Measuring positive, negative, and differential pressures of air or natural gas in the range of 0 to 100 in. wc (0 to 0.2489 kPa), the Model 475-000-FM Mark III handheld digital manometer weighs 12 oz (340 g) and is accurate to ±0.5% fs, says the manufacturer. The product is suitable for in-field monitoring and troubleshooting of hvacr systems, cleanrooms, and a variety of low-pressure pneumatic systems, and is safe for hazardous locations, Class I, Division I, Groups A, B, C, D, and T4, according to the company.
Dwyer Instruments, Inc., P.O. Box 373, Michigan City, IN 46361-0373; 219-879-8000; 219-872-9057 (fax); email@example.com (e-mail); www.dwyer-inst.com (website).