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FISHER™ 846

Technical Parameters Parameter Specification Model Fisher™ 846 Type Two-Wire Electro-Pneumatic Transducer (I/P) Input Signal 4-20 mA DC (Two-wire) Output Signal 3-15 psig (0.2-1.0 bar); other ranges available. Power Supply 24 V DC nominal (Typically operates on 12-30 V DC loop power) Supply Air Pressure 20 to 60 psig (1.4 to 4.1 bar), clean and dry. Air Consumption (No Load) Typically 0.25 SCFM (0.42 m³/hr) Accuracy ±0.5% of span Linearity & Hysteresis ±0.25% of span Ambient Temperature Range -40°F to 180°F (-40°C to 82°C) Enclosure Rating NEMA 4X (IP66) Mounting Panel mount, DIN rail, or direct to actuator.

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The Fisher™ 846 is a high-performance, electro-pneumatic transducer (commonly referred to as an I/P or E/P transducer). Its primary function is to accurately convert a standard analog electronic control signal (4-20 mA) from a controller or Distributed Control System (DCS) into a precise, proportional pneumatic output signal (3-15 psig) to operate a pneumatic control valve, actuator, or other pneumatic device. It serves as the critical link between electronic control systems and pneumatic final control elements.