🔥 Product Introduction
The HONEYWELL S706PF is a UV compact flame viewing head designed for industrial flame monitoring applications. It uses a UVTron sensor with a spectral response of 185–260 nm and a peak response around 210 nm. The S706PF is the factory-cabled version of the S706 UV viewing head and is intended for use with Honeywell Series 700 signal processors, including the 700ACSP and 700DCSP. Honeywell documentation specifies electronic self-checking without a mechanical shutter and a 5° UV optical field of view.
HONEYWELL S706PF
📋 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | HONEYWELL |
| Model | S706PF |
| Series | Series 700 Industrial Flame Monitoring |
| Product Name | UV Flame Monitor Viewing Head |
| Detector Type | UVTron |
| Country of Origin | Not specified in available manufacturer documentation |
| Product Status | New / New Surplus |
| Dimensions | Approx. 2.0 × 9.7 × 2.0 in (51 × 246 × 51 mm) |
| Cable / Connection | Factory-installed cable / pigtail |
| Power | 24 VDC supplied by compatible signal processor |
Honeywell documentation identifies the S706PF as a UV compact viewing head with a factory-installed cable and lists dimensions of approximately 2.0 × 9.7 × 2.0 inches. The viewing head receives its 24 VDC supply from the associated signal processor rather than functioning as a standalone powered device.
🔧 Troubleshooting & Common Problems
• No flame signal: Check the viewing-head cable, connections, signal processor, sighting alignment, and optical path.
• Weak UV signal: Inspect the viewing lens for dust, deposits, smoke contamination, or other obstructions. Verify correct sighting toward the flame.
• Intermittent flame indication: Inspect the cable and termination for loose connections, moisture, shielding problems, or physical damage.
• No response after replacement: Confirm that the S706PF is compatible with the installed Honeywell signal processor and that the processor is supplying the required voltage.
• Excessive false flame indication: Check the viewing angle and installation location for unwanted UV sources or incorrect burner sighting.
⚠️ Safety Precautions
• Disconnect the applicable power supply before servicing wiring or replacing the viewing head.
• Do not bypass flame-monitoring or burner safety functions during troubleshooting.
• Install the viewing head according to the applicable Honeywell installation and safety documentation.
• Protect the cable from excessive heat, mechanical damage, and direct UV exposure where required.
• Maintain the specified environmental and installation conditions. Honeywell specifies an ambient operating range of approximately −40 to +85 °C for the S70X/S80X family.
📰 Product News & Technical Information
The Honeywell S70X/S80X viewing-head family continues to support industrial flame-monitoring applications using either UV or IR detection. Honeywell identifies S706 and S706PF as UV-sensitive models using a UVTron sensor, while S702/S702PF are IR/flicker-sensitive models. The PF designation indicates a factory-installed cable configuration.
Honeywell also specifies that S706PF can be used with the 700ACSP or 700DCSP signal processors. The S706PF provides electronic self-checking and is designed for applications where UV flame detection is appropriate.
❓ Common Questions & Answers
Q: What is the HONEYWELL S706PF?
A: It is a UV flame-monitoring viewing head used to detect ultraviolet radiation from a burner flame.
Q: What sensor does the S706PF use?
A: It uses a UVTron sensor with a stated spectral response of 185–260 nm and a peak response around 210 nm.
Q: What is the difference between S706 and S706PF?
A: Both are UV viewing heads, but the S706 uses a cable/connector arrangement while the S706PF has a factory-installed cable.
Q: Which signal processors can be used with S706PF?
A: Honeywell identifies the 700ACSP and 700DCSP as compatible signal processors for the S706PF.
Q: Is S706PF suitable for IR flame detection?
A: No. S706PF is a UV-sensitive model. IR models in the same family include S702 and S702PF.
Q: What is the optical field of view?
A: The UV models have a 5° optical field of view.
🔩 Recommended Honeywell Models
- Honeywell S706 — UV Compact Viewing Head
- Honeywell S702 — IR Compact Viewing Head
- Honeywell S702PF — IR Viewing Head with Factory Cable
- Honeywell S702HF — High-Frequency IR Viewing Head
- Honeywell S702HFPF — High-Frequency IR PF Viewing Head
- Honeywell S806 — Stainless-Steel UV Compact Viewing Head
- Honeywell 700ACSP — AC Signal Processor
- Honeywell 700DCSP — DC Signal Processor
- Honeywell P531 — Flame Signal Processor
- Honeywell P532 — Flame Signal Processor
