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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
Lux-Multimeter
(Art.-Nr. 32020)
Caution!
Please ensure you read these instructions before proceeding further! Please read through these
operating instructions carefully. Damage caused by failure to observe these instructions will invalidate the
guarantee. We shall accept no liability for any consequential loss resulting therefrom.
Contents
1.
Requirements for operation _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1
2.
Functional description _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1
3.
Safety advice _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2
4.
Controls _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2
5.
Changing the battery, connection and working position _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 3
6.
Operation and taking measurements _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 3
6.1
General _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _3
6.2
Taking measurements _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 4
6.3
How to use the Data-Hold function _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 4
6.4
How to use RECORD/RECALL to record measurements _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 4
6.5
Auto power-off function _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 4
6.6
Table for different levels of illumination _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _5
7.
Maintenance _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 5
8.
Technical data, measurement errors and table of units _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6
1. Requirements for operation
The requirements for operation of the luxmeter are:
• Measurement and display of the level of illumination of various light sources in the units LUX [lx] or foot-
candle [ft-cd] in the range 0 to 100000 lx or 0 to 10000 ft-cd respectively.
• Measurement under the following adverse ambient conditions is not admissible:
- dampness or high air humidity;
- dust and flammable gases, vapours or solvents;
- severe vibrations;
- strong magnetic fields as in the vicinity of machines or loudspeakers;
- static electricity (fields and discharges).
Use other than as described above will lead to damage of this product, besides being associated with
hazards such as short-circuits, fire, electric shock etc. No part of this product may be altered or converted!
Safety advice must be observed!
2. Functional description
The luxmeter with digital display is a light meter for determining existing or required brightness
(luminance). It is an aid, for example when measuring lighting installations. This instrument is not however
for a laboratory and so is not suitable for scientific purposes. Besides the null position (ZERO), this
measuring instrument offers a so-called recording mode as a special function which you can use to
capture and display at any time the maximum (MAX), the minimum (MIN) and the average (AVG) light
intensity over a given period of time. In addition you can decide between various light sources, thereby
finding out the approximate light level for your living room, office, hobby workshop and so on. You can
choose between sunlight or the light of a filament lamp ('Tungsten/Sun'), fluorescent lamp ('Fluorescent'),
sodium vapour lamp (`Sodium`) and mercury vapour lamp (`Mercury`). With each of these four switch
positions the incident light is evaluated in a different way. Using the HOLD function you can quickly hold /
freeze the different signals measured. The LUX/FC key select lux (lx) or ft-cd (foot-candle, 1/10 lx).
Principle of operation: by means of a sensitive photocell (sensor, light-dependent resistor LDR) the
incident light is transferred over an stretchable spiral cable in the form of an electrical voltage to the
measuring electronics and displayed in lux or fc, depending on the switch position. The external sensor
thus allows convenient measurement points. The instrument is powered by a commercially available 9V
monobloc battery.
Summary of Contents for 32020
Page 9: ...Optimal Lux Values Table ...
