ZLL
CDG0821A Hall Speed Sensor
delivery time:2 weeks
product description
◎Dual-channel speed sensor based on Hall effect
◎True zero speed signal output
◎Electrical isolation between channels
◎Wide range of speed measurement, strong anti-interference and anti-vibration shock ability
◎For CRH380A EMU ATP system
Environmental characteristics
◎Relative humidity: ≤95% (the monthly average minimum temperature is 25℃)
◎Working temperature: -40℃～+125℃
◎Vibration and shock: meet the requirements of GB/T21563-2008 category 3 axle installation
◎Protection level: IP68 (5bar, 1h)
technical parameter
◎Working power supply (Vb): DC 15V～30V (rated voltage 24V)
◎Frequency range of output signal: 0～20kHz
◎Working air gap: 0.3mm～1.5mm (standard installation air gap 1mm)
◎Output waveform: square wave, rising and falling swing rate ≥3.5V/us
◎Number of output channels: 2 channels, electrical isolation
◎High level: 12.3 (1±5%) V or ≥Ub-2.8V (full load), low level≤0.5V
◎Duty ratio: (50±20)%
◎Phase difference: 90°±30°
◎Consumption current (no load): ≤30mA
◎Dielectric strength (between all wires and shell): AC 3000V[50Hz 60s]
◎Insulation resistance (between all wires and shell): ≥100MΩ (1000V megohmmeter)
◎Protection function: power supply polarity protection, output short circuit protection
