DWYER 475 MK III Digital Manometer

The Series 475-FM Mark III is housed in a durable extruded aluminum case with its solid state circuitry mounted on a tough fiberglass epoxy circuit board. To meet the most demanding applications and to provide stability of instrument reading, the 1 in. w.c. range is compensated for position sensitivity through the use of a unique patented dual sensor system. A standard 9 volt battery provides up to 100 hours of operation. Dual push pads on the front panel control on-off, auto zero, and pressure unit selection. No set-up or leveling. The large 0.42 " ; LCD display is easy to read, minimizing data collection errors. Units include a “ low battery” indicator. The pressure sensor used is a highly stable silicon piezoresistive device. Standard connections are dual sized for 1/ 8 " or 3/ 16 " I.D. vinyl or rubber tubing. Complete instructions are conveniently printed on rear of housing. Specifications Service: Air and compatible combustible gases. Wetted Materials: Call us at ( 888) 886-8185. Accuracy: ± 0.5% F.S., 60 to 78° F ( 15.6 to 25.6° C) ± 1.5% F.S. from 32 to 60° F and 78 to 104° F ( 0 to 15.6° C and 25.6 to 40° C) . Pressure Hysteresis: ± 0.1% of full scale. Pressure Range: English: 0-40.00 " w.c., Metric: 9.96 kPa. Maximum Pressure: 10 psig. Temperature Limits: 0 to 140° F ( -17.8 to 60° C) . Compensated Temperature Limits: 32 to 104° F ( -0 to 40° C) . Storage Temperature Limits: -4 to 176° F ( -20 to 80° C) . Display: 0.42 " ( 10.6 mm) 4 digit LCD. Resolution: See table below. Power Requirements: 9 volt alkaline battery. Battery not connected. Weight: 10.8 oz ( 306 g) . Connections: Two barbed connections for use with 1/ 8 " ( 3.18 mm) or 3/ 16 " ( 4.76 mm) I.D. tubing. Two compression fittings for use with 1/ 8 " ( 3.18 mm) I.D. x 1/ 4 " ( 6.35 mm) O.D. tubing for 475-7-FM & 475-8-FM only. Agency Approvals: FM, CE.