Orange Research”s liquid and air & gas flow transmitters are designed for applications involving high line pressures from 1,500 to 5,000 PSIG. With durable variable-area flow sensors, these models cover liquid flowrates from zero to 30 GPM (zero to 115 LPM) and air & gas flowrates from zero to 100 SCFM (zero to 850 SLPM). The transmitters incorporate solid-state, Hall-effect sensors to transform flow measurements into electrical outputs. Every transmitter is capable of providing voltage, current, frequency, or RS 232 output. The user simply selects the output desired. Built-in temperature compensation is designed to ensure that the output of the transmitter does not drift. Each transmitter can be installed as a three- or four-wire connection. Safety ratings include Nema-4X, IP65, IP66, UL, and ATEX. The flow transmitters also are available with optional dials for local readout. Dials can include plastic or shatterproof lenses, liquid filling, red arc, multicolor arc, and dual scales. O-ring options include Viton, EPDM, fluorosilicone and Teflon. Flow transmitters are installed in-line and can be oriented horizontally or vertically.