Hioki 2300 Smart Site, Instruction Manual, Page: 135 / 366

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7 2306-20 MULTIFUNCTION MODULE
7.5.3 Pre-heating time before the start of recording
For the measured values to meet the desired level of measurement
accuracy, the instrument needs to be pre-heated for 10 minutes
after it is switched on. In the case of temperature measurement
with a thermocouple (reference junction compensation: internal), a
1 hour pre-heating period is necessary. Connect the thermocouple
to the terminal block and the terminal block to the instrument
before pre-heating for 1 hour. Pre-heating that is necessary for the
temperatures of the measurement terminal (reference junction)
and the instrument to become even.
*Alternation of the reference junction compensation between inter-
nal and external is possible
Internal Reference junction is compensated in the instrument. Measurement
accuracy is the added value of temperature measurement accuracy
and reference junction compensation accuracy.
External Junction reference is not compensated in the instrument. External
reference junction compensation device is required. Measurement
accuracy is only the temperature measurement accuracy.
2: Connect the terminal block
1: Connect the
3: Switch on the power
of and wait for 1 hour
thermocouple
to the instrument