Rosemount™ 975HR Multi-Spectrum Infrared Hydrogen Flame Detector

Rosemount

Rosemount™ 975HR Multi-Spectrum Infrared Hydrogen Flame Detector

Rosemount

The Rosemount 975HR Multi-spectrum Infrared Hydrogen Flame Detector is specifically designed for the detection of hydrocarbon and hydrogen flames. It detects hydrocarbon-based fuel and gas fires at long distances with the highest immunity to false alarms. The 975HR is the most durable and weather resistant hydrogen flame detector on the market. Its features include a heated window to eliminate condensation and icing, HART®, lower power requirements and a compact lighter design.

Specifications

Time Constant / Response
Typically 5 s
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)
Power Supply
Standby: Max. 90 mA (110 mA with heated window)
Alarm: Max. 130 mA (160 mA with heated window)
Mounting
Stainless Steel 316L with electro polish finish
Certifications/Approvals
ATEX and IECEx

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)
Dimensions
FM/FMC/CSA

Class I Div. 1, Groups B, C, & D
Class II/III Div.1, Groups E, F & G
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)
Tilt mount 2.2 lb (1.0 kg)

Features

  • Multi spectrum design for detection of hydrocarbons and hydrogen flames with 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 (SIL2 – TÜV)
  • 5-Year Warranty
  • User Programmable via HART® or RS-485

Documents & Drawings

Training & Services