Air flow measuring instrument TMS3000

differential pressureHVACfor tunnel

Airflow measurement systems TMS 3000 are specifically designed for working under conditions prevailing in road tunnels. In the driving area there are only robust mechanical sensors made of stainless steel, the evaluation electronics is located in a separate control room (Version A and B). The high-resolution measurement allows continuous blower control and thus an effective optimization of fans and power consumtion.Our devices have been successfully used in the longest tunnels (e.g. the St.Gotthard Tunnel in Switzerland or Plabutsch in Austria) or shorter tunnels (e.g. University Tunnel in Düsseldorf, Germany). Measurement is based on high-precision differential pressure measure­ment (Pitot tubes) which results in accurate flow measurement of the air through the tunnel. The data from the separately mounted field transmitters are transferred digitally into the evaluation unit (RS 485). - Robust sensor mechanism without moving parts - Practically maintenance-free - Compact or field transmitter version - Measurement in longitudinal direction of tunnels - Continuous blower control is possible