Fluke 1552A EX - Manual (Page 15)

Stik Thermometer
Calibration
7
Record as-found Calibration Parameters
Before any adjustments are made, the present values of the Product calibration
parameters should be recorded. Connect the serial cable between the computer and the
Product. The commands used to read the values of the calibration parameters are given in
Table 3. Commands must be terminated with a carriage return character. Table 3 may
also be used to record the values of the calibration parameters.
Table 3. As-found Calibration Parameters
Parameter Command Value (fill in)
TEMP1 CAL:USER:TEMP1?
ADJ1 CAL:USER:ADJ1?
TEMP2 CAL:USER:TEMP2?
ADJ2 CAL:USER:ADJ2?
TEMP3 CAL:USER:TEMP3?
ADJ3 CAL:USER:ADJ3?
DATE CAL:DEV:DATE?
Evaluate as-found Measurement Errors
The Product should be tested to evaluate its accuracy before any adjustments are made. It
is recommended that it be tested near the five temperatures listed in Table 4, depending
on the model.
Table 4. Test Temperatures
Point 1551A Ex 1552A Ex
1 -50 ° C -80 ° C
2 -25 ° C -25 ° C
3 0 ° C 0 ° C
4 100 ° C 100 ° C
5 157 ° C 300 ° C
At each of the test temperatures, readings are recorded of the temperature of the reference
thermometer and the indication of the Product. Before recording the readings, make sure
the temperatures of the bath, reference thermometer, and 1551A Ex/1552A Ex
Thermometer are settled and stable.