Rosemount Analytical 975HR Specifications

Rosemount 975HR Multi-spectrum Infrared Hydrogen Flame Detector

FGD-PDS-975HR-Multi-spectrum-Infrared-Hydrogen-Flame-Detector

Product Data Sheet

January 2018

Rosemount

TM

975HR

Multi-spectrum Infrared Hydrogen Flame Detector

The RosemountTM 975HR Multi-spectrum
Infrared Hydrogen Flame Detector is specifically
designed for detection of hydrocarbon and
hydrogen flames. It detects hydrocarbon­based fuel and gas fires at long distances with
the highest immunity to false alarms. The
Rosemount 975HR can detect a gasoline pan fire
at 65 m (215 ft) or a hydrogen flame at 38 m
(125 ft) in less than five seconds.

The Rosemount 975HR is the most durable and weather

resistant ame detector on the market. Its features include a

heated window to eliminate condensation and icing, HART®,

lower power requirements and a compact lighter design.

Rosemount 975HR Multi-spectrum Infrared Hydrogen

Flame Detector

Features & Benefits

 Multi spectrum design - for long distance detection of

hydrocarbons and hydrogen ames

 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)

 Multiple output options for maximum exibility and

compatibility

• Relays (3) for alarm, fault and auxiliary

• 0–20 mA (stepped)

®

• HART

• 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

-protocol for maintenance and asset

management

Applications

 Oil and gas - offshore and onsure process facilities
 Chemical plants
 Petrochemicals plants
 Storage tank farms
 Aircraft hangars
 Power generation facilities
 Pharmaceutical industry

 Automotive
 Explosives and ammunition
 Waste disposal facilities
 Hydrogen fuel cell industry

Rosemount 975HR Multi-spectrum Infrared Hydrogen Flame Detector

Specifications

Table 1 - Rosemount 975HR Multi-spectrum Infrared Hydrogen Flame Detector

General specifications

Spectral response Multi IR bands

Detection range

(at highest sensitivity setting for

0.1 m2 (1 ft2) pan re)

Response time Typically 5 s
Adjustable time delay Up to 30 s

Sensitivity ranges 4 sensitive ranges for 0.1 m2 (1 ft2) n-heptane pan re from 15 m (50 ft) to 65 m (215 ft)
Field of view Horizontal 67°, vertical 70° for gasoline

Built-in-test (BIT) Automatic (and manual)

Temperature range Operating: -55 ˚C to +75 ˚C (-67 ˚F to +167 ˚F)

Humidity Up to 95 % non-condensing (withstands up to 100 % relative humidity for short periods)
Heated optics To eliminate condensation and icing on the window

Electrical specifications

Operating voltage 24 Vdc nominal (18–32 Vdc)

Power consumption Standby: Max. 90 mA (110 mA with heated window)

Cable entries 2 x ¾ in. - 14 NPT conduits or 2 x M25 x 1.5 mm ISO

Wiring

Electrical input protection

Electromagnetic compatibility

Electrical interface

Outputs

Relays Alarm, fault, and auxiliary

0–20 mA (stepped) Sink (source option) conguration

HART® Protocol Optional HART communications on the 0–20 mA analog current (FSK) - used for maintenance, conguration changes

RS-485

Mechanical Specifications

Materials Stainless steel 316L with electro polish nish

Mounting Stainless steel 316L with electro polish nish

Dimensions Detector 101.5 x 117 x 157 mm (4 x 4.6 x 6.18 in.)

Weight Detector (stainless steel 316L) 2.8 kg (6.1 lb)

Environmental standards Meets MIL-STD-810C for humidity, salt and fog, vibration, mechanical shock, high temp, low temp

Water and dust IP66 and IP67 per EN 60529, NEMA 250 6P

Fuel m / ft Fuel m / ft Fuel m / ft

n-Heptane
Gasoline
Diesel fuel
JP5
Kerosene

*0.75 m (30 in.) high, 0.25 m (30 in.) width plume re
**0.5 m (25 in.) high, 0.2 m (8 in.) width plume re

Horizontal 80°, vertical 80° for hydrogen

Option: -55 ˚C to +85 ˚C (-67 ˚F to +185 ˚F)
Storage: -55 ˚C to +85 ˚C (-67 ˚F to +185 ˚F)

Alarm: Max. 130 mA (160 mA with heated window)

12–22 AWG (0.3 mm2–2.5 mm2)

According to MIL-STD-1275B

EMI/RFI protected to EN 61326-3 and EN 61000-6-3

The detector includes twelve (12) terminals with ve (5) wiring options (factory set).

SPST volt-free contacts rated 2 A at 30 Vdc

Fault: 0 +1 mA

BIT fault: 2 mA ±10 %

and asset management, available in mA source output wiring options

RS-485 Modbus compatible communication link that can be used in computer controlled installations

Tilt mount 1.0 kg (2.2 lb)

65 / 215
65 / 215
45 / 150
45 / 150
45 / 150

Ethanol
Methanol
IPA (isopropyl alcohol)
Hydrogen*
Methane*

Normal: 4 mA ±10 %

Warning: 16 mA ±5 %

40 / 135
35 / 115
40 / 135
38 / 125
45 / 150

Alarm: 20 mA ±5 %

Resistance loop: 100–600 Ω

LPG*
Polypropylene pellets
Ammonia**
Silane**

Ofce Paper

45 / 150
35 / 115
18 / 60
7 / 2
25 / 82

January 2018

2 www.Emerson.com/FlameGasDetection

January 2018

Rosemount 975HR Multi-spectrum Infrared Hydrogen Flame Detector

Approvals

Hazardous Area ATEX and IECEx II 2 G D or Ex 2 G D

Performance EN 54-10 (VdS)

Reliability IEC 61508 - SIL 2 (TÜV)

Accessories

Flame simulator kit 00975-9000-0013

Tilt mount 00975-9000-0001

Duct mount 00975-9000-0002

U-bolt/pole mount 00975-9000-0007 (2 in. pole)

USB RS485 harness kit 00975-9000-0011

Weather protector Plastic: 00975-9000-0003

Air shield 00975-9000-0005

Cone viewer kit 00975-9000-0006

Ex db eb op is IIC T4 Gb Ex db eb op is IIC T4 Gb
Ex tb op is IIIC T96°C Db Ex tb op is IIIC T96 °C Db

(Ta -55°C to +85°C) 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

FM 3260

00975-9000-0008 (3 in. pole)

Stainless steel: 00975-9000-0004

3www.Emerson.com/FlameGasDetection

Rosemount 975HR Multi-spectrum Infrared Hydrogen Flame Detector-

FGD-PDS-975HR

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Emerson Automation Solutions

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Latin America Regional Office

Emerson Automation Solutions

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Sunrise, FL 33323, USA

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[email protected]

Product Data Sheet

January 2018

Europe Regional Office

Emerson Automation Solutions Europe GmbH

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CH 6340 Baar
Switzerland

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