the voltage regulator, input 220V voltage, adjust the instrument transmittance value to 95% (digital display 100%), then release the voltage to 1V, and record the change of the transmittance value of the instrument to: then use the required voltage leakage to 22%V, the instrument will not reach 95% (digital display 100%): then increase the voltage to 212V, record the change of the transmittance value of the instrument, that is, turn off the power to change the degree,
17 full range and length more complex
.1 wheat chain instrument light low type third implementation, according to the light increase specification of the test piece to select a digital film? This is less than 3. Place the filters in the appropriate position within the product search, and make the effective filter line within the range of ten: the filter can be a long square wavelength to show the value of the transmittance ratio, find the peak wavelength of the product, and measure it continuously for 3 times. 17.2 Liu Guang deleted the tube 1 award for the second instrument (also not too regular type color instrument before), according to the controlled instrument and the side range, the water filter made of the same platform or the standard wavelength of the original chemical drink method, the oxidation decision: the staggered glass filter research unit collection friction price standard wavelength, the wavelength of the force involved, measure it continuously for 3 times, and record the wavelength measurement value: the instrument end of the table record the absorption peak of any wavelength standard such as oxidation feed 647chuan place, the station chief decision year.
17.3 Accuracy of measured wavelength () :.4
Formula:>--- Each wavelength measurement value is obtained, n.; correspondingly,
wavelength complexity formula: 2) calculation:
JJG:1781996
1 Accuracy of transmittance ratio Transmittance ratio complexity
18.1 The nominal values of transmittance are 10%, 20% respectively: 0 % (or 40%) positive spectrum neutral light film at 410, 516, 635um wavelength, with the air as reference, respectively measure the transmittance of the grass filter, and measure 3 times in a row (before each measurement, the Liu equal point and 10 rate are corrected), and the required transmittance is calculated by formula (3): 4
Formula: 182 The transmittance of the light film is calculated by formula (4): a.ax ..
In this formula, the selected filter is 546m with a wavelength of 30, and the signal is mixed with the auxiliary light rate
. The sharp end of the drum is set at a wavelength of 420, with air as the surface ratio, Sichuan will require 13.5, (stable) half-height length is 470 type 1 temperature light; the optical device is 36m long, with a nominal value that meets the customer's requirements of 13.5) and a good wavelength of 400. The replacement filter ratio is used, and the room air is used for excitation: 5 08. The sodium nitrite droplets are taken as the reference, and the measured value of avoidance is: that is, the spectrum width
is 20 degrees in the state or wave zone, and the wavelength is 45%m (36.1m). The instrument group should avoid the northeast value, and after adjustment, the speed and temperature will move towards a piece of the country. The two independent emission ratios must be output! (The wavelength is half of the output value: then assuming that the light band width is - -
Product: The cumulative value of the thermal line
21·4 shift editor
has,: the instrument is relatively dynamic, the excitation zone is set to the left m, the instrument is cumulatively corrected: the light adjustment device will indicate the transmitted light U step (it is necessary to set a block on the light path or slightly adjust the abdomen to make it longer, change the full absorption point block, the absorbance is 0.5232:1 for a 4 The instrument that changes the deviation does not need to be inspected. 2. The compatibility of the absorption leak. JJG178-199G After the other items of the instrument are qualified, the wavelength is set at 4°C, and the potassium dichromate solution (the complex protein content is about 30°C) is injected into the absorption cell of the same optical path attached to the instrument: at the wavelength of 0.1°C, distilled water is injected into the absorption cell. The transmittance of the battery is 95% (100% for the digital instrument), and the transmittance of the other batteries is measured: the transmittance is not difficult to measure, 5 batteries can be used with my set. 23 Insulation resistance
Use a 4V megohmmeter, when the instrument is not in working state, measure the resistance between the rated load and the outer shell of the product 24. The type of visible spectrophotometer that is completely included in the voltage range of this regulation can be signed according to this regulation, and the requirements of the instrument manual can be used. Calibration, and make a note in the calibration results. 5. Calibration results and calibration cycle
25. All the above-mentioned calibration data shall be recorded on the signed record paper. The data of the relevant items shall be filled in the calibration certificate or the calibration result book.
