Time Electronics User Manual
5051 Plus and 7051 Plus Multifunction Calibrators v2.1
xx51+ Multifunction Calibrators Page 22 of 64
7.2.6. Monitoring the Internal Temperature
To operate within specification, the xx51 must be located in a stable environment at 22ºC +/- 3degC.
It is also important that the internal temperature has stabilised. This is constantly displayed on the
screen below the numeric keypad:
In addition to the temperature, the rate of change in temperature is shown in ºC/min (averaged over
the last ten minutes). Accurate calibrations should not be attempted if the rate of change displayed is
greater than 0.02ºC/min.
Note, the rate of change in temperature is only shown after the xx51 control program has been
running for more than ten minutes.
Exiting the DCV screen
Press the Menu button to return to the main FUNCTION selection screen. Note, the output will
automatically be zeroed when Menu is pressed.
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