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Section 4 Installation
Explosion hazard. Trained personnel only must install or commission the equipment.
This chapter includes only the installation information for hazardous location use. For the installation,
operation, and replacement part and accessory information for non-hazardous location use, refer to
the CAx440EX Field Transmitter User Instructions.
4.1 Precautions for hazardous location installations
Obey all North American Classification Certificate specifications and the national and local
regulations. Obey the safety warnings of the other intrinsically safe (Ex) equipment installed near the
field transmitter.
Explosion hazard. Installation into hazardous locations must be done so that no friction can be
generated between the sensor or field transmitter and any surrounding surfaces.
Explosion hazard. To ensure safety, the installation of instruments in hazardous locations must follow
the specifications in the control drawings. Any modification to the instrumentation or to the installation
may result in life threatening injury and/or damage to facilities.
The field transmitter is a power supply and a cellular communication device. The field transmitter
supplies power to the GS2440EX sensor and transmits data from the GS2440EX sensor to the Hach
H
S Data cloud server.
2
The field transmitter is made for use in explosion hazardous areas and can be installed in the "safe
area" as an "associated apparatus" or as non-incendive electrical equipment in Division 2 areas with
intrinsically safe outputs to Division 1 (Zone 0) equipment (e.g., GS2440EX sensor). The field
transmitter can be battery-powered, or used with external DC and SCADA, when installed in
hazardous locations (Division 2).
The CAx440EX field transmitter (LXV449.97.01010) is listed as "non-incendive" safe for Class I,
Division 2 hazardous area for the gas group, protection method, equipment protection level and
temperature class, and the port parameters in
CAx440EX field transmitter is listed as "non-incendive" safe for Class I, Zone 2 hazardous areas.
The basic concept of protection utilized means that the equipment cannot, under usual operating
conditions, cause ignition of the specified flammable gas, vapor, dust, fibers, or flying objects caused
by arcing or thermal sources. Usual operation includes opening, shorting or grounding of the field
wiring.
Make sure to read all of the safety precautions, installation and wiring practices in this document
before the field transmitter and associated equipment is installed. It is important for the safety of the
user that the installation instructions from the manufacturer are obeyed. If the applicable safety
precautions are not obeyed, or if the equipment is not installed correctly, there is a dangerous
potential for an explosion. Only qualified personnel must supply oversight in all hazardous location
installations.
D A N G E R
D A N G E R
D A N G E R
D A N G E R
Specifications
on page 4. As an alternative, the
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