Developed by Observator Instrument B.V. for the automatic measurement of air volume from supply and extract terminals, this instrument has a built in fan and pressure compensation facility that ensures minimum errors during use.
Designed to be self-adjusting for supply and extract systems, the instrument automatically detects the direction of flow allowing the 250 mm square aperture to be placed securely over the grille. The adjustable display arms not only allows flexible operation it enables the system to be read from almost any angle.
Includes UKAS Volume calibration for Part F Building Regulation testing
Features
Standard supply comprises of:-
- Instrument
- AT-242 solid hood designed specifically for domestic ventilation systems
- Carry case
- Batteries and charger
- Calibration certificate
- PC software (DIFFiner) and 2GB SD card for the fast storage of data
- Manual
Accessories
- Fabric hoods 400 x 400 mm, 600 x 600 mm, 310 x 1234 mm and 310 x 1534 mm
- Fast charger
Technical
Measuring range 10 to 400 m3/hr, -15 to +70 °C and 0 to +95 % non condensing relative humidity
Measuring aperture size 250 mm x 250 mm
Accuracy ± 3 % of reading ±1 m3/h.