WIKA TR21-C - Manual (Page 5)

14006814.01 05/2011 GB/D/F/E
WIKA operating instructions model TR21 5
GB
Information
… points out useful tips, recommendations and information for efficient and
trouble-free operation.
WARNING!
... indicates a potentially dangerous situation that can result in burns, caused
by hot surfaces or liquids, if not avoided.
Abbreviations
RTD "Resistance temperature detector"
TC "Thermocouple"
2. Safety
WARNING!
Before installation, commissioning and operation, ensure that the appropriate
miniature resistance thermometer has been selected in terms of measuring
range, design, specific measuring conditions and appropriate wetted parts'
materials (corrosion).
Non-observance can result in serious injury and/or damage to the equipment.
Further important safety instructions can be found in the individual chapters of
these operating instructions.
2.1 Intended use
The TR21 series of resistance thermometers has been developed specifically for the
measurement of temperatures in the range of -50 … +250 °C in vessels or pipelines within
sanitary applications. Here, the thermowell is used to protect the temperature sensor from
the process conditions. Furthermore, the detachable connection from the thermowell in the
TR21-A and TR21-B variants enables the removal of the temperature sensor without having
to shut down the process; and thus guards against any damage to the environment or to
personnel which might be caused by escaping process media.
The instrument has been designed and built solely for the intended use described here, and
may only be used accordingly.
The technical specifications contained in these operating instructions must be observed.
Improper handling or operation of the instrument outside of its technical specifications
requires the instrument to be taken out of service immediately and inspected by an
authorised WIKA service engineer.
1. General information / 2. Safety