Friday, 18 September 2026

HDI 2204220 3014 501 FD Choke Position Indicator MS3106E14S for Hazardous Locations

 In hazardous industrial environments where flammable gases, vapors, or dusts may be present, every component must meet rigorous safety standards to prevent ignition and ensure personnel protection. The HDI 2204220 3014 501 FD Choke Position Indicator is a specialized instrument engineered specifically for such demanding applications, providing accurate position feedback in Class I hazardous locations while maintaining the highest levels of safety and reliability.

Position indicators play a vital role in process control systems by providing real-time feedback on the position of valves, chokes, dampers, and other mechanical equipment. In oil and gas production, petrochemical processing, and other industries handling flammable materials, this position information is essential for safe and efficient operation. The HDI Instruments 2204220 3014 501 FD meets this critical need with explosion-proof construction rated for Class I, Groups A, B, C, and D hazardous environments, making it suitable for the most dangerous industrial locations.

At Auto2mation Pvt. Ltd., we specialize in supplying certified industrial equipment for the most challenging applications. The HDI 2204220 choke position indicator is offered in new condition with our standard 30-day warranty and free worldwide shipping. Our technical team understands the requirements of hazardous location equipment and can assist you in selecting the right position sensing solutions for your safety-critical applications.



Key Features & Specifications of the HDI 2204220 Choke Position Indicator

The HDI 2204220 3014 501 FD Choke Position Indicator incorporates safety-certified design and robust construction to deliver reliable position feedback in hazardous environments. Here are the key features that make this instrument a trusted choice for safety-critical applications:

  • Class I Hazardous Location Rating: Certified for Class I, Groups A, B, C, and D hazardous locations, covering the full range of flammable gas and vapor environments from acetylene (Group A) to propane (Group D).
  • High Ambient Temperature Rating: Designed for maximum ambient temperatures up to 60 degrees Celsius, ensuring reliable operation in hot industrial environments and tropical climates.
  • MS3106E14S Connector: Equipped with a standard MS3106E14S military-style connector that provides secure, vibration-resistant electrical connections suitable for industrial and offshore applications.
  • Choke Position Sensing: Specifically designed to monitor the position of choke valves and similar flow control devices, providing essential feedback for process control and safety systems.
  • Explosion-Proof Construction: The rugged housing is designed to contain any internal explosion and prevent ignition of the surrounding hazardous atmosphere, meeting the stringent requirements of explosion-proof equipment standards.
  • Trusted Manufacturer: Manufactured by HDI Instruments, LLC, a specialist in hazardous location instrumentation with extensive experience in oilfield and petrochemical applications.

Applications & Use Cases

The HDI 2204220 Choke Position Indicator is engineered for critical position sensing applications in hazardous environments where safety certification is mandatory. Its primary application areas include:

Oil and Gas Wellhead Control

On oil and gas production wellheads, choke valves regulate the flow of hydrocarbons from the reservoir to surface processing facilities. The HDI position indicator provides real-time feedback on choke valve position, enabling operators to monitor and control production rates while maintaining safe operating pressures. The Class I hazardous location rating is essential in these environments where natural gas and crude oil vapors are routinely present.

Petrochemical Processing Plants

Refineries and petrochemical facilities handle a wide range of flammable gases and liquids that require precise flow control. The HDI choke position indicator monitors control valve positions throughout these facilities, providing the process control system with essential feedback for safe and efficient operation. The Groups A, B, C, and D rating covers all flammable materials commonly encountered in petrochemical processing.

Offshore Platform Safety Systems

Offshore oil and gas platforms operate in some of the most hazardous environments on Earth, combining flammable hydrocarbons with corrosive salt air and extreme weather conditions. The HDI 2204220's explosion-proof construction and robust connector make it suitable for these demanding marine applications where equipment reliability is literally a matter of life and death.

Gas Distribution and Storage Facilities

Natural gas processing plants, LNG facilities, and gas storage terminals require precise flow control and position monitoring at every stage of the distribution chain. The HDI position indicator provides the certified safety and accurate feedback these critical infrastructure facilities demand.

