EN
WIKA operating instructions model TR33
14073818.10 05/2021 EN/DE/FR/ES
17
Do not exceed the following values:
■
Version with 4 ... 20 mA output signal
Power supply and current loop circuit (connections)
Voltage
U
i
DC 30 V
Current
I
i
120 mA
Effective internal capacitance
C
i
6.2 nF
Effective internal inductance
L
i
110 µH
Sensor circuit
Power
P
o
37.5 mW
Ambient temperature
-40 ... +85 °C [-40 ... +185 °F]
The maximum self-heating at the probe tip is 4 K
■
Version with Pt100 and Pt1000 output signal
Sensor circuit
Voltage
U
i
DC 30 V
Current
I
i
550 mA
Effective internal capacitance
negligibly small
Effective internal inductance
negligibly small
Ambient temperature
-40 ... +85 °C [-40 ... +185 °F]
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.
5. Commissioning, operation
Summary of Contents for TR33
Page 34: ...EN 14073818 10 05 2021 EN DE FR ES 34 WIKA operating instructions model TR33 ...
Page 66: ...DE 14073818 10 05 2021 EN DE FR ES 66 WIKA Betriebsanleitung Typ TR33 ...
Page 98: ...FR 14090084 10 05 2021 EN DE FR ES 98 WIKA mode d emploi type TR33 ...
Page 130: ...14073818 10 05 2021 EN DE FR ES 130 WIKA operating instructions model TR33 ...
Page 131: ...WIKA operating instructions model TR33 14073818 10 05 2021 EN DE FR ES 131 ...
