Honeywell C7061A1079 UV Flame Detector

Configured for dynamic self-check flame supervision in industrial burner management systems, the Honeywell C7061A1079 (C7061A UV Flame Detector) provides direct physical/electrical execution of ultraviolet radiation sensing across process heating platforms.

Hardware Specifications

Dynamic Self-Checking and Signal Isolation

The C7061A1079 incorporates an internal electromechanical shutter mechanism driven by dual shutter coil circuitry compatible with 120/230 VAC systems. The shutter interrupts the optical path to the solid-state UV tube at least once per minute, simulating a flame failure state to verify tube response and electronic circuit integrity without stopping burner operation. Integrated optical filtering isolates ultraviolet radiation bands emitted by hydrocarbon combustion while ignoring ambient infrared radiation and hot refractory wall emissions. Signal output conditioning prevents transient electromagnetic interference from disrupting high-speed burner safety shutdown channels.

Frequently Asked Questions

Q: What is the primary purpose of the internal dynamic self-checking shutter mechanism in the C7061A1079?

A: The shutter interrupts the ultraviolet radiation path to the UV sensor tube periodically to verify that the sensor tube and internal amplifier circuits respond to a simulated flame-out condition, preventing runaway failure modes in continuous-firing burners.

Q: How is the viewing lens maintained or replaced if contaminated by process particulate?

A: The front housing contains a threaded retaining assembly holding a quartz viewing window. Main AC supply power must be isolated prior to unthreading the sight pipe fitting to access, clean, or replace the quartz lens without removing the entire detector enclosure.

Q: Can the C7061A1079 be wired directly to standard safety shutdown controllers over long distances?

A: Yes, the module includes an 8 ft (2.4 m) color-coded lead wire assembly. When extending lead wire runs to remote control panels, standard industrial shielded twisted-pair cables must be used with proper conduit isolation to prevent high-voltage crosstalk.

Field Installation Guidelines

• Thread the 3/4 in NPT mechanical flange onto a clean sight pipe aimed directly at the intersection of the primary flame envelope and the burner firing head.

• Ensure sight pipe engagement maintains at least 5 full NPT thread turns to satisfy structural mounting requirements and pressure sealing.

• Route the 8 ft color-coded lead wires through dedicated grounded metal conduit separate from ignition transformer leads and high-voltage AC power lines.

• Verify that ambient temperatures at the housing location remain between -40 deg C and +70 deg C; install auxiliary sight pipe cooling air systems if radiant heat exceeds maximum ratings.