Chemical Processing and Specialty Gases

Chemical plants producing or handling hydrogen, acetylene, ethylene, and other highly flammable gases benefit from the HDI indicator's Class I, Group A rating, which covers even the most easily ignitable gas atmospheres. The 60-degree Celsius ambient temperature rating ensures reliable operation in hot process environments.

Why Choose the HDI 2204220 Choke Position Indicator

When specifying position sensing equipment for hazardous locations, safety certification and proven reliability are non-negotiable requirements. The HDI 2204220 3014 501 FD offers several compelling advantages for these critical applications:

Comprehensive Hazardous Location Coverage

The Class I, Groups A, B, C, and D rating provides the broadest coverage of flammable gas environments. Group A covers acetylene, Group B covers hydrogen, Group C covers ethylene and cyclopropane, and Group D covers propane, butane, and natural gas. This comprehensive rating means a single HDI indicator model can be deployed across virtually any hazardous location without concern for gas group compatibility.

High Temperature Tolerance

The 60-degree Celsius maximum ambient temperature rating exceeds that of many competing instruments, making the HDI 2204220 suitable for installations in hot climates, near process equipment, and in enclosed spaces where heat buildup may occur. This temperature capability reduces the need for auxiliary cooling or specialized installation arrangements.

Military-Grade Connector Reliability

The MS3106E14S connector is a proven military specification connector that provides exceptional resistance to vibration, moisture, and mechanical stress. In industrial and offshore environments where equipment is subjected to constant vibration and rough handling, this connector ensures reliable electrical connections that won't loosen or fail over time.

Specialized Application Expertise

HDI Instruments specializes in position sensing equipment for hazardous location applications. This focused expertise means their products are designed from the ground up for the specific challenges of oilfield, petrochemical, and industrial safety applications, rather than being adapted from general-purpose instrumentation.

Compatibility & Integration

The HDI 2204220 Choke Position Indicator is designed for integration with industrial control systems and safety instrumented systems (SIS) in hazardous location installations. Key integration considerations include:

  • MS3106E14S Connector Interface: The military-specification connector provides a standardized connection point compatible with industrial cable assemblies and junction boxes rated for hazardous location use.
  • Analog or Digital Output: The position indicator provides an electrical signal proportional to choke valve position that can be interfaced with PLCs, DCS systems, SCADA platforms, and safety shutdown systems.
  • Explosion-Proof Enclosure Compatibility: The instrument housing is designed for installation in explosion-proof conduit systems and junction boxes that meet NEC and IEC standards for hazardous location wiring methods.
  • Safety Instrumented Systems: The HDI indicator can be integrated into SIL-rated safety instrumented systems where choke valve position monitoring is required as part of a safety function.

Maintenance & Support

The HDI 2204220 Choke Position Indicator is designed for long service life with minimal maintenance requirements in demanding industrial environments. Periodic inspection of the enclosure and connector for physical damage, corrosion, or loosening is recommended as part of routine maintenance programs. All maintenance on hazardous location equipment must be performed by qualified personnel in accordance with applicable safety standards and local regulations.

At Auto2mation, we provide full support for the HDI 2204220 position indicator, including our standard 30-day warranty and free worldwide shipping. Our technical team can assist with product selection questions, installation guidance, and integration recommendations. We understand the critical nature of hazardous location equipment and are committed to helping our customers maintain the highest levels of safety and compliance in their operations.

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Explore our comprehensive inventory of industrial automation, hazardous location equipment, and marine technology products. Here are related items that may complement your HDI position indicator installation:


Hatteland JH 20T16 KMP-A1 20.1 Inch TFT Industrial Display 115–230VAC for Marine Applications

 Industrial displays are the critical interface between complex automation systems and the operators who manage them. In demanding marine and industrial environments, these displays must deliver exceptional visibility, robust construction, and reliable performance under challenging conditions. The Hatteland JH 20T16 KMP-A1 Display represents the pinnacle of industrial display technology, combining a large 20.1-inch TFT screen with rugged construction specifically engineered for maritime, offshore, and heavy industrial applications.

