ACU10FC

The ACU10FC differential-pressure mass flow controller employs a differential-pressure-based mass measurement principle that features no thermal drift and zero response lag. It can simultaneously display and output parameters such as instantaneous flow rate, totalized flow, pressure, and temperature. When control functionality is required, an electromagnetic proportional control valve can be added, along with built-in PID regulation capabilities. Unlike thermal mass flow meters, the ACU10FC eliminates any additional "specific heat capacity" error when using gas conversion factors. As a result, even if the gas being measured differs from the calibration gas used at the factory, the measurement accuracy remains unaffected.

Category:

Gas Flow Meters and Flow Controllers

Product attachment:

ACU10FC Differential Pressure Gas Mass Flow Controller.pdf

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I. Product Overview

◆ No thermal drift, with negligible temperature and time drift; long-term stability of 0.1% F.S. per year

◆ Accuracy of 1.0%, with a range that can be set via buttons within a 100:1 ratio—no calibration required

◆ Instantaneous and cumulative flow, pressure, and temperature can be displayed simultaneously

◆ No warm-up required—no response lag during measurement

◆ Built-in 30 gas conversion factors with negligible additional error in specific heat capacity—no impact on accuracy

The ACU10FC differential pressure mass flow controller employs a differential pressure-based mass measurement principle that ensures zero thermal drift and no response lag, allowing it to simultaneously display and output parameters such as instantaneous flow rate, totalized flow, pressure, and temperature. When control functionality is required, it can also be equipped with an electromagnetic proportional control valve and features built-in PID regulation capabilities. Unlike thermal mass flow meters, the ACU10FC differential pressure mass flow controller eliminates any additional "specific heat capacity" errors when using gas conversion factors. As a result, even if the gas being measured differs from the calibration gas used at the factory, measurement accuracy remains unaffected.

II. Product Applications

The ACU10FC series differential pressure mass flow controllers are widely used across various industries, including process manufacturing, food analysis, analytical testing, and metrology. Featuring multi-variable measurements and a highly adjustable 50:1 range ratio, a single ACU10FC differential pressure mass flow controller can effectively replace the functionality of multiple devices. With an accuracy of 1%, repeatability of 1%, and a control response time of less than 200 milliseconds, these controllers ensure reliable operation of process gases.

3. Product Specifications

Series	ACU10FC
Model	LC	LM	MC	MM	BC	BM
Measurement range	0–(2, 5, 10...1000) SCCM, 0–(1, 5, 10...30) SLM		0 - (30, 40, 50...300) SLM		0 - (300, 400, 500...3000) SLM
Accuracy	±1.0% of F.S.
Repetitiveness	±1% of F.S.
Zero-point drift & Full-scale drift	0.02% F.S./°C/Atm
Work differential pressure	0.1–0.5 MPa (specified upon order)
Measurement range ratio	50:1	100:1	50:1	100:1	50:1	100:1
Typical Response Time	200 milliseconds (adjustable)
Analog quantity	0–5V, 4–20mA
Digital quantity	RS232/485, MODBUS Protocol
Power supply	24VDC
Operating temperature	+10 to +50°C
Work pressure drop	<0.01 MPa
Work stress	<1 MPa
Electrical connection	DB15 port
Protection Level	IP40
Leak rate	1 × 10⁻⁹ Pa·m³/s
Valve	Valve remains closed	/	Valve remains closed	/	Valve remains closed	/
Base material	Stainless steel
Sealing material	Fluororubber, nitrile rubber, EPDM, perfluoroether
Surface Thread	G3/8 internal thread				G1/2 internal thread
Connector	Crimpers, towers, quick-connect fittings, VCRs, flanges, and more