These MEMS sensors detect the change of airflow to send out a warning signal when the filter should be changed.

When one considers the potential that a clogged filter can shut down an entire computer server, clean room or piece of HVAC equipment, MEMS flow sensors from Omron provide a cost effective method to keep these systems running at peak efficiency. An air velocity sensor used for clogged filter detection can be used to trip a warning signal indicating the need for filter replacement when the flow drops below a given threshold. Also an upper threshold could be set for a missing filter alert.

MEMS flow sensors have the ability to measure air velocity and flow rates. The D6F-W01A1 measures a flow range of 0 to 1 m/s and the D6F-W04A1 a range of 0 to 4 m/s. Both provide an amplified, temperature compensated output signal a guaranteed ±5% full-scale repeatable accuracy. The economical D6F-V measures a flow range of 0 to 3 m/s with a ±10% full-scale repeatable accuracy. The D6F-V output is amplified but is not temperature compensated.  Parts are individually calibrated at the factory for optimal performance. 

Available in two models these MEMS sensors measure air velocity, which can be used to signal an alert to change a dirty filter or install a missing one, thus saving costly downtime or repairs in a variety of applications. ADVERTISEMENT

To enable the sensors to perform in a dust-filled environment, a unique dust resistant design inhibits both contamination of the sensor chip and build up of dust particles that would restrict the flow path and impair the accuracy. This housing design is based on a centrifugal principle to segregate particulates from the air stream. Most particulates cannot pass through the sensing area and are discharged through the exhaust route. This patented Dust Segregation System (DSS) is 95% - 99% efficient in a variety of applications.

The D6F-W series operates on a supply voltage of 10.8 to 26.4 VDC while consuming just 15 mA maximum. Their output signal is 1 to 5 VDC (non-linear) with load resistance of 10k Ohms minimum. The 9H x 20D x 39L (mm) case is composed of molded thermoplastic and connection is made through a three-pin connector. The D6F-W operates from –10 to +60ºC with no ice or condensation.

An illustration of the patented Dust Segregation System (DSS) which is over 99% efficient (see video clip above).

The D6F-V series operates on a supply voltage of 3.15 to 9.45 VDC while consuming just 15mA maximum. Their output signal is analog 0.5 to 2 VDC (non-linear) with load resistance of 10k Ohms minimum. The compact 8H x 14D x 24L (mm) case is composed of molded thermoplastic and connection is made through a three-pin connector. The D6F-V operates from –10 to +60ºC with no ice or condensation. 

Samples and a complete set of technical data are available by contacting Omron Electronic Components.

For additional information please contact Omron Electronic Components at 847-882-2288, by emailing components@omron.com, or by visiting www.components.omron.com.