WIKA LF-1 Operating Instructions Manual page 12

5. Commissioning, operation
5.4.5 Shortening the cable
The cable can be shortened as required.
With submersible pressure sensors with voltage output, a shortening of the cable results in an offset error:
≤ 0.014 % / m of shortened cable.
EN
After the shortening, provide the wire ends with end splices and position the filter element on the vent tube.
5.4.6 Connecting the instrument to the electric system
▶
Connect the cables to the terminals.
▶
For voltage outputs, the load must be specified so that the output current does not exceed 1 mA.
Load
Current output: ≤ (U
Voltage output: ≤ 1 mA
Additional load of the cable:
≤ cable length in m x 0.084 Ω
Pin assignment
4 ... 20 mA, 4 ... 20 mA + HART
U+
U-
Shield
2 x 4 ... 20 mA (2 x 2-wire, galvanically isolated)
U+ (pressure sensor)
U- (pressure sensor)
U+ (temperature sensor)
U- (temperature sensor)
Shield
12
-(U - 0.5 V)) / 0.023 A
+ +min
(2-wire)
®
brown (BN)
blue (BU)
grey (GY)
brown (BN)
blue (BU)
green (GN)
white (WH)
grey (GY)
WIKA operating instructions submersible pressure sensor, model LF-1