The testo 540 lux meter: compact, easy-to-use, precise
The testo 540 light meteris a compact entry level model designed specifically for carrying out spot checks in the workplace, shops and offices. The light sensor is modelled on the spectral sensitivity of the human eye and is ideal for measuring lighting conditions in a variety of different workplaces.
The compact, easy-to-use meter has a number of useful functions and features including a large, easy-to-read display, min/max values which can be shown at the touch of a button, a hold function that allows you to freeze the last reading and a protective cap for safe storage.
|Measuring range||0 to 99999 Lux|
0 to 9300 ftc
|Accuracy||±3 Lux or ±3 % (compared to reference instrument at 90° light irradiation)|
|Resolution||1 Lux (0 to 19999 Lux)|
10 Lux (Remaining Range)
|Measuring rate||0.5 s|
|General technical data|
|Weight||95 g (incl. batteries and protective cap)|
|Dimensions||133 x 46 x 25 mm|
|Operating temperature||0 to +50 °C|
|Battery type||2 AAA micro batteries|
|Battery life||200 h (average, without display illumination)|
|Storage temperature||-40 to +70 °C|