Patent ID: 7290924

Claim:
A non-boil boiling point indicator device, comprising: a) a probe; b) a control and electronic display connected with the probe; c) the probe including a housing having inner and outer chambers therein for receiving fluid to be tested; d) a plurality of non-restrictive apertures located between each of the inner and outer chambers and between the chambers and an external environment surrounding the housing and the non-restrictive apertures between the inner and outer chambers being located at the top of the inner chamber; e) a heater for heating fluid in the inner chamber; and f) a temperature sensing device configured and located in the inner chamber for sensing the temperature of a fluid being heated in the inner chamber; wherein the control and electronic display includes electronic circuitry that outputs a pulsed output to the heater for heating the fluid in a pulsed manner; g) wherein, in use, a change in rate of temperature rise is detected by the control and electronic display to equate to a preselected temperature reading, and wherein steam or vapor bubbles created adjacent the heater propel non-boiling test fluid above the heater relative to the direction of insertion of the probe in a fluid to be tested to overflow through the non-restrictive apertures between the inner and outer chambers.