The Rosemount 965 uses Multi-Spectrum Infrared Flame Detection with QuadSense™ technology to accurately analyze the multi-spectral signals of hydrocarbon gas or liquid fires using four infrared (IR) sensors. Its ability to differentiate flame sources from non-flame background radiation offers high immunity to false alarms for fires up to 150 ft (45 m) from the device. Five selectable sensitivity levels help you customize settings for your specific application.

Features

• Fast and reliable flame detection at up to 150 ft (45 m)
• Proven false alarm immunity
• Quick response time
• Factory calibrated for life use
• Five selectable sensitivity levels adapting to a variety of applications
• Infrared built-in test (BIT) for continuous integrity verification of optics and electronics
• HART communication
• An internal log event recorder
• Universal wiring option for a streamlined ordering process
• Multiple output options for maximum compatibility with standard infrastructures
• Two-year warranty with extended warranty option
  

Specifications

Spectral response

4 infrared (IR) bands between 4 μm and 5 μm

Response Time

Detection: Typically < 5 seconds

Sensitivity Range

3m, 10m, 20m, 30m, 45m

Field of view

Horizontal: 100° (at 50% of maximum distance)
Vertical: 95° (at 50% of maximum distance)

Temperature range

40 to +158 °F (-40 to +70 °C)

Humidity Range

Non-condensing relative humidity up to 100%

Operating voltage

24 Vdc nominal (12-32 Vdc)

Cable entries

1 x M20

Input

Electrical input protection: According to EN 50130

Electromagnetic compatibility

Electromagnetic interference (EMI)/radio frequency interference (RFI) protected to EN61000-6-3, EN61000-6-4, EN61000-6-6, and EN 50130

Interface

Electrical: 9 terminals and a single cable conduit

Output

Relays:

• Fault: Normally closed (NC)
• Alarm: Normally open (NO)
• SPST volt-free contacts rated 2 A at 30 Vdc

0-20 mA (stepped) default:

• Fault: < 1.1 mA
• Built-in test (BIT) fault: 2 mA ± 0.3 mA
• Normal: 4 mA ± 0.3 mA
• Warning: 16 mA ± 0.3 mA
• Alarm: 20 mA ± 0.3 mA

HART® protocol:

• HART communication on the 0-20mA analog current (FSK) used for maintenance, configuration changes, and asset management, available in mA source output wiring options.

RS-485:

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