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Rosemount 3491

Rosemount 3491 Wall Mount Control Unit. The 3490 series of wall and panel mount control units provide comprehensive control functionality for any 4-20mA or HART compatible transmitter. THE 3490 SERIES FEATURES: • IS Power Supply to transmitter • 4-20mA / HART input • Isolated 4-20mA output • Five Control relays • Multi-function back lit display • Wall or panel mount • Pre-programmed linearization - volume and open channel flow. The 3490 series of wall and panel mount control units provide comprehensive control functionality for any 4-20mA or HART compatible transmitter. Mounted in a non-hazardous area, the 3490 provides a protected (IS) 24V dc power supply to a transmitter that may be installed in a hazardous area. A back-lit display gives clear visual indication of the measured value and status of all inputs and outputs. The 3490 is configured and interrogated using an integral 6 button keypad and an easy to navigate menu structure (page Accessories-4). Many popular configurations are “Wizard assisted”, enabling fast and accurate programming. The HART digital or 4-20mA analog signal from the transmitter may be offset, dampened, scaled, and linearized as required. A range of pre-programmed linearization algorithms are user selectable. Typical measurements include level, volume and distance measurement, as well as open channel flow measurement in wide range of flumes and weirs. The 4-20mA output signal may also be scaled to re-transmit all or just part of the input signal or calculated value. Five relays are provided and are fully field programmable to perform a wide variety of control, fault indication or alarm duties. VIEW SPECIFICATIONS