Deltabar FMD71, FMD72 Commissioning
Endress+Hauser 63
9.12.2 Calibration with reference pressure (wet calibration)
Example:
In this example, a device with a 400 mbar (6 psi) sensor module is configured for the 0 to
+300 mbar (4.4 psi) measuring range, i.e. the 4 mA value and the 20 mA value are
assigned 0 mbar and 300 mbar (4.4 psi) respectively.
Prerequisite:
The pressure values 0 mbar and 300 mbar (4.4 psi) can be specified. The device is already
mounted, for example.
For a description of the parameters mentioned, → 78"Description of parameters".
Description
1 Perform position adjustment → 81.
A0017671
A See table, step 4.
B See Table, Step 5.
i Current value
p Pressure
2 Select the "Pressure" measuring mode via the
"Measuring mode (005)" parameter.
Menu path: Setup → Measuring mode
3 Select a pressure engineering unit via the
"Press Eng. Unit (125)" parameter, here "mbar"
for example.
Menu path: Setup → Press. eng. unit
4 The pressure for the LRV (4 mA value) is
present at the device, here 0 mbar (0 psi) for
example.
Select the "Get LRV (015)" parameter.
Menu path: Setup → Extended setup → Current
output → Get LRV.
Confirm the value present by selecting "Apply".
The pressure value present is assigned to the
lower current value (4 mA).
5 The pressure for the URV (20 mA value) is
present at the device, here 300 mbar (4.4 psi)
for example.
Select the "Get URV (016)" parameter.
Menu path: Setup → Extended setup → Current
output → Get URV.
Confirm the value present by selecting "Apply".
The pressure value present is assigned to the
upper current value (20 mA).
6 Result:
The measuring range is configured for 0 to
+300 mbar (4.5 psi).
9.13 Backing up or duplicating the device data
The following options are available to you with an operating tool that is based on FDT
technology (e.g. FieldCare):
• Storage/recovery of configuration data.
• Duplication of device parameters.
• Transfer of all relevant parameters when replacing electronic inserts.
Use the following parameter for this:
Download select. (visible only in FieldCare)