Automatic calibrating apparatus for laboratory ion concentration meter
First Claim
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1. An automatic calibrating apparatus for supporting a separate portable measuring instrument with a portable sensor member comprising:
- a hollow storage receptacle, independent of the measuring instrument, having a cavity with an entrance opening annular seal dimensioned to removably suspend a sensor member within the receptacle;
determining means for determining the insertion of the sensor member into the storage receptacle including a switch member;
an inlet conduit attached to the storage receptacle;
an outlet conduit attached to the storage receptacle wherein the inlet conduit is attached to the storage receptacle adjacent the bottom of the cavity and the outlet conduit is attached to the storage receptacle adjacent an upper side surface of the cavity;
means for storing separate fluids including a calibration solution and a washing solution;
means for selectively applying the fluids to the inlet conduit for delivery to the hollow storage receptacle;
means for activating a calibration procedure when enabled by the determination of the determining means that a sensor member is mounted in the storage receptacle, including means for coordinating which includes a controller operatively connectable to the separate portable measuring instrument, for coordinating first, the introduction of the washing solution into the receptacle and the subsequent removal of the washing solution, and second, the introduction of the calibration solution and removal of the calibration solution;
means for storing a measurement signal from the sensor member during the presence of the calibration solution;
means for automatically comparing the measurement signal with a stored reference value and providing a corresponding adjustment of the sensor member output signal; and
means for removably connecting the controller with the measuring instrument to permit the corresponding adjustment of the sensor member output signal.
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Abstract
An automatic calibrating apparatus for a measurement instrument having a sensor member includes a chamber adapted to hold the sensor member during a storage mode. A controller can respond to the presence of the sensor member and automatically wash the sensor member, and subsequently immerse it in a calibration solution. The output reading of the sensor member, along with the temperature, can then be utilized to calibrate the instrument. The sensor member can be subsequently cleansed with a washing fluid so that it is ready for immediate use.
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Citations
10 Claims
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1. An automatic calibrating apparatus for supporting a separate portable measuring instrument with a portable sensor member comprising:
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a hollow storage receptacle, independent of the measuring instrument, having a cavity with an entrance opening annular seal dimensioned to removably suspend a sensor member within the receptacle; determining means for determining the insertion of the sensor member into the storage receptacle including a switch member; an inlet conduit attached to the storage receptacle; an outlet conduit attached to the storage receptacle wherein the inlet conduit is attached to the storage receptacle adjacent the bottom of the cavity and the outlet conduit is attached to the storage receptacle adjacent an upper side surface of the cavity; means for storing separate fluids including a calibration solution and a washing solution; means for selectively applying the fluids to the inlet conduit for delivery to the hollow storage receptacle; means for activating a calibration procedure when enabled by the determination of the determining means that a sensor member is mounted in the storage receptacle, including means for coordinating which includes a controller operatively connectable to the separate portable measuring instrument, for coordinating first, the introduction of the washing solution into the receptacle and the subsequent removal of the washing solution, and second, the introduction of the calibration solution and removal of the calibration solution; means for storing a measurement signal from the sensor member during the presence of the calibration solution; means for automatically comparing the measurement signal with a stored reference value and providing a corresponding adjustment of the sensor member output signal; and means for removably connecting the controller with the measuring instrument to permit the corresponding adjustment of the sensor member output signal. - View Dependent Claims (2, 3, 4, 5)
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6. An automatic calibrating apparatus for calibrating a separate portable measuring instrument with a portable sensor member comprising:
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a hollow storage receptacle, independent of the measuring instrument, having a cavity dimensioned to suspend a sensor member within the receptacle, including an upper aperture extending across the hollow storage receptacle and an annular seal configured to sealingly and removably receive a sensor member so that an electrode portion is positioned in close proximity to a bottom of the cavity receptacle; an inlet conduit attached to the storage receptacle; an outlet conduit attached to the storage receptacle of the cavity wherein the inlet conduit is attached to the storage receptacle adjacent the bottom of the cavity and the outlet conduit is attached to the storage receptacle adjacent an upper side surface of the cavity; means for storing separate fluids including a calibration solution and a washing solution; means for selectively applying the fluids to the inlet conduit for delivery to the hollow storage receptacle; means for activating a calibration procedure, including means for coordinating which includes a controller operatively connectable to the separate portable measuring instrument, for coordinating first, the introduction of the washing solution into the receptacle and the subsequent removal of the washing solution, and second, the introduction of the calibration solution and removal of the calibration solution; means for storing a measurement signal from the sensor member during the presence of the calibration solution; means for automatically comparing the measurement signal with a stored reference value and providing a corresponding adjustment of the sensor member output signal; and means for removably connecting the controller with the measuring instrument to permit the corresponding adjustment of the sensor member output signal. - View Dependent Claims (7, 8, 9, 10)
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Specification