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.
Features:
- For quick and easy measurements in the workplace
- Sensor based on the spectral sensitivity of the human eye
- Hold function, min/max values
- Protective cap for safe storage
Technical Data:
| Light |
|
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 sec
|
| General technical data |
|
Weight
|
3 oz. (incl. batteries and protective cap) / 95 g (incl. batteries and protective cap)
|
|
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
|
|
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
|
