Supakorn Surakulananta

Juli. 25, 2018
To whom it may concern,

I have a Vaisala 2 items, HMT120/130, M170. It's time to calibrate this instrument. I'm not Metrologist and not expert in a calibration. I'm a beginner in this.

Please let me know how to set the maximum permissible error (MPE) of an instrument. I'm not sure it may be called "Tolerance of an instrument".