Commissioning, Operation; Mechanical Mounting - WIKA TR12 Serie Manual De Instrucciones

3. Commissioning, operation

3. Commissioning, operation
DANGER!
Danger to life from explosion
Through working in flammable atmospheres, there is a risk of explosion
which can cause death.
▶
Only carry out set-up work in non-hazardous environments!
▶
Do not open the instrument while under voltage.
DANGER!
Danger to life from explosion
By using a measuring insert without a suitable connection head (case), an
explosion risk occurs which can cause fatalities.
▶ Only use the measuring insert in the connection head designed for it.
DANGER!
Danger to life due to loss of explosion protection
If the allowable thread gaps and the corresponding tightening torques are not
observed, this can lead to a loss of the explosion protection.
▶
Ensure the number of engaged threads in accordance with chapter
3.9 and the tightening torques in accordance with chapter 2.5
(OI_14064370_TR12_TC12).
Observe the special conditions (see chapter 4 "Special conditions for use (X conditions)").

3.1 Mechanical mounting

With pre-assembled connection heads, the direct threaded connection of the thermometer
to the connection head or case must not be twisted or opened. Any alignment of the case
may only be made using the optional "nipple-union-nipple" neck tube.
Certified and listed field cases (variant 3) should only be fitted and installed by a specialist
trained to the latest technological standards.
Removal and installation of the measuring insert
Before opening the instrument, isolate it from any voltage and loosen the locking screw of
the cover (see chapter 5.2). During the replacement of the measuring insert, the surfaces
of the flameproof joint must not be damaged. Scratches, grooves, dents, bumps etc. are
not permissible. The joint lengths and the joint widths of the flameproof joint must not be
changed.
For a detailed description of mounting and dismounting, see chapter 5.1
(OI_14064370_TR12_TC12).
WIKA additional information TR12/TC12, flameproof enclosure (Ex d)
EN
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