Supplier Fisher 646 Electro-Pneumatic Transducer, Jakarta
DISTRIBUTORALATINDUSTRI.COM The Fishe 646 Electro-Pneumatic Transducer is an I/P (Current-to-Pressure) transducer designed to convert a standard 4–20 mA electrical input signal into a proportional pneumatic output pressure. It is commonly used in industrial process-control systems to interface electronic controllers with pneumatic control valves, actuators, and other pneumatic instruments.
Supplier Fisher 646 Electro-Pneumatic Transducer, Jakarta

The Fisher 646 is designed for reliable and accurate signal conversion, providing stable pneumatic output for applications where an electronic control signal must be used to operate pneumatic equipment.
Key Features
- Product Type: Electro-Pneumatic / I/P Transducer
- Input Signal: 4–20 mA DC
- Output: Proportional pneumatic pressure
- Function: Converts electrical current into pneumatic pressure
- Application: Pneumatic control valves and actuators
- Control Compatibility: PLC, DCS, electronic controllers, and other 4–20 mA control systems
- Design: Compact and rugged industrial construction
- Performance: Designed for stable, accurate, and responsive pneumatic signal output
- Installation: Suitable for industrial process-control applications
- Maintenance: Designed for straightforward installation, adjustment, and servicing
Operating Principle
The Fisher 646 receives a 4–20 mA DC input signal from an electronic control system. The internal electro-pneumatic mechanism converts the electrical signal into a proportional pneumatic pressure signal.
4–20 mA Electrical Signal → Fisher 646 I/P Transducer → Pneumatic Pressure Output → Control Valve/Actuator
As the input current changes, the pneumatic output changes proportionally, allowing the transducer to control the position or operation of pneumatic equipment.
Typical Applications
The Fisher 646 can be used in:
- Pneumatic control valve systems
- Pneumatic actuator applications
- Process control systems
- Oil & gas facilities
- Petrochemical and chemical plants
- Power generation
- Industrial automation
- Electronic-to-pneumatic signal conversion
- Remote pneumatic control applications
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