CALIBRATION PROVIDED BY UTA CONTROL
DEVICE
The Boomerang TRX device must be adjusted by
mean of UTA control device or an ADM adapter and
multimeter. The sensitivity
smoke threshold
is set up
in the factory at
600 divisions
. Because building
noise can be associated with various sensitivity levels,
and in order to avoid any unwanted alarms, the correct
calibration procedure must be followed using the de-
vices suggested.
If you use UTA calibration meter:
a
Insert the jack plug in the TRX socket. Switch on
the UTA device and select “
detector
” mode
(6).
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 movements, 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
To adjust the smoke threshold select UTA device “
Smoke” mode
. The value first read in the UTA is
around 600 divisions. Turn the smoke trimmer “D” clockwise on the TRX device until it reads the UTA
values in accordance with the instructions in “c” above. Threshold values above 1000 are not recom-
mended unless you first speak to our authorised services.
e
To adjust the fire threshold select the UTA device’s fire mode. The reading will be around 400 divisions.
Only if in the detector mode there were peaks around 280/300 divisions will you wish to adjust this
threshold as follows: set the UTA to “Fire” mode and adjust trimmer “C” up to the set the threshold at
450 divisions. Contact our technical services if you wish to raise this level above 450 divisions.
f
Switch OFF and disconnect the UTA Jack plug, store the instrument in a cool place dry with its batter-
ies 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 re-
specting the polarity. Set the multimeter
scale to millivolt.
b
Wait for some minutes and read the mul-
timeter’s peak noise values in milliVolt.
This procedure must be carried out while
all the interference factors (hot air move-
ments, airborne dust, lights etc) are pre-
sent in the building.
c
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’s “
Smoke” mode
. Turn the smoke trimmer “D” clockwise on
the TRX device until it reads in the multimeter the values in accordance with the instructions in
“c”
above. Threshold values above 1000 mV are not recommended unless you first speak to our author-
ised technical services.
e
To adjust the fire
threshold
select the ADM’s fire mode. The reading will be around 400 milliVolt. Only
if in the “
detector mode
” there were peaks around 280/300 milliVolt may you wish to adjust the thresh-
old as follows: set ADM in its
“Fire” mode
and connect the multimeter in the milliVolt scale unit, adjust
TRX trimmer “C” to set the threshold at 450 milliVolt. If you wish to raise this level above 450 milliVolt
you must first speak to our technical services.
f
Switch OFF and disconnect the ADM Jack plug. Store the ADM in a cool dry place with its batteries
removed.
