SWITCHES, RELAYS & TRANSMITTERS - Orange Research - #1

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SWITCHES, RELAYS & TRANSMITTERS 26 www.orangeresearch.com Differential Pressure and Flow Electrical Details Switches, Relays and Transmitters • Order independently or with dial • Many safety ratings Orange Research differential pressure and flow instruments are available with switches, relays and transmitters to alert the user of process conditions or control process equipment at pre-set values. These electronics are offered independently or in combination with the dials. Switches: We offer hermetically sealed reed switches that come with or without enclosures, depending on the model. Choose from SPST, normally open or normally closed, and SPDT switches. The models with enclosures have many safety ratings to satisfy a variety of environments and markets. Select from NEMA-4X to Class 1, Division 1 or 2, or UL, CSA, CE, or ATEX ratings and many more. For complete safety ratings or certifications refer to our individual model Specifications Sheets available for downloading on our website. Most of our reed switches are field adjustable within the upper 70 or 80% of the full-scale range of the instrument, depending on the model. All switches are preset to the full-scale range unless another value is specified at the time of order placement.When two switches are used they can be set independent of each other. Ask about our High Voltage and High Temperature switches. Relays: Our relays are used in high-inductive circuits such as those incorporating solenoids or motors.We use a reed switch to actuate the relay at a prescribed value.This isolates the reed switch, protecting it from high current or voltage. Some models allow for two relays on one instrument. Transmitters: Our transmitters incorporate a Hall-effect sensor that transforms the movement of the differential pressure or flow sensor magnet into an electrical output. As conditions change the sensor magnet rotates the pointer (rotary) magnet. This rotation induces a change in output from the Hall-effect sensor that is proportionate to the differential pressure reading or flow rate. Every transmitter is capable of providing current or voltage output. The user simply selects the output required. Temperature compensation ensures that the output of the transmitter does not drift. Each transmitter can be installed as a two-wire (loop powered) or as a three- or four-wire connection. Most of the safety ratings of the switch enclosures also apply to the transmitters. Features 1516DS (relay) 1203PGS (with 2 SPST switches) 1203PGT (transmitter) 1201PGS (with 1 SPST switch)