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B
A
G
4. SET up
4.1.
Installing/Changing Battery (fig.1)
4.1.1.
on either side of the trigger, where the handle moulding meets the main body there are two very
shallow recesses. Place thumb and finger into these recesses and pull the front section of the handle
forward and down to reveal the battery compartment.
4.1.2.
Attach the battery connector to the battery terminals and place the battery into the battery compartment
making sure that the connection leads will not foul the cover when it is closed.
4.1.3.
When the 'battery low' indicator appears on the display replace the battery immediately,
(See environmental Protection)
5. OpERATION AND AppLIcATION
5.1.
Depress the trigger (1) in fig 3 to switch on the unit, the 'SCAN' icon will illuminate.
5.2.
Decide what units are required by pressing the '°C/°F' button (3) in fig 3. The button will toggle
between the specified units.
5.3.
Pay attention to the distance from the thermometer to the target as the
target surface size increases with distance. A ratio of 12:1 exists, see fig 2.
make sure the target is larger than the unit's spot size. The smaller the
target, the closer the distance "d". When accuracy is critical ensure the
target is at least twice the spot size.
5.4.
The unit is equipped with a laser for the purpose of aiming only. With the
laser button (2) in fig 3 in the 'on' or 'off' mode, aim at the target surface
and depress the trigger. The temperature of the target surface will be
displayed on the lCd display screen. When the trigger is released the
reading will be held for 7 seconds approximately; the 'Hold' icon will
be illuminated in this period; and then the thermometer will automatically
shut down unless the trigger is depressed again.
5.5.
To locate a hot spot on a large surface, aim the thermometer as in 4.4, then scan across the area with a controlled uniform "zig-zag"
sweep until you locate the spot, as illustrated in fig 4.
fig.4
6. NOTES ON EMISSIVITy
6.1.
emissivity is a term used for the ability of a surface to radiate energy. This unit has been pre-set with an emissivity of 0.95, which
makes it suitable for 90% of typical applications.
6.2.
Inaccurate results will occur when targeting shiny or polished surfaces. As a tip, apply a non reflective tape to the area to be
tested allowing time for the surface temperature of the tape to reach that of the substrate.
7. cLEANING
7.1.
The sensor lens is delicate and should be kept clean at all times. Use a cotton bud and medical alcohol, allowing lens to dry. The
casing can be cleaned with a moist cloth and mild soap but never submerged.
© Jack Sealey limited
C
lCd display-:
d
A: Data hold icon
B: Scanning icon
C: laser "on" icon
e
d: Backlight "on" icon
e: Battery status icon
F: Temperature units (°C or °F)
G: Temperature reading
F
Trigger
depressed
Original Language Version
2) laser
on/off
4) Back light
on/off
3) Units
°C/°F
VS900.V3 Issue 3 (HF) 11/04/18
fig.1
fig.2
1)Trigger
fig.3
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