Special Conditions For Use - WIKA CPG1500 Betriebsanleitung

3. Safety
Check whether the classification is suitable for the application. Observe the relevant
national regulations.
ATEX
EN
IECEx
II 1G Ex ia IIC T4 Ga
II 1/2G Ex ia IIC T4 Ga/Gb
II 2G Ex ia IIC T4 Gb
Ex ia IIC T4 Gc
For applications requiring instruments of equipment group II (potentially explosive gas
atmospheres), the following temperature classes and ambient temperature ranges apply:
Marking
ATEX IECEx
II 1G Ex ia IIC T4 Ga
II 1/2G Ex ia IIC T4 Ga/Gb
II 2G Ex ia IIC T4 Gb
Ex ia IIC T4 Gc

3.7.2 Special conditions for use

For use in Category 1 G (EPL Ga) applications:
The case consists of aluminium. The instrument shall be protected against mechanical
■
impact to avoid mechanically generated sparks.
The instrument has to be installed in such a way that process-related electrostatic
■
charges, e.g. caused by media passing by, can be excluded.
For use in Category 1/2 G (EPL Ga/Gb) applications:
The partition wall (membrane of the sensor) separating an area requiring EPL Ga
from a less hazardous area has a wall thickness < 0.2 mm for functional reasons. In
the application it has to be ensured, that an impairment of the partition wall e.g. by
aggressive/corrosive media or mechanical hazards is excluded.
The thread of the process connection and the partition wall (membrane of the sensor)
built into a partition wall of the end use application separating an area requiring EPL Ga
from a less hazardous area are made of stainless steel.
The process connection is a gas-tight standardized thread connection with an IP67 rating
according to EN/IEC 60529 between area requiring EPL Ga and the less hazardous area.
12
Temperature class
T1 ... T4
WIKA operating instructions precision digital pressure gauge CPG1500
Ambient temperature range
-10 ... +50 °C