Mounting The Probe - WIKA STW15 Mode D'emploi

5. Commissioning, operation
The instruments do not provide for incorporated overcurrent protectors.
Provide suitable protection systems in order to prevent the contacts from welding
through overload.
EN
3.
Connect the connection cable in accordance with the connection diagram.
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Fully slide the instrument onto the installed mounting bracket.
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Attach and engage the protection cap and tighten the PG gland until sealing is
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achieved (recommended tightening torque: 4 Nm).
4. Connect the measuring line and cable.
5. Mount the probe into the exhaust pipe.

5.2 Mounting the probe

Before mounting the probe, check whether the probe material used (specified in the
delivery note) is chemically resistant/neutral to the medium being measured.
If possible, the entire length of the stem should be exposed to the temperature being
measured.
A thermowell must not be used because of its influence on the response time.
Errors in thermal conduction occur if the area where the temperature is to be measured is
so small, that the mass of the temperature probe acts as thermal capacity. Errors in thermal
conduction may also occur if the immersion depth is insufficient, if the mounting fittings are
connected to a good thermal conductor (metal plate or similar) and there is a considerable
difference in temperature between the measuring and mounting element temperatures.
14 WIKA operating instructions model STW15