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Rosemount
Rosemount 975HR Flame Detector
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Rosemount 975HR: multi-spectrum IR; H2/HC; six sensitivity levels; SIL3-class. RFQ.
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Key parameters
Type
Multi-spectrum IR hydrogen flame detector — Rosemount 975HR (QuadSense)
Detection
Hydrocarbon and hydrogen flames; hydrogen to ~164 ft (50 m); hydrocarbons to ~300 ft (90 m)
Response Time
High-speed response under 50 ms
Sensors
Four IR bands (multi-spectrum QuadSense)
Sensitivity Levels
Six selectable sensitivity levels
Operating Temperature
−76 °F (−60 °C) to +185 °F (+85 °C)
Fits fixed multi-spectrum IR flame detection where you need a Rosemount 975HR. QuadSense four-IR-band detection covers hydrocarbon and hydrogen flames with six selectable sensitivity levels, response under 50 ms, heated window options, and HART / Modbus / relay / 4–20 mA outputs per configuration.
Key advantages
- Sensors — Four IR bands (multi-spectrum QuadSense)
- Fuels — Hydrocarbon and hydrogen flames
- Sensitivity — Six selectable levels
- Response — Under 50 ms
- Optics — Heated window options; IR BIT
Typical applications
- Compressor stations.
- Hydrogen process units.
- Tank farm flame detection.
Selection guide
- Sensitivity
- Output set
- Heated optics
Common mistakes
- Sun/welding false-alarm geometry.
- Dirty window.
- Wrong power range.
When to RFQ / what to tell us
- RM/options.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 43515 |
| Brand | Rosemount |
| Model | 975HR |
| Product type | Flame Detector |
| Type | Multi-spectrum IR hydrogen flame detector — Rosemount 975HR (QuadSense) |
| Detection | Hydrocarbon and hydrogen flames; hydrogen to ~164 ft (50 m); hydrocarbons to ~300 ft (90 m) |
| Response time | High-speed response under 50 ms |
| Sensors | Four IR bands (multi-spectrum QuadSense) |
| Sensitivity levels | Six selectable sensitivity levels |
| Operating temperature | −76 °F (−60 °C) to +185 °F (+85 °C) |
| Outputs | HART; Modbus RS-485; relays / 4–20 mA (see RM) |
| Optics | Heated window (two-mode) against condensation/icing; IR BIT |
Documents
FAQ
Q: Sensitivity levels? A: Six selectable.
Q: Response? A: Under 50 ms.
Q: What should I send for a quote? A: Options, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Type | Multi-spectrum IR hydrogen flame detector — Rosemount 975HR (QuadSense) |
| Detection | Hydrocarbon and hydrogen flames; hydrogen to ~164 ft (50 m); hydrocarbons to ~300 ft (90 m) |
| Response Time | High-speed response under 50 ms |
| Sensors | Four IR bands (multi-spectrum QuadSense) |
| Sensitivity Levels | Six selectable sensitivity levels |
| Operating Temperature | −76 °F (−60 °C) to +185 °F (+85 °C) |
| Outputs | HART; Modbus RS-485; relays / 4–20 mA (see RM) |
| Optics | Heated window (two-mode) against condensation/icing; IR BIT |
| Reliability | SIL3 compatible; ~150,000 hours MTBF (PDS) |
| Document | PDS 00813-0200-4976 Rev AE + Manual 00809-1400-4975 |