ACU20FD-LC Size Chart
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ACU20FD Normally Open Valve Series
The ACU20FD digital mass flow meter comprises a mass flow sensor, a laminar‑flow element, a flow‑control regulating valve, and an amplification‑and‑control circuit. It employs digital signal input and output and features short warm‑up time, minimal zero drift, and high reliability.
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Product Description
- Product Description
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I. Product Overview
◆ Thermal‑anemometer principle, offering higher accuracy, faster response, and a network port.
◆ Tubular shunt, less prone to blockage
◆ Suitable for various low-pressure and high-pressure pipelines
◆ Short warm-up time, minimal zero drift, and high reliability
◆ Analog inputs/outputs can use secondary instruments or flow computers to control and display flow rates.
ACU20FD High-precision mass flow meter/flow controller The mass flow rate of a gas is measured using the principle of differential‑temperature calorimetry based on capillary heat transfer, which is unaffected by temperature and pressure. The flow signal acquired by the sensor is amplified and compared with a setpoint voltage; the resulting error signal drives a control valve, thereby implementing closed‑loop regulation to maintain the flow through the channel at the desired setpoint.
II. Product Applications
Glass industry Solar energy Atmospheric Monitoring Industrial manufacturing Petroleum and Petrochemicals Coal Metallurgy Gas production and gas distribution Environmental protection Various instrumental analyses III. Product Specifications
Series ACU20FD Model number LC LM MC MM Measurement range 0–(2, 5, 10…1000) SCCM, 0–(1, 5, 10…30) SLM 0-（30,40,50...300)SLM Accuracy ±0.5%F.S Linear ±0.25%F.S Repeatability ±0.2%F.S Response time <0.2s <0.1s <0.2s <0.1s Working differential pressure 0.1–0.5 MPa (to be specified at the time of order) Range ratio 50:1 100:1 50:1 100:1 Analog quantity 0–5 V, 4–20 mA Digital quantity RS232/485, MODBUS protocol Power supply 24VDC Communication protocol Modbus, DeviceNet, Profinet, EtherCAT, Profibus, and others Operating temperature 0~50℃ Maximum withstand voltage 3 MPa / 10 MPa (to be specified at the time of order) Electrical connection DB9 port Display screen Touchscreen display Leak rate 1×10 ⁻9 Pa m 3/S Protection rating IP40 Valve Valve remains open / Valve remains open / Base material Stainless steel Sealing material Fluororubber, nitrile rubber, EPDM, perfluoroether Body thread G3/8 internal thread
G1/2 internal thread
Joint Ferrules, ferrule fittings, quick-connect couplings, VCR fittings, flanges, and more IV. Product Dimension Diagram
ACU20FD-MC Size Chart
V. Optional Accompanying Measurement and Control Software (Additional charges apply)
Mass Flow Measurement and Control System V5.0
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