Wiring diagram
The electrical connections are made in accordance with the wiring diagram.
Guiding the cables in the terminal box
The field wiring cables must be cut to a length to be able to properly fit them
into the terminal box.
3.2.8
Cable glands
The screwed cable gland and stopping plug must have the following
specifications:
•
Ingress protection IP67
•
Temperature range from -40 °C to +70 °C
•
Hazardous area certification (depending on where the unit is installed)
•
Pull relief
Ensure the screwed cable gland safely seals the cable and is tight enough to
prevent water ingress. Unused conduit or cable entries must be sealed with a
stopping (blanking) plug.
A strain relief must be provided for the field wiring cables when the device is
installed with the factory-provided cable glands.
Cable glands and conduit system for ATEX or IECEx
The installation must comply with the regulations of the country where the
level switch is installed.
Unused entries have to be closed with suitably rated stopping (blanking)
plugs.
Where available, the factory-provided parts must be used.
The diameter of the field wiring cable must match the clamping range of the
cable clamp.
If factory-provided parts are not used, the following must be ensured:
•
The parts must have an approval adequate to the approval of the level
sensor (certificate and type of protection).
•
The approved temperature range must be between the minimum
ambient temperature of the level sensor and the maximum ambient
temperature of the level sensor increased by 10 K.
•
The parts must be mounted according to the instructions of the
manufacturer.
October 2019
Quick Start Guide
Quick Start Guide
15
