The Series 674 differential pressure transmitter facilitates quick field selection of up to three direct and three compound pressure ranges for measuring airflow, building or room pressure, duct pressure, and filter drop, says the company. Eight models are offered, four with NEMA 4X (IP56) enclosures and four configured for panel mounting. Features include accuracy of ±1% full scale, non-interactive zero and span adjustment (±15%), temperature compensation, and short circuit and reverse polarity protection, the company says.
Dwyer Instruments, Inc., P.O. Box 373, Michigan City, IN 46361-0373; 219-879-8000; 219-872-9057 (fax); firstname.lastname@example.org (e-mail); www.dwyer-inst.com (website).