EN
14096788.08 02/2022 EN/DE/FR/ES
18
WIKA operating instructions models TR31-3, TR31-K
5.3
Behaviour of the electrical output signal 4 ... 20 mA
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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 measurement signal must exist for
approx. 1 second in order to return to measuring mode. From the time
of the error detection up to the fault signal, 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.
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Medium temperature outside the span
If the media temperature configured in the transmitter exceeds, an
error will be signalled.
6.
Configuration
Configuration is carried out via a USB interface with a PC via the
model PU-548 programming unit (accessories, order no. 14231581). The
connection with the thermometer is made via the appropriate adapter
cable.
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Accessories, M12 x 1 circular connector: order number 14003193
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Accessories, crocodile clips for bare-end connecting wires:
order number 14097967
5. Commissioning, operation / 6. Configuration