©
AirSense Technology Ltd. 2005
Page 23
Stratos-Micra 100
• INSTALLER’S HANDBOOK • Iss. 3
6.1.2 Mechanical installation
The docking station is connected to the installed sampling pipe-work and fixed to the
wall or mounting surface using 3 off screws of a type appropriate to the mounting sur-
face. Ensure that the sampling and/or exhaust pipes are securely seated in the pipe
ports before fixing. If using a piped exhaust docking station be sure that the sampling
and exhaust pipes are fitted into the relevant ports as shown in section 6.1.
6.2 Electrical installation
The Stratos-Micra 100 detector is supplied with removable terminal blocks
(See illus-
trations in Section 2.2)
. These are simply removed from their sockets by lifting them
up at right angles to the circuit board. Take note of the orientation of each terminal
block and its function before removing it. It may also be beneficial to mark the con-
nection wires with suitable identification labels or coloured rings to aid in the connec-
tion process.
NB: All connections should be made with the power turned off.
6.2.1 Power supply connections
The power supply cable should be of screened type and should be led through the
metal cable gland provided, leaving about 35mm of the cable extending from the bot-
tom of the cable gland. Depending on the type of cable used, it may be necessary to
increase the diameter of the cable with sleeving or insulating tape to ensure that the
cable is firmly held when the cable gland is fully tightened.
Remove the detector cover by unfastening the four screws
at the front of the unit and detach the power supply termi-
nal block. This is on the small fan relay board located at the
top left with the detector held with the serial port at the
bottom of the unit.
NB,
note the orientation of the terminal block.
Connect 0V and +24VDC to the “0V” and “24V” screw ter-
minals respectively. Connect the screen wire to the earth
stud on the docking station and connect a second wire
from the “Earth” terminal to the docking station earth stud.
The picture in Section 5.1 shows the location of the earth
stud. Fix the earth wires in place with the nuts provided.
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