Concentration Monitoring System | CMS-4 | PresSure Products Co, Inc

Concentration Monitoring System

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Our newest system for maintaining the chemical concentration of partially water soluble chemical cleaning agents in inline cleaners is the CMS-4. This system is based on ultrasonic sound velocity measurements.
Ultrasonic sensing as implemented in our CMS-4 offers several important advantages.

  1. The mixed phase, emulsion state of the inline cleaner's wash tank does not confuse the ultrasonic signals. In terms of wave mechanics, this is due to the size of emulsion droplets being much smaller than the wavelength of ultrasonic signals. This is fundamental physics that gracefully addresses the emulsion nature of the liquid.
  2. For many of the contaminants that are present in the cleaning environment, sound velocity measurement shows much smaller errors than other commonly available forms of inline measurements.
  3. While sound velocity measurements are affected by different liquid conditions, the CMS-4 features a sample conditioning chamber that ensures correct sound velocity measurements for all inline cleaner conditions.
  4. CMS-4's computer system stores multiple calibrations and is able to handle different cleaning agents and process conditions.
This system is designed to improve the concentration monitoring accuracy in heavily contaminated environments. Previous generations of control systems have not been explicitly designed to operate in such environments, a core deficiency that has led to the unavoidable use of simplifying assumptions that can prove grossly off target.

The failure of these assumptions invariably results in the misconception that the system is under control, even when the actual concentration has deviated from acceptable range. PPC’s CMS-4, meanwhile, was designed from the start to tackle such environments.

The CMS-4 provides continuous monitoring and accurately controls the concentration of aqueous-based cleaning agents in your inline cleaner.

Concentration imbalances can occur through assembly-related dragover, evaporation, or bath level adjustments. The CMS-4 not only gives precise control of the process to resolve this problem, it also greatly reduces chemistry usage. The system’s unique design ensures that concentration is controlled at a point just before the spray nozzles—where it counts.

New features include:

  • A new technology sensor that is far less sensitive to flux residue contamination than sensors used elsewhere in the industry.
  • Inclusion of supplementary sensors that continuously monitor ionic contamination.
  • Programmable signal offsetting to mitigate the effects of contamination.
  • Full computer control, with complete logging for every bit of data collected by the CMS-4.
  • Precise liquid level control for enhanced concentration stability.
  • Multiple-product capability standard.
  • Full computer networking connectivity.
  • Upgradability for future sensor additions.
How the CMS-4 Works. 
The CMS-4 is easily and unobtrusively fitted to most inline cleaners. It includes a state-of-the-art sensor and automatically adjusts the amount of chemistry in the wash tank to maintain the proper concentration. The sensor is fitted to a sampling loop, through which a continuous sample of the wash solution flows. This approach permits precise control of the chemistry, making the system robust and nearly maintenance-free. 

A full-feature computer monitors the wash solution concentration, injection of chemistry, duration of injection, and all status alarms. Both pre-set and actual concentration values are displayed for the operator in numeric and graphical displays.

Ease of Use. The CMS-4 also features a user-friendly operator interface touch-screen graphic panel that allows for simple process setting changes and displays the status of the process. 

The chemical delivery system consists of a metering pump and a containment pallet. Three sensors are mounted on the containment pallet to detect overflow, low chemistry levels, and chemistry out. A light tower indicates the condition of the system and on-screen indicators are provided to assist with troubleshooting, while the system tracks the amount of chemistry and water added.

System controls are housed in a NEMA 12 console on casters. To ensure safety, a low-voltage (24V) control is used, as well as stainless steel or polypropylene components. 

The Utmost Control and User Support

Armed with the CMS-4’s unique capabilities, users can quickly discover an operation’s contaminant accumulation behavior. PresSure Products staff can further support operators by using the logged CMS-4 data to program automatic offsetting formulae that are customized for each operation. 


The bottom line: PPC’s CMS-4 provides more superior control, contamination mitigation, and operation traceability than any previous generation system. 

Concentration Monitoring System CMS-4Click image to enlarge

Power Requirements:
Voltage—115 VAC at 60hz
Current—15 amperes

Additional Requirements:
A source of deionized water can be employed to control concentration updrift.

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