AccuMac AM8060 - Manual (Page 18)

AM8060 Precision Thermometer
User’s Guide
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5 Instrument Calibration And Accuracy
Adjustments
AM8060 is designed for temperature measurement by measuring
the probe resistance and converting it into a temperature.
Consequently, the resistance measurement is very critical, and the
instrument must be calibrated correctly. Every AM8060 is
calibrated before shipment.
AM8060 needs regular calibration performed by qualified
professionals. One year calibration interval is recommended.
Users can calibrate AM8060 using standard resistors with
calibrated values.
Warning: It is required to set correct R0 (Rtpw) values in Sensor 1
(S1) before calibrations. To calibrate AM8060 in the range from
10 Ω to 50 Ω, R0 (Rtpw) needs to be set to 25 Ω. To calibrate
AM8060 in the range from 50 Ω to 375 Ω R0 (Rtpw) needs to be
set to 100 Ω.
In case of AM8060 out of tolerance, its accuracy can be adjusted.
Only qualified agencies, labs or institutes (who must be equipped
with calibrated 25 Ω and 100 Ω standard resistors) should adjust
the accuracy of AM8060.
The calibration should be done in an environment with room
temperature of 22±2°C.
Instrument calibration procedure: (No special sequence
for 100
Ω
and 25
Ω
calibration)