Medical liquid-level applications with enhanced capacitive sensor technology - White Paper
This document identifies key issues experienced by manufacturers of medical/biotechnology equipment
regarding handling and detection of liquids with capacitive proximity sensors in particular. It examines concrete
sensing/monitoring methods that will improve processes while guaranteeing reliable and dependable noninvasive
liquid level detection.
The trend towards more sophisticated lab automation instruments, which are expected to handle increasingly complex tasks, requires the most proven, repeatable and reliable sensing technologies available. The potential for end-product contamination as well as safety regulations such as exposure of personnel to potential biohazards or toxic agents must be carefully considered. All of these factors make it especially difficult for machine/instrument builders to acquire essential real-time information about the machine or instrument's state in a non-invasive manner. In most applications, it's virtually impossible to place sensing devices directly in the fluid pathway.
Challenging areas of liquid level detection and monitoring in medical, biotechnology, or pharmaceutical applications today are as follows:
- MIN-Level indication in ampules and vials
Non-invasive detection regardless of color or changing liquid composition - Overflow protection of liquid waste reservoirs and container
Disposable and interchangeable containers require non-invasive sensing methodology - Level monitoring of chemical or cleaning agent supply container
Assuring that an operator receives timely warning before the supply ends - Liquid monitoring of blood and other bodily fluids in vacuum collection instruments
Prevents overflow and protects vacuum pumps from contamination - Leakage monitoring and alarm response
Detection of liquid contamination in the instrument - Sensor operation monitoring
Make your sensors fail-safe by knowing their actual state of operation and monitor proper functionality in real time
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