User manual

20
operating position
1. Battery replacement
The meter uses a 9-volt battery to ensure
proper functioning. Replace the battery as
soon as the “LBT” (low battery) symbol ap-
pears on the top left of the screen. (The sym-
bol appears when the battery voltage falls
below 6.5 – 7.5 V.) A full battery will ensure
that the meter operates with complete preci-
sion. Take the following steps to remove the
battery:
Remove the sensor from the meter and turn
it off. Use a suitable screwdriver to carefully
pry the battery cover off from the bottom sec-
tion of the housing. Disconnect the used bat-
tery from the connecting clip and replace it
with a new battery of the same type. Be sure
that the poles are aligned properly. After the
battery has been connected properly, insert
it in the battery compartment and close care-
fully. Be careful not to pinch the wires that
connect the clip as you close the compart-
ment.
Caution!!! The meter will be destroyed if
you reverse the poles of the battery. Never
operate the meter while it is opened. Never
allow used batteries to remain in the meter.
Even leak-proof batteries can corrode and
release chemicals which can destroy the
battery compartment and be dangerous to
your health. Used batteries should not be dis-
posed of with normal household waste. They
are hazardous waste and should therefore
be disposed of in an environmen tally correct
fashion.
2. Connecting the light sensor
A light sensor and sensor cover are included
with the meter. Connect the four-pole plug
on the light sensor to the “INPUT” socket on
the meter. The notch of the plug should be
pointed towards the bottom of the housing.
Always make sure that the plug is seated se-
curely in the socket. A loose connection can
lead to display errors.
3. Operating position
The LUX MULTIMETER should never be put
down on the buttons during operations.
It should always be used in a position where
the display is easy to read.
4. Using the “SAVE” function
The SAVE button (record function) is used to
start recording measurements; the minimum
(MIN), maximum (MAX) and average (AVG)
values that occur during the interval are
saved.
When the SAVE function is activated, you
can press the MEMORY button repeatedly to
view the MAX, MIN and AVG values.
In order to stop recording measurements,
press the SAVE button again. The meter will
return to showing the current measurement.
The following symbols are displayed on the
bottom left of the display during the mea-
surement recording process:
REC Start the recording
MAX Maximum value
MIN Minimum value
AVG Average value
Attention!!! The average value is not the
algebraic sum of the min. value plus the max
value divided by 2. The LICHTART, LUX/FC
and ZERO buttons are inactivated during the
measurement recording.
5. Auto-power function
The meter will turn off automatically to save
energy if no button is pressed for ten minutes
during a normal measurement. The auto-
shutoff function is deactivated when the
meter is in Record/Save mode.
6. Maintenance
The only maintenance required for the LUX
MULTIMETER is battery replacement and oc-
casional cleaning (of the housing, sensor and
display window). Use an anti-static cloth that
is clean, lint-free and dry.
Caution!!! Do not use benzene, alcohols or
similar carbon-based cleaning solvents for
cleaning. They will damage the surface of
the meter and their vapours are unhealthy
and explosive.
The LUX MULTIMETER should only be used
as a support tool. It should not be used in a
laboratory or for scientific purposes.
Battery replacement, connection and