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IMI STI SA CL Electro Pneumatic Positioner 4 20mA Signal Balanced Forces Principle for Harsh Condition

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690-820$ per set
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IMI STI SA CL Electro Pneumatic Positioner 4 20mA Signal Balanced Forces Principle for Harsh Condition
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Caratteristiche
Specificazioni
Informazioni di base
Marca: IMI STI
Termini di pagamento e spedizione
Imballaggi particolari: imballaggio in cartone/cassa di legno
Tempi di consegna: 6-8 settimane
Termini di pagamento: T/T
Capacità di alimentazione: 800 insiemi all'anno
Descrizione di prodotto
IMI STI SA CL Electro Pneumatic Positioner 4-20mA Signal Balanced Forces Principle for Harsh Conditions
Product Overview

The IMI STI SA CL Electro-Pneumatic Positioner is a high-performance control device engineered for the precise positioning of pneumatic actuators. Utilizing the sophisticated Balanced Forces Principle, this unit converts a standard 4-20mA electronic input signal into a proportional pneumatic output. It is specifically built to deliver exceptional reliability and stability in the world's most harsh industrial conditions, where vibration, extreme temperatures, and corrosive atmospheres are constant challenges.

Key Features
  • Balanced Forces Principle: Ensures maximum stability and resistance to mechanical vibrations, providing high-fidelity control even in turbulent environments.
  • High Precision: Offers superior sensitivity and linearity for critical process control applications.
  • Rugged Construction: Features a heavy-duty housing designed to withstand extreme temperatures, humidity, and corrosive chemical exposure.
  • Low Air Consumption: Optimized internal pneumatic circuitry reduces operational costs and air supply demand.
  • Easy Calibration: Simplified zero and span adjustments allow for quick onsite commissioning and maintenance.
  • Universal Compatibility: Seamlessly integrates with various linear and rotary pneumatic actuators.
Technical Specifications
Parameters Specifications
Input Signal 4 - 20 mA DC
Input Resistance 250 ± 15 Ω
Air Supply Pressure 1.4 to 7.0 bar (20 to 100 psi)
Output Pressure 0 to 100% of Supply Pressure
Operating Temperature -20°C to +80°C (Extended ranges available)
Linearity Error < ± 1.0% F.S.
Hysteresis < 0.5% F.S.
Sensitivity < 0.2% F.S.
Air Connections 1/4" NPT (Standard)
Conduit Entry 1/2" NPT or M20x1.5
Applications
  • Oil & Gas: Control valves in refineries and offshore platforms.
  • Power Generation: Damper control and steam turbine systems.
  • Chemical & Petrochemical: Handling of aggressive fluids and high-pressure reactions.
  • Marine & Heavy Industry: Systems exposed to salt spray and high mechanical stress.
  • Pulp & Paper: Accurate consistency control in processing lines.
Frequently Asked Questions
Q1: How does the Balanced Forces Principle benefit my operation?
A: It significantly reduces the impact of external vibrations and fluctuations in air supply pressure, ensuring the valve remains at the exact setpoint without "hunting" or oscillation.
Q2: Is this positioner suitable for outdoor installation in coastal areas?
A: Yes. The SA CL series features a high-grade protective finish and sealed internals specifically designed to resist salt spray and high humidity.
Q3: Can this unit be used with both double-acting and single-acting actuators?
A: The SA CL is primarily designed for high-performance applications and can be configured for various actuator types. Please specify your actuator model when ordering for the correct mounting kit.
Q4: What maintenance is required?
A: Due to its robust design, maintenance is minimal. We recommend periodic inspection of the air filters and checking the supply air quality to ensure long-term reliability.
Related Products
Contact Us
For pricing, technical support, or customized mounting solutions, please contact our export department:
Contact Person: Sales Manager
WeChat / WhatsApp / Phone: +86 15116291548
Availability: 24/7 Technical Consultation
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Annie Dowson
United Kingdom Jan 8.2026
The Emerson AMS Trex we received is top quality – solid build, responsive touchscreen, and works perfectly with our HART and Fieldbus devices. It’s definitely made our commissioning and troubleshooting a lot more efficient. Also, big thanks to the seller – very professional, fast shipping, and they knew exactly what we needed. Super reliable supplier. Would absolutely buy from them again.
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Persona di contatto : Mr. Edward Zhao
Telefono : +8615000725058
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