11
Chapter 1 |
Overview
Overview of the
Gas Monitor
The
fixed gas monitor is an
independent monitor capable of
displaying
one
or
two
gas
concentrations as well as sensor or
instrument specific diagnostics.
The
comes standard with
independent 4-20 mA outputs for
each channel, making it ideal for
interfacing to control units. A digital
ModBus RTU interface is also
available, allowing the
to
interface to digital control systems.
The
is available with an
optional relay board, allowing the
unit to directly control external
devices such as fans, pumps, alarm
horns, or warning lights. Two of the
relays can be programmed for alarm
activation, while the third relay is a
fault protection relay. Calibration,
changing span gas concentration,
and checking the instrument’s
configuration
are
easily
accomplished
using
the
non-
intrusive magnetic wand.
The
is powered with a 24
VDC (12-28 VDC) power supply and
provides a 4-20 mA control signal
for each sensor.
Figure 1-1 Typical
Gas Monitor
with Single Gas Sensor (Stainless Steel
Option)
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Страница 22: ...22 Figure 3 1 Mounting the Gas Monitor on a Wall Figure 3 2 Mounting the Gas Monitor on a Column Using U Bolts...
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