Procan-QCS, Quality Control System for Process Liquids

The Steuma Analysis- and control system for concentrations of process liquids is especially  developed for those applications where it is of main importance that the concentration of a process liquid remains constant, to ensure the quality of a production process.

The system measures continuously the concentration of the liquid in e.g. a tank. The difference between measured value and default value defines whether automatically concentrate or dilution liquid (e.g. water) is added to the process. This continuous until the nominal value is reached.

 The heart of the system consists out of the Steuma process refractometer ProcanND.

This analyser has an unique feature: a continuous ultra sonic cleaning system prevents any product coating on the measuring prism. So, no drift of the measuring value. For an analysis -and control system a prerequisite!

The measured values are processed by the ProcanMaster; this is an IPC/PLC based process control system and it consists out of system software and the required hardware. The whole system is housed in a stand-alone enclosure with control panel.

Operating Principle

A By-pass flow is created out of the process (e.g. a process tank). A dry-running protection (DLB) system protects the by-pass pump. The liquid flows through the analyser passing the measuring prism. The prism is kept clean by the ultra sonic cleaning system. A flow fail indicator warns whenever there is no flow through the by-pass. Mixing devices are integrated In the by-pass stream.

These devices take care that the added concentrate or dilution liquid are well mixed with the process liquid. In the mixing device the concentrate will be injected with a constant pressure and flow. This will guarantee a repeatable dosing process.  The control valves are controlled by the ProcanMaster. A PID-Controller is included in the ProcanMaster Software to enable adjustment of the control parameters for all different process conditions.

The display shows all relevant information in trend and numbers. The whole process can be monitored and controlled. All data are automatically stored to enable tracing of calamities.

More systems can be networked for central visualisation and control. 

Applications:

• Siliconenbath plastic foil-extrusion
• PVA, CMC, CMS textile sizing.
• Hydraulic liquids, cutting oil production process
• DMAC / DMF Fibers
• Etc.......

download: Procan-QCS