Verification Regulation of the Standard Copper/Copper-Nickel Thermocouple
Some standard content:
Verification Procedure for Standard Copper-Copper Nickel Thermocouples J.IG I5-1999 JIG S190 This document was signed by the National Quality Supervision Bureau on May 14, 1999 and dated September 1, 1999. Responsible unit: National Temperature Standard Metrology Technical Committee Drafting unit: Liaoning Quality Inspection Institute This document is entrusted to the National Temperature Standard Metrology Technical Committee for interpretation. The main drafters of this document are: Yun Fei (Liaoning Provincial Metrology and Measurement Institute) and Huo De (Liaoning Provincial Metrology and Measurement Institute). The initiator is: Yu Buchun (Liaoning Provincial Quality Inspection and Testing Research Institute) Related Information (Ningbo Quality Inspection and Testing Research Institute) Pregnancy (Ningbo Heavy Industry Measurement and Testing Research Institute) 8
Technical requirements
Specification equipment
3 Inspection method
Processing of inspection results and inspection period·bzxZ.net
Attachment A Copper Copper Comprehensive (Kangdiao) Thermal Deviation (T type): (): () Shallow loss..
Appendix B Standard Steel-Copper Nickel Thermoelectric Data Inspection Record Appendix
Inspection Certificate Back Format.
Use actual values to calculate the interpolation formula coefficients,,,, and are,. Method s8
Standard copper-copper-nickel thermocouple verification procedure
This procedure is applicable to the initial verification, subsequent verification and convenient inspection of the standard copper-nickel (Kangbao) thermocouple (hereinafter referred to as the standard thermocouple) with a measurement capacity of 200U; 1 Technical requirements
1.1 The technical requirements of the newly manufactured copper and nickel thermocouples shall comply with the requirements of the national standard (T2403-19893).
1.2 The total length of the newly manufactured thermocouple shall not be less than 1.2m, and the self-diameter of the electrode shall be 0.3\, 0.5ur, and consistent with the copper wire diameter.
1.3 The welding point of the thermocouple measuring end shall be smooth and the surface shall be smooth. Smooth, pores, the diameter of the welding point is about two grids of the middle diameter, the electrode is not allowed to be folded, bent, and the external store has no insulation or insulation storage: 1.4 The new thermocouple requires about two electrodes, and its uneven thermoelectric potential: should be corrected according to Table 1. Table 1
The thermocouple is bonded to a uniform medium to form a thermocouple. When the reference end is 0, the thermoelectric potential at 196 is (-553948) uV, and the thermoelectric potential at 90 is: (3813±31) V
1.6 The thermocouple is inspected according to this procedure. The
verification result expands the uncertainty. When the receiving end is = 1, , in
-180% applicable is 0.3 seven, in other applicable B.2
2 calibration equipment
the calibration method of thermoelectric bias adopts the comparison
method (wiring as shown in the figure!)
standard equipment and supporting equipment include
first-class standard pin-core thermometer,
83.803 3K-419.3271: applicable
2.1.2: 0.01 line low potential DC potential 1-there is a redistribution rate: 3-multi-point grid conversion: 3 variable toe travel: 4-fixed table: 5 mountain students. Freezing point needs: 1. Use the precise temperature, heat, and temperature, with the card to send
difference (minimum 0.1V) and start the setting, or do not pay attention to the quality of the electrical measuring equipment.
u.01 level 102 mark, 0.5 level competitive safety table U.1 pay energy range: only: 2.1.3
precision thermometer, measurement (0-50, the scale is. [or when The number of products is 2.1.4
2.1.5 precision computer card power supply (former battery), its stability is 510-0 2.1.6
·80 billion: low temperature, its effect area or internal certification total internal point product difference does not exceed 0.02.1.7 liquid chlorine, one purple block, the missing piece is 0mm, the people are 150rm, A upper end is 2, the hole price is $8m, 120mm|| tt||2.1.8: The room should be provided with 0.300mm temperature, and the temperature of the room should be 0.300mm at any two points in the working area. 2.1.9 Water "phase point bottle and ice point device and its insulation device, 2.1.10 Press the switch and the conversion table, the potential value is less than 10.1.V, 1.2 The given room kettle meets the requirements of the corresponding equipment: 3 Verification method
3.1 The thermocouples made should be tested first, and the test method should be The test times are as follows: put the test wire (single wire) into a glass tube with a diameter of (20-50):tn, length of m and thickness of (2:3) preferably 15m, and connect it to the galvanometer: wrap the head of the test wire with the simple diagram, and place it in liquid chlorine water for 5 minutes. Read the thermal potential after stabilization and take the maximum value as the uneven thermal potential. 3.2 The measurement of thermoelectric potential is carried out under the condition of (2) = 2), and the first-class standard electric plate transformer is used to test the thermoelectric valve for two hours. The resistance value at the water triple point is 1.01r.
