Testo 545 | Lux meter

The Testo 545 is a compact handheld device which is ideal for measuring light intensity in everyday applications. The instrument has an accuracy of ± 3 %, ±  1 digit, and a range of 0 to 100 000 Lux along with a battery life of up to 70 hours. The measuring instrument is compatible with almost all commercially available LED's and thus ensures you a wide range of applications (except single-colour blue).

The 545 can also be used with the free to download Testo Smart App that turns your smart phone or tablet into a second display.  This easy to use  software has menus for numerous applications, and you can create digital reports with photos that can be e-mailed.

Features

• Fast in-app configuration, graph history, second screen and measurement data memory in the testo Smart App
• Supplied with manufacturers calibration protocol
• Audible alarm sounds if a limit value is exceeded
• Timed and point mean value calculation
• Wide range of applications due to LED compatibility (except single-colour blue LED)
• Sensor adapted to spectral sensitivity of the eye (Lux)

Technical

Measurement range      0 to 100,000 Lux

Accuracy      ± 3 % of m.v. ±1 digit : Class C, corresponding to DIN 5032-7 / EN 13032-1, Appendix B, f1 = 6 % = V(Lambda) adjustment, f2 = 5 % = cos-true evaluation, Total ≤ 15 % 

Resolution      0.1 Lux (<10 000 Lux) and 1 Lux (over the remaining range)

Storage temperature      - 20 to + 50 °C

Operating temperature       0 to + 50 °C (Probe)

Battery type      x3 AA batteries

Battery life      70 h (Typical)

Weight      288 g

Dimensions      149 mm x 60 mm x 28 mm (instrument), 135 mm 54 mm x 23 mm (probe)