Micro Flow Sensor for Air/Oxygen/Nitrogen, 0~±0.2L/min

The micro gas flow sensor uses the heat transfer principle to measure gas flow. The sensor contains a thermal flow chip and a high-performance CMOS microprocessor with an integrated 24-bit AD set, which has the advantages of high integration and cost performance.

Features

• The micro flow sensor supports I²C digital communication, which is convenient for integration and data exchange with other devices or systems.
• The flow sensor is fully calibrated and calibrated at the factory, with high measurement accuracy and good repeatability.
• It supports bidirectional measurement of forward and reverse flow, which increases the flexibility of application.
• It has a small hysteresis error and provides real-time, accurate flow data.
• The sensor is equipped with a convenient installation interface, which simplifies the installation process and reduces the complexity of installation and debugging.

Specification

Dimension (mm)

Details

Interface Definition

If the SCL and DATA signal lines are parallel to each other and very close to each other, signal crosstalk and communication failure may occur. The solution is to place a VDD signal or GND between the two signal lines to separate the signal lines. In addition, the integrity of signal transmission can be improved by reducing the SCL frequency. In occasions where the communication environment is more complex, a 100NF decoupling capacitor can be added between the positive and negative pins of the power supply as close to the sensor as possible for filtering.

Installation

When the user's application scenario requires a gas valve for gas control, the gas valve assembly should be installed at the gas input end, and then connected to the sensor to ensure that the product has better air tightness and accuracy. The sensor should be in a fixed installation state in the instrument as much as possible to ensure that the product works in the best condition.

Applications

Tips: What is this micro flow sensor?

The micro flow sensor is a gas micro flow sensor with high measurement accuracy, good repeatability, long-term stability and full calibration. It uses the heat transfer principle to measure gas flow. The sensor contains a thermal flow chip and a high-performance CMOS microprocessor with an integrated 24-bit AD set. The sensor has the advantages of high integration and cost performance.

The micro flow sensor uses IPC digital communication, and its operating voltage is 5V. The sensor is small in size and suitable for all kinds of scenarios that need to measure gas flow. The micro flow sensor has passed strict factory calibration and outputs the detected flow, reducing the user's use cost and the difficulty of secondary development.