Profort luxSpot Manual page 2

luxSpot
Monitoring of ambient light
Function:
luxSpot is a wireless detector with 1 built-in light sensor for measuring lux
values. luxSpot is applied exclusively to monitor the ambient light in a room.
Every 4 minute luxSpot sends the current lux value, and these data will be
logged in the central unit.
luxSpot is customized for indoor installation and therefore is unable to
measure large lux values e.g. direct sunlight. luxSpot is supplied by a 3V
lithium battery.
NB! luxSpot doesn't give a general alarm or sabotage. But luxSpot sends an
alarm in case of low battery power.
Assembly:
luxSpot is placed in the room or showcase where measurement of lux values is
required. luxSpot must be placed as high as possible. Preferably in a way that
the internal antenna is not "hidden" behind metal or reinforced concrete.
This considerably limits the reach of the antenna. Also place the luxSpot in a
spot, that reflects the general light level in the room.
luxSpot is installed by means of a screw going the whole way through the oval
hole or by means of double-sided tape.
NB! The sensor is placed just below the oval hole, therefore be careful when
mounting the detector.
Service and maintenance:
Every 6 months it is necessary to check if the transmission conditions for
luxSpot are optimal. This is done in the supervision facility of the central unit
by checking the amount of signals sent by luxSpot,as well as the RF signal
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strength. The RF signal strength must not be less than 25%. Also check
whether the lux measurements have the correct values.
If the signal strength is less than 25% the physical conditions impacting on
the signal strength must be regulated. Simultaneously it must be checked that
the central unit monitors the battery supply, so that the system receives a
warning in case the battery is about to expire.
To see if luxSpot functions it is necessary to check that the signals per every 4
minutes of measuring are actually logged in the system. This must be done if
there is any suspicion of transmission failure. Be aware that luxSpot has to be
registered as "surveilled" in the system in order for the system to give a low
battery warning.
If luxSpot doesn't function the battery must be changed. If this doesn't help,
replace the entire detector.
The battery is changed by loosening the 2 screws on the back of luxSpot. The
battery is loosened carefully using the fingers. Then insert a new battery. Be
aware that the battery must be placed in a way that it is not squeezed when
the cover is installed. The battery must be turned with the +pol towards the
battery clips. Take care that the antenna is not damaged.
Notice: luxSpot transmits the actual measurement of the lux value. If the
lighting conditions around luxSpot are suddenly changed, this will be
reflected in values that are highly variable. Also notice that the maximum
ambient light measurable by luxSpot is 3,500 lux.
Specifications:
Dimensions: 79 x 39 x 9 mm
Weight incl. battery: 25 g
Power supply: Battery 3V
Battery life time: Max. 3 years
Temperature: ÷10° - +55°C
Accuracy:
0-100 lux: ± 25 lux
100-500 lux: ± 100 lux
500-1,000 lux: ± 200 lux
More than 1,500 lux: ± 500 Lux
Min. lux: 0 lux
Max. lux: 3,500 lux
ver. 1.02