Key Features & Specifications of the Hatteland JH 20T16 KMP-A1 Display

Applications & Use Cases

Ship Bridge and Navigation Systems

Offshore Platform Control Rooms

Industrial Process Control

Dynamic Positioning Systems

Marine Automation and Alarm Monitoring

Why Choose the Hatteland JH 20T16 KMP-A1 Display

Norwegian Engineering Excellence

Dual-Voltage Flexibility

Large Screen for Complex Visualizations

Proven Reliability Track Record

Compatibility & Integration

Maintenance & Support

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Tuesday, 15 September 2026

Hach 51811–03 Portable LDO Probe with 1M Cable for Dissolved Oxygen Measurement

 Accurate measurement of dissolved oxygen is critical across numerous industries, from wastewater treatment and environmental monitoring to food and beverage production and pharmaceutical manufacturing. The Hach 51811–03 Portable LDO Probe represents the gold standard in portable dissolved oxygen sensing technology, offering exceptional accuracy, rapid response times, and the rugged reliability that Hach Company has built its reputation on for over 80 years.

This innovative LDO (Luminescent Dissolved Oxygen) probe from Hach Company Chicago utilizes advanced luminescence-based sensing technology to eliminate many of the maintenance challenges associated with traditional membrane-based dissolved oxygen sensors. Unlike conventional DO probes that require regular membrane replacement and electrolyte refilling, the LDO probe uses a luminescent sensor cap that provides stable, drift-free measurements with minimal maintenance requirements. This makes it an ideal choice for field applications, remote monitoring locations, and any environment where sensor reliability and reduced maintenance are priorities.

At Auto2mation Pvt. Ltd., we are committed to providing our customers with the highest quality analytical instrumentation and water quality monitoring equipment. The Hach 51811–03 Portable LDO Probe with 1-meter cable is offered in new condition, backed by our standard 30-day warranty and free worldwide shipping. Whether you are monitoring dissolved oxygen levels in an industrial process stream, conducting environmental water quality assessments, or ensuring compliance with regulatory discharge limits, this Hach LDO probe delivers the precision and dependability your application requires.

Key Features & Specifications of the Hach 51811–03 LDO Probe

The Hach 51811–03 Portable LDO Probe incorporates cutting-edge sensor technology and thoughtful engineering to deliver outstanding performance in dissolved oxygen measurement. Here are the key features that distinguish this probe from conventional DO sensors:

  • Luminescent Sensing Technology: The LDO probe uses advanced luminescence-based measurement principles that eliminate the need for membranes, electrolytes, and frequent calibration associated with traditional galvanic or polarographic DO sensors.
  • Portable Design: Engineered for field use with a lightweight construction weighing only 420 grams, making it easy to transport and deploy at multiple sampling locations.
  • 1-Meter Cable Length: The probe is equipped with a 1-meter cable that provides adequate reach for most portable measurement applications while maintaining signal integrity.
  • Reference Standard: Based on the proven 51811–01 design platform, ensuring compatibility with established Hach instrumentation and measurement protocols.
  • Part Number: 51811–03, a 3-meter LDO probe variant from Hach’s comprehensive dissolved oxygen sensor portfolio.
  • Trusted Manufacturer: Manufactured by Hach Company, a global leader in water quality analysis and analytical instrumentation based in Chicago, USA.
  • Minimal Maintenance: The luminescent sensor cap design dramatically reduces maintenance requirements compared to traditional DO probes, saving time and operational costs.

Applications & Use Cases

The Hach 51811–03 Portable LDO Probe is a versatile analytical instrument suitable for a broad spectrum of dissolved oxygen measurement applications across multiple industries:

Wastewater Treatment

Municipal and industrial wastewater treatment facilities rely on accurate dissolved oxygen measurements to optimize biological treatment processes. The LDO probe provides the precision needed for aeration basin control, ensuring efficient biological oxygen demand (BOD) removal while minimizing energy consumption.

Environmental Monitoring

Environmental scientists and regulatory compliance officers use portable LDO probes to assess water quality in rivers, lakes, estuaries, and coastal waters. Dissolved oxygen is a critical indicator of aquatic ecosystem health, and the Hach LDO probe enables rapid, accurate field measurements without the logistical challenges of traditional DO analysis.

