ACU20PH Series

The ACU20PH series comes standard with a piezoelectric diaphragm‑type pressure sensor and a digital circuit board, delivering high‑accuracy, stable, and reliable pressure measurement and control. This basic digital PC board incorporates all the essential functions required for measurement and control. In addition to the standard RS485 output signal, the ACU20PH also offers analog I/O signals.

Category:

Pressure Controller

Product attachment:

ACU20PH高温压力控制器电子手册.pdf

ACU20PH电子手册(ip65).pdf

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Email: sales@accu-flow.com.cn

Product Description

Product Description

I. Product Overview

The ACU20PH series high‑temperature pressure controllers/pressure gauges feature a split‑type design, with measurement ranges from 100 kPa to 10 MPa (available in both absolute and gauge pressure). In addition, differential pressure transmitters are also offered. This series delivers high accuracy and excellent repeatability, and is available in two configurations: upstream pressure control and downstream pressure control.
The ACU20PH series comes standard with a piezoelectric diaphragm‑type pressure sensor and a digital circuit board, delivering high‑accuracy, stable, and reliable pressure measurement and control. This basic digital PC board incorporates all the essential functions required for measurement and control. In addition to the standard RS485 output signal, the ACU20PH also offers analog I/O signals.

II. Product Applications

The ACU20PH high‑temperature pressure controller/pressure gauge employs a proportional solenoid valve. It delivers exceptionally fast and smooth control, and we offer a range of control valves tailored to specific application areas. Standard direct‑acting valves are used for general applications, while pilot‑operated valves are recommended for high‑flow‑rate applications.

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

III. Product Specifications

Series	ACU20PH
Model number	LC	LM	MC	MM	BC	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	50:1	20:1	50:1	20:1	50:1
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	0~+250℃
Temperature sensitivity	0.1%FS/°C
Directional Influence (90° Change)	<0.03 kPa (absolute pressure / gauge pressure sensor)
	<0.6 kPa (differential pressure sensor)
Electrical connection	DB9 port
Protection rating	IP40, IP65 (customizable)
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, ferrule fittings, quick-connect couplings, VCR fittings, flanges, and more