CALIBRATION PROVIDED BY UTA CONTROL DEVICE
The sensitivity
smoke threshold
is set up in the factory
at
600 divisions
level. Because the building noises are
linked to several sensitivity levels, in order to avoid un-
wanted alarm, the right calibration have to be followed
with the (UTA or ADM) devices suggested as follow.
If you use
UTA
:
a
Insert the jack plug in the TRX socket. Switch on the
UTA
device and select
“Detector” mode
.
b
Wait for some minutes and read the LCD’s peak
noises value displays. This procedure must be carried
out while all the interference factors (hot air move-
ments, airborne dust, lights etc) are present in the
building.
c
If the peak values read on the UTA give less than 50
divisions, the TRX smoke threshold normally set in the
factory (600 divisions) can be accepted. If the peak
levels are higher, the smoke threshold has to be increased to 100 divisions plus every 50 divisions over
the first 50 division. (e.g. if there are 100 ‘noise’ divisions read on the UTA in the detector mode you must
raise 100 divisions in the smoke threshold 600+100=700. Noise at 150 divisions (600+200=800). Noise
at 200 divisions (600+300=900). Noise at 250 divisions (600+400=1,000).
d
In order to adjust the threshold select UTA device in “
smoke” mode.
The original reading in the UTA is
around
600 divisions
. Turn the smoke “D” trimmer clockwise on the TRX device until the UTA reads
values according to the instructions in
“c”
above. Threshold values above 1000 are not recommended
unless you first speak with our technical services.
e
To adjust the
fire threshold
select the UTA device’s fire mode. The reading will be around 400 divisions.
Only if the detector mode read peaks around 280/300 divisions may you wish to adjust this threshold as
follows: set UTA in “
Fire” mode
and adjust trimmer “C” to set threshold at 450 divisions. If you wish to
raise the level above 450 divisions you must first speak to our authorised technical services.
f
Switch OFF and disconnect the UTA Jack plug, store the instrument in a cool dry place with its batteries
removed.
CALIBRATION PROVIDED BY ADM DEVICE
AND MULTIMETER
If an ADM is being used:
a
Insert the
ADM
jack plug in the TRX socket.
Switch on ADM and select “
detector”
mode.
Insert the ADM’s plugs in to multimetr
respecting the polarity. Set the multimeter
scale to millivolt.
b
Wait for some minutes and read the multimeter’s
peak noise values in milliVolt. This procedure must
be carried out while all the interference factors
(hot air movements, airborne dust, lights etc)
are present in the building.
c
If If the peak values peak read on the multimeter are less than 50 milliVolt, the TRX smoke threshold
normally set in the factory (600 milliVolt) can be accepted. If the peak levels are higher, the smoke
threshold has to increase 100 milliVolt plus every 50 milliVolt over the first 50 milliVolt. (e.g. if there is a
100 milliVolt noise reading on the ADM in the detector mode you must raise 100 milliVolt in the smoke
threshold 600+100=700. Noise at 150 milliVolt (600+200=800). Noise at 200 milliVolt (600+300=900).
Noise at 250 milliVolt (600+400=1,000).
d
To adjust the threshold select the ADM in smoke mode. Turn the trimmer smoke “D” in a clockwise direc-
tion on the TRX device until it reads the multimeter values according to the instructions given in
“c”
above. Threshold values over 1000 mV are not suggested unless you have first consulted with out
authorised services.
e
To adjust the fire
threshold
select the ADM device’s fire mode. The reading will be around 400 milliVolt.
Only if in “
detector mode
” you read peaks around 280/300 milliVolt may you wish to adjust this threshold
as follows: set the ADM in
“Fire” mode
and connect the multimeter in milliVolt scale unit, adjust the TRX
trimmer “C” to the 450 milliVolt threshold. If you wish to raise this level above 450 milliVolt you must first
consult with out authorised technical services.
f
Switch OFF and disconnect the ADM Jack plug. Store the ADM in a cool dry place with its batteries
removed.
