Each sensor using a Current Loop input requires a Sensor Mapping. This allows the Samsara cloud to correctly scale the 4mA to 20mA input current to the correct sensor reading.
Simply click the settings wheel on the Sensor's details page and enter the Minimum and Maximum values, and the appropriate units. The first field is the name of the mapped value, to be displayed on the Current Loop page graph of the mapping.
These values are found on the data sheet for the sensor or transmitter being used. If in doubt contact the manufacturer of the sensor or transmitter.
Note that current loops mandate a linear relationship between the sensor value and current output. No adjustment curve can be applied to the sensor values displayed.