Temperature head transmitter
6 Commissioning
27
When using earthed thermocouples screening of the output
cable (4 ... 20 mA cable) is recommended.
In plants with strong EMC problems screening of all cables
with a low ohm connection to the transmitter housing is
recommended.
Fig. 6: Screening on remote installation
6
Commissioning
6.1
Installation check
Installation check
Monitor all connections making sure they are tight. In order to guarantee fault free
operation the terminal screws must be tight onto the connection cables. The unit is now
ready for operation.
6.2
Commissioning
Commissioning
Once the power supply has been connected the head transmitter is operational.
6.3
Function check
Function check
Measuring the analogue 4-20 mA output signal or following failure signals:
aaaaaaaa
aaaaaaaa
aaaaaaaa
bbbbbbbb
bbbbbbbb
bbbbbbbb
R-T
A
F
1
0
x
x
x
-04-08-00-en-001.
eps
Measurement range
undercut
linear fall to 3.8 mA
Measurement range
excess
linear rise to 20.5 mA
Sensor break; sensor
short circuit
≥
21.0 mA
