Testo 440 air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable, Lux probe with fixed cable (cable length 1.4 m) and calibration protocol, Basic case for testo 440 and 1 probe
Testo 440 air velocity and IAQ measuring instrument and a lux probe safely stowed away in the case
Long-term measurement and determination of illuminance according to the V-lambda curve
Standard Compliant accuracy according to DIN EN 13032-1 and class C according to DIN 5032-7
Non Slip probe contact surface for convenient positioning at the measuring location, internal data storage and USB port for data export
Use the testo 440 air velocity and IAQ measuring instrument in combination with high-quality probes to measure and store all air velocity and IAQ parameters (please order probes separately). Up to 3 probes can be connected simultaneously: a Bluetooth probe, a wired probe and a temperature probe with type K thermocouple connector. Automatic probe detection and clearly structured measurement menus guarantee simple operation and will make your day-to-day work easier.
Use the lux probe with the compatible testo multifunction measuring instrument (please order separately) to determine illuminance.
Lux probe – features
The lux probe is ideal for determining the illuminance in workplaces. It assesses the illuminance according to the V-lambda curve, which corresponds to the sensitivity of the human eye in daylight. White or warm light LEDs (K< 5,000) can also be measured without any problem.
The 1.4 m cable length means that you can place the probe directly at the measuring location and carry out the measurement from a sufficient distance. So the readings are not affected by your shadow.
The clearly structured measurement menu for long-term measurement enables the measuring instrument to be operated intuitively. Reading trends are reliably recorded thanks to the convenient input of measurement time and measuring cycle.
Intelligent calibration concept
You will get exceptionally accurate measurement results with the digital probe, because the measuring instrument makes measurement uncertainty a thing of the past. You only need to send the probe in for calibration – so the measuring instrument remains in continuous use.
Areas of application for the lux probe
Light conditions play an important role, particularly in the ergonomic assessment of workplaces. In order for light to also be good light, the illuminance must meet certain minimum values.
Use the lux probe to check the illuminance in offices and production areas, hospitals, museums or schools with reliability.
|Testo 440 Basic Display Unit|
|General Technical Data|
|Dimensions||154 x 65 x 32 mm|
|Operating temperature||-20 to +50 ┬░C|
|Battery type||3 AA mignon 1.5 V|
|Battery life||12 h (typically vane measurement)|
|Lux probe (digital) - for measuring illuminance, wired|
|Measuring range||0 to 100000 Lux|
|Accuracy||DIN EN 13032-1 Appendix B Class C according to DIN 5032-7|
|Resolution||0.1 Lux (< 10000 ) 1 Lux (> 10000 )|
|General technical data|
|Storage temperature||-20 to +50 ┬░C|
|Cable length||1.4 m|
Long-term monitoring of indoor air quality
Turbulence measurement in accordance with EN ISO 7730/ASHRAE 55
Convenience and maximum flexibility for duct and outlet measurement
Testo 540 lux meter, protective cap, calibration certificate and batteries
Testo 540 lux meter is a quick and easy-to-use entry level model for measuring lighting conditions in the workplaces.
Quick and easy light measurements
Hold function, min/max values
Protective Cap for safe storage
The testo 540 lux meter can be used to measure both artificial and natural light and provides you with a quick and easy means of measuring lighting conditions in the workplace.
The testo 540 lux meter: compact, easy-to-use, precise
The testo 540 lux meter is a pocket-sized 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 lux 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 Class B, DIN 5032 Part 7)|
|Resolution||1 Lux (0 to 19999 Lux), 10 Lux (Remaining Range)|
|Measuring rate||0.5 s|
|General technical data|
|Operating temperature||0 to +50 ┬░C|
|Storage temperature||-40 to +70 ┬░C|
|Battery type||2 AAA micro batteries|
|Battery life||200 h (average, without display illumination)|