The ACU20FD digital mass flow meter consists of a mass flow sensor, a laminar flow element, a flow control valve, and an amplification and control circuit. It uses digital signal input and output and features a short preheating time, small zero drift, and high reliability.
Range: 0-100 SLM

Overview
Applications
Specifications
Dimensions
Software
◆Thermal principle, higher accuracy, faster response, with network port
◆Tubular flow path, not easy to block
◆Suitable for various low-pressure and high-pressure pipelines
◆Short preheating time, small zero drift, high reliability
◆Analog input/output can be used to control and display flow rate with a secondary instrument or flow computer
ACU20FD High-Precision Mass Flow Meter/Flow Controller It adopts the principle of capillary heat transfer method to measure the mass flow rate of gas, which is not affected by temperature and pressure. The flow signal measured by the sensor is amplified and then compared with the set voltage. The obtained difference is used to drive the control regulating valve, and the closed-loop control of the flow rate through the channel makes it equal to the set flow rate.
| Glass industry | Solar energy | Atmospheric monitoring | Industrial manufacturing | Petroleum and petrochemical |
| Coal and metallurgy | Gas production and distribution | Environmental protection | Various instrument analysis | |
| Series | ACU20FD | |||
| Model | 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 | |||
| Linearity | ±0.5%F.S | |||
| Repeatability | ±0.2%F.S | |||
| Response Time | <0.2s | <0.1s | <0.2s | <0.1s |
| Operating Differential Pressure | 0.1~0.5MPa (specified when ordering) | |||
| Measurement Range Ratio | 50:1 | 100:1 | 50:1 | 100:1 |
| Analog Signal | 0~5V、4~20mA | |||
| Digital Signal | RS232/485,MODBUS protocol | |||
| Power Supply | 24VDC | |||
| Communication Protocol | Modbus、DeviceNet、profinet、EtherCAT、profibus, etc. | |||
| Operating Temperature | 0~50℃ | |||
| Maximum Withstand Pressure | 40MPa/70MPa (specified when ordering) | |||
| Electrical Connection | DB9 port | |||
| Display | Touch screen | |||
| Leakage Rate | 1×10⁻⁹Pa m³/S | |||
| Protection Level | IP40 | |||
| Valve | Valve normally closed | / | Valve normally closed | / |
| Base Material | Stainless steel | |||
| Sealing Material | Viton, nitrile rubber, EPDM, perfluoroether | |||
| Body Thread | G3/8 inner thread | |||
| Connector | Compression fitting, pagoda, quick-connect, VCR, flange, etc. | |||
Mass flow measurement and control system V5.0