Overview
The BSH623U module is an intelligent refrigerant detection module based on infrared principle. It uses the Non – Dispersive Infrared (NDIR) principle to detect refrigerants, featuring excellent selectivity and no oxygen dependence. This module is a compact and high – performance product made by closely integrating mature infrared absorption gas detection sensors with micro – mechanical processing and sophisticated circuit design. It is easy to use and has excellent performance.
Key Features
- High sensitivity, high resolution, and fast response time.
- RS485 communication and relay control.
- Temperature compensation, excellent linear output, outstanding stability, long service life.
- Resistant to water vapor interference, non – poisoning, and can directly replace catalytic combustion principle modules.
Applications
- HVAC refrigeration.
- Industrial process and safety protection monitoring.
Technical Specifications
| Parameter | Value |
| Model | BSH623U |
| Target gas | R32/R454B/R290 |
| Warm – up time | 15s |
| Communication mode | RS485/UART (PWM customizable) |
| Detection range | 0 – 50%LFL |
| Response time | R32/R454B: < 10s; R290: < 15s |
| Resolution | 0.1%LFL |
| Working voltage | 24±1V DC |
| Working temperature | – 40 to 85 °C |
| Interface mode | XH – 6P |
| Average current | < 30mA |
| Working humidity | 0 – 100%RH |
| Size (L×W×H) | 63.1×54.1×25.5mm |
| Weight | 45g |
| Life span | > 15 years |
