Commissioning, Operation; Mechanical Mounting - WIKA RTD Zusatzinformation

2. Safety / 3. Commissioning, operation
Transmitter model (only for design with transmitter)
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Year of manufacture
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Approval-related data
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Sensor symbol
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EN
ungrounded
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grounded
■
quasi grounded
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3. Commissioning, operation

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.
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DANGER!
Danger to life from missing grounding
With missing or incorrect grounding, there exists a risk of dangerous voltages
(leading to, for example, mechanical damage, electrostatic charge or
induction).
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Observe the special conditions (see chapter 4 "Special conditions of use (X conditions)",
point 2).

3.1 Mechanical mounting

3.1.1 Multipoint assemblies
In this design, several, exchangeable (if required) thermocouples or resistance
thermometers are combined into a complete instrument so that measurements can be
carried out at different immersion depths. Multipoint assemblies are usually equipped with
a case in which transmitters or terminal blocks are mounted.
8
= ungrounded welded
= welded to the sheath (grounded)
= The thermometer is, due to its low insulation clearances between resis-
tance sensor and sheath, to be considered as grounded.
Before mounting and commissioning the instrument, ensure you
read the operating instructions!
Only use measuring insert in the connection head designed for it.
Ground thermometer!
WIKA additional information RTD and TC, intrinsically safe designs (Ex i)