Description
Honeywell C7012E1104 | UV Flame Detector Spec Sheet
Product Introduction
When a massive industrial boiler locks out mid-cycle because of a degraded flame sensor lens, tracking down an exact-match replacement prevents costly plant heating or steam interruptions. The Honeywell C7012E1104 is not a generic optical eye; it is a heavy-duty, self-checking ultraviolet flame detector engineered specifically to distinguish true combustion ultraviolet radiation from hot refractory glow in continuous-duty burner applications.
Mounted directly to the burner housing via standard pipe threading, the unit uses an internal mechanical shutter mechanism to test its own shutter and sensor circuitry periodically—ensuring it never fails blind to an unsafe condition. It demands clean cooling purge air and strict wiring isolation, but once bolted into position, it delivers the fail-safe reliability required for high-capacity industrial combustion systems.
C7012E1104
Key Technical Specifications
| Parameter | Specification |
| Input Voltage | 110-120VAC (50/60Hz) |
| Power Consumption | Approximately 7.0 W |
| Mounting Connection | 3/4 inch NPT threaded mount |
| Ambient Temperature Range | -20^\circF to +175^\circF (-29^\circC to +79^\circC) |
| Enclosure Rating | NEMA 4 weatherproof housing |
| Lead Wire Length | 8 ft (96 inches / 2438 mm) flexible conduit leads |
| Weight | Approximately 1.8 kg |
Application Scenarios & Pain Points
- Industrial Water-Tube Boilers: Frequent false trips caused by degraded, non-self-checking optical sensors used to plague continuous-duty utility boilers until engineers upgraded to the C7012E1104. Its internal shutter verification eliminates false flame-out shutdowns.
- Petrochemical Flare and Furnace Lines: Without robust vibration and weather resistance, outdoor burner sensors would fail prematurely. This NEMA 4-rated Honeywell detector withstands harsh weather and thermal expansion cycles effortlessly.
- Legacy Burner Management Retrofits: A manufacturing plant avoided an expensive, complete burner control system refit by dropping a verified surplus C7012E1104 directly into an existing sight tube assembly.
QA & Live Testing SOP (Trust Signal)
Combustion safety hardware demands absolute verification before safeguarding a live burner. Every incoming Honeywell C7012E1104 goes through a strict multi-point test protocol:
- Visual & Optical Inspection: We examine the quartz viewing window for soot, micro-cracks, or clouding, and inspect the internal electromechanical shutter mechanism for smooth actuation.
- Powered Bench Verification: The unit is energized with nominal 120VAC power on a test rig to verify that the self-checking shutter cycles properly and produces a stable UV signal response when exposed to a test flame source.
- ESD & Weatherproof Packaging: Units are sealed in moisture-barrier packaging to protect internal electronics during transit. When you unbox the C7012E1104, it is ready for immediate safety-critical installation.
Field Engineer’s Pitfall Guide
- ❗ Purge Air Omissions: Never operate the without connecting the recommended sight pipe cooling purge air; failing to do so will cause internal optical components to overheat and coat with combustion carbon rapidly.
- ❗ Electrical Noise Interference: Always run the detector lead wires in a dedicated, grounded metal conduit separate from high-voltage motor or ignition transformer leads to prevent induced signal spikes.
- ❗ Refractory Sight Tube Alignment: Ensure the sight pipe is aimed correctly at the primary combustion zone root rather than hot burner tile glow, or the self-checking circuit may mask a genuine flame loss.
Intent-Driven FAQ
Can the Honeywell be used on both gas and oil-fired burners?
Yes, the ultraviolet spectral response of the makes it fully compatible with natural gas, propane, and various fuel oil flames.
Is this specific unit brand new or surplus?
This inventory consists of verified surplus—un-installed factory backup stock preserved in climate-controlled storage environments.
What does the “self-checking” feature actually do?
The internal shutter periodically blocks the view of the flame every few seconds, allowing the electronic circuitry to check component health and verify it hasn’t failed in a permanently “flame-on” state.
What kind of warranty comes with this purchase?
Every surplus detector includes a standard 1-year replacement warranty covering any functional electrical or mechanical defects under normal operating conditions.
Do I need a special amplifier relay to tie this into my burner control?
Yes, the requires a compatible Honeywell burner control amplifier (such as an R7847 or equivalent dynamic self-check chassis) designed to process the shutter-frequency signal.