3.4 Pre-test thermometer and thermoelectric test installation: 3.4.1 After the two electrodes of the thermoelectric test reference end are connected to the regulating load respectively, they are inserted into the freezing point solution. The depth shall not be less than 200mm1. That is, the leakage should be a piece of thermocouple:
.4.2 or above, not given below, only used for the following thermal deviation calibration
3.4.330:, 60℃, 903 points for inspection in the mutual temperature.. The inspected thermocouple shall be directly inserted into the constant temperature increase, and the insertion depth shall not be less than 2Uum. The center of the temperature sensing element is in the same horizontal plane as the measuring end of the heated element. 3.4.4 -40, -79 -196 Let the platinum resistance thermometer and the measuring end of the heated element be calibrated in low-temperature alcohol at 2 points; insert the pin into the copper block and the finger hole at the liquid nitrogen point. The insertion depth should not be less than 200. The 79℃ point calibration can be carried out in solid carbon dioxide (ice) (add a little alcohol near the measuring end). 3.5 The standard thermometer and the measuring end should be calibrated at least 10ml near the testing point. The deviation and over-test of the temperature should be +.
3. According to the measurement order, measure the self-calibration of the standard resistance and the standard thermometer respectively, and the thermal potential of the tested thermometer should be less than 1 "ring each time, and record it according to the table. Standard distance standard platinum resistance thermometer → tested element - micro-calibration 2... → nominal calibration point?
Standard electric energy standard electric ring meter avoid inspection 1-drum inspection?*-rice inspection direction in the reading interpretation, the brand recent change shall not be orange soil.1T:4 Verification result processing and verification cycle
4.1 First (1) calculate the resistance value R () 36
Where: and are the standard resistance thermometer obtained by the manufacturer in the scientific and technological standard: R
After the temperature is corrected, the actual resistance of the standard thermometer is obtained
4.2 According to (2) and (3), calculate the resistance ratio W of the aluminum resistance meter, and the value of the surge temperature and the point temperature R)
W,-RG.OIT)
= dw or?)
. Ten (2) formula Le resistance ratio:
by (Wu calculated the standard electric positive thermometer electrical minimum value standard aluminum resistance overflow in the wood installation benefit measured water phase point female resistance value (only) (2)
constant source according to the actual temperature 6 Bo (, standard platinum thermometer temperature to be used as the certificate W-7-/dt table to calculate:
calibration point name text issued
at nominal temperature! The risk ratio
at, the differential resistance ratio:
4.3 adopt month (4) formula to sell the measured thermoelectric potential, corrected to the thermoelectric potential at the calibration point. i)
e = ,
Wherein:
Thermoelectric potential value of the calibration point (V):
Thermoelectric potential value of the test street near the danger point (V):
Thermoelectric potential absorption rate of the danger point center:
Use (3) to calculate the temperature
4.4 List the t,,. obtained by each of the seven fires that are just heated (see Appendix C), and derive the 2:-1mnt range., * values according to the annual 10t: network, and then use (5) to calculate the mountain coefficient a: (see Appendix D). e, =a,
4.5 Newly manufactured thermocouples shall be tested for 2 times. The difference between the 2 test results shall not exceed 0.1℃. Half of the difference shall be interpolated by formula to obtain 41, 42, 43, 5, 2, coefficients (see Appendix 1) 4.6 The difference between the test result of thermocouples in use and the result given in the first test certificate shall not exceed 0.2 within the range of 200T:-10M. It can be tested only once. If it exceeds 0.2, it needs to be rated twice. If the temperature exceeds 0.11 for the second time, it should be downgraded to 7. grade for use
4.In order to check the feasibility of the calculation results, the calculation results shall be determined on a regular basis. The difference between the selected values and the measured values of the system or the calculation results of each calibration point shall not exceed 1. 4.8 Fill in the thermocouple calibration results in the calibration certificate according to the requirements of Appendix VII, and give the results to the microvolt level. 4.9 Thermocouples that have passed the calibration shall be issued a calibration certificate. Unqualified thermocouples used for other purposes shall be downgraded to other positions for use in cooperation with other thermocouples, and a certificate of completion shall be issued. 4.10 The thermocouples shall be determined according to the specific situation, and the length of the thermocouple shall not exceed 1 generation. 85
Copper-copper storage (element room) Thermoelectric unit [I type match], (r points table iravi
. 5.115
- 5. 14:4
. 5.osn
lin,43
-4,365
-4 489
- 4 46b
- 4 443
-4 3t0
- 4 251
- 124:
-·t.1177
- -1 235
2.81× :31.55
- 2 216
.11.65
-2 155
- 087
-1 h33
-1 61-
- 0 345
-3 124
.37.7F
Reference overshoot:
Prohibit position
Verification:
Appendix A
Verification record of standard copper-copper-zinc thermoelectric code
Test and modification parts,
Standard resistance support:
Standard specific resistance standard meter
W -R(RD.DT)&
Record:
Temperature difference (t
Thermal self-foaming range
Test 3
Environmental degree:
Test 4
Test grade!
