Mini Mass Air Flow Sensor, -3~3 L/min, 1~5V Output

SUCH thermal mass flow sensors are specifically designed for precise measurement of minute gas flows, with built-in temperature compensation and a compact form factor. The mass air flow sensor operates within a range of −3 to 3 L/min, featuring a 1-5V signal output. It delivers rapid response, fast recovery time, and strong anti-interference capabilities, making it suitable for various applications requiring gas flow measurement.

Feature

• The mass flow rate of the measured gas is calculated by measuring resistance changes. The sensor utilizes SUCH's independently developed MEMS mass flow chip, featuring intuitive operation, high precision, stability, resistance to high and low temperatures, excellent linearity, and fast response time.
• The flow sensor incorporates built-in temperature compensation and boasts high integration.
  with a compact size for convenient user portability and operation.
• The micro-flow sensor undergoes rigorous factory calibration, directly outputting measured flow rates to reduce user operational costs and minimize secondary development complexity.
• Applications include flow measurement and control for gas detectors and air samplers, purge and cooling flow management in equipment like wire bonding machines, and adsorption/installation verification for micro-electronic and optical components.

Dimension (unit: mm)

Wiring Diagram

Flow Voltage Output Curve

Mini mass airflow sensor analog voltage output, with the voltage-to-flow correspondence as follows:

Calculation formula: X = Voltage (V) Y = Liters per minute (slm)

Voltage to flow conversion:

• Forward: If output voltage is greater than or equal to 3V and less than or equal to 4.5V, use this formula: Y = X/2.5
• Otherwise use this formula: Y = (X - 4.5) * 4.8 + 0.6

Reverse Mode:

• If the output voltage is greater than or equal to 1.5V and less than or equal to 3V, use this formula: Y = X / 2.5
• Otherwise use this formula: Y = (X - 1.5) * 4.8 - 0.6