Application and Pin Definition
To comply with legal vehicle emission limits, maintaining a constant and accurate air-to-fuel ratio is essential. This sensor ensures that the actual air flow and output frequency signals remain consistent, enabling both open and closed-loop control circuits through electrical signals.
Pin Definition
- VCC: Positive power supply
- GND: Negative power supply
- RF: Reference frequency of 19 Hz
- Vout: Frequency/voltage output
CAFS1000C Wide Flow Rate Range: 0-60 m/s High Impact Resistance: Withstands 100g impact, commonly known as an air flow meter, is a crucial component in modern automotive electronic control fuel injection systems (EFI). Typically installed in the intake tract between the air filter and throttle body, this sensor measures the amount of air being drawn into the engine. The output signal from the sensor is a primary parameter for controlling fuel injection in the engine management system, directly influencing the engine's power performance, fuel economy, and emission standards.
To achieve the optimal fuel mixture concentration under various operating conditions, the EFI engine must accurately measure the intake air volume in real-time and calculate the necessary fuel injection using the electronic control unit (ECU). Consequently, the air flow sensor is vital for improving energy efficiency and reducing pollutant emissions in modern vehicles.
The CAFS1000C Series has been widely adopted in the automotive and related industries due to its high reliability, stability, accuracy, and cost-effectiveness. The product's application potential is vast.
Key Features
- High Accuracy: ±2.0% Full Scale (F.S.) accuracy
- Linear Output: No need for temperature compensation
- Long-term Stability: Minimal zero-drift
- Quick Response: 20 ms response time
- Wide Flow Rate Range: 0-60 m/s
- High Impact Resistance: Withstands 100g impact
- Robust Sensing Core: Solid-state, no surface cavity or fragile film, resistant to blockage and pressure impact
- Output Modes: Analog voltage output (1 to 5V) and frequency output (2.05 to 11.69 kHz)
- High Reliability: Suitable for relatively wet gas measurements
- Operating Temperature: -40°C to 125°C
- Storage Temperature: -40°C to 125°C
- Humidity Range: 0 to 100% RH
- Condensate Water Resistant
Performance Specifications
| Functional Items | CAFS1000C Wide Flow Rate Range: 0-60 m/s High Impact Resistance: Withstands 100g impact |
| Flow Range | 10-800 Kg/h (customizable) |
| Service Voltage | 14 VDC |
| Accuracy | ±2.0% FS |
| Repeatability | <0.5% |
| Response Time | 20 ms (selectable) |
| Maximum Pressure | 0.3 MPa |
Output Methods
- Frequency Output: 2.05 to 11.69 KHz
- Analog Voltage Output: 1-5 V
Environmental Specifications
- Operating Temperature: -40°C to 125°C
- Storage Temperature: -40°C to 125°C
- Humidity: 0-100% RH
- Protection Level: IP40
- Calibration Method: Air, at 20°C, 101.325 kPa
- Material: ABS
