Kobold NRM, Operating Manual

Page: 10 / 52

NRM
page 10 NRM K06/0422
WATER / VAPOUR
To achieve suitable ingress protection Kobold
recommends using the suggested cable outer
diameter and fasten properly the cable gland.
Kobold also recommends leading the connecting
cables downwards to lead aside the rain water and the
condensed water. This is needed in case of outside
installations and some special applications where
there is very high humidity or the possibility of water
condensation is quite high (for example in cleaning,
purification processes, in cooled and / or heated
tanks).
7.1 Wiring of the devices
Using HART communication Using Ex approved instrument
In non-Ex environment in hazardous environment
In case of integrated version:
Prior to wiring ensure that the power supply is turned off at the source.
(For wiring the unit 6 x 0.5 mm
2
cross section or greater cable is recommended).
The necessary programming can be made after energizing the unit.
Colour codes of the wires:
Green – (+) Positive point of current loop measurement
Yellow – (-) Negative point of current loop measurement
White – I (-) Negative point of current loop, power supply and HART
Brown – I (+) Positive point of current loop, power supply and HART
Green/Yellow – GND Grounding and shielding point