Manual

5
1
2
+
( )
(-)
6 7 8
4...20mA
2
3
4
1
Fig. 23: Electronics and connection compartment, single chamber housing
1 Voltage supply, signal output
2 For indicating and adjustment module or interface adapter
3 For external indicating and adjustment unit
4 Ground terminal for connection of the cable screen
5.4 Switch-on phase
After connecting the instrument to power supply or after a voltage
recurrence, the instrument carries out a self-check for approx. 30 s:
l Internal check of the electronics
l Indication of the instrument type, hardware and software version,
measurement loop name on the display or PC
l Indication of the status message "F 105 Determine measured
value" on the display or PC
l The output signal jumps to the set error current
As soon as a plausible measured value is found, the corresponding
current is outputted to the signal cable. The value corresponds to the
actual level as well as the settings already carried out, e .g. factory
setting.
Electro
nics compart-
ment
28 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
5 Connecting to power supply
41783-EN-120316