HESCH Industrie-Elektronik GmbH
HE 5409, version 1.4, # 341539
7
2.4
Device identification
The device bears the following label:
II3D
Device category:
Use in zone 22 for dust in standard operation.
Ex
Indicates an electrical operating material standards of series EN 60079-0ff. were
applied.
tc
Ignition protection type:
Protection by housing
IIIC
Explosion group:
Conductive dust
T135 °C
Temperature setting:
Maximum permitted surface temperature
Dc
Device protection level:
Use in zone 22 for dust
IP65
Protection type:
Dust proof and splash-water protected
II3G
Device category/
Ex-atmosphere:
Use in zone 2 for gas in standard operation
Ex
Indicates an electrical operating material.
Standards of series EN 60079-0ff. were applied
nR
Ignition protection type:
Protection by smoke-restricted housing
IIC
Explosion group:
Permitted for gases with an ignition power of <60µJ
(e,g. hydrogen)
T4
Temperature setting:
Maximum permitted surface temperature (135 °C)
Gc
Device protection level:
Use in zone 2 for gas
IP65
Protection type:
Dust proof and splash-water protected
Troubleshooting!
All possibilities of trouble sources at add-on devices respectively supply
lines (measuring lines, wiring, sequential devices) must be considered at
the beginning of the troubleshooting. We recommend to send the device
to the supplier in case the error has not been detected after reviewing
these points.
Decommissioning!
Disconnect the power supply at all poles to decommission the device.
Secure the device against unintended operation!
Prior to the disconnection the impacts must be considered and respective
measures must be taken if the device is connected to other devices and /
or equipments.