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Rosemount
Rosemount 975HR Multi-Spectrum IR Hydrogen Flame Detector
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Rosemount 975HR: multi-IR QuadSense; H2 to ~164 ft; <50 ms; HART/Modbus. RFQ.
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RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Output
Multiple outputs; HART and RS-485 Modbus configuration
Approvals
SIL3 compatible; Hazardous area worldwide certifications (per PDS)
Detection Type
Multi-spectrum infrared (QuadSense) optimized for hydrocarbon and hydrogen flames (975HR)
Detection Range Hydrogen
Hydrogen plume fire detection to 164 ft (50 m) at highest sensitivity
Detection Range Hydrocarbon
Hydrocarbon pan-fire detection per PDS Table 1 (975HR column; family up to 300 ft / 90 m on 975MR)
Response Time
High-speed response under 50 ms; flash-fire capable
Fits hydrogen and hydrocarbon flame detection where you need a Rosemount 975HR—multi-spectrum infrared QuadSense detector with hydrogen plume detection to about 164 ft (50 m) at highest sensitivity, high-speed response under 50 ms, and HART / RS-485 Modbus configuration.
Key advantages
- Detection — Multi-IR QuadSense for hydrocarbon and hydrogen
- H2 range — About 164 ft (50 m) at highest sensitivity
- Response — Under 50 ms; flash-fire capable
- Temp — About −60 to +85 °C
- Comms — HART and RS-485 Modbus
Typical applications
- Hydrogen facilities.
- Oil & gas fire detection.
- Chemical plant flame monitoring.
Selection guide
- Sensitivity level
- Heated optics
- Output mapping
Common mistakes
- Blocked FOV.
- Wrong sensitivity for fuel.
- Ignoring optical integrity test.
When to RFQ / what to tell us
- Options/outputs.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 43513 |
| Brand | Rosemount |
| Model | 975HR |
| Product type | Flame Detector |
| Detection type | Multi-spectrum infrared (QuadSense) optimized for hydrocarbon and hydrogen flames (975HR) |
| H2 detection range | Hydrogen plume fire detection to 164 ft (50 m) at highest sensitivity |
| Hydrocarbon detection range | Hydrocarbon pan-fire detection per PDS (975HR column; family up to 300 ft / 90 m on 975MR) |
| Response time | High-speed response under 50 ms; flash-fire capable |
| Spectral bands | Multi-IR QuadSense bands for hydrocarbon and hydrogen discrimination |
| Output signal | Multiple outputs; HART and RS-485 Modbus configuration |
| Operating temperature | −76 to +185 °F (−60 to +85 °C) |
| Special features | Built-in optical integrity test; event log; FS-HR-975 flame simulator compatible; SIL3 compatible |
Documents
FAQ
Q: H2 detection range? A: About 164 ft (50 m) at highest sensitivity.
Q: Response? A: Under 50 ms class.
Q: What should I send for a quote? A: Options/outputs, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Output | Multiple outputs; HART and RS-485 Modbus configuration |
| Approvals | SIL3 compatible; Hazardous area worldwide certifications (per PDS) |
| Detection Type | Multi-spectrum infrared (QuadSense) optimized for hydrocarbon and hydrogen flames (975HR) |
| Detection Range Hydrogen | Hydrogen plume fire detection to 164 ft (50 m) at highest sensitivity |
| Detection Range Hydrocarbon | Hydrocarbon pan-fire detection per PDS Table 1 (975HR column; family up to 300 ft / 90 m on 975MR) |
| Response Time | High-speed response under 50 ms; flash-fire capable |
| Spectral Bands | Multi-IR QuadSense bands for hydrocarbon and hydrogen discrimination |
| Sensitivity Levels | Multiple field-configurable sensitivity settings |
| Operating Temperature | −76 to +185 °F (−60 to +85 °C) |
| Enclosure | Rugged flameproof/explosion-proof housing; heated optics options |
| Mtbf | 150,000 hours MTBF claimed |
| Special Features | Built-in optical integrity test; event log; FS-HR-975 flame simulator compatible; SIL3 compatible |
| Form Factor | Fixed flame detector for oil & gas, chemical, hydrogen, and industrial fire detection |
| Family | Rosemount 975 (975MR / 975HR / 975UF / 975UR) |