1-1
Chapter 1,
Installation
General Description
The Ultima X Series Gas Monitor is designed to sample the
environment where mounted and alert you to potentially dangerous
levels of your target gas, depending on your particular model. The
Ultima X Series device uses various detection methods, depending on
the gas of interest. Detection methods can be electrochemical, infrared,
pellement or other technologies. The Ultima XE Gas Monitor is an
explosion-proof device suitable for installation in hazardous locations.
The Ultima XA Gas Monitor is a general-purpose version in a plastic
enclosure for use in nonexplosive atmospheres only. The Ultima X Gas
Monitor can be ordered with the standard 4 to 20 mA analog output or
with an optional HART (Highway Addressable Remote Transducer)
protocol, which is superimposed on the 4 to 20 mA signal. The unit is
factory-calibrated and shipped ready for installation.
The main sensor input is provided via a five-terminal interface that
provides a digital interface for 3 VDC or 5 VDC sensor modules. Many
different sensor modules are available, providing sensing capability for a
large variety of gases. The operating range varies with the type of cell
(e.g., electrochemical, pellistor or infrared combustible, etc.).
Identifying Your Unit
The Ultima XA Gas Monitor is housed in a rugged, plastic general-
purpose enclosure (FIGURE 1-1).
Figure 1-1. General-Purpose Ultima XA Monitor
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