VEGA D81 Hydrostatic pressure transmitter - Manual (Page 26)

26 Pressure transmitter D81
250
Ω
Ri < 250
Ω
+
-
PLC
Setup
4.4 Setup with HART ® handheld
Sensors with electronics versions I, K and L
can be set up with the HART
® handheld. A
special DD (Data Device Description) is not
necessary. Just connect the HART
® handheld
to the sensor signal cable after you have
connected the sensor to supply voltage.
Note:
If the resistance of the voltage supply is less
than 250
Ω
, a resistor must be looped into the
signal/connection cable during adjustment.
The digital adjustment and communication
signals would otherwise be short-circuited
through insufficient resistance of e.g. the
supply voltage source or the processing
system. In such case, communication with
the sensor would not be ensured. Simply
connect the adjustment resistor in parallel to
the connection socket of the HART
®
handheld.