Honeywell S301-IRF-R134A R134a Refrigerant Gas Sensor

The Honeywell S301-IRF-R134A is an infrared refrigerant gas sensor specifically designed for detecting R134a refrigerant leaks in commercial HVAC and chiller room applications. This sensor features a discreet design with rugged ABS-polycarbonate housing, making it ideal for direct mounting to chiller pads or low on nearby walls to provide early leak detection and notification.

Key Features:

• Infrared sensing technology for accurate and prompt R134a detection
• Low-profile design suited for mounting directly to chiller pad or low on wall
• Detection range: 0-1000 ppm with sensitivity as low as 0.5 ppm
• Operating temperature range: 32° to 100°F (0° to 40°C)
• Operates on 10-12 VDC power, 700 mA
• Low maintenance infrared technology for long-lasting reliability
• ASHRAE 15-2001 and B-52 Code compliant for mechanical room safety
• Weatherproof construction for harsh environment durability

Installation Requirements:

• Requires Honeywell 301EM-20 controller for operation (sold separately)
• Can be installed up to 200 feet from controller
• Connects via RS-485 Modbus communication
• Remote monitoring and alarm activation through 301EM controller

This sensor provides a complete solution for meeting rigorous ASHRAE and B-52 safety standards designed to protect mechanical room personnel and minimize environmental risk. When paired with the 301EM controller, the system can automatically activate fans, horns, and strobe alarms when refrigerant is detected, ensuring rapid response to potential leaks.