Vapor Saturator for Bubbler-Type Liquid Level Sensor
Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-07
This device eliminates the drying of the liquid whose level is being sensed by insuring that the gas flowing to the sensor is vapor-saturated. A preferred gas is nitrogen. One use of this device is to measure the liquid level at the coating nip of a magnetic recording media coating station, where a fast-drying, viscous liquid is coated onto a flexible, nonmagnetic substrate. Fig. 1 is a side-section view of this device, and Fig. 2 is a top view which shows the section of Fig. 1. This vapor-saturating chamber is preferably made of aluminum. Nitrogen gas enters the chamber by way of port 10, and exits as a vapor-saturated gas, by way of port 20, on its way to the bubbler liquid level sensing device (not shown).