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ACU20FD (Metal Seal)

High-Precision Mass Flow Controller (Metal Seal)

The ACU20FD digital mass flow meter consists of a mass flow sensor, laminar flow separator, flow controller regulating valve, and amplification control circuit. It features digital signal input and output, offering advantages such as short preheating time, minimal zero drift, and high reliability.

Product Description

  • Product Description
  • I. Product Overview

    ◆ Thermal principle, offering higher accuracy and faster response, with Ethernet port

    ◆ Tubular shunt, resistant to clogging

    ◆ Suitable for various low-pressure and high-pressure pipelines

    ◆ Short warm-up time, minimal zero drift, and high reliability

    ◆ Analog input/output can be controlled and displayed via secondary instruments or flow computers.

    The ACU20FD high-precision mass flow meter/flow controller uses the capillary heat transfer method—measuring the temperature difference before and after heat exchange—to accurately determine the mass flow rate of gases, independent of temperature and pressure variations. The flow signal detected by the sensor is first amplified, then compared with a preset voltage. The resulting difference is used to precisely control and adjust the regulating valve, enabling closed-loop regulation of the flow rate through the channel until it matches the setpoint value.

    II. Product Applications

    Glass Industry Solar energy Atmospheric Monitoring Industrial Production Petroleum and Petrochemicals
    Coal Metallurgy Gas Generation and Gas Distribution Environmental protection Various instrumental analyses

    III. Product Specifications

    Product Model ACU20FD-LC
    Measurement range 2 SCCM to 30 SLM
    Measurement and Control Range Flow measurement range ratio: 100:1; Controller range ratio: 50:1
    Accuracy ±0.5%F.S
    Linear ±0.5%F.S
    Repeatability accuracy ±0.2%F.S
    Response Time Flow meter: <0.1s
    Flow controller: <0.2s
    Digital quantity RS232/485, Modbus Protocol, Profibus Protocol, DeviceNet Protocol
    Analog quantity 0–5V, 4–20mA, 1–5V
    Power Supply ±15VDC, 24VDC
    Operating Temperature 0~50℃
    Work stress Work pressure drop: <0.01 MPa
    Maximum Withstand Voltage 3MPa/10MPa
    Electrical Connection DB9 Port
    Leakage rate 1 × 10⁻¹⁰ Pa·m³/s
    Temperature coefficient ±0.025%F.S/℃
    Base material Stainless steel
    Sealing material Metal Seal
    Connector 1/4VCR

    IV. Product Dimension Diagram

    V. Optional Supporting Measurement and Control Software (Additional charges apply)

      Quality Flow Measurement and Control System V5.0

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