价 格: | 面议 | |
型号/规格: | C3704 | |
品牌/商标: | HAMAMATSU |
R2868日本HAMAMATSU公司生产的火焰传感器和传感器应用电路板。
Compact UV Sensor with High Sensitivity and Wide Directivity,
Suitable for Flame Detectors and Fire Alarms.
Hamamatsu R2868 is a UV TRON ultraviolet detector that makes use of the photoelectric effect of metal and the gas multiplication effect. It has a narrow spectral sensitivity of 185 to 260 nm, being completely insensitive to visible light. Unlike semiconductor detectors, it does not require optical visible-cut filters, thus making it easy to use.
In spite of its small size, the R2868 has wide angular sensitivity (directivity) and can reliably and quickly detect weak ultraviolet radiations emitted from flame due to use of the metal plate cathode (eg. it can detect the flame of a cigarette lighter at a distance of more than
The R2868 is well suited for use in flame detectors and fire alarms, and also in detection of invisible discharge phenomena such as corona discharge of high-voltage transmission lines.
APPLICATIONS
★ Flame detectors for gas/oil lighters and matches
★ Fire alarms
★ Combustion monitors for burners
★ Inspection of ultraviolet leakage
★ Detection of discharge
★ Ultraviolet switching
GENERAL
Spectral Response185 to 260nm
Window Material UV glass
Weight Approx.
MAXIMUM RATINGS
Supply Voltage 400Vdc
Peak Current 30mA
Average Discharge Current 1ma
Operating Temperature -20 to +
CHARACTERISTICS (at
Discharge Starting Voltage (with UV radiation) 280Vdc Max.
Recommended Operating Voltage 325±25Vdc
Recommended Average Discharge Current 100μA
Background 10cpm Max
Sensitivity 4)5000cpm Typ.
HB100微波探测传感器应用Doppler Radar原理,发射一个低功率微波并接受物体反射过来的能量。一旦物体的运动被其探测到。发射频率就被反射回的微波频率所替代,替代的微波与发射的微波混合在一起,结果一个低频率的电压从传感器输出。微波探测传感器的特性: 1、 非接触式。 2、 周围环境:不受热、嗓音、湿度、气流、尘埃等影响,适合恶劣环境。 3、 抗干扰。 4、 安全。 5、 宽范围。探测范围超过15米。更宽的范围亦可能。 如下参数是在5VDC, CW 工作状态, 12KΩ负载, +25℃下测定。 参数 备注 最小值 典型值 值 单位 频率 1 10.520 10.525 10.530 GHz 辐射功率 1 12 15 20 dBm Spurious Emission @ 3m 1 25 μV/m Settling Time 3 6 μSec Received Signal Strength 2 100 250 μVp-p Noise 3 5 μVrms Supply Voltage 4.75 5.00 5.25 VDC Current Consumption 30 40 mA ...