Refrigerant detection sensor 'SGD43S-M3-S5'
A2L refrigerant detection sensor "SGD4x" series! Introduction to a complete refrigerant detection system.
The "SGD43S-M3-S5" is a flexible and comprehensive refrigerant leak detection system for HVAC systems. It is based on the principle of thermal conductivity measurement and features dual relay contact outputs that enable the activation of the blower, turning off the load, and sending alerts to the control panel by operating a signal relay. Additionally, it provides quick visual feedback through a status display LED, achieving easy integration and a design considerate of installers. 【Specifications (partial)】 ■ Refrigerants: R-32, R-454B (dual calibration) ■ Connector port: 8-pin sealable connector ■ Accuracy under ambient conditions: ±2.5% LFL ■ Response time: 30.0s ■ Lifespan: > 15 years ■ Compliance: UL 60335-2-40 (4th edition) *For more details, please refer to the related links or feel free to contact us.
basic information
【Other Specifications (Partial)】 ■ Supply Voltage: 24V ■ Operating Temperature Range [°C]: -40 - 85°C ■ Operating Temperature Range [°F]: -40 - 185°F ■ Interface: ModBus, RS485 ■ Size (LxWxH): 90 x 55 x 24 mm ■ Size (LxWxH) [inch]: 3.54 x 2.17 x 0.94 inch *For more details, please refer to the related links or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please refer to the related links or feel free to contact us.
catalog（1）
Download All Catalogs
News about this product（2）
-
Optimal HVAC solution for A2L refrigerant leak detection: "SGD43S-M3-S5"
Sensirion's "SGD43S-M3-S5" is a robust refrigerant leak detection system designed for HVACR (heating, ventilation, air conditioning, and refrigeration) applications. It utilizes Sensirion's proprietary thermal conductivity technology to achieve high-precision detection for A2L refrigerants (R-32, R-454B). ■ Features - Over 15 years of design life: Maintenance-free with long-term stable operation - Harsh environment compatibility: Operates in -40°C to 85°C, 0 to 100% RH, and 80 to 110 kPa - Easy integration: Dual relay output, RS-485 interface, and mounting bracket included - Self-diagnostic function: Detects faults and lifespan, notifying via relay and LED - Multi-refrigerant compatibility: Detects R-32 and R-454B with a single calibration - Compliance with safety standards: UL 60335-2-40, UL 60335-2-89, RoHS compliant ■ Target Users HVAC design engineers considering the transition to A2L refrigerants For product specifications and case studies, please contact us or use the document download option.
-
Sensirion's refrigerant leak detection system "SGD43S-M3-Sx" has been officially certified by UL Solutions.
The Sensirion refrigerant leak detection system "SGD43S-M3-Sx" has been certified by UL Solutions (UL60355-2-40). This allows us to provide our customers with a rational UL-certified sensor module that responds to the evolution of refrigerant regulations. The SGD43S-M3-Sx is specially designed as a complete refrigerant detection system (RDS) for the HVACR industry. It is based on the principle of thermal conductivity measurement and features dual relay contact outputs that activate signal relays to enable the startup of blowers, turn off loads, and send alerts to control panels. The status display LED provides quick visual feedback, facilitating easy integration and a user-friendly design for installers. "SGD43S-M3-S5" offers dual calibration in a single device to monitor R-454B and R-32 refrigerant leaks for HVAC applications. "SGD43S-M3-S7" provides triple calibration in a single device primarily for monitoring R-454A, R-454C, and R-455A refrigerant leaks in refrigeration applications. For more details, please check the product page.
Recommended products
Distributors
Sensirion's mission is to provide sensors and sensor solutions with excellent design and reliability, becoming the number one partner for our customers. We aim to elevate the standards of sensor technology by leveraging technology intelligence. In doing so, we contribute to improving the sustainability, efficiency, health, safety, and quality of life for people and businesses. We pursue a common goal of shaping the future of the automotive industry, industrial sectors, building and HVAC technology, medical technology, and consumer electronics through innovation in collaboration with our partner companies and customers. Sensirion was founded in 1998 and currently has about 1,000 employees at its headquarters in Stäfa, Switzerland, and numerous subsidiaries around the world.