3
I. INSTALLATION AND OPERATION
A.
Monitor
Installation
All monitors are able to accept either 120 VAC or 240 VAC single phase power at 50-60 Hz. When
connecting A/C power it is imperative that the power source is well grounded. Improper grounding
will disrupt proper operation of the unit.
Warning:
Ensure source power is disconnected from main power, prior to making the instrument
connection.
Monitors are NEMA 4X rated and should be installed at/near eye level and protected from exposure
to direct sunlight and rain. The monitor should be installed near, but outside of the chemical storage
room it is monitoring (see Figure 1a and 1b). Four
5
⁄
16
" DIA through holes are provided on the
enclosure for mounting the monitor against the wall.
FIGURE 1a
FIGURE 1b
B.
Sensor
Installation
Refer to Figures 1a and 1b for more information.
1. Determine a suitable mounting location. For monitoring gases heavier than air, the sensor should
be placed approximately 12-24 inches from the fl oor. For gases lighter than air, the sensor
should be placed 12-24 inches from the ceiling. Do not place sensor in any location where it
could become wet. This will damage the sensor.
2. Attach the enclosure to the wall using two
1
⁄
4
"-20 mounting screws (recommended).
3. Remove sensor calibration cap. Store this cap in a known location as it is necessary for
calibration when using a span gas. See Figure 2.
GAS ALARM
CONTROLLER
GAS SENSOR
12" - 24"
For gases heavier than air, sensor should be
mounted low.
GAS ALARM
CONTROLLER
GAS SENSOR
12" - 24"
For gases lighter than air, sensor should be
mounted high.
