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D-FL 220T

measurements flow speed, flow rate
flow direction
temperature
sample gas air
flow velocity -20 .. 20 / -10 .. 10 / 0 .. 10 / 0 .. 20 m/s
sample gas moisture 0 – 100% relative humidity
ambient temperature -25 to 55 °C
conformity EN 61 326-1 (2006)
EN 61 010-1 (2001)
RABT 2006
ASTRA guideline ventilation of road tunnels – 2008, V2.01
RVS 09.02.22 2007
remarks corrosion resistant against agressive gases, withstands lavation process in tunnels

Catalogue

bro_dfl220t_en

Mô tả

Measuring system for continuous evaluation of flow velocity and flow direction in tunnels. Ultrasonic sensors for tunnel ventilation control system. Reliable measurement across the tunnel profile. Two identical sensors alternately transmit and receive ultrasonic pulses. The system evaluates the transition times dependant on direction and calculates flow speed. D-FL 220T requires extremely low maintenance.

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