COSA Xentaur Hygrocontrol Type 86 Ex - Manual (Page 5)

on the type label you find on one side of the housing. Do not use voltages
other than the marked one! Severe damage would be the result of
applying the wrong voltage.
If your instrument is equipped with screw terminals, the cross section of
your conductors should meet the dimensions of 0.5 up to 1.5 mm
2 (AWG
16 to AWG 20). You will find these terminals on the ground PC-board after
opening the housing by turning the four screws (quick-release types) with
a screwdriver to the left. Please take care that cable diameter corresponds
with cable gland dimension and so will guarantee a dense screwing.
If connectors are used for power supply and outputs, we always ship the
neccessary connectors together with the instrument.
1.2.3 On-Site Preparations to fullfill Ex-Regulations
During operation the housing of the instrument should be closed and
the connections between transmitter and probe may not be opened
as long as the cable is in a hazardous area of dust explosion type.
Make sure that before the power supply is activated, an intrinsically
safe cable is used to connect the probe to the transmitter and that all
plugs are thoroughly tightened to assure safe contacts.
User of the instrument have to take care, that not only the power
supply, but also any instrumentation connected to the transmitter is
protected by a fuse of max. 16A, which has a shut-down current of at
least 1500A. If all other instrumentation connected to the transmitter
is powered by the same line, this allows to use one single fuse for
this protection.
Whatever supply is used for the instrument, the PE-contact of the
transmitter must be connected to PE! This is also true, if low voltage
or DC voltage is applied! The tube of the probe has to be connected
to the local potential of the machinery.
Our probes are secure against pressure and vacuum by a glass
feed-through which is specificated from 30 mbar to 30 bar. Use
compression fittings of SS-316 material if applications may have
pressures of more than 1,5 bar.
1.3 Instructions for Dispatch
If there are any problems you are not able to correct, we ask you to
contact our technical department or to return the instrument with a short
description of the fault. When returning please pack the instrument safely
in a cardboard box and fill up holes with soft packing material to avoid
damage.
HYGROCONTROL Manual for Type 86 Ex Page
4