Fluke 1551A-12 Calibration Guide - Page 15

Stik Thermometer Calibration 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 ADJ1 TEMP2 ADJ2 TEMP3 ADJ3 DATE CAL:USER:TEMP1? CAL:USER:ADJ1? CAL:USER:TEMP2? CAL:USER:ADJ2? CAL:USER:TEMP3? CAL:USER:ADJ3? 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 1 2 3 4 5 -50 °C -25 °C 0 °C 100 °C 157 °C 1551A Ex -80 °C -25 °C 0 °C 100 °C 300 °C 1552A Ex 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. 7