Toxalert Tox540-28-IT - Manual

TOXALERT INTERNATIONAL, INC. P.O. BOX 159, MOUND, MINNESOTA 55364 * (952) 472-4541 * FAX (952) 472-4960
Visit our website at www.toxalert.com
TOXALERT
TM
Proven Performance
Proven Technology
Proven Support
Information Technology (IT) at the component level! An
infrared (IR) Combustible Gas Sensor Module with
the brilliance to provide, 4-20 mA or Modbus output. This
can be a stand alone module with the intelligence to
provide integral alarms, already loaded with features you
need. A gas detector with a Toxalert pedigree. The
TOX540-28-IT provides all the built-in features desired by
instrumentation and safety professionals, including:

Aluminum or 316 Stainless Steel enclosure

Optional Integral 8 AMP alarm relays – Alarm,
Warning

Integral scrolling LED display

4-20mA output

Modbus RTU RS-485 interface

Option for non-Methane gas configuration

Annual calibration frequency

Remote alarm reset

Optional remote sensor
The TOX540-28-IT can be used as a 4-20 mA
component or as a Modbus RTU node. For higher
level system capability the module can interface
directly to a Toxalert Controller. As part of a Toxalert
system the user gains capability of system integrity,
extensive diagnostic features, area and zone alarm
management.
How It Works
Most combustible gases absorb infrared light energy at
defined wavelengths, providing an absorption signature
for that gas. The principle of an infrared detector is based
upon the absorption of the infrared light at a specific wave-
length as it passes through the gas. The more of the ab-
sorbing gas that is present, the more light is absorbed.
The detector measures the energy from an infrared light
beam at a wavelength that is absorbed by the gas and
compares it to the energy emitted by the source. The dif-
ference in energy received by the detector indicates the
level of gas in the atmosphere.
Features

Non-intrusive calibration, menu driven
system

4-20mA, relay interface and Network
compatible with Modbus

Local scrolling display
Benefits
Able to easily and quickly calibrate module without
declassifying the area
East to install in a variety of field applications plus easy
to obtain critical safety information wherever needed
For safe and reliable operation in hazardous areas
Meets long term reliability design standards
Ease of calibration and easy access to gas
concentration, relay status and diagnostics
IT Combustible Infrared
Sensor Module
Model TOX540-28-IT
Model
5600-25-IT