Rosemount™ 965 Flame Detector

The Rosemount™ 965 Flame Detector is designed for fast, reliable hydrocarbon fire detection in industrial, commercial, and critical infrastructure environments. Using Emerson’s QuadSense™ triple infrared technology, the Rosemount 965 Flame Detector detects hydrocarbon flames up to 150 ft. / 45 m while helping reduce false alarms from common non-fire sources.

With a typical response time of less than 5 seconds, five selectable sensitivity levels, HART® communication, RS-485 Modbus® compatibility, analog output, relay outputs, and infrared built-in test functionality, the Rosemount 965 is built for dependable flame detection in applications where early warning and system reliability are essential.

The detector is factory-calibrated for life and has a 150,000-hour lifespan, helping reduce routine maintenance while supporting long-term uptime. Its low-copper aluminum housing, wide operating temperature range, and strong environmental ratings make it suitable for demanding Canadian industrial environments.

Westech Industrial supplies the Rosemount 965 Flame Detector in British Columbia, Alberta, and Saskatchewan, supporting customers with product selection, fire and gas detection expertise, service capabilities, and custom fabrication solutions for integrated safety systems.

Rosemount™ 965 Flame Detector

Quantity

PRODUCT FEATURES

REQUEST FOR INFORMATION

Description

Fast Hydrocarbon Flame Detection

The Rosemount 965 Flame Detector detects hydrocarbon fires up to 150 ft. / 45 m. Detection distance depends on the fuel source, fire size, sensitivity setting, and site conditions. As a result, facilities can monitor larger areas with strong flame detection coverage. It also responds quickly, with typical detection in less than five seconds.

QuadSense™ Triple Infrared Technology

QuadSense™ IR3 technology uses multiple infrared bands to identify hydrocarbon flame signatures. Therefore, the detector can separate real flame events from many nuisance sources. This helps improve site safety while reducing false alarms and unnecessary shutdowns. In addition, the technology supports dependable monitoring in busy industrial and commercial environments.

Factory-Calibrated for Life

The detector arrives factory-calibrated for life. Because of this, maintenance teams can reduce routine calibration work. This also helps facilities lower service demands and support long-term reliability. Over time, this feature can help maximize uptime in critical fire and gas detection systems.

150,000-Hour Lifespan

The Rosemount 965 Flame Detector offers a 150,000-hour lifespan. This long service life supports reliable operation in demanding applications. It also helps reduce replacement planning concerns for safety teams. As a result, facilities can standardize on a detector built for long-term performance.

Five Selectable Sensitivity Levels

The detector includes five selectable sensitivity levels for different monitoring distances. Users can configure ranges from 9.8 ft. / 3 m to 147.6 ft. / 45 m. This flexibility helps match detector performance to site layout and hazard location. It also supports more accurate coverage planning for varied applications.

Built-In Test Functionality

Infrared built-in test technology continuously checks the detector’s optics and electronics. Therefore, the Rosemount 965 Flame Detector can help verify its own operating condition. This ongoing self-checking supports confidence in critical safety applications. It also helps maintenance teams identify issues before they affect performance.

Flexible Communication and Output Options

The Rosemount 965 supports 0–20 mA analog output, HART® communication, RS-485 Modbus®, and relay outputs. These options help users connect the detector to many fire and gas systems. In addition, HART® communication supports remote monitoring, maintenance, configuration changes, and asset management.

Designed for Demanding Environments

The detector operates from -40 to +158 °F / -40 to +70 °C. Therefore, it can support demanding Canadian industrial conditions. Its enclosure ratings include IP66, IP68, EN60529, NEMA 250 6P, and UL50E Type 4X. These ratings help protect the detector against harsh outdoor and industrial environments.

Performance Certified

The Rosemount 965 Flame Detector meets important performance standards, including EN54-10, ULC/ORD-C386-15, and FM3260. These certifications support use in applications that require proven flame detection performance. For hazardous area locations, users should select explosion-proof certified models where required.

Applications

The Rosemount 965 Flame Detector is suitable for a wide range of industrial, commercial, and infrastructure applications where hydrocarbon flame detection is required.

Common applications include oil and gas onshore and offshore installations, pipelines, chemical and petrochemical plants, storage tank farms, power generation facilities, hazardous materials storage areas, fertilizer plants, waste management facilities, warehouses, manufacturing facilities, food processing plants, transportation terminals, aircraft hangars, parking structures, hospitals, data centers, archives, public buildings, cable tunnels, and historical or cultural sites.

For hazardous area locations, explosion-proof certified models should be used where required by the application and site classification.

