Special Conditions For Safe Use In Explosive Atmosphere (For Ignition Protection Ex I) - WIKA IS-3 Betriebsanleitung

6. Commissioning, operation
Additional notes on installation in and mounting to zone 0 and zone 20
WARNING!
Danger to life through improper mounting
EN
If the pressure transmitter is not mounted properly, there is the risk of a carry-through between zones.
For areas that require EPL Ga, the pressure transmitter or the cable gland must be mounted into the
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barrier between areas in such a way that IP 67 ingress protection in accordance with IEC 60529 is
ensured.
For areas that require EPL Da, the pressure transmitter or the cable gland must be mounted into the
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barrier between areas in such a way that IP 6X in accordance with IEC 60529 is ensured.
When using the pressure transmitter in areas that require EPL Ga or Da, the shield of the connecting
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cable and the metallic part of the strain relief clamp must be included within the equipotential bonding
of the enclosure.

6.1.1 Special conditions for safe use in explosive atmosphere (for ignition protection Ex i)

When used in areas which require category 1G equipment, the pressure transmitter has to be wall-mounted in such
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a way that degrees of IP 67 are ensured in compliance with EN 60529.
When used in areas which require category 1D equipment, the pressure transmitter has to be wall-mounted in such
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a way that degree of IP 6X is ensured in compliance with EN 60529.
The technical information provided by the manufacturer regarding the avoidance of mechanical hazards as well as
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the use of the pressure transmitter in conjunction with aggressive or corrosive media has to be adhered to.
When using the pressure transmitters in areas which require category 1 equipment, the screen of the connecting
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cable needs to be integrated into the equipotential bonding of the equipment.
When used in areas which require category 1G equipment, the cable gland has to be designed in such a way that
■
degrees of IP 67 are ensured in compliance with EN 60529.
When used in areas which require category 1D equipment, the cable gland has to be designed in such a way that
■
degree of IP 6X is ensured in compliance with EN 60529.
The measuring of process media with temperatures exceeding the values of the measuring media temperature
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ranges stated in Table "Ambient and medium temperatures of the respective electrical connections for safe
operation, for medium temperatures ≤ 105 °C (for ignition protection Ex i)" is only permitted if special cooling
necks are used. However, the permitted surface temperature values, which apply to this range due to the defined
temperature classes, shall not be exceeded.
34 WIKA operating instructions pressure transmitter, model IS-3