Perle Systems SCS Calibrating Temperature Input, Calibrating Analog Channels, Calibrating RTD

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.

Calibrating Analog Channels

Analog Input can be calibrated for Analog and Temperature IOLAN models.

Select the channel you want to calibrate. This example uses an A4 model that has channel A1 set to Current with a Range of 0 to 20mA.

If you have not disabled confirmation messages (Tools, Options in DeviceManager only), you will get prompted to verify channel calibration.

Click Yes to proceed with calibration. You are now prompted to apply 0 mA to the positive (+) and negative (-) terminals. Once that is done, click Yes to proceed.

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