26. When the instrument is calibrated before the test according to this regulation, a calibration certificate shall be issued, and the category of the instrument shall be indicated according to the requirements of Table 1 (the basis for classification of optical gain bandwidth and shift error); for instruments that have been used and completed according to Article 3.6, if a few other items are unqualified but not affecting their use, a calibration certificate may be issued, but the conditions and methods for permitted use shall be indicated on the certificate:
2. The calibration period is 1. When the conditions change (such as replacement or repair of accessories or monochrome sensors, detectors, etc. that affect the main performance of the instrument), the visual inspection shall be carried out in time: Appendix A
3t:5 02
Relative intensity
178199
Reference wavelength table
The wavelength value of the visible spectrum line of mercury lamp is affected by its relative strength. Relative intensity
Note: The wavelength of the light is larger than 1).5mm instrument% is 365.12nn suitable for the instrument; the instrument with a wavelength greater than 2.51m: is not suitable for the instrument with a wavelength greater than 365.02mm and 576.96rr. Table A2'
.15.42
The absorption peak potential of iron oxide liquid is considered to be the value of the spectrum 3×-17m or The material is not accepted within 333.39315.55, and the absorption is large. The total wavelength of the light is 36.5.4 and 36.5.4, respectively. Table A3 and A4. Table A4. Iron oxide glass condenser absorbs the peak value of the wavelength of the light. Note: The absorption of the double-ended glass filter is not suitable for the absorption of 365.4n and 377,4r. Table AF. Lead glass filter absorbs the peak value of the light. The absorption of 17 nm is only suitable for the absorption of 513. 7mm and 29,m, and the absorption of 2.5 nm and 585.9 is effective.1Use the transmittance of the neutral filter with the nominal value of 10%, 20% and 0% (or 40%) at 410, 516 and 635um wavelength respectively, and take the air as reference, measure the transmittance of the filter respectively, and measure 3 times in succession (before each measurement, calibrate with 10% and the ratio before each measurement), and calculate the transmittance of the filter according to formula (3): 4
Formula: 182The transmittance of the filter is calculated according to formula (4): a.ax ..
In this formula, the selected filter is 546m with a wavelength of 30, and the signal is mixed with the auxiliary light rate
. The sharp end of the drum is set at a wavelength of 420, with air as the surface ratio, Sichuan will require 13.5, (stable) half-height length is 470 type 1 temperature light; the optical device is 36m long, with a nominal value that meets the customer's requirements of 13.5) and a good wavelength of 400. The replacement filter ratio is used, and the room air is used for excitation: 5 08. The sodium nitrite droplets are taken as the reference, and the measured value of avoidance is: that is, the spectrum width
is 20 degrees in the state or wave zone, and the wavelength is 45%m (36.1m). The instrument group should avoid the northeast value, and after adjustment, the speed and temperature will move towards a piece of the country. The two independent emission ratios must be output! (The wavelength is half of the output value: then assuming that the light band width is - -
Product: The cumulative value of the thermal line
21·4 shift editor
has,: the instrument is relatively dynamic, the excitation zone is set to the left m, the instrument is cumulatively corrected: the light adjustment device will indicate the transmitted light U step (it is necessary to set a block on the light path or slightly adjust the abdomen to make it longer, change the full absorption point block, the absorbance is 0.5232:1 for a 4 The instrument that changes the deviation does not need to be inspected. 2. The compatibility of the absorption leak. JJG178-199G After the other items of the instrument are qualified, the wavelength is set at 4°C, and the potassium dichromate solution (the complex protein content is about 30°C) is injected into the absorption cell of the same optical path attached to the instrument: at the wavelength of 0.1°C, distilled water is injected into the absorption cell. The transmittance of the battery is 95% (100% for the digital instrument), and the transmittance of the other batteries is measured: the transmittance is not difficult to measure, 5 batteries can be used with my set. 23 Insulation resistance
Use a 4V megohmmeter, when the instrument is not in working state, measure the resistance between the rated load and the outer shell of the product 24. The type of visible spectrophotometer that is completely included in the voltage range of this regulation can be signed according to this regulation, and the requirements of the instrument manual can be used. Calibration, and make a note in the calibration results. 5. Calibration results and calibration cycle
25. All the above-mentioned calibration data shall be recorded on the signed record paper. The data of the relevant items shall be filled in the calibration certificate or the calibration result book.
