User Manual

1 65-2649RK-HC-04 M2A Transmitter Operator’s Manual
Chapter 1: Introduction
Overview
This chapter briefly describes the 65-2649RK-HC-04 M2A Transmitter. This chapter also
describes the 65-2649RK-HC-04 M2A Transmitter Operator’s Manual (this document).
Table 1 at the end of this chapter lists the specifications for the M2A.
About the M2A Transmitter
The M2A transmitter is a fixed mount, continuous-monitoring d e tector head. All user
adjustable parameters may be accessed using push button switches. In addition,
calibration may be performed non-intrusively by use of a magnetic wand accessory which
activates magnetic switches through a window at the front face of the detector head.
The M2A displays the current gas reading on an OLED dis p lay which is visible through
the window in the cover (front face) and provides a 4 - 20 m A signal whic h indicates the
target gas reading for use by a gas monitoring controller, recording device, or
program mable cont roller. The M2A also pro vides an RS- 485 Mo dbus output. Thr ee sets of
relay contacts, two controlled by the gas alarms and one by the fail alarm, rated at 115
VAC 5 amps are available for controlling devices such as lights or horns or for controlling
higher rated relays.
Four operating modes allow you to display and change setup and calibration settings and
change the gas type. They are Calibration Mode, Configuration Mode, Gas Type Mode,
and Modbus Mode.
About this Manual
The M2A Transmitter Operator’s Manual uses the following conventions for notes, cautions,
and wa rnings.
NOTE: Describes additional or critical informatio n.
CAUTION: Descr i bes potential d amage to equipment.
WARNING : Describes poten tial danger that can result in injury or death.