TESTO 540 Mode D'emploi page 13

Specifications
Functions and use
The testo 540 is an illuminance measuring instrument. It is
normally used to measure illuminance, e.g. at workplaces.
Technical data
Measurement data
· Sensor:
Photo diode
· Parameters:
2
Lux (lm/m ), foot candle (lm/ft
· Measuring ranges:
0...99999 Lux, 0...9300 ftc
· Resolutions:
1 Lux (0...19,999 Lux), 10 Lux (rest of
range)
0.1 ftc (0...1,860 ftc), 1 ftc (rest of
range)
· Accuracies (Nominal temperature
25 °C, ±1 Digit):
± 3 Lux or ± 3 % to reference (Class B,
DIN 5032 part 7)*
· Measuring rate:
0.5 s
* whichever is the greater
on@ITM.com
Further instrument data
· Protection class: IP40
· Ambient conditions:
0...50 °C, 32...122 °F
2
)
· Storage/transport conditions:
-40...70 °C, -40...158 °F
· Voltage supply:
2x 1.5 V type AAA
· Battery life:
200 h (without display light)
· Dimensions:
133x46x25mm / 5.2x1.8x1.0 in (inc.
protection cap)
· Weight: 95 g / 3.4 oz (inc. batteries and
protection cap)
Directives, standards and tests
· EC Directive:2004/108/EEC
Warranty
· Duration: 2 years, warranty conditions:
see www.testo.com/warranty
Testo-Direct
www.
Specifications 13
.ca
1.800.5