WIKA TC10-L - Manual (Page 16)

3370964.05 04/2014 GB/D/F/E
16 WIKA operating instructions models TR10-L, TC10-L (Ex d)
GB
7. Information on mounting and operation in hazardous areas
WARNING!
Non-observance of these instructions and their contents may result in the loss of
explosion protection.
The requirements of the 94/9/EC (ATEX) directive must be followed. Additionally
the specifications of the respective national regulations concerning Ex usage
(e.g. EN/IEC 60079-10 and EN/IEC 60079-14) apply.
■ The responsibility for classification of zones lies with the plant operator and not the
manufacturer/supplier of the equipment.
■ The plant operator guarantees, and is solely responsible, that all thermometers in use are
identifiable with respect to all safety-relevant characteristics. Damaged thermometers may
not be used.
■ For the installation of the thermometer, only components (e.g. cables, cable glands, etc.)
permitted for “flameproof” may be used.
■ For earthing the conductive screen, follow the specifications of EN/IEC 60079-14.
■ When using a transmitter/digital display, note and follow:
- The contents of these operating instructions and those of the transmitter/digital display
- The relevant regulations for installation and use of electrical systems
- The regulation and guidelines regarding explosion protection
■ The flameproof thermometers should only be fitted to certified housing- or connection
heads certified with a “flameproof” ignition protection type.
■ For fitting, the permitted flameproof joints for electrical equipment for gas hazardous
areas are contained in EN, IEC 60079-1. Flameproof joints 1) for parallel threads 2) , must
be ≥ 5 mm for housing volumes < 100 cm³ and ≥ 8 mm for housing volumes > 100 cm³.
There must be ≥ 5 threads engaged.
Flameprooof joints 1) for tapered threads 2) , must have ≥ 5 available threads on each part.
There must be ≥ 3.5 threads engaged. These specifications for flameproof joints must be
adhered to, without fail, when fitting and during operation.
■ The direct threaded connection of the thermometer to the connection head or housing
must not be twisted or opened. Any alignment of the housing may only be made using the
optional “nipple-union-nipple” neck tube.
■ The temperature resistance of the connecting cable must match the permissible operating
temperature of the housings.
For ambient temperatures above 60 °C, heat-resistant connecting cable must be used.
■ No batteries may be built in to the flameproof housing.
7. Information on mounting and operation in hazardous areas
1) Section 5.3 of IEC 60079-1
2) In accordance with table 3 of IEC 60079-1