Special Hazards - WIKA GCS-1 Mode D'emploi

3. Safety
Actions or alterations to the gas cylinder scale, which are not described in these
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operating instructions, are not permitted.
If faults cannot be eliminated, the gas cylinder scale must be taken out of operation
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EN
immediately and prevented from being accidentally put back into service.
Always operate the gas cylinder scale within its overload limits.
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Observe the operating parameters in accordance with chapter 10 "Specifications".
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Ground the cable shield at one end, preferably in the safe non-Ex area
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(EN 60079-14). For instruments with cable outlet, the shield is connected to the
case. An additional connection of the shield is only permitted if any potential losses
between the shield connection (e.g. at the supply unit) and the case can be avoided
(see EN 60079-14).
Connect the gas cylinder scale with marking "Ex nA IIC T4/T5" to a power and signal
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circuit with transient protection in accordance with EN 60079-15, chapter 23 C.
Disconnect the gas cylinder scale with the marking Ex nA, or when it is operated
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under nA conditions, only after the power has been turned off.
Fine-stranded leads with bare ends must be finished with end splices (cable preparation)
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Provide equipotential bonding between the ground at the voltage supply and the gas
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cylinder and/or the installation, in case they are connected conductively.

3.6 Special hazards

8
WARNING!
Observe the information given in the applicable type examination
certificate and the relevant country-specific regulations for installation and
use in hazardous areas (e.g. IEC 60079-14, NEC, CEC). Non-observance
can result in serious injury and/or damage to property.
For additional important safety instructions for instruments per ATEX,
→ see chapter 3.5 "Additional safety instructions for gas cylinder scale per
ATEX"
WARNING!
Physical injuries and damage to property and the environment
caused by hazardous media
Improper handling with hazardous media, such as, for example, oxygen,
acetylene, flammable or toxic substances, as well as in refrigeration
systems, compressors etc., can cause dangerous or harmful media to
escape into the environment, which can lead to damage or injury.
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Observe general rules and relevant regulations.
WIKA operating instructions, gas cylinder scale, model GCS-1