FOXBORO 823EP-IM4SB6KD-M Valve Position Transmitter

Description

FOXBORO 823EP-IM4SB6KD-M Valve Position Transmitter

Product Dimensions：

1. Product Description

Foxboro valve position transmitter is a precision field instrument for measuring and transmitting the actual stroke position of pneumatic control valves. It converts the mechanical valve travel into standard 4-20mA analog signal or digital bus signal, feeding real-time valve position back to DCS/PLC control system. It can be integrated together with Foxboro intelligent valve positioner (SRD991 / SRI986 series). The modular structure supports linear and rotary valve actuators, designed for continuous position monitoring in industrial process automation.

2. Product Parameters

• Output Signal: 4 ~ 20 mA analog signal; optional HART / FOUNDATION Fieldbus H1 / PROFIBUS-PA digital communication
• Measuring Range: Linear stroke 8 ~ 260 mm; rotary angle 0 ~ 95°
• Accuracy: ±0.5% of full scale
• Repeatability: ≤0.3% FS
• Hysteresis: ≤0.4% FS
• Housing Material: Die-cast aluminum with epoxy coating
• Protection Class: IP66 / IP67, NEMA 4X
• Ambient Temperature: -40℃ ~ +85℃
• Certification: ATEX, IECEx, FM, CSA intrinsically safe / explosion-proof; SIL3 safety capability
• Air Supply: 1.4 ~ 6 bar (for positioner integrated version)
• Mounting Standard: NAMUR, VDI/VDE 3845

3. Product Advantages

1. High measuring precision and stable feedback, effectively eliminate valve friction and dead zone interference.
2. Multi-protocol digital communication, compatible with most mainstream DCS systems for remote reading and configuration.
3. Built-in diagnostic function: monitor valve travel, temperature, actuator status, air supply abnormality, support predictive maintenance.
4. Rugged metal housing, anti-corrosion, anti-vibration, suitable for harsh industrial environment with moisture, salt spray and dust.
5. Quick auto-calibration function, one-button zero & span adjustment, reduce on-site commissioning time.
6. Flexible modular design, easy installation on linear and rotary actuators; optional limit switch modules.
7. Supports Partial Stroke Test (PST), critical for emergency shutdown valve safety verification.

4. Notes / Precautions

1. Select proper explosion-proof version according to hazardous zone classification, strictly follow local explosion safety regulations during installation.
2. Keep instrument housing intact; do not open the cover when power is on in explosive atmosphere.
3. Use clean, dry and filtered instrument air; oil, water or dust in air source will damage internal components.
4. Mount the unit firmly, avoid excessive mechanical vibration and impact.
5. Complete calibration after installation, re-calibration is required after disassembly or actuator replacement.
6. Wiring shall comply with intrinsic safety wiring rules; separate signal cable from high-power cables to avoid interference.
7. Regular maintenance: check air filter, sealing condition and cable connection periodically.

5. Product Applications

• Oil & Gas, Petrochemical plants: control valve position monitoring for pipeline, refining and reaction process
• Power Generation: steam & water circulating control valves
• Pulp & Paper industry
• Pharmaceutical & Food and Beverage process control
• Water & Wastewater treatment
• Chemical manufacturing, mining and metallurgy
• Safety instrumented system (SIS) for emergency shutdown valves

Payment: Bank of Chicago, Bank of Singapore

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