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Rosemount™ 975MR Multi-Spectrum Infrared Flame Detector
rosemount 5900s
The Rosemount 975MR multi-spectrum infrared flame detector is based on accurately analyzing the multi-spectral signals by utilizing three separate IR sensors.
The 975MR detects fuel and gas fires at long distances. For example, this product will detect a 1 ft2 (0.1m2) gasoline pan fire at 215 ft (65 m) in less than 5 seconds. The 975MR also provides the highest immunity to false alarms and enhanced overall coverage range.
Rosemount™ 975MR Multi-Spectrum Infrared Flame Detector

Specs

Ambient Temperature
Operating: -67 °F to +167 °F (-55 °C to +75 °C)
Option: -67 °F to +185 °F (-55 °C to +85 °C)
Storage: -67 °F to +185 °F (-55 °C to +85 °C)
Enclosure Rating
Stainless Steel 316L with electro polish finish
Heavy duty copper free aluminum (less than 1 %), red epoxy enamel finish (not available in FM version)
Mounting
Stainless Steel 316L with electro polish finish
Dimensions
Detector 4"x 4.6"x 6.18"(101.6 x 117 x 157 mm)
Weight
Detector (stainless steel 316L) 6.1 lb (2.8 kg)
Detector (aluminum) 2.8 lb (1.3 kg)
Tilt mount 2.2 lb (1.0 kg)
Certifications/Approvals
ATEX and IECEx:
  • II 2 G D
  • Ex db eb op is IIC T4 Gb
  • Ex tb op is IIIC T96 °C Db
  • (Ta -55 °C to +85 °C)
or
  • Ex 2 G D
  • Ex db eb op is IIC T4 Gb
  • Ex tb op is IIIC T96 °C Db
  • (Ta -55 °C to +75 °C)
FM/FMC/CSA:
  • Class I Div. 1, Groups B, C, & D
  • Class II/III Div.1, Groups E, F, & G
Performance:
  • EN 54-10 (VdS)
  • FM 3260
Reliability:
  • IEC 61508 - SIL 2 (TÜV)
Marine:
  • MED "wheelmark" approval
    • (DNV)
  • "Type" approval (DNV)

Features

  • Multi spectrum design - for long distance detection and high false alarm immunity
  • Sensitivity selection - to ensure no zone crossover detection
  • Automatic and Manual 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
  • 0–20 mA (stepped)
  • HART® Protocol for maintenance and asset management
  • RS-485, Modbus compatible
  • High Reliability - MTBF - minimum 150,000 hours
  • Approved to Safety Integrity Level 2 (SIL 2 – TÜV)
  • 5-Year Warranty
  • User Programmable via HART® or RS-485

Education

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