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ITT Conoflow GC31/GC34 Positioner

The Commandaire® Positioner is a top mounted, integral positioner used with piston or spring and diaphragm actuators. Utilizing a force balance principle this unit provides proportional positioning of an actuator with stroke lengths up to 10”. The completely enclosed design eliminates exposed levers or linkages making the Commandaire® Positioner rugged and reliable.

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Samson 3730 Positioner

Samson’s 3730 Electropneumatic Positioner can be used to position a valve with 0.14”- 7.8” linear travel or 24-100 degree rotary applications.  Five versions are available to provide 4-20 mA, HART, PROFIBUS-PA and FOUNDATION Fieldbus communication protocol.  This versatile unit also can operate with an external position sensor to physically remove the positioner from the standard valve stem location.

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Samson EXPERT and EXPERT+ Positioners

EXPERT and EXPERT+ are enhanced firmwares designed for predictive, status-oriented maintenance on control valves with pneumatic actuators. All diagnostic functions are completely integrated into the postioner. EXPERT and EXPERT+ enable operators to conveniently view and edit data in the TROVIS-VIEW and FDT/DTM engineering tools, which makes operation easy to learn.

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Samson 3767 Positioner

Samson’s 3767 Electropneumatic Positioner can be used to position a valve with 0.3”- 4.7” linear travel or 90-degree rotary applications.  It is offered in both 3-15 PSIG and 4-20 mA versions.   It has both single acting and double acting capabilities for attachment to pneumatic control valves.

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Samson 3731-3 Positioner

Samson’s 3731 Electropneumatic Positioner provides the features of the standard HART and FOUNDATION Fieldbus 3730 unit in an Explosion-proof version. It has both single acting and double acting capabilities for attachment to pneumatic control valves.

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Samson 4763 Positioner

Samson’s 4763 is a general-purpose single acting positioner for attachment to pneumatic control valves.  The positioner can have 4-20 mA, 1-5 mA, or 3-15 PSIG input and can control from 0.3” to 3.5” of linear stem travel.  The unit is suitable for normal or split-range applications.

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Worcester AF17 Positioner

The Worcester AF17 Positioner is a unique circuit board specifically designed for quarter-turn operation with 100% solid-state circuitry, an anti-hunting control, and is direct or reverse-acting. The AF17 features dynamic electronic braking with electromechanical braking as an option and an LED calibration check.

DataFlo C Additional Information
 
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Worcester DataFlo Positioners

The Worcester DataFlo C combination based PID single loop controller and final control element bring control to the point of use. This rugged compact package simplifies wiring requirements by directly accepting analog, RTD or thermocouple inputs. All the parameters are easily programmed through the local keypad or via a simple RS-485 computer interface.

The Worcester DataFlo P Positioner, controlled by a 4-20 mA analog signal from a PLC or digitally from a computer, gives you calibration, monitoring and diagnostics both onsite or from a control room computer.

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Worcester PULSAIR III Positioner

The Worcester PULSAIR III is a digital positioner designed for controlling modulation valves. The positioner can be used with single- or double-action actuators for either rotary or linear movement. The PULSAIR III can be equipped with modules for feedback, limit switches, and a pressure gauge block. The modules for feedback and limit switches can contain 4-20 mA feedback and mechanical switches, reed switches, or inductive sensors.