If you have connected an external
pressure or temperature sensor to the 4–20 mA Ex ia analog input channel of MGP260 (see Wiring), you can use the measurement received from the sensor as the environmental
compensation.
You can
receive the compensation value from an external sensor for only one parameter (temperature
or pressure) at a time.
To use an external sensor for
temperature or pressure compensation:
Select > Configure Device.
Open the Measurement menu.
Select External from either the Pressure compensation mode or the Temperature compensation mode dropdown list, and then select Save.
The external pressure instrument connected to MGP260 must output 4–20 mA and use
absolute pressure units. The default range for the input is 1 … 1.6 bar(a). Note that
the pressure unit used in Insight is hPa. The default input scale for the external
pressure instrument is 0 … 1.6 bar(a), which corresponds to 0 … 1600 hPa.