Leak detection system for liquid processing device
US6038914A · kind A · utility
34Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Feb 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/186
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leak sensor system for use in liquid processing equipment is disclosed. Liquid is detected by a sensing resistor whose impedance decreases dramatically in the presence of liquid. The effect of this impedance drop on the output voltage of he sensor indicates a wet or moist state which may indicate leakage from the liquid processing. A terminal resistor is in the circuit beyond the sensing resistor ro provide a warning indicator when the sensing resistor is damage or disconnected. The leak sensor system is particularly useful in centrifuge equipment, e.g., for the processing of blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.