The AirSense Model 310 carbon dioxide sensor uses an advanced, non-dispersive infrared (NDIR) sensing system for quick, reliable CO2 response, says the company. The unit measures concentrations in parts per million (ppm) and provides a continuous reading of indoor levels. Output is via a 4- to 20-mA current loop or 0- to 10-V interface. A 0.4-in.-high LCD display option is offered for installations where local readings are desired. For direct control applications, the relay option can be configured to open or close above the setpoint and is easily adjusted in the field, the company says.

Digital Control Systems, Inc., 4701 S.W. Capitol Hwy., Portland, OR 97219; le@dcs-inc.net (e-mail); www.dcs-inc.net (website).

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• Digital Control Systems, Inc.