EE55

EE55 Series Air Velocity Switch for HVAC Applications The EE55 air velocity switch is designed for standard HVAC applications with a switching threshold between 2 and 20 m/s (400...4000ft/min). It is based on the innovative E+E thin film sensor working on the hot film anemometer principle. This element is distinguished by its outstanding accuracy over the whole working range and its approved long term stability. Moreover, the E+E sensor is much more insensitive to dust and dirt than other anemometer principles. This means high reliability and low maintenance costs. EE55 EE55 consists of an interchangeable sensing probe and a relay unit suitable for panel mounting. The electronics integrated in the sensing probe allow a cable length up to 10m (32.8ft) to the relays unit and ensure high immunity to electromagnetic perturbations. Low angular dependence and an extension tube allows cost-effective, easy positioning of the sensing probe in ducts with diameter between 50 and 630mm (1.9 and 24.8”). For smooth plant start-up there is the possibility to set the delay time between 20 and 100 s. Typical Applications HVAC control environmental control Features compact case size interchangeable sensing probe easy setting of threshold and preset time remote sensing probe up to 10m (32.8ft) easy electric wiring easy installation Working Principle The sensing probe, which can be supplied with up to maximum 10m (32.8ft) cable, gives a signal to the relay module which is proportional to...