Honeywell R7861A1026 Flame Signal Amplifier

Description

Honeywell R7861A1026 Flame Signal Amplifier

Product Dimensions：

The Honeywell R7861A1026 is a microprocessor-based Dynamic Self-Check Flame Amplifier. It is a critical plug-in component used in conjunction with Honeywell’s 7800 SERIES Burner Control/Flame Safeguard systems to detect and monitor the presence of a flame in industrial and commercial burner applications.

Product Detailed Description

The R7861A1026 is designed to interface specifically with ultraviolet (UV) flame detectors (such as the Honeywell C7061A). Its defining feature is the Dynamic Self-Check capability. The amplifier continuously tests its own internal circuitry and the shutter mechanism of the UV sensor several times per minute. This ensures that any component failure—such as a shorted UV tube that could falsely mimic a flame—is detected immediately, causing the burner system to shut down safely.

Technical Parameters

Product Advantages

• Maximum Safety Integrity: The dynamic self-check mechanism eliminates the risk of a “fail-to-unsafe” scenario, making it highly reliable for continuous-operation burners.
• Plug-and-Play Design: It features a simple edge-connector that plugs directly into the keyboard-style slot of any 7800 SERIES relay module, allowing for easy upgrades or replacements.
• Precise Diagnostics: When paired with a 7800 SERIES display module, it provides real-time flame signal voltage readings, simplifying troubleshooting and sensor alignment.
• Fast Response Time: A strict FFRT rating of 3.0 seconds ensures that the fuel supply is cut off almost instantly if the flame goes out unexpectedly.

Important Considerations & Precautions

• Detector Compatibility: The R7861A1026 must be paired with a shutter-operated self-checking UV detector (e.g., C7061A). Using it with a standard, non-shutter UV sensor (like the C7027A) will result in a system fault.
• Voltage Measurement: Flame signal voltage must be measured using a high-impedance digital voltmeter (10 M\Omega/V minimum) plugged into the color-coded jack on the front of the amplifier faceplate.
• Electrical Isolation: Always turn off the main power supply to the burner control system before plugging in or removing the amplifier module to prevent arc-damage to the contacts.
• Environmental Limits: Ensure that the ambient temperature around the control cabinet does not exceed 60°C, as high heat can shorten the lifespan of the microprocessor components.

Product Applications

The R7861A1026 is used globally in commercial, industrial, and utility environments that demand continuous or long-term firing cycles:

• Industrial Boilers: Monitoring main burner flames in manufacturing plants and district heating facilities.
• Commercial HVAC: High-capacity water heaters and climate control systems in large buildings.
• Process Furnaces: Providing flame safeguard protection in chemical reactors, kilns, and metal treatment furnaces.
• Incinerators: Ensuring reliable flame monitoring in waste-to-energy and environmental treatment systems.

Shipping Port: Xiamen, China

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