WIKA TR36 Mode D'emploi page 16

5. Commissioning, operation
Alternatively for North America
The connection can be made in line with "Class 2 Circuits" or "Class 2
Power Units" in accordance with CEC (Canadian Electrical Code) or
NEC (National Electrical Code).
EN
Load diagram
The permissible load depends on the loop supply voltage. For
communication with the instrument, with programming unit PU-548, a
max. load of 350 Ω is admissible.
833
583
0
5.3 Behaviour of the 4 ... 20 mA electrical output signal
Sensor break and short-circuit
■
Sensor break or short-circuit are signalled after positive detection
(after approx. 1 second). If this fault condition has been caused by a
malfunction, then a relevant measuring signal must exist for approx.
1 second in order to return to measuring mode. From the time of the
error detection up to the error signalling, the last relevant measured
value will be delivered on the current loop.
Therefore, in the event of a "true" sensor break or short-circuit, this
is also signalled permanently. In the event of a "false" sensor break
or short-circuit, the transmitter has the possibility of reverting to
measuring mode.
Medium temperature outside the span
■
If the medium temperature exceeds that configured within the
transmitter, the transmitter will operate in a linear fashion within the
following limits: 3.8 mA (MRS); 20.5 mA (MRE). If these limits are
exceeded, then an error will be signalled.
16
10
Voltage U in V
B
24 30
WIKA operating instructions model TR36