©
AirSense Technology Ltd. 2005
Page 22
Stratos-Micra 100
• INSTALLER’S HANDBOOK • Iss. 3
Cable glands
Two port docking station
Mounting
screw holes
Earth stud
Sampling
pipe ports
Cable glands
Exhaust
port
Two port + piped exhaust
docking station
Mounting
screw holes
Earth stud
Sampling
pipe ports
6.1 Docking station
The basic principle behind installation of the Micra is that all wiring and pipe-work is
installed using a
docking station
. This is a convenient feature which means that the
detector can be dismounted or replaced without disturbing any wiring or installed
pipe-work.
There are two types of docking station, one with a single inlet port for aspirating pipe-
work, the other with a second port allowing the detector exhaust air to be taken back
to the area of different atmospheric pressure from which the inlet is sampling (
see
section 4, “Sampling Pipe Design”, paragraph 1
).
Before installing the detector the local standards for installation of aspirating detection
systems must be consulted as these standards differ throughout the world. Specific
advice for one country may not be applicable to another. The following is a brief set of
guidelines on installing detectors.
n
The detector will normally be mounted at a level where there is easy access to the
unit for configuration and programming.
n
The exhaust air from the unit must not be impeded in any way. If the unit is
mounted in a different air pressure from where the air is being sampled (for
example an air duct), then a pipe must be taken from the exhaust port back to the
same air pressure zone as the sampling holes.
n
All signal cables must be screened and must be of a suitable type. The specific type
of cable will normally depend upon the local fire regulations.
n
The unit must not be placed in areas where either the temperature or humidity is
outside the specified operating range.
n
The unit should not be placed in close proximity to any equipment expected to
generate high Radio Frequency levels (such as radio alarms) or units generating
high levels of electrical energy (such as large electric motors or generators).
6. Installation
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