Smith, 1959 - Google Patents
Extended Range Pirani GaugeSmith, 1959
- Document ID
- 3357964154882023847
- Author
- Smith A
- Publication year
- Publication venue
- Review of Scientific Instruments
External Links
Snippet
A Pirani gauge has been developed which is useful from atmospheric pressure to 10-5 mm Hg. This gauge has two elements: a platinum ribbon active in the low-pressure region and a thermistor bead active in the high-pressure region. By a simple but unique electrical circuit …
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material by electric or magnetic means
- G01L9/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material by electric or magnetic means by making use of variation in ohmic resistance, e.g. of potentiometers,, i.e. electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/10—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured
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