The Series 634S pressure transmitter uses an isolated piezoresistive pressure sensor to provide positive pressure readings of air and non-corrosive gases or liquids with ۫ percent FS accuracy. Stability for the CE-approved instrument is ۫ percent FS/year. The series is available in 10 field-adjustable models covering ranges from as low as 0 to 10 psi to as high as 6,000 psi.

These lightweight transmitters are configured for two-, three-, or four-wire operation, providing a standard 4 to 20 mA output signal. Zero-and-span controls are protected, but designed to be easily accessed in the instrument's side housing.

The unit's glass-filled nylon case has integral holes for easy surface mounting. Its cable gland accepts 0.10 to 0.25 in. ID round cable. Maximum pressure for each model is 1.5 times its range.