EN
WIKA operating instructions model TR57-M
14222243.02 08/2022 EN/DE
13
5. Commissioning, operation
Maximum permissible temperatures:
■
At the case with transmitter: 60 °C [140 °F]
■
At the case without transmitter: max. 85 °C [185 °F]
■
Process temperature
Without transmitter: -20 ... +150 °C [-4 ... +302 °F]
With transmitter:
-20 ... +100 °C [-4 ... +212 °F]
short time 150 °C [302 °F] < 30 min
Special version with transmitter:
-20 ... +150 °C [-4 ... +302 °F]
5.1 Mounting
The model TR57-M pipe surface resistance thermometer consists of
a temperature probe (measuring insert) and a clamping fixture (pipe
adapter). The pipe adapter is available in four sizes and is adapted to the
process-side pipe diameter (DN 10 ... DN 80) via a temperature-resistant
silicon lining.
The pipe diameter should only deviate from the nominal diameter of the
silicon lining by a maximum of ±1 %.
Before mounting the adapter, clean the pipe from the outside. There must
be no chips or the like between the probe and the pipe, since, otherwise,
the contact surface of the probe will not lie flat and thus the accuracy will
be reduced.
When using thermal compound, make sure that it remains permanently
paste-like and does not become cured.
Mount at least 15 cm away from any pipe elbows, pipe reductions
and radial weld seams. With axially welded pipes, the probe must not
be placed on the weld seam. Also, maintain a minimum clearance of
15 cm from other fitted sensors in contact with the media. Fit the rear
pipe bracket of the probe case facing outwards in order to eliminate a
measuring error through the the flow characteristics or through bubble
formation. With pipes that are not filled completely, mount the probe in
the area wetted by liquid.
5. Commissioning, operation
