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Chapter 2 __________________________________________________________ Product Overview
CHAPTER 2
PRODUCT OVERVIEW
Introduction to OMT364
OMT364 in Hazardous Locations
CAUTION
VAISALA _______________________________________________________________________ 17
The following sections provide a short overview of the Vaisala
®
SPECTRACAP
Oxygen Transmitter OMT364 and describe the three
different versions of the product.
The OMT364 is an optical device for measuring oxygen concentration
in gases. The instrument consists of a measurement probe attached to an
electronics enclosure. Typical applications of OMT364 include inert
gas blanketing and pharmaceutical processes in demanding
environments, where hazardous gas is present. The nonincendive
transmitter can be located in Class I, Division 2 and the encapsulated
probe in Class I, Division 1.
Because of the structure of the transmitter, pay special attention to
selecting the location where the transmitter will be installed and take
into consideration the Division separation, see
Figure 2 on page 19
for cabling given in the control drawing, see
Preparation Instructions, on page
Samples in excess of 25% O
in hazardous areas!
and
Figure 3 on page
155.
should not be measured (or appear)
2
Figure 1 on page
20. Follow the instructions
Appendix A, Flange
19,
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