ACU20P Series

The ACU20P series pressure controllers are equipped with high-performance sensors and digital circuit boards, delivering superior precision and performance in pressure control. By simply adjusting the setpoint, they enable precise control of the entire process. In addition to the standard Modbus protocol, they also support the Profibus protocol.

Category:

Pressure Controller

Product attachment:

ACU20P Series Digital Pressure Controller/Meter.pdf

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I. Product Overview

The ACU20P series pressure controllers and pressure gauges feature a straight-through design, with a measurement range from 100 kPa to 10 MPa (available for both absolute and gauge pressure). Differential pressure transmitters are also offered. This series of instruments boasts high accuracy and excellent repeatability, and is available in two configurations: forward-pressure control and back-pressure control.

The ACU20P series comes standard with a pressure sensor and a digital circuit board, delivering high-precision, fast-responding, and reliable pressure control. The PC-based digital board incorporates all the functions required for precise pressure regulation. In addition to the standard RS485 output signal, the ACU20P also features analog input and output interfaces, enabling accurate control of the entire process simply by adjusting the setpoint. The ACU20P series pressure controllers can be equipped with either an integrated or a split-type control valve. This is a proportional solenoid-controlled valve that offers ultra-fast response and smooth, stable control.

II. Product Applications

Application areas: semiconductor manufacturing processes, gas-phase and liquid-phase chromatography, vapor-pressure control in MOCVD processes, gas-pressure protection control in extrusion molding, and pressure control in autoclaves/reactors, among others.

III. Product Specifications

Series	ACU20P
Model	LC	LM	MC	Miss	British Columbia	BM
Preheating time	Negligible
Accuracy	±0.5% F.S
Repeatability	≤0.1%
Working differential pressure	0.05–0.5 MPa (customizable upon request)
Sensor response time	0.2s
Range ratio	20:1	50 to 1	20:1	50 to 1	20:1	50 to 1
Control stability	≤±0.05% F.S (measurement conditions: 1 L/min N2)
Analog quantity	0–5 V, 4–20 mA
Digital quantity	RS232/485, MODBUS protocol
Power supply	24VDC
Operating temperature	-10~+70℃
Temperature sensitivity	0.1%FS/°C
Directional Influence Degree (90° Change)	<0.03 kPa (absolute pressure / gauge pressure sensor)
	<0.6 kPa (differential pressure sensor)
Electrical Connection	DB9 pin
Protection rating	IP40
Leak rate	1×10⁻⁹ Pa·m³/s
Valve	Valve normally closed	/	Valve normally closed	/	Valve normally closed	/
Base material	Stainless steel
Sealing material	Fluororubber, nitrile rubber, EPDM, perfluoroether
Body thread	G3/8 internal thread				G1/2 internal thread
Joint	Ferrules, ferrules with a tower-shaped design, quick-connect fittings, VCR fittings, flanges, and more