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Available to buy or hire from BSRIA Instrument Solutions is the Observator DIFF powered air capture hood instrument complete with AT-242 hood, carry case, batteries and charger, calibration certificate and manual
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.
Standard supply comprises of:-
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.