ATI Technologies B12-70 O & M Handboek - Pagina 4
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Pagina afdrukkenModel B12-70 Wet Acid Gas Transmitter
The Series B12-70 is a two-wire transmitter system designed for use with a special acid gas
sensor (for HF, HCl, or HBr) suitable for use in very wet environments. It provides a low power method of
monitoring acid gas in applications where excessive moisture causes rapid blinding of standard acid gas
sensors.
Transmitters are housed in a NEMA-4X polystyrene enclosure (Figure 3) suitable for installation
in virtually any environment. The sensor cable is wired to the proper terminals in the transmitter through
the Pg 11 cable gland located in one of the enclosure knockouts. One cable gland and one ½" conduit
hub is supplied for customer installation. An optional LCD provides local indication of gas concentration
on the front of the enclosure. The display is supplied only when specified on the order, and cannot be
added in the field.
B12 Transmitters are also available in an explosion-proof version. The explosion-proof version is
housed in a galvanized steel enclosure (Figure 4) rated for Class 1, Div. 1, Groups B, C, & D locations.
LCD is not available on the XP version.
Figure 1 shows a typical insertion B12-70 gas monitoring system. The sensor is shown threaded
into a blind flange of a vent stack.
Figure 1 - Typical Insertion System Installation (ATI-0156)
O & M Manual
-Release E, 7/15
INTRODUCTION
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