•
Do not locate any transmitter further than 4000 feet from a control panel or expansion
pack.
•
The types of gases each unit is designed to monitor have densities approximately equal
to that of air. For maximum safety, mount the unit at the average breathing height –
approximately 5 to 7 feet from the floor.
•
Avoid mounting locations that would not be representative of the average gas value in
that area. These include but are not limited to locations near doorways, fans, ventilation
inlets and outlets, and areas with air velocities in excess of 3.3 ft/s (1 m/s).
•
Avoid locations that would allow direct contact with water. Mounting the unit near
outside garage doors may allow rain to hit the unit when the door is open.
•
Avoid locations that are directly in the outlet air vents of heaters or air conditioners.
•
Avoid mounting locations with normal ambient temperatures below -4°F (-20°C) or
above 122°F (50°C).
•
Do not allow exhaust from engines to flow directly on the unit. Each unit is designed to
sense gas concentrations that are 300 to 1000 times less concentrated than the gas
levels found in engine exhaust. Also, engine exhaust contains high levels of other
components. These components can shorten the useful life of the sensor if they contact
the sensor before being diluted by the room air volume.
•
Avoid mounting locations where the unit may be hit by passing vehicles. If the unit must
be mounted in these locations, provide a shielding cage around the unit for protection.
•
Do not restrict the air flow to the unit housing.
•
Do not mount the unit in a corner.
•
Do not mount the unit near containers of chemicals such as gasoline, kerosene, alcohol,
or other cleaning fluids. High level concentrations of these chemicals may be mistaken
as the target gas by the sensor and cause false readings. Also, some welding gases
may cause false readings.
The transmitter is attached in the mounting position in one of three ways.
•
Attach the housing to conduit using appropriate conduit fittings. If you use this method,
make sure that the conduit is securely attached to a solid support. Firmly tighten the
threaded nuts on the conduit fittings inside the transmitter housing so they will not
loosen over time.
•
Attach the housing to a four inch square conduit box using the ½ inch fitting provided
with the transmitter. Make sure that the conduit box is firmly fastened to the mounting
IOM03
Rev 1.1 – May 18, 2021
14
