STEP SYSTEMS 32020, Руководство по эксплуатации

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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: info@stepsystems.de
www. stepsystems.de
Current consumption: approx. 5.3 mA DC
Low battery indication:
LBT is displayed for battery voltages below 7.5 V
Auto Power-Off Function:
Automatically switches instrument off after approx. 10 min. without
operation of keys (except when on RECORD)
Temperature for
guaranteed precision:
+23°C ( 5 K, at rel. humidity < 80%, non-condensing)
Weight:
approx. 335 g (incl. Batteries, but without sensor)
Dimensions (LxWxH):
Instrument 180x72x32 mm (without sensor connection);
sensor 85x55x12 mm (without lead)
8.2 Measurement tolerances
Tolerances are given for an instrument environmental temperature range of +23°C ± 5K. The precision is
given in ±(% of the r number of digits in error = digits).
Measurement range Tolerance Resolution
2 000 lx
20 000 lx
100 000 lx ± (5 % + 2 digits)
± (5 % + 2 digits)
± (5 % + 2 digits)
1 lx
10 lx
100 lx
200 ft-cd
2 000 ft-cd
10 000 ft-cd ± (5 % + 2 digits)
± (5 % + 2 digits)
± (5 % + 2 digits)
0,1 ft-cd
1 ft-cd
10 ft-cd
Remarks
1.
The precision given applies only up to 50000 lx or 4650 ft-cd; above that no specification is given.
2. Tolerances refer to filament lamps with a light temperature of 2856 K.
3. Tolerances are valid for electromagnetic field strengths up to 3V/m at 30 MHz and below.
8.3 Conversion table (approx.)
Lux
lx ( lm / m
2
)
phot
ph ( lm / cm
2
)
foot candle
fc ( lm / ft
2
)
Watts per cm
2
W / cm
2
1
1 000
10,76
200 000
1 x 10 exp -4
1
1,076 x 10 exp -3
20
9,290 x 10 exp -2
9,290 x 10 exp 2
1
19 000
5 x 10 exp -4
5 x 10 exp -2
5,4 x 10 exp -5
1
(1 ft = 33 cm approx.)
8.4 Max. inputs
Measurement range Max. input / reading
2 000 lx
20 000 lx
100 000 lx 0 to 1999 lx
2000 to 1999 ,,0” (factor 10) lx
2000 ,,0” to 1 000 ,,00” (factor 100) lx
200 ft-cd
2 000 ft-cd
10 000 ft-cd
0 to 180,6 ft-cd
167 to 1806 ft-cd
1670 to 1000 ,,0” (factor 10) ft-cd
Note:
The luxmeter serves only as an aid. It is not suitable for the laboratory or for scientific purposes.