Model 4820 Earth Pressure "Jackout" Cell; Model 4830 Push-In Pressure Cell; Figure 8 - Model 4820 Jackout; Figure 9 - Model 4830 Push -I N - Geokon 4820 Instruction Manual

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1.3.4 Model 4820 Earth Pressure "Jackout" Cell

Model 4820 Earth Pressure Cells are designed specifically for the measurement of soil
pressures on the back side of slurry walls. The pressure transducer housing is connected
directly and perpendicular to the thick back plate.
6"
150 mm
Bottom View

1.3.5 Model 4830 Push-In Pressure Cell

Model 4830 Push-In Pressure Cells are designed to be pushed in place for the
measurement of total pressures in soils and earth fills. The semiconductor pressure
transducer enables measurement of dynamic pressures. A thread is provided on the end of
the cell to allow for installation using lengths of pipe or drill rods.

Pressure Cell

Mounting Hole
(6 places, 6.75 mm ID)
5"
125 mm
Figure 8 - Model 4820 Jackout Pressure Cell
Figure 9 - Model 4830 Push-In Pressure Cell
Back Plate (with mounting holes)
Transducer Housing
(4 conductor, 22 AWG)
Side View
Instrument Cable