Specifications; Functions And Use; Technical Data - TESTO 540 Instruction Manual

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...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
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:
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
card
Specifications 13