26. When the instrument is calibrated before the test according to this regulation, a calibration certificate shall be issued, and the category of the instrument shall be indicated according to the requirements of Table 1 (the basis for classification of optical gain bandwidth and shift error); for instruments that have been used and completed according to Article 3.6, if a few other items are unqualified but not affecting their use, a calibration certificate may be issued, but the conditions and methods for permitted use shall be indicated on the certificate:
2. The calibration period is 1. When the conditions change (such as replacement or repair of accessories or monochrome sensors, detectors, etc. that affect the main performance of the instrument), the visual inspection shall be carried out in time: Appendix A www.bzxz.net
3t:5 02
Relative intensity
178199
Reference wavelength table
The wavelength value of the visible spectrum line of mercury lamp is affected by its relative strength. Relative intensity
Note: The wavelength of the light is larger than 1).5mm instrument% is 365.12nn suitable for the instrument; the instrument with a wavelength greater than 2.51m: is not suitable for the instrument with a wavelength greater than 365.02mm and 576.96rr. Table A2'
.15.42
The absorption peak potential of iron oxide liquid is considered to be the value of the spectrum 3×-17m or The material is not accepted within 333.39315.55, and the absorption is large. The total wavelength of the light is 36.5.4 and 36.5.4, respectively. Table A3 and A4. Table A4. Iron oxide glass condenser absorbs the peak value of the wavelength of the light. Note: The absorption of the double-ended glass filter is not suitable for the absorption of 365.4n and 377,4r. Table AF. Lead glass filter absorbs the peak value of the light. The absorption of 17 nm is only suitable for the absorption of 513. 7mm and 29,m, and the absorption of 2.5 nm and 585.9 is effective.1Use the transmittance of the neutral filter with the nominal value of 10%, 20% and 0% (or 40%) at 410, 516 and 635um wavelength respectively, and take the air as reference, measure the transmittance of the filter respectively, and measure 3 times in succession (before each measurement, calibrate with 10% and the ratio before each measurement), and calculate the transmittance of the filter according to formula (3): 4
Formula: 182The transmittance of the filter is calculated according to formula (4): a.ax ..
