The testo 540 lux meter can be used to measure artificial and natural light in the workplace.
The testo 540 entry-level light meter is designed 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 the workplace.
This compact, easy to use meter has a number of useful functions and features, including a large, easy to read display, min/max values, a hold function, and a protective cap for safe storage.
Delivery Scope testo 540 light meter, protective cap, certificate of conformity, and batteries
Smoke number - Photodiode |
Light | |
Measuring range | 0 to 99999 Lux |
Accuracy | ±3 Lux or ±3 % (compared to reference Class B, DIN 5032 Part 7) |
Resolution | 1 Lux (0 to 19999 Lux) 10 Lux (Remaining Range) |
Measuring rate | 0.5 sec |
General technical data | |
Dimensions | 5 x 2 x 1 in. / 133 x 46 x 25 mm |
Operating temperature | 32.0° to 122.0 °F / 0 to +50 °C |
Protection class | IP40 |
Warranty | 2 years |
Battery type | 2 AAA batteries |
Battery life | 200 h (average, without display illumination) |
Storage temperature | -40.0° to 158.0 °F / -40 to +70 °C |
Weight | 3 oz. (incl. batteries and protective cap) / 95 g (incl. batteries and protective cap) |