Electrical Mounting - WIKA TC8 Serie Betriebsanleitung

3. Commissioning, operation
3.3 Locking screw

3.4 Electrical mounting

For the installation of the thermometer, only components (e.g. cables, cable glands,
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etc.) permitted for "flameproof enclosure" may be used.
Using a transmitter/digital display (option):
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- Observe the contents of these operating instructions and those of the transmitter/
digital display (see scope of delivery).
- Observe the relevant regulations for installation and use of electrical systems, and also
the regulations and guidelines for explosion protection.
The temperature resistance of the connecting cables, the connection heads, the
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cable entries and if necessary the blanking connectors shall be at least as high as the
maximum permissible ambient temperature and shall be at least as low as the minimum
permissible ambient temperature.
Do not fit any batteries or capacitors into the flameproof case.
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Mounting within metallic enclosures:
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The case must be grounded against electromagnetic fields and electrostatic charge.
It must not be connected separately to the equipotential bonding system. It is sufficient
if the process connection has a solid and secured contact with the metal vessel or its
structural components or pipelines, so long as these components are connected to the
equipotential bonding system.
Mounting within non-metal vessels:
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All electrically conductive thermometer components within the hazardous area must be
provided with equipotential bonding.
WIKA additional information TC82, TC83, flameproof enclosure (Ex d)
Always tighten the locking screw to prevent unintended opening
of the head with flameproof enclosure.
Before opening the head, always loosen the locking screw
sufficiently.
EN
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