HDI 2522 Choke Position Indicator System
Choke Position Monitoring
Also known as:
Linear Potentiometer, Rotary Potentiometer, Retractable Potentiometer, Choke Manifold Monitor



HDI 2522 Choke Position Indicator System
Choke Position Monitoring
Also known as:
Linear Potentiometer, Rotary Potentiometer, Retractable Potentiometer, Choke Manifold MonitorBuy
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The HDI 2522 Choke Position Indicator monitors choke valve position electronically with a long-life battery and supports remote displays.Sign in
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Executive Summary
The HDI 2522 Choke Position Indicator System is an electronic gauge that measures and displays the exact position of a choke valve in 1% increments, from fully closed to fully open. It features a larger 4-inch display with 1% resolution for clear visibility. Using sensors like linear, rotary, or retractable potentiometers, it adapts to various choke types common in oil and gas operations.
Battery-powered for up to one year, the system offers optional 4-20mA output for integration with control systems and can connect to slave displays for remote monitoring. This reliable, low-maintenance system enhances accuracy and safety by replacing traditional pneumatic indicators and supports advanced choke management needs.
Technical Specifications
Weight | 2lbs |
Case Material | Polycarbonate/PBT Alloy, impact modified, UV stabilized |
Resolution | 1% increments |
Power | Internal 3.6 Vdc battery pack |
Display | 3-digit digital, 0-100%, 1/8" scale linear analog bar graph |
Viewing Distance | Up to 15 feet |
Electronics Protection | Gasket seal |
Maximum Cable Length | 1,500 feet |
Operating Temperature | -40°F to 176°F (-40°C to 80°C) |
Calibration | Factory calibrated, matched gauge and potentiometer |
Features and Benefits
- Compatible with linear, rotary, and retractable potentiometers.
- Low battery indicator for continuous operation.
- Accurate and precise choke position monitoring improves operational control.
- Adaptable to multiple choke types and configurations for flexibility.
- Rugged, impact-modified polycarbonate/PBT alloy case, UV stabilized.
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Detailed Description
The HDI 2522 Choke Position Indicator System is a 4-inch solid-state electronic device used to precisely monitor the position of chokes in oil and gas operations. It provides position readings in 1% increments from fully closed (0%) to fully open (100%). The system supports a variety of choke types by interfacing with linear, rotary, or retractable potentiometers, making it adaptable to different choke designs commonly used in the industry.
This indicator eliminates the need for pneumatic air lines traditionally used for position sensing, improving reliability and reducing maintenance requirements. The gauge features a liquid crystal display (LCD) with both a numeric readout and an analog bar graph for quick visual interpretation of choke position. It includes a low battery indicator to ensure continuous operation.
The system is battery powered with a field-replaceable 3.6 Vdc power pack rated for one year of continuous operation. The internal battery powers the gauge electronics but not optional 4-20mA output loops. The 2522 supports up to two additional slave gauges for remote position displays, allowing flexible monitoring setups across control rooms.
Its robust, impact-modified polycarbonate/PBT alloy case is UV stabilized and sealed with gaskets to protect the electronics. The device operates within a temperature range of -40°F to 176°F (-40°C to 80°C) and is suitable for harsh oilfield environments.
Installation is straightforward, with recommended cable lengths up to 1,500 feet between the gauge and potentiometer, and customizable cable options available to fit specific site needs. Each system is factory matched and serialized, supplied with a signed calibration certificate, ensuring accuracy to within ±1% full scale.
Overall, the 2522 system provides a reliable, accurate, and low-maintenance solution for real-time choke position monitoring, enhancing operational control and safety in oil and gas production.
Engineering Data

