AIR VELOCITY SENSORS
BY E+E

EE51 Series

Miniature Air Velocity Switch for HVAC Applications

Air velocity switches of the EE51 series are compact devices for air velocity monitoring with an excellent price/performance ratio. With the adjusting screw on the sensing probe the threshold can be set between 2 m/sec and 12m/sec. The switching output is specified as an "open collector" output. For monitoring several ventilators it is possible to combine the EE51 outputs by means of a “wired or” - circuit.

The mode of operation is based on the hot film anemometer principle. Highest accuracy and outstanding long term stability are achieved by use of the innovative E+E thin film sensor elements. These sensors are more insensitive against dust and dirt than conventional anemometer methods and ensure highest reproducibility and reliability.

EE55 Series

Air Velocity Switch for HVAC Applications (390 - 3,900 ft/min)

The EE55 air velocity switch is designed for standard HVAC applications with a switching threshold between 2 and 20 m/s. 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 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 10 m (33 ft) to the relays unit and ensure high immunity to electromagnetic disturbances.

Low angular dependence and an extension tube allows cost-effective, easy positioning of the sensing probe in ducts with diameter between 50 and 630 mm (2" and 25"). For smooth plant start-up there is the possibility to set the delay time between 20 and 100 seconds.

EE56 Series

Air Velocity Switch for low velocity (40 - 390 ft/min)

EE56 air velocity switch is designed for special laminar flow and HVAC applications with a switching threshold between 0.2 and 2 m/s (40 - 390 ft/min). It uses a E+E thin film sensor working on the hot film anemometer principle. This has an outstanding accuracy at very low air velocity, which is not possible for conventional anemometers with commercial temperature sensors or NTC bead thermistors.

Moreover, the E+E sensor is much less sensitive to dust and dirt than all other anemometer principles. This means high reliability and low maintenance costs.

EE56 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 10 m (33 ft) to the relays unit and has high immunity to electromagnetic interferences.

Low angular dependence and an extension tube allows cost-effective, easy positioning of the sensing probe in ducts with diameter between 50 to 630 mm (2" to 25") and For smooth plant start-up there is the possibility to set the delay time between 20 and 100 seconds.

EE65 Series

Air Velocity Transmitter for HVAC Applications

EE65 air velocity transmitters are ideal for accurate ventilation control applications. They are operating on an innovative hot film anemometer principle. The E+E thin film sensor guarantees very good accuracy at low air velocity, which is not possible for conventional anemometers with commercial temperature sensors or NTC bead thermistors. Moreover, the E+E sensor is much more insensitive to dust and dirt than all other anemometer principles. This means high reliability and low maintenance costs.

EE65 series are available with current or voltage output, the measuring range and the response time can be selected with jumpers by the user. Low angular dependence enables easy, costeffective installation. An integrated LCD display and a version with remote sensing probe are available.

EE66 Series

Air Velocity Transmitter for measurement down to “0” m/s

EE66 air velocity transmitter series are designed for high accuracy measurement of lowest air velocities. It is the ideal solution for laminar flow control and special ventilation applications. The E+E thin film sensor is operating on an innovative hot film anemometer principle. This guarantees excellent accuracy for air velocity down to almost 0 m/s, which is not possible for conventional anemometers with commercial temperature sensors or NTC bead thermistors. The E+E sensor is much more insensitive to pollution than all other anemometer principles. This increases reliability and reduces maintenance costs.

EE66 series are available with current or voltage output, the measuring range and the response time can be selected with jumpers by the user. Low angular dependence enables easy, cost-effective installation. An integrated LCD display and a version with remote sensing probe are available.

EE70 Series

EE70 air velocity and temperature transmitters are the ideal solution for high-end applications in the field of HVAC, clean rooms, ventilation, filter control and chemical hoods. The calculation of the air velocity, linearisation and full temperature compensation are carried out by a high performance micro-controller.

EE70 transmitters are using E+E thin film sensors operating on an innovative hot film anemometer principle. This guarantees excellent accuracy in the low range, even below 0.5 m/s, which is not possible for conventional anemometers with commercial temperature sensors or NTC bead thermistors.

Furthermore, the E+E sensor is much more insensitive to dust and dirt than all other anemometer principles, which increases reliability and reduces maintenance costs. EE70 Series are available with current or voltage output, an integrated LCD display and as a version with remote sensing probe. Very low angular dependence enables easy, cost-effective installation.

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