Potassium:
Attached ℃
Verification certificate back
Verification result
Thermoelectric potential (uV)
Degree ()
e:-at-a2t'+ase
Caution: Above
e; -bu-brti +oat?
Parameters are
Thermoelectric potential (uv)
Appendix D
Use actual values to calculate the interpolation formula coefficients 1, 4 and b1, b method (-200.0) range, use (1) to calculate): ":, coefficients: l = -.0636259e 4h(.m21749-0.00088332015a2 -1.13001 × 10 2 +6.54590 ×-1g- 3.32600×10 5 1463--4.10914x 10-* 4 1 2.77410 :. 10 *e -%-2.75529 : 10-7p 1562 (0-100)T, calculated using formula (2), coefficient: 31-n.1000-0.050000060 +0.0111111e *.52=2.77778×11-4ea12.22222×10 35.55556×10 4cml6g-1.65185 :10 5e0 -1.85185*10 *+m + 6.17284 10-0g..Example
The difference between the final result of the first European thermoelectric calibration shall not exceed .1, and the flat tooth value shall be taken: the difference between the thermoelectric in use D3.1
and the original certificate shall not exceed .2T. The result of this calibration, peak 1-after calculation of the internal estimate: the steps and methods of body correction are more than whether the clothes 1)1 rate example table
-79 :5
2763 0
ask to obtain the internal operation formula of thermoelectric potential and temperature: use table [2 to calculate,
P,-.38.805044110.0163351,20.00003611,-0.03029:
a.02.74966-
0.0088332.
2 - ,— 38.805044
0.01130utr
G.ID06569,- x
9 00033326#
rz;-door.0463351
-4 10914K J6-68 J!
2.774ix 19 m
93,XJ1741
-55.909351
4.9(146.74
..055>
U:[346762
0.106.335s
:5-0.00003611
In order to verify the calculation results, the calculated values and measured values shall not be inconsistent with each other. V: The results of the test are shown in Table 123
- [4′5.7
r, =+
ao + -ms -s.75
asn211 at gs
* - : 1176) + #38414 - ,1 1 - 7521, 536 - 5553. 39i.n1000-0.050000060 +0.0111111e *.52=2.77778×11-4ea12.22222×10 35.55556×10 4cml6g-1.65185 :10 5e0 -1.85185*10 *+m + 6.17284 10-0g.. Example
The difference between the first European thermoelectric test result and the final result shall not exceed .1, take the flat tooth value: the difference between the thermoelectric in use D3.1
and the original certificate shall not exceed .2T, the result of this test, peak 1-after calculation of the internal estimate: the correction steps and methods of the bucket body are more or less clothing 1)1 rate example table
-79 :5
2763 0
Ask to get the internal formula of thermoelectric potential and temperature: Use table [2 to calculate,
P,-.38.805044110.0163351,20.00003611,-0.03029:
a.02.74966-
0.0088332.
2 - ,— 38.805044
0.01130utr
G.ID06569,- x
9 00033326#
rz；-门.0463351
-4 10914K J6-68 J!
2.774ix19 m
93,XJ1741
-55.909351
4.9(146.74
..055>
U:[346762
0.106.335s
:5-0.00003611
In order to verify the calculation results, the calculated values and measured values shall not be inconsistent with each other. V: The results of the test are shown in Table 123
- [4′5.7
r, =+
ao + -ms -s.75
asn211 at gs
* - : 1176) + #38414 - ,1 1 - 7521, 536 - 5553. 39i.n1000-0.050000060 +0.0111111e *.52=2.77778×11-4ea12.22222×10 35.55556×10 4cml6g-1.65185 :10 5e0 -1.85185*10 *+m + 6.17284 10-0g.. Example
The difference between the first European thermoelectric test result and the final result shall not exceed .1, take the flat tooth value: the difference between the thermoelectric in use D3.1
and the original certificate shall not exceed .2T, the result of this test, peak 1-after calculation of the internal estimate: the correction steps and methods of the bucket body are more or less clothing 1)1 rate example table
-79 :5
2763 0
Ask to get the internal formula of thermoelectric potential and temperature: Use table [2 to calculate,
P,-.38.805044110.0163351,20.00003611,-0.03029:
a.02.74966-
0.0088332.
2 - ,— 38.805044
0.01130utr
G.ID06569,- x
9 00033326#
rz；-门.0463351
-4 10914K J6-68 J!
2.774ix19 m
93,XJ1741
-55.909351
4.9(146.74
..055>
U:[346762
0.106.335s
:5-0.00003611
In order to verify the calculation results, the calculated values and measured values shall not be inconsistent with each other. V: The results of the test are shown in Table 123
- [4′5.7
r, =+
ao + -ms -s.75
asn211 at gs
* - : 1176) + #38414 - ,1 1 - 7521, 536 - 5553. 39i.n
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