IAM-100 and Controller Manual
10
6209-9000 Rev 2
Section 2. Placing Sensors
2.1. General Guidelines
NOTE:
This instrument is equipped with a semiconductor sensor
for the detection of refrigerant gases. Semiconductor sensors are
not gas specific and respond to a variety of other gases including
propane exhaust, cleaners, and solvents. Changes in
temperature and humidity may also affect the sensor’s
performance.
The IAM-100 and optional controller (where applicable) should be positioned
carefully to avoid mechanical damage (from moving machinery, doors, etc.)
and thermal extremes (close to heaters). Units should not be placed
unprotected in direct or strong drafts/airflows and areas where water,
moisture, or steam is present.
Avoid routing sensor cabling outside of premises, or between buildings via
overhead cables. Also, sensor wiring should be kept a minimum of 500 mm
[20 inches] from the main power supply and telephone cables.
When connecting the main power supply and/or sensor cables ensure a
second strain relief is used. As a strain relief, use a cable tie inside the
enclosure within 25mm [1 inch] of the cable termination.
NOTE:
The
IAM-100 and optional controllers must be located
within the appropriate wire lengths from the central control unit (if
used).
In all cases the sensor supplied is designed for maximum sensitivity to a
particular gas. However, in certain circumstances false alarms may be
caused by the occasional presence of sufficiently high concentrations of
other gaseous impurities. Examples of situations where such abnormalities
may arise include the following:
•
Room maintenance activity involving solvent or fumes or refrigerant
leaks.
•
Heavy localized exhaust fumes (carbon monoxide, dioxide, and
propane).
An optional response delay may be activated to minimize the possibilities of
false alarms.
Summary of Contents for IAM-100
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Page 14: ...IAM 100 and Controller Manual 14 6209 9000 Rev 2 Figure 6 Controller Housing ...
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