TESTO 540 - Specifications; Technical data; Further instrument data; Directives, standards and tests

Specifications 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:
Lux (lm/m
2
), foot candle (lm/ft
2
)
· Measuring ranges:
0...99999 Lux, 0...93000 ftc
· Resolutions:
1 Lux (0...19,999 Lux), 10 Lux (rest of
range)
0.1 ftc (0...1,858.0 Lux), 1 ftc (rest of
range)
· Accuracies (Nominal temperature
25 °C, ±1 Digit):
3 % to reference
· Measuring rate:
0.5 s
Further instrument data
· Protection class: IP40
· Ambient conditions:
0...50 °C, 32...122 °F
· 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:
133x46x25 mm (inc. protection cap)
· Weight: 95 g (inc. batteries and
protection cap)
Directives, standards and tests
· EC Directive: 89/336/EEC
Warranty
· Duration: 2 years
· Warranty conditions: see guarantee
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