Honeywell C7061F2001

Honeywell C7061F2001

Product Overview
The Honeywell C7061F2001 is an explosion-proof dynamic self-check ultraviolet flame detector. It is functionally similar to the C7061A series but is built with a heavier explosion-proof housing for use in hazardous locations. It detects ultraviolet radiation from flames produced by natural gas, oil, and other fuels. The C7061F2001 is typically used with the R7861 dynamic self-check amplifier and Honeywell 7800 series burner controls.

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Description

Honeywell C7061F2001

Technical Specifications

  • Brand: Honeywell
  • Model: C7061F2001
  • Product Type: Explosion-proof dynamic self-check ultraviolet flame detector
  • Detection Method: Ultraviolet radiation sensing
  • Compatible Amplifier: R7861
  • Compatible Controls: Honeywell 7800 series burner controls
  • Mounting Connection: 1 inch NPT pipe union
  • Electrical Rating: 120 Vac
  • Frequency: 50 Hz and 60 Hz
  • Ambient Temperature Range: -40°F to +175°F, approximately -40°C to +79°C
  • Enclosure Rating: Explosion-proof housing for hazardous locations
  • Weight: Approximately 14.5 lb or 6.6 kg
  • Leadwire Length: Approximately 2.4 m or 96 in
  • Quartz Viewing Window Pressure Rating: 100 psi or 690 kPa

Functional Features

  • Detects ultraviolet radiation from gas, oil, and other fuel flames.
  • Provides dynamic self-check through an internal oscillating shutter.
  • Designed for hazardous or explosion-risk environments.
  • Uses a robust explosion-proof housing to reduce ignition risk in classified areas.
  • Supports continuous flame monitoring in demanding combustion systems.
  • Allows field replacement of the UV sensing tube and viewing window.
  • Compatible with R7861 amplifier and 7800 series burner controls.
  • Supports parallel detector installation where flame sighting is difficult.
  • Provides improved mechanical protection compared with standard NEMA 4 detectors.

Application Scenarios

  • Hazardous location burner applications.
  • Gas-fired and oil-fired industrial burners in classified areas.
  • Petrochemical, chemical, and refinery combustion systems.
  • Process heaters and boilers requiring explosion-proof flame detection.
  • Legacy Honeywell 7800 series burner control systems.
  • Sites where C7061A detectors do not meet area classification requirements.

Performance Parameters

  • Ultraviolet sensing tube rated down to -40°F or -40°C.
  • Quartz viewing window pressure rating is 100 psi or 690 kPa.
  • Explosion-proof housing suitable for hazardous locations; exact certification markings should be confirmed on the product nameplate.
  • Flame signal evaluation depends on the R7861 amplifier and associated burner control.
  • Exact response time, hazardous area classification, temperature class, and electrical connection details should be verified from the physical unit and official Honeywell documentation.

Material Composition

  • Heavy-duty explosion-proof housing.
  • Quartz viewing window rated for higher pressure.
  • Ultraviolet sensing tube.
  • Oscillating shutter assembly.
  • Internal gaskets and sealing components.
  • Color-coded electrical leadwires.
  • Metal mounting hardware and pipe union.

Structural Characteristics

  • Explosion-proof two-piece or heavy-duty housing design.
  • Larger and heavier than the C7061A series due to the explosion-proof construction.
  • 1 inch NPT pipe union for secure mounting to a sight pipe.
  • Front optical window designed for higher pressure resistance.
  • Internal shutter mechanism for dynamic self-check.
  • Alignment features to ensure correct shutter operation.
  • Designed to maintain flame-path integrity in hazardous environments.

Working Principle
The C7061F2001 operates like other C7061 detectors by sensing ultraviolet radiation from a flame. The internal shutter periodically blocks UV radiation to verify that the sensing tube is still functional. This dynamic self-check helps prevent undetected failures. The detector sends the flame signal to the R7861 amplifier, which determines whether a valid flame is present. The explosion-proof housing ensures that internal electrical components are isolated from potentially explosive atmospheres.

Installation Requirements

  • Confirm that the hazardous area classification matches the detector certification.
  • Install using the 1 inch NPT pipe union and a suitable sight pipe.
  • Maintain a clear optical path to the flame.
  • Verify that the supply voltage matches the 120 Vac rating of the C7061F2001.
  • Use approved wiring methods for hazardous locations.
  • Ensure all housing seals, gaskets, and threaded connections are properly tightened.
  • Do not modify the housing, window, or flame path components.
  • Perform flame signal verification after installation.
  • Follow plant safety, electrical, and hazardous area installation requirements.

Precautions for Use

  • The C7061F2001 must only be used where its explosion-proof rating is applicable and approved.
  • Do not substitute a C7061A detector where an explosion-proof detector is required.
  • Keep the viewing window clean and inspect it regularly.
  • Do not operate with damaged housing, seals, or connectors.
  • Replace only with approved UV tubes, windows, and gaskets.
  • Verify compatibility with the R7861 amplifier and burner control before commissioning.
  • Store spare detectors in dry, clean, and protected conditions.
  • Refer to official Honeywell documentation for certification limits, wiring, and maintenance procedures.

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