Overview
SM-024WD5 pyro-electric flame sensor uses lithium tantalate single crystal as the sensitive element material. The Curie temperature of lithium tantalate crystal material is above 600°C, the relative dielectric constant is small, and the specific detectivity is high.
In a wide range of room temperature, the pyroelectric coefficient of the material changes very little with temperature, and the temperature change rate of the output signal is only 1-2‰. The temperature stability of the sensor performance is very good, and the spectral response consistency is very good in the wavelength range of 1-20um.
Key Features
- 4.4um detection band;
- TO-5 package, single channel, voltage mode;
- Low microphone effect, large FOV, high detection rate;
- Detection band measurement of flame signal;
Applications
- It’s widely used in various oil storage stations, large warehouses, factory workshops, forests, charging piles; and standard configuration for high fire risk areas such as petroleum, chemical, paper-making, forests, and garages.
- It also becomes popular in high-end residential, commercial, and general industrial fields.
Technical Specifications
| Item | Typical | Unit |
| Window Size | 5.0*5.0 | mm |
| Sensitive element size | Φ2.5 | mm |
| Filter center wavelength | 4.4 | um |
| Electrical time constant | 5 | s |
| Thermal time constant | 200 | ms |
| Source Voltage | 0.4~0.7 | v |
| Working Voltage | 2~15 | v |
| Recommended voltage | 3~5 | v |
| Output signal V0 (500K,10HZ,25°C) | 4.5±10% | v |
| Output noise voltage VN (10HZ, BW1HZ, 25°C) | ≤150 | mv |
| Voltage response rate (no window) Rv (500K, 10HZ, 25°C) | ≥500 | v/w |
| Specific detection rate (no window) D* (500K, 10HZ, BW1HZ, 25°C) | ≥5×108 | cmHz1⁄2/W |
| Field of view(FOV) | >115 | ° |
| Detection distance | 35~50 | m |
| Working temperature | -30~+75 | °C |
| Storage temperature | -40~+80 | °C |
| Remarks: The magnification of the testing machine is 80dB. |
