WIKA TC10-L - Manual (Page 19)

WIKA operating instructions models TR10-L, TC10-L (Ex d)
3370964.05 04/2014 GB/D/F/E
19
GB
The permissible ambient temperatures for third-party products can be seen from the relevant
approvals and/or data sheets. However, an impermissible heat reflux from the process which
can exceed the operating temperature of the housing or the temperature class, must be
prevented through suitable heat insulation or a suitably long neck tube.
9. Maintenance and cleaning
9.1 Maintenance
The thermometers described here are maintenance-free.
Repairs must only be carried out by the manufacturer.
9.2 Cleaning
CAUTION!
■ Prior to cleaning the electrical connections, disconnect them properly.
■ Clean the instrument with a moist cloth.
■ Electrical connections must not come into contact with moisture.
■ Wash or clean the dismounted instrument before returning it, in order to
protect persons and the environment from exposure to residual media.
■ Residual media in the dismounted instrument can result in a risk to persons,
the environment and equipment. Take sufficient precautionary measures.
For information on returning the instrument see chapter 11.2 “Return”.
9.3 Calibration, recalibration
It is recommended that the measuring insert is recalibrated at regular intervals (resistance
thermometers: approx. 24 months, thermocouples: approx. 12 months). This period can
reduce, depending on the particular application. The calibration can be carried out by the
manufacturer, as well as on site by qualified technical staff with calibration instruments.
8. Safety-related instructions / 9. Maintenance and cleaning