Mass Air Flow Sensor

Auto sensors
Air flow meters, air flow sensors
We specialize in the automotive sensing technology, produce and sell our auto sensors, especially air flow sensors (air flow meters), phase sensors, map sensors, abs sensors etc. We are willing to offer you these products that are good quality and competitive price. The sensors are of various models and for different vehicles such as vw, audi, fiat, skoda, opel, lada, benz.
F you have any questions or need more information, please feel free to contact us.

20pcs/carton

Thermal gas mass flow meter is designed on the basis of thermal dispersion, and adopts method of
constant differential temperature to measuring gas flow. It has advantages of small size, easy installation,
high reliability and high accuracy, etc.
The meter contains two platinum resistance temperature sensors. The thermal principle operates by
monitoring the cooling effect of a gas stream as it passes over a heated sensor. Gas flowing through the
sensing section passes over two sensors one of which is used conventionally as a temperature sensor,
whilst the other is used as a heater. The temperature sensor monitors the actual process values whilst
the heater is maintained at a constant differential temperature above this by varying the power consumed
by the sensor. The greater the gas velocity, the greater the cooling effect and power required to maintain
the differential temperature. The measured heater power is therefore a measure of the gas mass flow
rate.
The format of gas velocity and power is shown as below:
��(1)
Where: is specific gravity of medium
V is velocity
K is balance coefficient
Q is heater power
Î? T is differential temperature
The medium temperature range of meter is -40ï½?220.
In the format (1), the specific gravity of medium is related to the density:
��(2)
Where: is the medium density in working conditionkg/m3
�n is the medium density in standard condition, 101.325kPa and 20 kg/m3
P is the pressure in working conditionkPa
T is the temperature in working condition
In the formats (1) and (2), there is a certain functional relationship between the velocity and pressure in
working condition, medium density, the temperature in working condition.
Due to the sensor temperature is always 30 higher than the medium temperature (environment
temperature), and the meter adopts method of constant differential temperature, therefore the meter do
not need to do temperature and pressure compensation in principle

We supplying air flow sensor from China, with very competitive price & widest range. Pls contact us for details

Flow rate range: 10, 25, 50,100 l/min.
Minimum unit setting: 0.01 l/min. (0.1 l/min when the flow rate range is 25, 50, 100 l/min.)
Repeatability: ±1%F.S. or less.
Grease-free
Flow adjustment valve is integrated. (Reduced piping and space saving)
Response time: Either 50 milli sec., 0.5 sec., 1 sec. or 2 sec. can be chosen.

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Flow-sensors
Flow meter
Flow meter sensor, flow sensors
Product description
Medium flow solution
Food grade material, it can be worked in the water which temperature is 100, c.
Wide operating voltage range
Stable square wave signal
No need external circuit,
No need customer to install magnetic field
General application:
Teaset, supply equipment etc for civil use, and appliance for commercial use.
Feature:
The through type hall effect flo
w sensor ah-001 is based on hall effect element, and it's very simple to use, the output signal is square wave, and it's accurate and relia ble, the customer can use it by connect it as per the operating note, it can be applied in the digital circuit and mcu simply. The food grade material make it can be applied in different occasions, the operating temperature can reach 100, c.