The Honeywell C7035A1031 Flame Sensor Ultraviolet Minipeeper Flame Detector, For Use on Coal, Gas and Oil Fired Burners, Nema 3 and Nema 4 Rated, Integral Nut for 1 Inch Sighting Pipe Mounting, 72 Inch Lead Length, -40/250 Degree Ambient Temperature Rating
Overview
The Honeywell C7035A1031 is a compact Minipeeper ultraviolet flame sensor engineered for flame detection in burner and boiler management systems. This sensor is designed to sense UV radiation emitted by combustion flames, ensuring reliable flame supervision and safety in commercial and industrial heating applications. With its rugged housing, wide operating temperature range, and flexible installation options, it is a trusted component for flame safeguard systems.
Specifications
| Specification | Detail |
|---|---|
| Model | C7035A1031 |
| Sensor Type | Ultraviolet (UV) flame detector |
| Mounting | 1-inch NPT sight pipe collar |
| Lead Length | 72 inches (6 ft) |
| Temperature Range | −40 °F to 250 °F (−40 °C to 121 °C) |
| Pressure Sealing | Up to 5 psi when properly installed |
| Enclosure Rating | NEMA 4, rain-tight |
| Flame Detection | Senses ultraviolet radiation from gas and oil flames |
| Replaceable Component | Field-replaceable UV sensing tube |
Key Features & Benefits
Compact “Minipeeper” design fits easily into limited space installations.
Rugged, weather-resistant housing for reliable indoor and outdoor use.
Detects UV radiation for accurate flame supervision in combustion systems.
Sealed design withstands up to 5 psi pressure.
Can be wired in parallel when flame sighting is difficult.
Service-friendly with a field-replaceable sensing tube.
Applications
Boilers and furnaces
Oil and gas burners
Flame safeguard and burner management systems
Industrial heating equipment
OEM and retrofit replacement installations
Installation & Maintenance Notes
Mount on a 1″ sight pipe with direct line of sight to the flame.
Use black iron sight pipe to reduce reflections and false readings.
Keep wiring clear of ignition cables and high-voltage lines.
Periodically clean the sensor window to maintain sensitivity.
Replace the sensing tube if UV response diminishes.










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