A2L refrigerant refrigerant gas sensor RGD series

R454BR32infrared

Overview
A2L integrated refrigerant detection system for OEM HVAC and refrigeration applications. Operates from a 9–30 VDC supply and supports Modbus RS485 communication with dual-relay output for system integration.

Features
Equipped with Modbus RS485 and a dual relay output for straightforward integration into HVAC and refrigeration equipment. Designed to meet UL60335-2-40 ed. 4 and UL60335-2-89 requirements. No calibration required during normal operation. Compatible with R32, R454 series and R455 series refrigerants. Built-in temperature and humidity compensation sensors ensure accurate detection across varying environmental conditions and specified performance up to +85°C.

Models and key data

• RGD-00RH00 — Refrigerant: R32 — Input: 9–30 VDC* — Output: Modbus RS485 + Relay
• RGD-02RH00 — Refrigerant: R454B — Input: 9–30 VDC* — Output: Modbus RS485 + Relay
• RGD-03RH00 — Refrigerant: R454C — Input: 9–30 VDC* — Output: Modbus RS485 + Relay
• RGD-04RH00 — Refrigerant: R454A — Input: 9–30 VDC* — Output: Modbus RS485 + Relay
• RGD-10RH00 — Refrigerant: R455A — Input: 9–30 VDC* — Output: Modbus RS485 + Relay
• RGD-20RH00 — Refrigerant: R32 + R454B — Input: 9–30 VDC* — Output: Modbus RS485 + Relay
• RGD-30RH00 — Refrigerant: R454A + R454C + R455A — Input: 9–30 VDC* — Output: Modbus RS485 + Relay

Related resources (titles only)
Brochure: Sensata Resonix TM Refrigerant Leak Detection System Product Highlight
Application Note: Detecting A2L Refrigerant Leaks in HVAC/R Systems
Application Note: A2L Leak Detection in Commercial Refrigeration
White Paper: A2L and New Refrigerant Strategies Take Holistic View of Environmental Impacts
White Paper: Expansion of A2L-Driven Systems Shows Continued Growth of Solution

Technical specifications

• Series: RGD Series with IRDS
• Part numbers: RGD-00RH00, RGD-02RH00, RGD-03RH00, RGD-04RH00, RGD-10RH00, RGD-20RH00, RGD-30RH00
• Supported refrigerants: R32, R454A, R454B, R454C, R455A and listed combinations
• Input voltage range: 9–30 VDC
• Output types: Modbus RS485 and dual relay
• Relay availability: Relay output available only with supply voltage > 9 VDC
• Calibration: No calibration required (long lifetime)
• Environmental compensation: Temperature and humidity compensation sensors included
• Operating temperature: specified accuracy up to +85°C
• Standards: Designed to meet UL60335-2-40 ed. 4 and UL60335-2-89
• Integration: OEM-oriented design for HVAC and refrigeration equipment