Product Description
CAFS1000B series MEMS air flow sensors (air flowmeters) are used in
modern automotive electronic control Fuel injection (EFI) and are
typically installed on the intake port between the air filter and
the throttle body, it is used to measure the amount of air in the
intake engine, and its output signal is used as the main parameter
to control the amount of fuel injection in the electronic fuel
injection system of the automobile engine, the indexes of power,
economy and emission performance of the engine are determined. In
order to obtain the mixture of fuel concentration in all operating
conditions of EFI engine, it is necessary to measure the amount of
air inhaled into the engine at every instant, which is the main
basis for calculating and controlling the fuel injection amount by
electronic control unit. Therefore, automotive air flow sensor in
modern vehicles to save energy consumption and control emissions of
pollutants play a very important role. CAFS1000B series products
have been used in automobile and related industries for many years,
and can meet the requirements of high reliability, high stability,
high precision and low cost. The product application promotion will
be very broad. Characteristics 1. High precision (± 2.0% F. S
precision)2, linear output and no temperature compensation 3,
long-term stability with small zero drift 4, fast response time (20
ms response time)5, wide flow rate range 0-60 m/s, strong shock
resistance 100g6, solid state sensing core (no surface cavity or
fragile film) , anti-clogging and pressure shock 7, output mode:
analog voltage output (1-5v) , frequency output (2.05-11.69 khz) ,
two options 8, reliability, can adapt to the relative humidity gas
measurement 9, working temperature: -40 ° C to 125 ° C, storage
temperature: -40 ° C to 125 ° C, Humidity: 0 ~ 100% RH10, the
sensor can withstand condensate.
Structural Design
The flow microsensor is located within a specific flow channel and
forms a flow module that can be inserted into the air filter and
placed
Intake pipe section. Depending on the air flow rate, the same type
of air filter can be used, and the flow sensor uses a hybrid
circuit to accurately measure Changes in airflow.
Core-pulling module
1. Measuring channel capping
2. Upper cover
3. Sensor processing circuit
4. Circuit substrate
5. Core pulling
Air Flow Meter Overall:
1. Core-pulling module
2. DC direction
3. Air filter
