IP8100 Electro Pneumatic Valve Positioner
The IP8100 is an electro pneumatic rotary valve positioner designed for quarter turn pneumatic actuators.





What This Model Does
The IP8100 is an electro pneumatic rotary valve positioner designed for quarter turn pneumatic actuators. It receives a 4 to 20 mA set value signal from a controller and drives the actuator until the valve position matches the input command. An internal position sensor reads actual valve position, and an optional 4 to 20 mA DC output realizes remote position detection back to the control system. Built as an SMC type positioner interchangeable with the IP6000 series, it incorporates an external scale plate and enlarged pressure gauges for field readability.
| Model | IP8100 |
|---|---|
| Type | Electro pneumatic positioner, rotary type |
| Series | Series IP8000/8100 |
| Input signal | 4 to 20 mA DC |
| Output current | 4 to 20 mA DC for remote position detection |
| Interchangeability | Interchangeable with IP6#00 series |
| Position display | External scale plate |
| Pressure gauge | Enlarged diameter calibrated in MPa |
| Housing colour | Black, blue, yellow or painted to customer requirement |
| Warranty | 18 months |
Why Buyers Specify This Model
- Rotary design converts 4 to 20 mA electronic command signals into pneumatic output increments to drive rotary actuators
- Interchangeable with IP6000 series positioners so field units can be swapped without modifying existing actuator mountings
- Optional 4 to 20 mA DC output current provides remote position detection directly back to the supervisory control room
- Enlarged pressure gauge diameter allows operators to read actuator chamber air pressures easily from a distance
- External scale plate provides an immediate visual check of valve position directly on the positioner housing
- Dead zone management prevents actuator hunting when valve position matches the incoming current set point command
- Dual zone output uses continuous air delivery during large deviations and pulse delivery during fine valve adjustments
Problems It Solves
- Legacy IP6000 series positioners cannot be replaced without costly bracket redesigns or pipework modifications
- Control rooms lack real time verification of physical valve opening without a dedicated position transmission signal
- Small pressure gauges on existing positioners make local air supply troubleshooting difficult during plant rounds
- Actuator hunts continuously around the set point due to lack of an adaptive dead zone state
- Long manufacturer lead times on original brand positioners delay scheduled valve maintenance and turnaround tasks
Application Scenarios
- Rotary control valve installations requiring 4 to 20 mA command positioning on quarter turn pneumatic actuators
- Replacing worn or discontinued SMC IP6000 series positioners without modifying existing bracket configurations on the line
- Remote process monitoring applications where a 4 to 20 mA feedback signal must report actual valve position
- Plant retrofits where operators need visible external scale plates and large pressure gauges for walk by inspections
- OEM rotary actuator assemblies requiring private label branding and custom housing colours before delivery to site
Who It Is For
- Procurement engineers sourcing interchangeable SMC type rotary positioners for plant maintenance inventory
- Instrument technicians replacing legacy IP6000 series positioners on operating process piping skids
- Valve and actuator manufacturers looking for rotary positioners supplied under their own company brand
- Process instrumentation distributors stocking rotary electro pneumatic positioners for local industrial customers
- EPC project contractors requiring calibrated rotary positioners delivered against scheduled plant turnaround deadlines
Technical Features
- Microprocessor compares incoming 4 to 20 mA set value with position sensor feedback to adjust air traffic
- Continuous output delivered during high speed zone deviations for rapid movement toward target position
- Pulsed output delivered during low speed zone deviations for accurate final approach to target position
- Adjustable or adaptive dead zone state cuts air output once the valve reaches the designated set point
- External scale plate mounted on the housing provides clear visual confirmation of rotary valve opening
- Large diameter pressure gauges calibrated in MPa provide fast reading of supply and actuator output pressures
- Interchangeable physical footprint matching SMC IP8000 and IP6000 series pneumatic valve positioners
Materials and Construction
- Cast aluminium alloy housing with protective exterior paint finish
- External scale plate with visible degree markings
- Large dial pressure gauges with MPa indication scale
- Full material specifications are detailed on the product technical datasheet
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
Die casting and precision machining of positioner body and housing cover
Mounting internal microprocessor board, torque motor and position sensor assembly
Fitting enlarged diameter MPa pressure gauges and external scale plate indicator
Air bench calibration verifying continuous output, pulse zone and dead zone operation
Testing 4 to 20 mA remote output current tracking against rotary spindle travel
Custom exterior painting, brand nameplate marking and final carton packaging
Quality Control
- Every unit undergoes 4 to 20 mA signal stroke and pneumatic output verification before packing
- Photos and video of completed units can be taken in the sample room before dispatch
- Non conforming units under 18 month warranty are replaced on photo or video evidence
- Replacement units are normally dispatched with the next shipment or by express during emergencies
Customisation Options
- Housing painted in black, blue, yellow or custom colours according to customer requirements
- Customer logo and bespoke equipment tag marking applied to the positioner nameplate
- New shape module tooling and custom enclosure designs developed to engineering drawings
- Carton printing and internal packaging layouts customised for distribution or OEM presentation
- Supplied pre configured with matching pneumatic valve actuators or limit switch boxes
How It Compares With the Alternatives
| IP8000 lever type positioner | The IP8100 uses rotary feedback for quarter turn valves whereas IP8000 models use a linear lever linkage |
|---|---|
| Legacy IP6000 series positioners | The IP8100 provides direct dimensional interchangeability while adding enlarged gauges and an external scale plate |
| Basic positioners without transmitter | The IP8100 supports a 4 to 20 mA output current loop to transmit actual valve position back to the DCS |
| Direct actuator air loading | The positioner continuously compares signal against actual shaft position to eliminate error caused by process pressure |
Fitting and Setting Up This Model
General field procedure. Always follow the datasheet for the exact calibration sequence and any hazardous area requirements.
Mount the IP8100 onto the rotary actuator yoke and align the feedback shaft with the actuator drive pin
Connect clean and dry instrument air to the supply port and connect output lines to the actuator ports
Wire the 4 to 20 mA DC control command loop observing polarity at the internal terminal block
Wire the optional 4 to 20 mA DC output loop to the control system for remote position monitoring
Apply signal increments to verify smooth transition from continuous output to pulse zone and final dead band
Inspect the enlarged MPa pressure gauges to confirm supply pressure and actuator chamber differential
Check the external scale plate indicator to ensure local pointer matches actual open and closed stops
IP8100 Electro Pneumatic Valve Positioner FAQ
Is the IP8100 interchangeable with my existing IP6000 positioner?
Yes. The IP8100 is engineered to be interchangeable with the IP6000 series mounting footprint and piping connections.
Does this rotary positioner output a valve position feedback signal?
Yes. An optional 4 to 20 mA DC output current is available to realize remote position detection back to your DCS.
What is the standard delivery lead time?
Regular order quantities typically ship within 2 to 3 days from stock. Large project orders require 7 to 10 days.
Can we purchase these positioners under our own OEM brand name?
Yes. We provide OEM service including customer nameplates, custom housing paint colours such as blue or yellow, and custom cartons.
What warranty covers the IP8100 in process service?
All units carry an 18 month warranty. Defective units are replaced on photo or video evidence without returning the hardware.
Can I inspect real photos or videos of the positioners prior to dispatch?
Yes. Our sales team can provide real photos and operating videos filmed in the sample room or warehouse on request.
Applications Cases and Guides
Where It Is Used
Related Case Photos
Related Products


Get A Price on This Model
Tell us the quantity, the actuator it goes on and the destination port. We come back with price, lead time and confirmation that the model matches your valve.