Omega HH931T, Руководство пользователя

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Service Information
4-2
8. Connect the miniature thermocouple connector of the Thermocouple Cable to
Channel 1 of the UUT.
a. For two channel UUTs using the Split Thermocouple Cable, connect the
miniature thermocouple connector of one leg to the UUT Channel 1
input, and the miniature thermocouple connector of the other leg to the
Channel 2 input.
9. Connect the opposite end of the Thermocouple Cable (or the single-connector end
of the Split Thermocouple Cable) to the Thermocouple Calibrator thermocouple
output.
10. Set the Thermocouple Calibrator thermocouple type to the desired thermocouple
type.
11. Allow at least five minutes for this connection to stabilize.
12. Set the calibrator to output to the first Standard Value in Appendix C for the
desired thermocouple type.
13. Record the UUT measurement in the Reading column of Appendix C for the
appropriate Standard Value.
14. Record the cable correction value for the Thermocouple cable in the Cable
Correction column of Appendix C.
15. Subtract the Cable Correction value from the Reading and record the result as the
Corrected Reading (Reading – Cable Correction = Corrected Reading) in Appendix
C.
16. Compare the Corrected Reading to the tolerances stated in the 2-Sigma Tolerance
column of Appendix C to determine whether the UUT measurement is within
published specifications.
17. Repeat Steps 12 through 16 for each remaining Standard Value in Appendix C for
the current thermocouple type.
18. Repeat Steps 4 through 17 for each desired thermocouple type.
19. If Open Lead Detection was disabled in Step 4 above, enable the feature as shown
in Section 3.11, Open Lead Detection Enable/Disable.
4.2.2 Alignment Procedure
Preparation
1. This procedure shall be performed within environmental conditions of 23 ±1 °C
and 5% to 95% RH.
2. The unit under test (“UUT”) shall be acclimated to the controlled environment for a
minimum of four (4) hours.
3. The equipment listed in Appendix A is required to align the UUT to the expanded
instrument uncertainties specified in Appendix B.
4. Remove the UUT battery door housing to expose the alignment access hole.