How much Deviation is Acceptable when Calibrating a Hygrometer?

D

don_alfre

I Have a question. When perform a verification of thermohygrometer, How much is the deviation range aceptable???

Thanks a lot.
 
BradM

BradM

Leader
Admin
Hello, Don!:bigwave: Thank you for dropping by the Cove!:agree1: I went ahead and made a new thread for you, where you can get personal responses for your question, if that's ok. :)
 
BradM

BradM

Leader
Admin
Don, are you asking what is an acceptable calibration tolerance for your device?

If so, the mfg. tolerance is usually a pretty good start.:agree1:
 
G

George Weiss

A wild guess would be +/-1-to-3deg.F/C. and +/-3-to-5%RH
.
SO what model/manufacturer of instrument are you reffering to?
.
You have expressed that you are calibrating/verifying a thermo-hygrometer.
You will need:
  1. An acceptable procedure to test this item. The manufacturer’s procedure is recommended.
  2. [Like Brad said],The manufacturer’s specifications of this item. These are found in DUT spec-sheet or DUT mftr’s manual
  3. Define/declare a specifications if manufacturer’s specifications are not available
  4. Have acceptable standards to test the specifications
  5. A place to test this item.
If you are testing to MIL STD 45662A, Z540.3, or ISO 17025 then much more is needed.
 
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