Description
| AM4205 NDIR A2L & A3 Refrigerant Sensor Specifications | |
| Detecting principle | NDIR (non-dispersive infrared) technology |
| Measurement gas | R32/R454B/R454C/R454A/R290/R1234ze |
| Measurement range | 0~50% LFL (Extendable up to 100% LFL) |
| Accuracy | ±2.5% LFL (@15%~25%LFL,-30~60℃) |
| Working temperature | -30～60℃ |
| Dimensions | 76.8 *59.2 *19 (mm) |
| Communication | UART_TTL (3.3V), 0.8-4V Analog, 4~20mA (customized) |
| Lifetime | >15years, fault alarm before EOL will report |
| Certificate Conformity | CE, EMC, RoHS, Reach Certificate Available
Comply with IEC 60079-1, UL 60335-2-40 4th. |
| Technology Comparison | ||||
| Key Features | NDIR | Metal-Oxide-Semiconductor | Thermal Conductivity | Comparison |
| Selectivity | Excellent | Poor | Fair | NDIR has excellent selectivity
MOS easily is poisoned and impacted by interference gas |
| Accuracy | Excellent | Fair | Fair | NDIR Matrix calibration to ensure accuracy
MOS and TC sensitive to temperature and humidity change |
| Response | Excellent | Fair | Poor | NDIR has a fast response
MOS slow recovery rate, extended preheating time |
| Temperature and Humidity Impact | No Impact | Accuracy Easily Influenced | Accuracy Easily Influenced | TC easily impacted by temperature and humidity |
| Life time | Excellent | Poor | Fair | NDIR long-term stability, no false alarms
MOS short life time, possible for false alarms TC has relatively longer life time than MOS, but still shorter than NDIR |
| UL60335 compliance | Fully Compliant | Not Fully
Compliant |
Not Fully
Compliant |
Cubic NDIR sensor could fully comply with UL60335 & EN60079
Neither MOS or TC is comply with UL60335-2-40 Annex LL |
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