Endress+Hauser IO-Link Ceraphant PTC31B Operating Instructions Manual page 37

Ceraphant PTC31B, PTP31B, PTP33B IO-Link
Endress+Hauser
9.3.2 Calibration with reference pressure (wet calibration =
calibration with medium)
Example:
In this example, a device with a 400 mbar (6 psi) sensor is configured for the measuring
range 0 to 300 mbar (0 to 4.4 psi).
The following values should be assigned:
• 0 mbar = 4 mA value
• 300 mbar (4.4 psi) = 20 mA value
Prerequisite:
The pressure values 0 mbar and 300 mbar (4.4 psi) can be specified. The device is already
mounted, for example.
Due to the orientation of the device, there may be pressure shifts in the measured
value, i.e. the measured value is not zero in a pressureless condition. For information
on how to perform position adjustment, see the "Performing position adjustment"
section →  38.
For a description of the parameters mentioned and possible error messages, see the
"Description of device parameters" section →  56 and →  44.
Performing the configuration
1. Select a pressure unit, here "bar" for example, via the Unit changeover (UNI)
parameter.
2. The pressure for the LRV (4 mA value) is present at the device, here 0 bar (0 psi) for
example. Select Pressure applied for 4mA (GTL) parameter. The selection is
confirmed by pressing "Get Lower Limit".
 The pressure value present is assigned to the lower current value (4 mA).
3. The pressure for the URV (20 mA value) is present at the device, here
300 mbar (4.4 psi)for example. Select Pressure applied for 20mA (GTU) parameter.
The selection is confirmed by pressing "Get Lower Limit".
 The pressure value present is assigned to the upper current value (20 mA).
The measuring range is configured for 0 to 300 mbar (0 to 4.4 psi).
Commissioning
37