| 摘要 |
<p>The present invention provides an apparatus for use in indicating the boiling point of fluids across a wide temperature range which comprises a meter (1) of the portable hand held type including a probe (3) for insertion vertically into a fluid for testing, with heating means (5) in the probe (3) for heating of said fluid, and monitoring means (6) for monitoring the temperature rise of heated fluid for indicating the boiling point temperature of the fluid. The probe portion (3) has an inner chamber (11B), in which are located said heating means (5) and temperature monitoring means (6), and which is provided with thermal insulation means (10) for restricting heat loss from said inner chamber (11B) during heating up of said fluid in the inner chamber (11B) up to its boiling point. The inner chamber (11B) is provided with port means (30, 41) formed and arranged for allowing entry of fluid into said inner chamber (11B) upon immersion of the probe portion (3) into said fluid for semi-encapsulation of fluid in the inner chamber (11B) and substantially restricting loss of heated fluid therefrom to the exterior during said heating up of said fluid in the inner chamber (11B) up to its boiling point, whilst allowing loss of boiling fluid to the exterior thereby substantially increasing heat loss from said inner chamber (11B) once said fluid has been heated to its boiling point.</p> |