Food and Beverage Production

Breweries, wineries, and food processing facilities monitor dissolved oxygen at various stages of production to ensure product quality and prevent oxidation. The portable design of the 51811–03 probe allows quality control personnel to take measurements at multiple points throughout the production facility.

Pharmaceutical and Biotechnology

Pharmaceutical manufacturing and bioprocessing applications require precise dissolved oxygen control to maintain optimal cell culture conditions and ensure product consistency. The LDO probe’s low-maintenance design and stable measurements make it well-suited for GMP-regulated environments.

Aquaculture

Fish farms and aquaculture operations depend on continuous dissolved oxygen monitoring to maintain healthy growing conditions. The Hach LDO probe provides the accuracy and reliability needed to prevent oxygen-related stress or mortality in intensive aquaculture systems.

Industrial Process Water

Power plants, chemical processing facilities, and pulp and paper mills use the LDO probe to monitor dissolved oxygen in process water, cooling water, and boiler feedwater systems. Controlling DO levels helps prevent corrosion, optimize chemical treatment programs, and ensure compliance with discharge regulations.

Why Choose the Hach 51811–03 Portable LDO Probe

When selecting a dissolved oxygen sensor for your application, the Hach 51811–03 LDO Probe offers several distinct advantages that set it apart from competing technologies:

Luminescent Technology Eliminates Traditional Maintenance

Traditional dissolved oxygen sensors require periodic replacement of membranes and electrolyte solutions, as well as frequent calibration to maintain accuracy. The LDO probe’s luminescent sensor cap eliminates these maintenance tasks entirely, reducing operational costs and minimizing sensor downtime. Simply replace the sensor cap when needed, and the probe returns to accurate operation without complex calibration procedures.

Exceptional Long-Term Stability

The luminescent sensing element exhibits minimal drift over time, providing consistently accurate measurements with extended calibration intervals. This stability is particularly valuable in remote monitoring applications and automated process control systems where frequent calibration is impractical or costly.

Rapid Response Time

The LDO probe responds quickly to changes in dissolved oxygen concentration, enabling real-time process control and rapid detection of process upsets. Fast response times are essential in applications such as aeration control, where delayed measurements can result in energy waste or inadequate treatment.

Trusted Brand Heritage

Hach Company has been a pioneer in water quality analysis for over eight decades, earning the trust of water professionals in more than 100 countries worldwide. The company’s commitment to innovation, quality, and customer support ensures that Hach products deliver reliable performance throughout their operational lifetime.

Compatibility & Integration

The Hach 51811–03 Portable LDO Probe is designed for compatibility with Hach’s family of portable and laboratory dissolved oxygen meters. Integration considerations include:

  • Hach Portable Meters: The probe connects seamlessly to Hach’s range of portable DO meters, providing plug-and-play convenience for field measurement applications.
  • Signal Output: The LDO probe generates a digital signal compatible with Hach instrumentation, ensuring accurate data transmission over the 1-meter cable length.
  • Sensor Cap Compatibility: Uses standard Hach LDO sensor caps that are readily available for replacement when needed, ensuring continuous measurement availability.
  • Data Management: When paired with compatible Hach meters, measurement data can be stored, reviewed, and transferred to PC-based data management systems for reporting and compliance documentation.

Maintenance & Support

One of the primary advantages of the LDO probe technology is its significantly reduced maintenance burden compared to traditional dissolved oxygen sensors. Routine maintenance is limited to periodic cleaning of the sensor body to remove biofilm or deposit buildup, and replacement of the luminescent sensor cap when its service life has been reached.

At Auto2mation, we stand behind every product we sell. This Hach 51811–03 Portable LDO Probe comes with our standard 30-day warranty and free worldwide shipping. Our knowledgeable customer support team is available to assist with product inquiries, technical questions, and after-sales service. We understand that your analytical instrumentation is critical to your operations, and we are committed to ensuring your complete satisfaction with every purchase.


General Electric DS3800NFCB1U1U PC Board | Industrial Control Circuit Board

The General Electric DS3800NFCB1U1U PC Board represents a genuine OEM circuit board from one of the world’s most respected industrial equipment manufacturers. This precision-engineered printed circuit board serves as a critical component within General Electric’s industrial control systems, providing the signal processing, logic execution, and interface functions that enable reliable automation system operation. The DS3800NFCB1U1U designation identifies a specific board configuration within GE’s extensive product catalog, designed for compatibility with particular system architectures and application requirements.

