Sierra offers complete solutions for process automation. Flow control sensors for air, liquid and gas come with the following features: outputs 4-20 ma, relay, pnp/npn; monitors flow, excellent time response; used in chemical, petrochemical, waste disposal utilities and automotives, metal, steel and other process industries. The company also offers iso 9000 calibration services for temperature indicator controllers, temperature gauges, temperature transmitters; rtd thermometers, temperature scanners, flow transmitters, loop indicators, vacuum gauges, level transmitters, pressure switch, i/p converters, control valves, etc.
