Description
The Rosemount 975UF ultra fast ultraviolet infrared flame detector can detect hydrocarbon-based fuel and gas fires, hydroxyl and hydrogen fires, as well as metal and inorganic fires. This UV/IR flame detector senses radiant energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum.
The signals from both sensors are analyzed for frequency, intensity and duration. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal. The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation.
Features- UV/IR dual-sensor
- High-speed response - 20 msec to flash fire
- Solar blind
- Automatic Built-In-Test (BIT) - to assure continued reliable operation
- Heated window - for operation in harsh weather conditions (snow, ice, condensation)
- Relays (3) for alarm, fault, and auxiliary
- Analog output for fast detection
- 0-20 mA (stepped)
- HART® Protocol for maintenance and asset management
- High reliability - MTBF - minimum 150,000 hours
- User programmable via HART® or RS-485
Specifications
Specifications
Brand
Approvals & Certifications
- SIL Certification
Approvals & Certifications
- ATEX: Ex II 2 GD, Ex d E IIC T5 Gb Ex d E IIC T4 Gb Ex Tb IIIC T96° C Db Ex Tb IIIC T106° C Db (-55° C ≤ Ta ≤ 75° C) (-55° C ≤ Ta ≤ 85° C)
- CSA: Class I, Div. 1, Groups B, C, D Class II, III, Div. 1, Groups E, F, G
- DNV Marine
- FM/FMC: Class I, Div. 1, Groups B, C, D Class II, III, Div. 1, Groups E, F, G
- IECEx
Communication
- HART
- RS-485 Modbus
Enclosure Finish
- Electro-Polished
- Red Epoxy Enamel Finish (Not Available in FM Version)
Enclosure, Body Material
- 316L Stainless Steel
- Heavy Duty Copper-Free Aluminum (Less than 1 %)
Environmental Protection
- IP66
- IP67
- NEMA 250 6P
Materials of Construction
- Mounting: 316 Stainless Steel with Electro Polish Finish
Measuring Range
- Detection Rang: 6 to 66 Ft (1.8 to 20 metres)
Operating Temperature
- -55° to 75° C (-67° to 167° F)
- -55° to 85° C (-67° to 185° F) Option
Operating Voltages
- 24 Vdc Nominal (18-32 Vdc)
Storage Temperature
- -55° to 85° C (-65° to 185° F)
Documentation
Documentation
Data Sheets
Product Manuals
- Manual: 975 Air Shield pdf 325 KB
- Manual: Flame Simulator: FS-UVIR-975 pdf 428 KB
- Manual: Installation Instructions for the Duct Mount pdf 319 KB
- Manual: Rosemount 975 Flame Detector HART Communication pdf 442 KB
- Manual: WinHost Configuration and Diagnostic Software for Rosemount 975 Flame Detectors pdf 226 KB
- Rosemount 975UF Flame Detector Manual PDF pdf 2.4 MB
Certificates & Approvals
Drawings & Schematics
- Drawing: Rosemount Model 975 Flame Detector pdf 176 KB
- Drawing: Rosemount Model 975 Flame Detector and Tilt Mount Bracket Assembly pdf 204 KB
- Drawing: Rosemount Model 975 Flame Detector Pipe Mount Bracket pdf 326 KB
- Drawing: Rosemount Model 975 Flame Detector Tilt Mount Assembly and Weather Cover pdf 259 KB
- Drawing: Rosemount Model 975 Flame Detector with Air Shield pdf 377 KB
- Drawing: Rosemount Model 975 Flame Detector with Cone Viewer pdf 265 KB
- Drawing: Rosemount Model 975 Flame Detector with Duct Mount pdf 205 KB
- Drawing: Rosemount Model 975 Flame Detector with Weather Cover pdf 234 KB
- Drawing: Rosemount Model 975 Flame Simulator pdf 216 KB