Rosemount™ 625ND Infrared Combustible Gas Sensor

Accurate, Low-Maintenance %LEL Detection with Smart Sensor Technology

The Rosemount™ 625ND Infrared Gas Sensor delivers precise and stable %LEL combustible gas detection using non-dispersive infrared (NDIR) technology. Engineered for compatibility with the Rosemount 925 Fixed Gas Detector, this smart sensor offers a combination of field-ready durability, low maintenance, and exceptional response time—ideal for protecting personnel and assets in hazardous industrial environments.

Whether you need to detect methane, ethane, propane, ethylene, or butane, the Rosemount 625ND provides early leak detection, helping improve safety while supporting sustainability goals through reduced emissions.

Key Features:

• Advanced NDIR Sensing Technology: Delivers fast and accurate detection of a wide range of hydrocarbon gases from 0–100% LEL.
• Pre-Calibrated & Field-Ready: Sensors can be factory-calibrated to specific target gases and installed on-site without recalibration—ideal for remote or distributed operations.
• Digital Communication with Rosemount 925: When paired with the 925 transmitter, the sensor maintains continuous digital communication for stable, real-time readings and fault diagnostics.
• Smart Sensor Module: Retains configuration settings and calibration data, allowing plug-and-play installation and off-site calibration to minimize downtime.
• Reduced Maintenance & Extended Life: Longer calibration intervals reduce labor costs and improve total system uptime.
• Built for Harsh Conditions: Operates in extreme temperatures (-40 to +70 °C) with high humidity tolerance and is certified to meet global hazardous area standards.

Available: BC, AB, SK

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