In this formula, the selected filter is 546m with a wavelength of 30, and the signal is mixed with the auxiliary light rate
. The sharp end of the drum is set at a wavelength of 420, with air as the surface ratio, Sichuan will require 13.5, (stable) half-height length is 470 type 1 temperature light; the optical device is 36m long, with a nominal value that meets the customer's requirements of 13.5) and a good wavelength of 400. The replacement filter ratio is used, and the room air is used for excitation: 5 08. The sodium nitrite droplets are taken as the reference, and the measured value of avoidance is: that is, the spectrum width
is 20 degrees in the state or wave zone, and the wavelength is 45%m (36.1m). The instrument group should avoid the northeast value, and after adjustment, the speed and temperature will move towards a piece of the country. The two independent emission ratios must be output! (The wavelength is half of the output value: then assuming that the light band width is - -
Product: The cumulative value of the thermal line
21·4 shift editor
has,: the instrument is relatively dynamic, the excitation zone is set to the left m, the instrument is cumulatively corrected: the light adjustment device will indicate the transmitted light U step (it is necessary to set a block on the light path or slightly adjust the abdomen to make it longer, change the full absorption point block, the absorbance is 0.5232:1 for a 4 The instrument that changes the deviation does not need to be inspected. 2. The compatibility of the absorption leak. JJG178-199G After the other items of the instrument are qualified, the wavelength is set at 4°C, and the potassium dichromate solution (the complex protein content is about 30°C) is injected into the absorption cell of the same optical path attached to the instrument: at the wavelength of 0.1°C, distilled water is injected into the absorption cell. The transmittance of the battery is 95% (100% for the digital instrument), and the transmittance of the other batteries is measured: the transmittance is not difficult to measure, 5 batteries can be used with my set. 23 Insulation resistance
Use a 4V megohmmeter, when the instrument is not in working state, measure the resistance between the rated load and the outer shell of the product 24. The type of visible spectrophotometer that is completely included in the voltage range of this regulation can be signed according to this regulation, and the requirements of the instrument manual can be used. Calibration, and make a note in the calibration results. 5. Calibration results and calibration cycle
25. All the above-mentioned calibration data shall be recorded on the signed record paper. The data of the relevant items shall be filled in the calibration certificate or the calibration result book.
26. When the instrument is calibrated before the test according to this regulation, a calibration certificate shall be issued, and the category of the instrument shall be indicated according to the requirements of Table 1 (the basis for classification of optical gain bandwidth and shift error); for instruments that have been used and completed according to Article 3.6, if a few other items are unqualified but not affecting their use, a calibration certificate may be issued, but the conditions and methods for permitted use shall be indicated on the certificate:
2. The calibration period is 1. When the conditions change (such as replacement or repair of accessories or monochrome sensors, detectors, etc. that affect the main performance of the instrument), the visual inspection shall be carried out in time: Appendix A
3t:5 02
Relative intensity
178199
Reference wavelength table
The wavelength value of the visible spectrum line of mercury lamp is affected by its relative strength. Relative intensity
Note: The wavelength of the light is larger than 1).5mm instrument% is 365.12nn suitable for the instrument; the instrument with a wavelength greater than 2.51m: is not suitable for the instrument with a wavelength greater than 365.02mm and 576.96rr. Table A2'
.15.42
The absorption peak potential of iron oxide liquid is considered to be the value of the spectrum 3×-17m or The material is not accepted within 333.39315.55, and the absorption is large. The total wavelength of the light is 36.5.4 and 36.5.4, respectively. Table A3 and A4. Table A4. Iron oxide glass condenser absorbs the peak value of the wavelength of the light. Note: The absorption of the double-ended glass filter is not suitable for the absorption of 365.4n and 377,4r. Table AF. Lead glass filter absorbs the peak value of the light. The absorption of 17 nm is only suitable for the absorption of 513. 7mm and 29,m, and the absorption of 2.5 nm and 585.9 is effective.4
Table A3·
Table A4·
Iron oxide glass condenser absorption peak value test wavelength light
Glass filter absorption peak value test wavelength light
Note: The absorption peaks of 365.4n and 377,4r are not suitable for the double device with a wavelength greater than 12 nm. Table AF·
Lead glass filter absorption peak value test wavelength light
Music: The main drop width is only 17 nm, and the absorption peaks of 513. 7mm and 29,m are suitable for 2.5 nm and 585.94
Table A3·
Table A4·
Iron oxide glass condenser absorption peak value test wavelength light
Glass filter absorption peak value test wavelength light
Note: The absorption peaks of 365.4n and 377,4r are not suitable for the double device with a wavelength greater than 12 nm. Table AF·
Lead glass filter absorption peak value test wavelength light
Music: The main drop width is only 17 nm, and the absorption peaks of 513. 7mm and 29,m are suitable for 2.5 nm and 585.9
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