Product category:
Pressure measurement systems
News Release from: Bronkhorst | Subject: EL-Press
Edited by the Processingtalk Editorial
Team on 28 April 2005
Pressure control for supercritical CO2
fluids
Bronkhorst EL-Press pressure controllers are assisting in the application of supercritical fluids in chemical processing, allowing precise pressure control to modify the fluid properties consistently
Bronkhorst EL-Press pressure controller units are assisting in the application of supercritical fluids in chemical processing, allowing precise pressure control to modify the fluid properties consistently Supercritical carbon dioxide fluids are now commonly being used as solvents, eg in biotechnology and in semiconductor wafer processing, and new processes are constantly being developed to modify the fluid properties by controlling the CO2 pressure
This article was originally published on Processingtalk on 22 Apr 2005 at 8.00am (UK)
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EL-Press digital pressure controller
The modern digital approach to fluid pressure regulation, for laboratory use, Hazardous Area (ATEX) or process control via Profibus, DeviceNet, RS232 or RS485 digital communication is the EL-Press DPC
Recent University based research into the application of supercritical CO2 has used an EL-Press digital electronic pressure controller over the range of 0-400 bar.
Using the EL-Press controller, the researchers can adjust the pressure ramp-up speed, hold the pressure over time, and then adjust the pressure ramp-down speed, all factors which can modify the properties of the supercritical fluid processes.
In this University application, the EL-Press unit is controlled using FLOW-BUS digital communication interface, from a PC, which also records the pressure profile data using Freeware.
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