Show products Duct Fan Ostberg’s duct fans feature an external rotor motor with a forward- or backwardcurved impeller. www.info.hotims.com/37994-642 2012 AHR Expo Interchangeable Tools Klein Tools’ interchangeable multi-bit screwdrivers and nut drivers feature a durable ratcheting mechanism, extended reach, and compact design. www.info.hotims.com/37994-673 Air Filter Clog Detector When the increase in differential pressure across the filter reaches a specified level. CleanAlert’s FILTERSCAN® air filter clog detector provides visual and audible alerts indicating that an air filter needs to be serviced. www.info.hotims.com/37994-534 Ventilation Meter The TSI VelociCalc® 9565 multifunction ventilation meter accurately measures air velocity, airflow, temperature, humidity, and pressure simultaneously. The parameters are presented on a graphic display with on-screen messages and instructions in customizable languages. www.info.hotims.com/37994-637 Pressure Regulation Valve The APR Control air-conditioning pressure regulation valve from Rawal Devices stabilizes humidity and temperature, eliminates excessive cycling, extends equipment life and reduces operating costs. www.info.hotims.com/37994-401 Metering Gateway Tridium’s Niagara Metering Gateway 1.0 is a Web-based metering management tool that allows users to network pulse or smart energy meters to facilitate the aggregation of data in Niagara-based or oBIX-compliant commercial energy management applications. www.info.hotims.com/37994-688 www.info.hotims.com/37994-8 S118 ASHRAE Journal January 2012