ACU20FDR

The ACU20FD digital mass flow controller 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.

Category:

Gas Flow Meters and Flow Controllers

Product attachment:

ACU20FD（Profibus DP）.pdf

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I. Product Overview

◆Thermal principle, fast response, high accuracy

◆Tubular shunt, 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 with secondary instruments or flow computers

The ACU20FD is a high-precision flow meter/controller series with a measurement error of only ±0.5% of the full scale. The series' excellent accuracy stems from its unique sensor probe. This sealed probe consists of two sensing elements—a velocity sensor and a temperature sensor—that automatically correct for the effects of temperature and pressure changes. The instrument circuit heats the velocity sensor to a constant value higher than the gas/liquid temperature, then measures the cooling effect of the gas flow. The flow rate is calculated based on the principle that the electrical power consumed to maintain a constant temperature difference is proportional to the gas mass flow rate. Both sensors are standard platinum resistance temperature detectors (RTDs), sealed in a stainless steel housing.

II. Product Applications

Glass industry	Solar energy	Atmospheric monitoring	Industrial manufacturing	Oil and petrochemicals
Coal and metallurgy	Gas production and distribution	Environmental protection	Various instrument analysis

III. Product Parameters

Series	ACU20FDR
Model	LC	LM	MC	MM	BC	BM	HC	HM
Measurement Range	0（150，200，300...600）SLM		0-（600,700...1200)SLM		0-（1200,1500...4000)SLM		0-（4000,4200...6000)SLM
Accuracy	±0.5%F.S
Linearity	±0.5%F.S
Repeatability	±0.2%F.S
Operating Differential Pressure	0.3~0.5MPa (specified when ordering)
Response Time	<0.2s	<0.1s	<0.2s	<0.1s	<0.2s	<0.1s	<0.2s	<0.1s
Turn Down Ratio	50:1	100:1	50:1	100:1	50:1	100:1	50:1	100:1
Response Time	<0.8s
Warm-up Time	< 5 seconds
Analog	0～5V、4～20mA
Digital	RS232/485，MODBUS protocol
Power Supply	24VDC
Communication Protocol	Modbus、DeviceNet、profinet、EtherCAT、profibus, etc.
Operating Temperature	0~50℃
Maximum Pressure Resistance	3MPa/10MPa (specified when ordering)
Electrical Connection	DB9 port
Monochrome LCD display	Simultaneously displays flow and settings
Maximum Pressure Resistance	3MPa/10MPa
Leakage Rate	1×10-9Pa m³/S
Protection Level	IP40
Base Material	Stainless steel
Sealing Material	Viton, nitrile rubber, EPDM, perfluoroether
Body Thread	G3/4 internal thread				1 inch
Connector	Compression fitting, pagoda, quick-connect, VCR, flange, etc.