At Auto2mation, we specialize in sourcing hard-to-find industrial electronic components that keep critical automation systems operational. OEM circuit boards like the DS3800NFCB1U1U can be challenging to obtain directly from manufacturers, particularly for legacy systems that remain in productive service years after their initial installation. Our procurement network accesses inventory from facility closures, system upgrades, and excess stock positions worldwide to locate the genuine OEM boards that maintenance teams need to minimize downtime and avoid costly system replacements.


Printed circuit boards are the foundation of modern industrial control systems, providing the physical platform upon which microprocessors, memory devices, communication interfaces, and signal conditioning circuits operate. The reliability of these boards directly impacts the availability of entire production lines, power generation stations, and process plants. General Electric’s engineering expertise and manufacturing quality control produce circuit boards that deliver the long-term reliability that critical industrial applications demand. This refurbished DS3800NFCB1U1U board has been restored to functional condition, offering a cost-effective alternative to new board procurement.

Key Features & Board Identification

  • Genuine GE Component: Authentic General Electric manufactured circuit board ensuring full compatibility with GE control system architectures and specifications
  • DS3800 Series Architecture: Part of GE’s established DS3800 product family of industrial control boards with proven field reliability and extensive application history
  • NFCB Designation: Specific board function code identifying the particular circuit implementation and system role of this board variant
  • Multiple Reference Codes: Documented reference codes including 16CF33, 6BA22 C-ESS, NFCB 6DA17, and NFCB 6FA20 for precise configuration management and compatibility verification
  • Shop Order Traceability: Shop order number 90031201 providing manufacturing traceability and quality documentation linkage
  • JCW Quality Code: JCW marking indicating quality verification and testing status from GE manufacturing processes
  • Compact and Lightweight: At 900 grams, the board installs easily in standard control system card racks without excessive mechanical loading
  • Refurbished Condition: Professional refurbishment restoring the board to operational condition with verified functionality.

Applications & System Integration

The General Electric DS3800NFCB1U1U PC Board serves within GE industrial control systems deployed across diverse industries where reliable automation is essential for operational success. The DS3800 series boards provide the processing, communication, and I/O functions that enable these systems to monitor processes, execute control algorithms, and coordinate equipment operation.

Power generation applications represent a significant deployment sector, with GE control systems managing turbine generators, auxiliary equipment, and balance-of-plant systems in fossil, nuclear, and renewable power plants. Process industries including oil and gas, chemical manufacturing, and metals production rely on GE control platforms for continuous process automation. Manufacturing applications encompass discrete automation, motion control, and machine control where precise timing and reliable operation determine productivity and quality.

The specific NFCB function code indicates this board’s role within the DS3800 system architecture. Users should consult their system documentation or contact our technical team to confirm that this board variant matches their specific system configuration requirements. The documented reference codes (6BA22 C-ESS, NFCB 6DA17, NFCB 6FA20) provide additional compatibility verification data for system engineers.

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Monday, 14 September 2026

Fremo F-50-45-T Oil Burner | Industrial Combustion System

 The Fremo F-50–45-T Oil Burner manufactured by Team Tec AS of Norway represents a purpose-engineered industrial combustion solution designed for reliable, efficient fuel oil burning in marine and industrial heating applications. This complete burner assembly integrates components from industry-leading manufacturers, including Telemecanique, Square D, Nautilus, Suntec, and Fida, to deliver a combustion system that meets the demanding requirements of marine boiler service, industrial process heating, and commercial thermal applications. The F-50–45-T designation identifies a specific burner configuration optimized for particular fuel types, firing rates, and application requirements.

At Auto2mation, we recognize that reliable combustion equipment is essential for marine vessels and industrial facilities where heating system failure can disrupt operations, compromise safety, and create costly downtime. Our procurement team sources genuine industrial burner assemblies from reputable European manufacturers like Fremo and Team Tec, ensuring our customers receive equipment built to the exacting standards that marine classification societies and industrial safety regulators demand. Every burner assembly we offer undergoes visual inspection and functional verification before shipment.

