I. Basic Information
Brand: Honeywell (Honeywell)
Type: Ultraviolet UV Flame Detector with Dynamic Self-Testing Function
Common Name: Purple Probe, Flame Photocell
Power Supply: 120VAC 50/60Hz
Power Consumption: Maximum 7W
Installation Interface: 1-inch NPT Threaded Flange Installation
Protection Grade: NEMA 4 (IP66, Dustproof and Waterproof)
Cable Configuration: Standard 2.44 meters (96 inches) multi-color coded lead wire
Product Status: The original factory has discontinued production. It belongs to a classic old model of combustion safety accessory.
Core Functions
UV Ultraviolet Flame Detection: Captures ultraviolet rays emitted by gas, fuel, and coal flames. It is not affected by visible light in the furnace or high-temperature infrared radiation, avoiding false detections.
Dynamic Self-Testing Function: Built-in shading shutter for periodic self-testing. It detects whether the ultraviolet lamp tube is damaged and whether the probe is clogged and ineffective in real time, eliminating “false alarms when there is fire and false alarms when there is no fire” safety hazards.
The detection signal is transmitted to the matching flame amplifier, and the combustion controller determines whether there is a flame based on the signal. When the flame is extinguished, it quickly cuts off the fuel valve, providing explosion-proof protection.

Key Technical Parameters
Operating Environment Temperature: -29℃ ~ +79℃
Shell Material: Cast Aluminum Purple Shell
Window Pressure Resistance: 20PSI
Dimensions: Diameter 133mm × Length 183mm
Net Weight: Approximately 1.9kg
Certifications: UL, CSA, FM Explosion-proof Safety Certification
Compatible Controller (Must be Used in Combination)
Only compatible with the same series flame signal amplifier:
R7247C, R7847C series flame safety controllers
It cannot be directly connected to PLC. It requires a matching amplification module to process the flame signal.
Typical Application Scenarios
Industrial boilers, hot air furnaces, heat treatment incinerators, heat transfer oil furnaces, gas and fuel combustioners, etc., for flame monitoring and flame-out interlock protection.
VI. Reference for Replacement in the Same Series
Compatible with the old model: C7012E1104;
Same Series Voltage Versions: C7012G is 220VAC specification, and cannot be directly interchanged.










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