S301-IRF-R123 | Honeywell Infrared Refrigerant Gas Sensor 0–1000 PPM

Honeywell · Sensors & Instrumentation

Description  The Honeywell S301-IRF-R123 is an infrared refrigerant gas analytics module designed for use with the 301EM-20 controller and SQN8X systems. It detects refrigerants within a 0–1000 ppm range with 1 ppm resolution and provides a 4–20 mA output for system integration. Engineered for continuous monitoring, it supports accurate leak detection in commercial and industrial mechanical rooms.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category Gas Detection Part Number S301-IRF-R123 Subcategory Refrigerant Gas Sensors Sensing Technology Dual Infrared (IR) Measurement Range 0–1000 ppm Resolution 1 ppm Deadband 20 ppm Accuracy ±40 ppm @ 500 ppm Signal Output 4–20 mA, 1000Ω @ 24 VDC Communication RS-485, Modbus Supply Voltage (AC) 22–27 VAC @ 48 VA, 50/60 Hz Supply Voltage (DC) 22–38 VDC @ 2 A max Response Time 60 seconds Relay Output (4) DPDT relays, 5A @ 30 VDC or 250 VAC (resistive) Audible Alarm 65 dBA @ 3 ft (1 m) Calibration Interval 6 Months Operating Temperature -40°F to 104°F (-40°C to 40°C) Operating Humidity 0–95% RH (Non-Condensing) Enclosure Rating NEMA 1 Compatibility 301EM-20, SQN8X Weight 2.0 lb   Information About S301-IRF-R123 The S301-IRF-R123 is a Honeywell Analytics refrigerant gas sensor module utilizing dual infrared sensing technology for stable and selective detection performance. It is compatible with Honeywell 301EM-20 controllers and SQN8X platforms, communicating via 4–20 mA output and RS-485 Modbus networks. The sensor operates on 22–27 VAC at 48 VA (50/60 Hz) or 22–38 VDC at 2 A maximum and supports transmitter distances up to 500 feet depending on configuration. Designed for multi-gas refrigerant monitoring, it provides a measurement range of 0–1000 ppm with a 20 ppm deadband and recommended 6-month calibration interval. Key Features: Infrared Refrigerant Detection: Dual IR sensor technology for stable and selective gas monitoring. 0–1000 ppm Measurement Range: Suitable for low-level leak detection in mechanical spaces. 1 ppm Resolution: Enables precise gas concentration monitoring. 4–20 mA Output: Standard analog signal for integration with control systems. RS-485 Modbus Communication: Supports networked monitoring applications. Multi-Gas Compatibility: Detects R11, R12, R123, R125, R134A, and R22 refrigerants. Visual & Audible Alarms: LED status indicators and 65 dBA internal audible alert. NEMA 1 Enclosure: Designed for indoor commercial installations. The S301-IRF-R123 delivers the reliability and precision required for refrigerant leak detection and environmental safety monitoring in commercial HVAC and industrial facilities.

Brand: Honeywell · Category: Sensors & Instrumentation

Key features

• Infrared Refrigerant Detection: Dual IR sensor technology for stable and selective gas monitoring.
• 0–1000 ppm Measurement Range: Suitable for low-level leak detection in mechanical spaces.
• 1 ppm Resolution: Enables precise gas concentration monitoring.
• 4–20 mA Output: Standard analog signal for integration with control systems.
• RS-485 Modbus Communication: Supports networked monitoring applications.
• Multi-Gas Compatibility: Detects R11, R12, R123, R125, R134A, and R22 refrigerants.
• Visual & Audible Alarms: LED status indicators and 65 dBA internal audible alert.
• NEMA 1 Enclosure: Designed for indoor commercial installations.

Specifications

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