Mini-Tensiometers

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Jun
25

Mini-Tensiometers are used under conditions in which a tensiometer with a full-size ceramic cup cannot be used. These conditions might include: in a greenhouse environment to monitor plants growing in small containers; in laboratory column studies; or outside under turf, for measurements very near the surface.

The mini-tensiometers are constructed with a length of flexible tubing which allows the ceramic sensing cup to be placed exactly where it is needed.  Several different ceramic cup sizes and shapes are available, ranging in size from 2 mm to 13 mm in diameter.  The larger water reservoir tube is then placed in a more convenient location.

The silicon-rubber endcap allows periodic measurements to be made with a septum-and-needle-type portable electronic transducer,  or a dial gauge can be attached.  Continuous measurements can be made by attaching an electronic transducer and wiring the transducer to an electronic datalogger.

Features:

• variety of small ceramic cup sizes and shapes
• 22-mm (0.87-in) diameter PVC water reservoir/body tube
• silicon-rubber endcap