Version: V1.0 Applicable to: Official Website FAQ / Selection Support / Pre-sales and After-sales Support Note: Specific parameters, ranges, accuracy, interfaces, and certifications are subject to the product datasheet and contract. I. Basic Concepts Q1: What is an MFC? A: MFC stands for Mass Flow Controller, and it not only precisely measures the mass flow … Read more
Q24: What preparations should you make before installation? A: Before installation, you should confirm that the gas source is clean, purge the pipelines, match the connections, verify the power supply, and check the communication wiring. In addition, inspect the pressure reducing valve, filter, check valve, and shut-off valve. Q25: How do you install the MFC? … Read more
Q35: What gas do you use for calibration? A: We commonly use N₂ for calibration, but we can also calibrate with the customer’s actual gas. In addition, for multi-gas applications, we can perform multi-point calibration or mixed-gas calibration. Q36: Can you calibrate on site? A: Some models support on-site zeroing and simple calibration; however, precision … Read more
Q65: What is the minimum order quantity? A: It depends on the model and customization requirements. For standard products, you can order a single unit; however, for customized or OEM projects, we need to negotiate the details. Q66: What is the delivery time? A: For standard products, delivery takes 3–4 weeks; moreover, for customized products, … Read more
Q58: What are the common applications of MFCs? A: MFCs serve a wide range of industries, including semiconductors, photovoltaics, LEDs, vacuum coating, fuel cells, hydrogen energy, analytical instruments, gas chromatography, biopharmaceuticals, environmental monitoring, combustion control, and gas mixing. Q59: What requirements does the semiconductor industry place on MFCs? A: The semiconductor industry demands high purity, … Read more
Q49: What should you do if the MFC has no flow or insufficient flow? A: First, check the gas source, pressure-reducing valve, and filter. Then, inspect the valve orifice for blockage, and verify the working pressure differential, setpoint, and communication. Also, check whether the downstream valve is closed. Q50: What should you do if the … Read more
Q42: What communication methods does the MFC support? A: Common analog signals include 0–5V, 0–10V, and 4–20mA; moreover, digital options include RS232/RS485, Modbus RTU, Profibus, DeviceNet, EtherCAT, Profinet, EtherNet/IP, CANopen, etc. In fact, we support either 0–5V or 4–20mA (choose one), and RS485 comes as standard. Q43: How do you connect the MFC to a … Read more
Q11: How to choose the right MFC range? A: For best performance, keep the typical operating point within 30%–80% of full scale, and avoid operating below 10% F.S. for extended periods. An oversized range reduces accuracy at low flow rates, while an undersized range limits adjustment margin. Q12: Differences between FDC-320 / EDC-320 / EDC-325 … Read more