Documents

Rosemount-965-flame-detector_Datasheet_en-May2026_Westech.pdf

Manufacturer info

Emerson’s tireless pursuit of innovation drives the Rosemount™ portfolio of superior quality measurement and analytical technologies to provide customers with insight across all touchpoints needed to operate efficiently, safely, and with peace of mind. https://www.emerson.com

SPECS

Detection range:
Up to 150 ft. / 45 m for gasoline and n-heptane fires at the highest sensitivity setting for a 1 ft² / 0.1 m² pan fire.
Detection technology:
QuadSense™ triple infrared flame detection using four infrared bands between 4 μm and 5 μm.
Response time:
Typically less than 5 seconds.
Sensitivity settings:
Five selectable ranges of 9.8 ft. / 3 m, 32.8 ft. / 10 m, 65.6 ft. / 20 m, 98.4 ft. / 30 m, and 147.6 ft. / 45 m.
Field of view:
Horizontal field of view is 100° at 50% of maximum distance. Vertical field of view is 95° at 50% of maximum distance.
Operating temperature:
-40 to +158 °F / -40 to +70 °C.
Storage temperature:
-40 to +158 °F / -40 to +70 °C.
Humidity:
Non-condensing relative humidity up to 100%.
Operating voltage:
24 Vdc nominal, with a range of 12 to 32 Vdc.
Power consumption:
Typical normal power consumption is 25 mA / 0.6 W at 24 Vdc.
Communication and outputs:
0–20 mA analog output, HART® communication, RS-485 Modbus® compatible communication, and relay outputs.
Relay ratings:
Fault relay normally closed and alarm relay normally open, with SPST volt-free contacts rated 2 A at 30 Vdc.
Built-in test:
Infrared built-in test for continuous verification of optics and electronics.
Cable entry:
1 x M20.
Electrical interface:
9 terminals and a single cable conduit.
Housing material:
Low-copper aluminum with polyurethane-painted finish.
Mounting material:
Stainless steel 316.
Dimensions:
Detector dimensions are 4.25 x 3.15 x 4.64 in. / 108 x 80 x 118 mm.
Weight:
Detector weight is 1.65 lb. / 0.75 kg. Stainless steel tilt mount weight is 1.54 lb. / 0.7 kg.
Enclosure ratings:
IP66, IP68, UL50E Type 4X, EN60529, and NEMA 250 6P.
Performance certifications:
EN54-10, ULC/ORD-C386-15, and FM3260.
Available accessories:
Flame simulator, stainless steel tilt mount, pole mount assemblies, bracket, USB RS-485 harness kit, air shield, cable, cone viewer, and cone of view limiter.
Availability:
British Columbia, Alberta, and Saskatchewan.

Related products

PRODUCT FAQ's

What is the Rosemount 965 Flame Detector used for?
The Rosemount 965 Flame Detector is used to detect hydrocarbon flames in industrial, commercial, and critical infrastructure environments. It is commonly used in oil and gas facilities, chemical plants, storage tank farms, power generation sites, manufacturing facilities, transportation hubs, warehouses, data centers, parking structures, aircraft hangars, hospitals, and public buildings.
How far can the Rosemount 965 detect a hydrocarbon fire?
The Rosemount 965 can detect certain hydrocarbon fires up to 150 ft. / 45 m, depending on the fuel type, fire size, sensitivity setting, and environmental conditions. It includes five selectable sensitivity levels, allowing the detector to be configured for different monitoring distances.
What technology does the Rosemount 965 use?
The Rosemount 965 uses QuadSense™ triple infrared technology. This multi-spectrum infrared approach helps the detector identify hydrocarbon flame signatures while reducing the likelihood of false alarms caused by non-fire sources.
Does the Rosemount 965 require calibration?
The Rosemount 965 is factory-calibrated for life, which helps reduce ongoing calibration requirements. It also includes infrared built-in test functionality to continuously verify the integrity of the detector’s optics and electronics.
What output options are available with the Rosemount 965?
The Rosemount 965 includes 0–20 mA analog output, HART® communication, RS-485 Modbus® compatible communication, and relay outputs. These options make it easier to integrate the detector into new or existing fire and gas detection systems.
Can the Rosemount 965 be used outdoors?
Yes. The Rosemount 965 is designed for demanding environments, with an operating temperature range of -40 to +158 °F / -40 to +70 °C and enclosure ratings including IP66, IP68, EN60529, NEMA 250 6P, and UL50E Type 4X.
Where is the Rosemount 965 Flame Detector available through Westech Industrial?
Westech Industrial supplies the Rosemount 965 Flame Detector in British Columbia, Alberta, and Saskatchewan. Our team can help customers determine if this detector is suitable for their specific flame detection application.
Does Westech Industrial provide service support for Rosemount flame detectors?
Yes. Westech Industrial provides fire and gas detection support, including product selection, application guidance, troubleshooting assistance, and service capabilities. Our team can help customers maintain reliable safety monitoring systems and support proper integration with existing plant infrastructure.
Can Westech Industrial help with custom fabrication for fire and gas detection systems?
Yes. Westech Industrial can support custom fabrication requirements for fire and gas detection projects, including panels, assemblies, shelters, and integrated solutions. This is especially helpful for customers who need flame detectors, gas detection equipment, horns, lights, control panels, or other safety system components packaged into a site-specific solution.