Description
E69F-TI2-JRS
Manufacturer: Foxboro (Schneider Electric / Invensys)
Part Number: E69F-TI2-JRS
Product Type: Field Mounted Current-to-Pneumatic (I/P) Transducer
Product Overview
The E69F-TI2-JRS is a field-mounted I/P converter of Foxboro E69F series. It converts a 4–20mA DC analog control signal from DCS or PLC into a proportional pneumatic output pressure, to drive pneumatic control valves, actuators and positioners. This explosion-proof field unit is widely deployed in hazardous process areas for petrochemical, chemical and refining plants.
Technical Specifications
| Parameter | Value |
|---|---|
| Input Signal | 4–20 mA DC, 170 Ω impedance, direct/reverse action configurable |
| Pneumatic Output | 3–15 psi (20–100 kPa / 0.2–1.0 bar) |
| Supply Air | 20–100 kPa regulated instrument air |
| Enclosure | Explosion-proof threaded cover housing |
| Construction Code Breakdown | T=Explosionproof housing; I=4-20mA input; 2=3-15psi output; J=integral explosionproof junction box; R=adjustable filter regulator without gauge; S=supply & output pressure gauges |
| Mounting | Field pipe / bracket mount |
| Weight | 2.3 kg |
| Operating Temperature | -40 °C ~ +85 °C |
| Hazardous Area Certification | Explosion-proof for Class I Div 1 / ATEX hazardous locations |
| Air Medium | Dry, clean, oil-free instrument air |
Key Features
- Explosion-proof enclosure design, suitable for installation directly in explosive gas process zones.
- Integral filter regulator built-in, cleans and stabilizes instrument air supply locally.
- Equipped with both supply air gauge and output pressure gauge for on-site visual inspection and calibration.
- Supports direct or reverse acting characteristic, flexible matching to valve fail-safe requirements.
- High vibration resistance, stable conversion accuracy under harsh field environments.
- Standard I/P function, compatible with Foxboro I/A Series and most mainstream DCS control systems.
Application Scenarios
- Petrochemical refining plant control valve actuation
- Chemical plant continuous process loop control
- Oil & gas pipeline and terminal modulating valves
- Power plant flue gas and auxiliary fluid control loops
- Hazardous area process control requiring pneumatic actuators
Installation & Maintenance Notes
- Use clean, dry, oil-free instrument air; moisture or oil contamination will damage internal nozzle/flapper components.
- Install unit close to control valve to minimize pneumatic transmission delay.
- Perform zero and span calibration after installation and during routine plant shutdown.
- Keep the vent port free of blockage by dust or debris.
- Verify explosion-proof seal and conduit fitting integrity in hazardous classified locations.
- Check gauge readings periodically to detect regulator drift or air supply degradation.
FAQ
Q: What does the suffix JRS stand for in E69F-TI2-JRS? A: J = integral explosionproof junction box; R = built-in adjustable filter regulator (no gauge); S = supply and output pressure gauges fitted.
Q: What input and output signal does this I/P transducer use? A: 4–20mA DC electrical input, 3–15 psi pneumatic output for valve actuators.
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