Industrial oil burners serve as the heart of thermal systems that provide steam for propulsion, power generation, heating, and process applications. The burner must reliably atomize fuel oil, mix it with combustion air in the correct proportions, ignite the resulting mixture consistently, and maintain stable combustion across the full operating range. The Fremo F-50–45-T addresses all these requirements through carefully selected components, proven design principles, and quality manufacturing that has made European burner manufacturers preferred suppliers for marine and industrial applications worldwide.

Key Features & System Components

  • Team Tec AS Engineering: Designed and manufactured by Team Tec AS, a respected Norwegian combustion technology specialist with extensive marine and industrial application experience
  • Telemecanique/Square D Control Components: Premium electrical control components from Schneider Electric’s renowned brands ensuring reliable burner sequencing and safety interlock operation
  • Nautilus Safety Switches: High-integrity pressure and limit switches providing safety shutdown capability for abnormal operating conditions
  • Suntec Fuel Pump: Precision fuel oil pump delivering consistent fuel pressure and flow rate for stable atomization and combustion performance
  • Fida Ignition Transformer: Italian-made high-voltage ignition transformer providing reliable spark generation for consistent burner ignition
  • 500V Insulation Rating: UI 500V insulation class with AC-15 utilization category at 240V/1.5A for robust electrical safety
  • French Manufacturing Quality: Made in France to European industrial standards ensuring component quality and manufacturing consistency.

Applications & Use Cases

The Fremo F-50–45-T Oil Burner serves marine and industrial heating applications where reliable fuel oil combustion is essential for operational continuity. Its European engineering and quality component selection make it suitable for demanding applications where burner failure creates significant operational and safety consequences.

Marine boiler applications represent the primary deployment sector, with oil burners providing the combustion energy that generates steam for main propulsion, electrical power generation, cargo heating, accommodation heating, and tank cleaning operations. The F-50–45-T’s robust construction withstands the vibration, humidity, and temperature variations characteristic of marine machinery spaces while delivering consistent combustion performance across varying fuel qualities and ambient conditions.

Industrial process heating applications include thermal oil heaters, hot water boilers, steam generators, and direct-fired process equipment in manufacturing, chemical processing, and food production facilities. Commercial heating systems in large buildings, district heating plants, and institutional facilities also utilize oil burners of this type for reliable, cost-effective thermal energy generation.

Component Integration & Safety

The Fremo F-50–45-T integrates multiple safety-critical components that work together to ensure safe, reliable burner operation. The Telemecanique and Square D control elements provide burner sequencing logic that enforces proper start-up and shutdown procedures, preventing hazardous conditions such as ignition attempts with un-purged combustion chambers or fuel delivery without ignition.

The Fida ignition transformer delivers high-voltage spark energy at 2x5kV r.m.s. with 20mA capacity, ensuring reliable ignition even with marginal fuel quality or adverse combustion chamber conditions. The 33% duty cycle (ED 33% BEL 3) specifies appropriate operating patterns that prevent transformer overheating during extended ignition sequences. The Suntec fuel pump delivers consistent fuel pressure that enables proper atomization for efficient, clean combustion.

Why Choose the Fremo F-50–45-T

European burner manufacturers have established global reputations for engineering excellence, build quality, and operational reliability that justify their premium positioning in the market. The Fremo F-50–45-T embodies this heritage with component selection from industry-leading brands, assembly by experienced technicians, and design principles refined through decades of marine and industrial service.

For facilities requiring burner replacement or spare burner assemblies, sourcing a proven European design like the F-50–45-T provides confidence in operational compatibility, parts availability, and service support. The used condition of this unit reflects prior professional service, with all components inspected by our team before offering.

Maintenance & Technical Support

Auto2mation provides our 30-day warranty on this Fremo oil burner, protecting against defects and ensuring operational condition upon delivery. Our technical team can provide general guidance on installation, compatibility assessment, and component identification. All orders include free shipping. Routine burner maintenance includes nozzle cleaning/replacement, electrode gap adjustment, filter servicing, and combustion analysis verification.

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