8. Operation
a) Startup
• The instrument comes with all necessary accessories for making measurements.
•
Place the instrument on a flat solid surface. Do not place the instrument under direct sunlight.
• The instrument is powered by four 1.5 V AAA batteries. Load the supplied AAA batteries as
described below.
- Find the battery compartment
(4)
on the back of the instrument, then use an appropriate
screwdriver to remove two screws fastened on the lid of the battery compartment.
-
Remove the lid of the battery compartment, then insert the four supplied AAA batteries in
the battery compartment according to the correct polarities (+/-) as indicated.
-
Replace the lid, then fasten the lid with the two screws using the screwdriver.
• Press the /
button
(8)
to turn the instrument on or off. When the instrument is turned
on, “STBY” (standby) is displayed.
If the battery power is low, the icon
(G)
is displayed. In this case, replace with new
batteries.
b) Notes for an accurate measurement
1
General rules
•
Always place the instrument on a flat solid surface when taking measurements.
• Do not place the instrument under direct sunlight.
• Always keep the sample holder
(10)
of the instrument occupied with a capped glass bottle
(1)
when the instrument is not used. This can prevent dust and dirt entering inside the sample holder.
• Always cap the glass bottle when taking measurements.
• Always use glass bottles without scratches or cracks because they can cause inaccurate
readings.
• Always cap the glass bottle to avoid spillage of the sample into the instrument.
2
Glass bottles and handling
• The supplied glass bottles are important for accurate measurements. The light reaches the
sample by passing through the glass of the bottle. So the measurements can be affected by
glass imperfections (e.g. dust, dirt, fingerprints or scratches present on the surface of the
glass bottle). Special care must be taken when handling the glass bottles.
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