YT1000R+PTM(external) Electro Pneumatic Valve Positioner
The YT-1000R with external PTM is an electro pneumatic valve positioner designed for the operation of pneumatic rotary valve...
What This Model Does
The YT-1000R with external PTM is an electro pneumatic valve positioner designed for the operation of pneumatic rotary valve actuators. It operates from a DC 4 to 20 mA analog output signal or split range signals delivered by an electrical controller or control system. Unlike an electro pneumatic converter alone, this positioner continually corrects deviation between the input signal and actual valve stroke caused by actuator load changes, such as front and rear differential pressure forces. Fitted with an external position transmitter module, it provides a form fit and function replacement for plants running YTC pattern rotary positioners.
| Model | YT-1000R+PTM (external) |
|---|---|
| Type | Electro pneumatic valve positioner with external PTM |
| Actuator compatibility | Pneumatic rotary valve actuators |
| Input signal | DC 4 to 20 mA, split ranges available |
| Feedback type | Cam and lever feedback with external position transmitter module |
| Mounting hardware | Three M5 x 20 screws to plate, M10 x 15 screws to actuator yoke |
| Housing colours | Black, blue, yellow and other colours painted to order |
| Warranty | 18 months |
Why Buyers Specify This Model
- Closes the position loop on rotary actuators to overcome process load and differential pressure deviations
- Converts an electrical analog control signal directly into a pneumatic driving signal for rotary valves
- Accepts split range inputs so multiple control valves can be sequenced from one controller channel
- Corrects stem travel deviations that an electro pneumatic converter without mechanical feedback cannot resolve
- Standard YTC rotary mounting profile allows direct replacement without modifying the existing actuator mounting plate
- Allows position status to be reported back to the upper control system via the external transmitter module
- Matches existing plant spare parts inventory for fast turnaround during plant maintenance
Problems It Solves
- Valve stroke deviates from the control signal under changing process differential pressures
- Standalone electro pneumatic converter cannot correct for actuator load changes
- Original brand positioner faces long lead times during critical plant maintenance shutdowns
- Rotary actuator needs both closed loop positioning and electrical travel feedback to the DCS
- Split range rotary control loops requiring precise zero and span setting across two valves
Application Scenarios
- Pneumatic rotary actuator on a process line experiencing valve position deviation due to differential pressure
- Rotary control valve operating on split range control sequenced from a single analog output
- Replacing a failed or worn YTC pattern rotary positioner during scheduled plant maintenance
- New pneumatic rotary valve assembly requiring an electro pneumatic positioner with position feedback
- Plant upgrade replacing standalone electro pneumatic transducers with closed loop positioners on rotary valves
Who It Is For
- Plant instrument technicians servicing pneumatic rotary control valves
- Valve and actuator OEMs assembling rotary valve packages under their own branding
- EPC engineering contractors sourcing valve automation accessories for plant projects
- Instrumentation distributors maintaining stock of YTC pattern positioners for local plants
- Trading companies supplying replacement field instruments to process facilities
Technical Features
- Operates pneumatic rotary valve actuators from DC 4 to 20 mA analog control signals
- Compatible with split range signal configurations from controllers or DCS systems
- Internal feedback mechanism with cam and lever corrects actuator load deviations
- External position transmitter module for position reporting to the control system
- Mounting base designed for secure attachment via mounting plate with three M5 screws
- Integrated feedback pin and cam channel arrangement for quarter turn rotary motion
Materials and Construction
- Cast aluminium alloy housing with painted protective finish
- Internal lever cam and feedback pin mechanical components
- Mounting bracket and threaded fasteners in steel
- Full material and finish breakdown is given in the datasheet PDF
Dimensions and Connection Detail
Reference image published with this model on the original catalogue. Confirm critical dimensions against the datasheet before machining a bracket.
Manufacturing and Quality Control
Every unit is calibrated and stroke tested before it is packed. We can film or photograph your units in the sample room or warehouse before they ship.
Manufacturing Steps
Housing casting and precision machining
Torque motor and pneumatic relay assembly
External position transmitter module integration
Feedback cam and lever alignment
Zero and span calibration under instrument air supply
Housing surface painting in specified customer colour
Carton packaging and final dispatch inspection
Quality Control
- Every positioner is calibrated and stroke tested prior to packaging
- Real product photos and warehouse video inspections available upon request
- Defective units covered by the 18 month warranty are replaced based on photo or video evidence
- Replacement units ship with the next order or via the fastest method for urgent down situations
Customisation Options
- Housing painted to customer requirement in black, blue, yellow or custom colours
- Custom nameplate and company logo printing
- Carton and custom packaging solutions for distributors and OEMs
- Newly designed shape modules developed to buyer drawings
- Positioner supplied with supporting pilot valves or limit switch boxes
How It Compares With the Alternatives
| Electro pneumatic converter (I/P transducer) | A converter converts signal to air pressure but cannot correct stroke deviations caused by valve differential pressure |
|---|---|
| YT1000L valve positioner | The YT-1000L is built for linear stem actuators while the YT-1000R is built for quarter turn rotary actuators |
| Digital smart positioner | Smart positioners add digital bus communications while the YT-1000R provides lower cost analog DC 4 to 20 mA control |
| Standard YT1000R without PTM | The external PTM version adds an external position transmitter to communicate valve travel back to the upper control system |
Fitting and Setting Up This Model
General field procedure. Always follow the datasheet for the exact calibration sequence and any hazardous area requirements.
Open the positioner case and fasten the mounting plate using three M5 x 20 screws through the casing holes
Connect the positioner mounting plate to the actuator yoke using two M10 x 15 screws at the desired position
Release the adjustment nut on the stem and position the feedback brace plate between the pointer and connecting nut
Insert the feedback connecting pin member into the positioner feedback cam dry open channel
Ensure the lever cam sits in a horizontal position when the valve is at 50 percent position
Connect clean instrument air supply piping and wire the DC 4 to 20 mA signal observing polarity
Calibrate the zero and span settings across the full stroke or split range as required by the control loop
YT1000R+PTM(external) Electro Pneumatic Valve Positioner FAQ
What is the lead time for this positioner?
Regular quantities normally ship in 2 to 3 days from stock. Large orders require 7 to 10 days.
Does this unit fit rotary actuators currently using YTC positioners?
Yes. It uses the standard YTC rotary mounting profile with three M5 screws to the plate and M10 screws to the actuator yoke.
What makes this positioner different from an I/P transducer?
An I/P transducer only converts electrical signal to air pressure. This positioner reads mechanical feedback and corrects valve deviation caused by differential pressure.
Can we purchase these positioners under our own brand colour and logo?
Yes. We provide OEM service including custom housing paint in black, blue, yellow or other colours, plus custom nameplates and packaging.
How does the external PTM function?
The external position transmitter module reads the rotary valve stem position and sends an electrical position feedback signal back to your control system.
What is your warranty policy if a unit fails on site?
We provide an 18 month warranty. We replace faulty units upon reviewing photo or video evidence, shipping the replacement with your next order or immediately if urgent.
Can I inspect the positioner before shipment?
Yes. Real product photos and videos can be taken in our sample room or warehouse on request prior to dispatch.
Applications Cases and Guides
Where It Is Used
Related Case Photos
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Get A Price on This Model
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