At the Ultima Remote Sensor Location
1. Open the Ultima Remote Sensor cover by unscrewing it.
"!
WARNING
Before removing the cover of an explosion-proof Ultima
Remote Sensor, verify that the surrounding area does not
contain a flammable mixture of combustible gas and air
since a source of ignition is exposed; otherwise, an explosion
may occur if a metal object contacts the circuitry and
produces sparks.
Figure 1-27.
Toxic Gas Remote Sensor Cable
Figure 1-28.
IR Combustible Remote Sensor Cable
Chapter 1, Set-up
1-25
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