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Calibrating I/O
Calibrating Temperature Input
To calibrate an Analog (Temperature) input channel, read the section that applies to the type of input
you are calibrating. Note that calibration will be done for the active channel configuration; for
example, if Channel A1 is set to thermocouple, you cannot calibrate it for RTD. During the
calibration process, you will be asked to apply the minimum and maximum range value to the
channel in either mV or Ohms; for example, to calibrate for thermocouple J 0 to 760C, you will be
prompted to first apply -80mV and then +80mV to the channel.
Also, you cannot actively calibrate disabled channels (although if you enable the channel and then set
it for the type of thermocouple or RTD that has already been calibrated on another channel, it will
also be calibrated).
Calibrating Thermocouple
When calibrating the IOLAN Analog input for thermocouple, you will need a calibration meter that is
better than .15% accuracy. When you calibrate one channel, all thermocouple channels are
automatically calibrated for that range; if another channel is set for a different range, you will need to
calibrate that channel separately, but all channels that use that range are automatically calibrated.
Calibrating RTD
When calibrating the IOLAN Analog input for RTD, you will need a resistor that is better than .05%
Ohms accuracy. When you calibrate one channel, all RTD channels are automatically calibrated for
that range; if another channel is set for a different range, you will need to calibrate that channel
separately, but all channels that use that range are automatically calibrated.