COSA Xentaur Hygrocontrol Type 86 Ex - Manual (Page 4)

1. General Informations
1.1 Intention of this Manual
This manual describes the proper use of type 86-EX instruments, their
maintenance and limits.
We want to beware any user from errative measurements and give
examples for the usage.
Please be aware that these high precision electronic instruments for
humidity and temperature must have very sensitive sensors and
electronics which need some care.
Try to reduce the external mechanical and thermal stresses to a minimum
to prolong the lifetime of the instruments.
If any malfunction or technical problems occur, please contact the
manufacturer, representative or dealer of the instrument.
For our Humidity- and Temperature-Instruments we grant warranty
according to the "Allgemeinen Lieferbedingungen für Erzeugnisse und
Leistungen der Elektro-Industrie.”
1.2 Before Using / Safe Operation under EX-Conditions
1.2.1 Unpacking and Checking
Every instrument has been examined before dispatch in respect to its
electrical and mechanical functions. After receipt of instrument, please
check its operation. In case of any malfunction or damage, return the
instrument with a detailed description of faults.
Series 86-EX instruments are normally combined by 3 parts, which are
„Transmitter“, „Probe“ and „Connecting Cable“. The Transmitter has to
supply an intrinsic safe power supply for the probe. The probe is sending
sensor signals which are temperature compensated and are transfered
into linearized analog or digital outputs by digital electronics in the
transmitter. We use a microprocessor for the control of all internal
functions. Using the probe under EX-conditions you only should use an
intrinsically safe cable to connect the probe to the transmitter. These blue
4-wire cables are shielded and confirm with EN 90079-14. The intrinsically
safe power supply and signal wires are not connected to earth-potential
but the cable shield, the housing of the probe and the SS-316 tube of the
probe are connected to earth.
1.2.2 Setup for Operation
The instrument is to be connected to main powers either by a connector or
by using the terminals inside the housing. The correct voltage is marked
HYGROCONTROL Manual for Type 86 Ex Page
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