Oldham MX 32, Руководство пользователя

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64 MX 32
v2
User Manual
Specific instructions for the prevention of
explosions according to ATEX 2014/34/EU
European Directive
MX32 controller is compliant to EN 60079-29-1:2016 standard that specifies
the performance requirements of fixed gas detection systems (gas detectors
and controllers).
As such, MX 32 controller is certified as a safety device and can be used in
systems that contribute to reduce the risk of explosion.
The information described below must be taken into account and fulfilled by the
site manager. Refer to ATEX 1999/92/EC European Directive on requirements
for improving the safety and health of workers potentially at risk from explosive
atmospheres.

It is essential to refer to the instructions of use and commissioning of
the gas detectors that are connected to the controller.

Detectors for flammable gases must also comply with EN 60079-29-1
standard.

MX 32 controller is digitally compatible with OLCT 10N, OLCT 80,
OLCT 710, iTrans2, 700 and Meridian gas detectors.

In the event the user connects a non-Oldham brand detector to the MX
32 controller, the user must ensure that the detector is compatible with
the input characteristics of the controller, so that the information
delivered by the detector will be properly interpreted (see transfer curve
on the following page). In addition, the controller must provide sufficient
supply voltage, taking into account voltage drops in the cable.

Highest alarm set point for flammable gases shall not exceed 60% LEL
and shall be of a latching type.

In normal operation mode and without any time delay that the user
could have programmed,
MX 32 response time is less than 2 seconds
regardless of the number of inputs/outputs.

Time delay and relay operation settings (see voir Alarm Thresholds and
Relays, page 15) is the responsibility of the user.

Over-range (flammable gases)
As soon as gas concentration exceeds 100% LEL, MX 32 stores
the over-range condition and displays >100% LEL. The
concerned channel goes into alarm and fault condition and OVS
(OVERSCALE) and FAULT (FAULT) visual indicators are lit.
Alarm reset is manual and under the responsability of the user
who must follow the site-specific safety guidelines. Over-range
condition can only be deactivated by switching off the detector
via the maintenance menu providing the gas concentration is
below the alarm threshold.

MX 32 controller must not be exposed to mechanical vibrations and
must be installed in a non-hazardous area.

With respect to installation in explosive atmospheres, the electrical
installation must comply with the regulation in force, in particular EN
60079-14 and EN 6079-17 standards (current editions) and, if
necessary, additional requirements of domestic or national regulations
that apply to the place of installation.