

MH-441D-454B NDIR Infrared Refrigerant Sensor
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Ang MH-441D-454B is a compact high-performance NDIR refrigerant sensor designed for detecting 454B refrigerant. With superior accuracy, selectivity, and oxygen independence, it provides fast and stable detection. Its advanced infrared absorption gas detection technology ensures long-term reliability in HVAC and industrial safety applications.
Category: R454B Refrigerant Leak Sensor
Tags: NDIR, R454B
- Description
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Description
Ang MH-441D-454B is a compact high-performance NDIR refrigerant sensor designed for detecting 454B refrigerant. With superior accuracy, selectivity, and oxygen independence, it provides fast and stable detection. Its advanced infrared absorption gas detection technology ensures long-term reliability in HVAC and industrial safety applications.
Key Features
✔ High Sensitivity & Fast Response – Detects refrigerant leaks efficiently.
✔ Dual Output Options – UART & Analog Voltage Signal.
✔ Temperature Compensation & Excellent Stability – Ensures precise readings.
✔ Anti-Poisoning & Vapor Resistance – Designed for harsh environments.
✔ Mahabang Habang-buhay – Provides stable performance for over 5 years.
✔ Direct Replacement for Catalytic Sensors – Easy integration into existing systems.
Mga aplikasyon
🔹 HVAC Refrigeration – Leak detection and refrigerant safety monitoring.
🔹 Industrial Process Control & Safety Protection – Essential for hazardous environments.
Technical Specifications
| Model | MH-441D-454B |
|---|---|
| Detection Gas | 454B |
| Detection Method | NDIR (Non-Dispersive Infrared) |
| Detection Range | 0~5.00% Vol |
| Resolution | 0.01% Vol |
| Accuracy | ± 5% F.S. (0.00% – 1.00%), ± 10% F.S. (1.00% – 5.00%) |
| Working Voltage | 3.6~5V DC (Requires safety barrier) |
| Average Current | < 85mA |
| Interface Level | 3.0V |
| Output Signal | UART (3.0V), 0.4~2.0V DC (Requires safety barrier) |
| Preheat Time | 3 min |
| Response Time | T90 < 30s |
| Operating Temperature | -20°C ~ 60°C |
| Operating Humidity | 0 ~ 95% RH (No condensation) |
| Defense Grade | IP54 |
| Power & Communication Safety | Ui=7.5VDC, Ii=265mA, Pi=0.5W, Ci=10μF, Li=0mH |
| Dimensions | Φ20 × 22.4 mm |
| Weight | 35 g |
| Lifespan | > 5 years |
📢 For the latest product details and availability, please contact us!
Additional information
| Mga aplikasyon | HVAC, Industrial Process, Safety Monitoring |
|---|---|
| Detection Gas | R454B |
| Output | Analog Voltage Signal, UART |
| Prinsipyo | NDIR |
| Uri ng Produkto | Sensor |






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