Product Features
● Employing a microelectromechanical system (MEMS) flow sensing chip, the sensor features high precision, high sensitivity, and strong anti-interference capabilities.
● Zero-point stability of the sensor.
● It has high accuracy and good repeatability within its measurement range .
● Standard mechanical interface, easy to install .
● RS485 communication output, standard MODBUS RTU protocol .
● The LCD displays instantaneous and cumulative flow rates, which are clear, intuitive, and easy to read.
● You can choose between a 4~20mA standard current signal output or a 1~5V/0-10V/0-5V voltage output.
● Intrinsically safe explosion-proof certification.
Product Introduction
The AI-FM high-precision thermal gas mass flow meter is a high-precision thermal gas flow sensor designed and developed using an advanced microelectromechanical system (MEMS) flow sensing chip. This high-precision flow meter features higher accuracy, higher sensitivity, and strong anti-interference capabilities, making it suitable for measuring and controlling various small-flow-rate clean gases. This flow meter is intrinsically safe and explosion-proof, suitable for environments requiring high accuracy and intrinsic safety. It is cost-effective, easy to install, and requires no temperature or pressure compensation, making it a viable replacement for traditional volumetric or differential pressure flow meters .
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working power supply
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DC24V/2.5W
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Accuracy (%)
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±(1.0 FS ) %
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medium temperature
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-10~55 ℃
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humidity
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<95%RH (no frost, no ice , no condensation )
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Work pressure
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≤ 1.5 MPa
(3MPA can be customized)
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Response time (ms)
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50ms
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Output method
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4-20mA or 1~5V, 0-5V/0-10V selectable .
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Mechanical connection
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PT1/2 or G1/4 internal threads are available; other thread interfaces can be customized.
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show
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Instantaneous traffic, cumulative traffic
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Communication methods
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RS485 (Modbus RS tu protocol )
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Range ratio
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1:100
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preheating time
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3-4 minutes (preheating is recommended for best results)
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Selectable standard temperature conditions
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0°, 20°, 25° are user-adjustable, with 25° as the default.
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Selectable gas
type
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Air, N2, O2, CH4, Ar, CO2, He, H2 , C3H8 (other gases can be obtained by contacting the manufacturer)
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Protection level
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IP40
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Other signal outputs
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PNP output can be selected
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Pipe diameter
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DN8 and DN15 are available.
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Storage temperature
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-10~65℃
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were measured at 25 ℃, 101.32 kPa, and in dry air .
Minimum measurable flow rate: 0.3 N mL / min
Maximum measurable flow rate: 1000 NL/ min
Note: Do not exceed the measurement range, as this may damage the sensor.
