Notices for the safe use of sensors in potentially explosive areas
The valid range encompasses devices of Group II, Category 3, Zones 2 ("Gas Ex") and 22 ("Dust Ex").
Check whether the equipment classification corresponds to the requirements of the application.
A safe operation is only possible if the equipment is used properly and for its intended purpose.
Electrical equipment may endanger humans and (where applicable) animal health, and may threaten the safety of goods if used
incorrectly or under unfavorable conditions in potentially explosive areas.
The applicable national regulations (e.g. EN 60079-14) for the configuration and installation of explosion-proof systems must
be observed.
Installation and Commissioning
The devices must only be installed and commissioned by trained electricians. They must be aware of the regulations and
operation of explosion-proof equipment.
Static charge on plastic surfaces must be avoided.
To prevent unintentional separation under voltage, devices with connector (e.g. Series 46B) must be equipped with a safe-
guard or a mechanical interlocking guard (e.g. K-V M12-Ex, part no. 50109217). The warning sign "Do not disconnect under
voltage" that is supplied with the device must be attached to the sensor or its mounting bracket so that it is clearly visible.
Devices with terminal compartment lid (e.g. Series 96) must only be commissioned if the terminal compartment lid of the device
is properly sealed.
Connection cables and connectors must be protected from excessive or unintended pulling or pushing strain.
Prevent dust deposits from forming on the devices.
Metallic parts (e.g. housing, mounting devices) are to be integrated into the potential equalization to prevent electrostatic
charge.
Maintenance
No changes may be made to explosion-proof devices.
Repairs may only be performed by persons trained for such work or by the manufacturer.
Defective devices must be replaced immediately.
Cyclical maintenance is generally not necessary.
Depending on the environmental conditions, it may occasionally be necessary to clean the optical surfaces of the sensors.
This cleaning must only be performed by persons trained for this task. We recommend using a soft, damp cloth. Cleaning
agents that contain solvents must not be used.
PRK 55 ExRetro-reflective photoelectric sensors with polarization filter for bottles
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