Environmental Express AutoBlock Plus - Manual (Page 12)

AutoBlock Plus Operation Manual and Instructions
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3.2 Temperature Calibration Tab
3.2.1 The graphite block temperature should be calibrated on an annual basis and always
performed when installing the AutoBlock for the first time.
3.2.2 In the Temp Cal screen, press the “ENABLE HEAT” button to heat the graphite block to 90°C.
3.2.3 Once the block has reached 90°C, allow it to stabilize for 15 minutes.
3.2.4 Read the temperature inside an empty well with an IR Thermometer traceable to NIST.
3.2.5 Enter the actual temperature value in the field and click the “Graphite Save Cal” button to
save the updated value.
3.2.6 To calibrate the Sample Probe temperature, fill a digestion tube (SC475 or equivalent) with
deionized water and place into the graphite block.
3.2.7 Once the heating block temperature has stabilized, place the Sample Probe thermocouple
into the vial along with an NIST traceable thermometer and allow the water temperature to
stabilize.
3.2.8 Record the actual temperature in the field and click the “PROBE SAVE CAL” button.