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2. Design and function / 3. Safety
14150915.07 11/2020 EN/DE/FR/ES
WIKA operating instructions, models TRxx and TCxx 5
Measuring point ungrounded
The model TRxx or model TCxx thermometers consist of a welded tube, a mineral-
insulated sheathed cable or ceramic-insulated thermocouple wires in which the
temperature sensor is located. This is embedded in a ceramic powder, a temperature-
resistant sealing compound, cement compound or a heat transfer paste.
Thermocouples, non-insulated (grounded)
For special applications, for example surface temperature measurements, the sensors are
in direct contact with the protective sleeve, or the measuring points of thermocouples are
welded to the bottom.
Electrical connection
In terms of connection, the thermometer has a case and a plug or bare wire ends. The case
design will contain the connection terminals or certified transmitters. Optionally, separately
certified digital displays can be built into the cases.
2.2 Scope of delivery
Cross-check scope of delivery with delivery note.
3. Safety
3.1 Explanation of symbols
WARNING!
... indicates a potentially dangerous situation that can result in serious injury
or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can result in light injuries or
damage to equipment or the environment, if not avoided.
Insulated measuring point (ungrounded) Non-insulated measuring point (grounded)
Thermocouple ThermocoupleMeasuring point
Measuring point
Sheath
Sheath
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