All rights reserved.
Printed in
Germany.
STEP Systems GmbH 2016
Duisburger Str. 44
Tel: ++49 (0) 911 96 26 05-0
Fax: ++49 (0) 911 96 26 05-9
D-90451 Nürnberg
e-mail:
www.
stepsystems.de
3. Safety advice
• The Lux Multimeter instrument has been CE tested (for domestic use) and so meets the EMC directive
89/336/EEC.
• The instrument left the factory in a safe condition free of defect. To maintain this standard and ensure
hazard-free operation, the user must observe the safety advice and caution notes contained in these
operating instructions.
• Measuring instruments and accessories do not belong in children's hands!
• In commercial premises the accident prevention regulations for electrical plant and equipment of the
federation of industrial trade associations are to be observed.
• In schools, training establishments, hobby and self-help workshops, the use of measuring instruments is
to be supervised by trained responsible personnel.
• Do not operate the instrument unless the casing is securely closed and screwed up, e.g. after changing
the battery.
• Before each measurement, check the probe(s) and the instrument (leads, socket, keypad covers) for
signs of damage.
• Avoid operation in very damp and wet conditions.
• Adverse light conditions, e.g. sunlight, may make reading the optical display difficult.
• Do not work with the instrument in rooms or in adverse environments where flammable gases, vapours
dusts are or might be present. Avoid operation in the immediate vicinity of
a) strong magnetic fields (loudspeakers, magnets);
b) electromagnetic fields (transformers, motors, coils, relays, contactors, electromagnets etc.);
c) electrostatic fields (charging and discharges);
d) radio antenna since this could cause erroneous readings.
• When measuring, only use the light sensor supplied with the instrument. Alteration of the mechanical or
electrical properties of the instrument or light sensor by distortion/bending or conversion respectively will
invalidate warranty.
• If operation becomes unsafe, the instrument is to be rendered inoperable to avoid inadvertent operation.
Unsafe operation is to be assumed if
- the instrument shows visible signs of damage;
- the instrument no longer works; and
- after a fairly lengthy period in store under adverse conditions; or
- after severe shock during transport.
• Never switch the measuring instrument on immediately after bringing it into a warm room from the cold.
The condensation produced may possibly destroy your instrument. Leave the instrument switched off and
let it come up to room temperature.
4. Controls
4-1
3-digit LCD for displaying measurements and a sub-display (of smaller size underneath) for the
multiplier (in the case of larger measurement ranges) and the sub-functions Record and Recall.
4-2
ON and OFF key
4-3
HOLD function key
4-4
Toggle from LUX (lx, lm/m2) to ft-cd (FC = FOOT-CANDLE, lm/ft2)
4-5
Record key for recording a Min/Max/Avg value
4-6
Recall key for recalling Min (minimum), Max (maximum) and Avg (average) values
4-7
Key for selecting from four benchmark levels for four different light sources:
Tungsten (filament lamp)/Sun (sunlight)
Fluorescent (fluorescent lamp)
Sodium (sodium vapour lamp)
Mercury (mercury vapour lamp)
4-8
Key for zeroizing display
4-9
Measurement range switch for the ranges 2000 lx or 200 ftcd, 20000 lx or 2000 ft-cd
and 100000 lx or 10000 ft-cd.
4-10
Light sensor
4-11
Sensor cover
4-12
Sensor connection plug
4-13
Sensor connector socket (on measuring instrument)
4-14
Battery compartment cover (on underside of casing)
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