Hand-held fluid tester for process fluids
First Claim
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1. A portable, hand-held fluid tester comprising:
- a tester body configured to be held in a hand including an upper surface and an opposed bottom surface, a first recess extending inwardly from the upper surface to a first end wall defining a fluid reservoir, a second recess extending inwardly from the upper surface to a second end wall defining an overflow reservoir disposed adjacent to the fluid reservoir, a spillway surface extending between and interconnecting the fluid reservoir to the overflow reservoir, a third recess extending inwardly from the bottom surface to a third end wall defining a test circuit receiving recess;
at least one test probe member extending from the third end wall into the first end wall and fluid reservoir and sealingly engaged in the tester body, a test circuit in the test circuit receiving recess operably connected with said at least one probe member for measuring at least one parameter of a test fluid introduced in the fluid reservoir and reporting a result for the at least one parameter measurement; and
a cover member releasably secured to the tester body closing off an opening of the third recess.
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Abstract
A portable, hand-held fluid tester for testing and analyzing process fluids is provided with a volume controlled fluid reservoir. The test fluid reservoir is connected by a spillway to an overflow reservoir to provide more consistent and accurate fluid volumes for measurement. Improved mounting of electrodes in the test reservoir and connection to a testing printed circuit substrate provides for ease of assembly. A special temperature probe arrangement is also provided in a preferred embodiment.
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Citations
16 Claims
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1. A portable, hand-held fluid tester comprising:
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a tester body configured to be held in a hand including an upper surface and an opposed bottom surface, a first recess extending inwardly from the upper surface to a first end wall defining a fluid reservoir, a second recess extending inwardly from the upper surface to a second end wall defining an overflow reservoir disposed adjacent to the fluid reservoir, a spillway surface extending between and interconnecting the fluid reservoir to the overflow reservoir, a third recess extending inwardly from the bottom surface to a third end wall defining a test circuit receiving recess;
at least one test probe member extending from the third end wall into the first end wall and fluid reservoir and sealingly engaged in the tester body, a test circuit in the test circuit receiving recess operably connected with said at least one probe member for measuring at least one parameter of a test fluid introduced in the fluid reservoir and reporting a result for the at least one parameter measurement; and
a cover member releasably secured to the tester body closing off an opening of the third recess. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A hand-held fluid tester comprising:
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a tester body having a top, outer surface;
a fluid test reservoir defined in the tester body, the fluid test reservoir having an upper fill opening at the top, outer surface of the tester body and extending downward into the tester body;
an overflow reservoir defined in the tester body;
an overflow spillway fluidly connected to the fluid test reservoir and the overflow reservoir;
at least one test probe extending into the fluid test reservoir; and
an electrical test circuit connected to the at least one test probe.
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16. A method of testing fluid in a hand-held fluid tester comprising the steps of:
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introducing fluid into a fluid test reservoir defined in the fluid tester through an opening in an outer top surface of the fluid tester in which the test reservoir extends downward from the opening;
filling the test reservoir with the fluid to a desired level;
flowing excess fluid from the fluid test reservoir to an overflow reservoir defined in the fluid tester; and
testing the fluid in the fluid test reservoir with at least one test probe connected to an electrical test circuit.
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Specification