Humboldt H-4212MH Quick Start Manual

Pocket shear vane tester

The Humboldt H-4212MH Pocket Shear Vane Tester comes with 3

vanes and an L-wrench to attach them to the unit. The small vane is

pre-attached to the unit and the standard and large vanes are attached

by sliding them over the small vane, aligning the set screw with the

indent on the small vane and securing them with the set screw.

To Use:

1) Mount the desired vane to the unit and make sure it is secure.

2) Align the "0" on the inner dial on top of the unit with the mark

on the outer ring using a counter-clockwise rotation while holding

the outer ring.

3) The test surface should be at least two inches in diameter and

relatively flat.

Testing Equipment for

HUMBOLDT

1.800.544.7220 • www.humboldtmfg.com • 708.456.6300

Construction Materials

Table of Contents

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Page 1 HUMBOLDT 1.800.544.7220 • www.humboldtmfg.com • 708.456.6300 The Humboldt H-4212MH Pocket Shear Vane Tester comes with 3 vanes and an L-wrench to attach them to the unit. The small vane is pre-attached to the unit and the standard and large vanes are attached by sliding them over the small vane, aligning the set screw with the indent on the small vane and securing them with the set screw.
Page 2 4) Press the unit into the soil sample until the blades are covered. 5) While maintaining a constant pressure, rotate the outer ring of the unit. Turn the outer ring until failure occurs. (The speed of rotation should be a speed that accomplishes failure within 5 to 10 seconds.) 6) Release the outer ring, slowly, once failure has ocurred.