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MLT 2 / BINOS
100 F
Emerson Process Management Manufacturing GmbH & Co. OHG2 - 18
ATEX Instruction Manual
HAS8xE-IM-ATEX
January 2004
2-7-4 Differential Pressure Switch(es)
The contact of the differential pressure
switch is connected to terminals X30
installed inside the analyzer.
The contact opens if the differential pressure
decreases below 50 Pa.
To use this alarm contact the user must
connect his external monitoring system to
these terminals.
Refer to the schematics in appendix to see
how to connect the switch.
2-7-4 Differential Pressure Switch(es)
The contacts must be
connected to signal circuitry
(amplifier, relay) providing
output signals according
NAMUR resp. EN 50227 only.
The standard specifies all
essential data and operating
conditions.
Consult factory for
applicable circuitry which is
available from various
manufacturers.
The purpose(s) for which the differential pressure switch is used (i.e. to activate
disconnection of power or to sound an alarm or otherwise maintain the safety
of the installation) is the responsibility of the user!
It is the responsibility of the user to
connect other circuitry than
specified for scanning the differen-
tial pressure switch.
Take into account the risk of igniting
flammable gas by sparking
contacts!