DURAG DHG-400 High Energy Ignition & Flame Monitoring System

Overview

The DURAG DHG-400 combines high energy ignition technology with flame monitoring capabilities to ensure safe burner operation in industrial combustion systems. The device is designed to reliably ignite both gas and liquid fuels using a high-energy spark and to continuously verify flame presence through integrated detection and signal feedback. With more than three decades of proven design evolution, the DHG-400 is trusted for demanding safety-critical environments. 

Core Features & Technology

• High Energy Ignition: Generates reliable ignition energy up to 90 J/s for consistent spark ignition of gas and oil burners. 

• Microcontroller-Monitored Ignition: Ensures controlled, monitored triggering with electronic protection against defective ignition tips. 

• Ignition Feedback Relay: Includes relay contact output for ignition feedback and integration with control systems. 

• UV Flame Detection: Works with UV-type detectors (e.g., D-LE103 and D-UG120024D-420) to confirm flame presence and sustain safe operation. 

• Robust Operation: Operating temperature range from –20 °C to +60 °C, suitable for industrial environments. 

• Optional Retraction Unit: Enables automatic retraction of the ignition tip from the hot combustion zone for extended component life. 

Performance & Design

The DHG-400 employs a thyristor-controlled capacitor discharge circuit that produces high-energy sparks for ignition. This non-wearing electronic switching approach enhances longevity and reliability compared with traditional ignition systems. The ignition discharge frequency adapts during operation to ensure proper fuel ignition. 

The system can be configured with various ignition lance lengths and explosion-proof housings (ATEX/IECEx compliant variants) for use in hazardous zones. 

Typical Industrial Applications

The DURAG DHG-400 is used in a wide range of combustion systems where safety and reliability are essential:

• Industrial Boilers

• Power Generation Plants

• Refineries and Petrochemical Facilities

• Steam Generators and Thermal Processes

• Combustion Furnaces in Cement and Chemical Plants

• Marine Boiler Systems

• Oil & Gas Burner Ignition and Safety Monitoring 

These applications benefit from the DHG-400’s ability to provide fail-safe ignition and flame feedback monitoring, helping protect equipment and personnel from flame failure and unsafe combustion conditions. 

Technical Specifications (Typical)

FAQ

What is the DURAG DHG-400 used for?

It is used as a high-energy ignition device and flame monitoring system in industrial combustion setups, ensuring safe ignition and verification of flame presence in gas and oil burners. 

Can the DHG-400 monitor flame presence continuously?

Yes — with ultraviolet (UV) detectors connected, it continuously verifies flame presence and relays feedback to the control system. 

Is the system suitable for hazardous environments?

Variants with explosion proof housings are certified for use in hazardous zones (ATEX/IECEx). 

How does it ignite fuel?

The system uses a high-energy spark ignition method with a thyristor-controlled capacitor discharge to reliably ignite gas and liquid fuels. 

Does this product provide safety feedback signals?

Yes — it includes relay outputs for ignition and flame feedback to integrate with remote control units. 

Call to Action

Ensure reliable and safe ignition with the DURAG DHG-400 High Energy Ignition & Flame Monitoring System. Contact Seven Star LLC for pricing, availability, system configuration, and technical support.