Testo 540 Data sheet

Light intensity
measuring instrument

testo 540 – Pocket-sized Lux meter

We measure it.

Sensor adapted to spectral sensitivity of the eye

Hold-function and max./min. values

Display illumination

The sensor in the testo 540 is adapted to the spectral

sensitivity of the eye. This makes the testo 540 ideally

suited to the measurement of light intensity at workplaces.

Lux

Illustration 1:1

The hold-function allows the comfortable readout of the

measurement values. Max. and min. values are displayed at

the press of a button. The clip-on protective cap, wrist strap

and belt holder ensure safekeeping of the instrument. testo

540 is very handy, small and easy to operate.

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testo 540

Technical data / Accessories

Sensor type Silicone photodiode

testo 540

testo 540 handy Lux meter incl. protection cap,
batteries and calibration protocol

Part no. 0560 0540

Measuring range

Accuracy
±1 digit

Resolution

General technical data

Measurement rate 0.5 s

Storage temperature -40 to +70 °C

Protection class IP40

Operating temperature 0 to +50 °C

Battery type 2 AAA micro batteries

Battery life 200 h (average, without display illumination)

Dimensions 133 x 46 x 25 mm

Weight 95 g (incl. batteries and protective cap)

Warranty 2 years

We measure it.

0 to 99999 Lux

±3 Lux or ±3 % of mv (compared to
reference Class B, DIN 5032 Part 7)

1 Lux (0 to 19999 Lux)
10 Lux (remaining range)

0981 9794/msp/A/08.2013Subject to change without notice.

Accessories

Accessories for measuring instrument

Calibration points 0; 500; 1000; 2000; 4000 Lux

Part no.

0520 0010ISO calibration certificate/light

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