Humboldt HM-3930 User Manual

06.10

product manual

HM-3930

Pin-Hole Dispersion Device

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HM-3930 Pin-Hole Dispersion Device (ASTM D4647):

This test is used for evaluating clay soils for erodibility by flowing water through a
small hole that is drilled through the compacted specimen. Refer to ASTM D4647 for
complete information.

Compaction using the Harvard Tamper Rod (H-4156.16 and the pin-hole test cylinder is
typical. The test chamber has a unique clamping ring for holding the stainless steel mold
to the base while compacting the sample. Included with the chamber are screens, base
stand, constant head reservoir, tubing, connections and a tool for drilling the pinhole.
The end cap has a pilot hole for drilling the 1.0mm (.040") hole through the sample.

When using the HM-3930, the top screen and inlet sand described in the ASTM spec,
are eliminated by having the pin-hole centering guide integral with the head plate.

All aluminum parts are anodized to corrosion resistance.

Pin-hole Dispersion unit shown disassembled.

ALERT: DO NOT THROW AWAY THE DRILL WITH THE PACKAGING.
IT IS TAPED TO CARDBOARD AND LABELED.

Warranty

Humboldt Mfg. Co. warrants its products to be free from defects in material or
workmanship. The exclusive remedy for this warranty is Humboldt Mfg. Co.,
factory replacement of any part or parts of such product, for the warranty of this
product please refer to Humboldt Mfg. Co. catalog on Terms and Conditions
of Sale. The purchaser is responsible for the transportation charges. Humboldt
Mfg. Co. shall not be responsible under this warranty if the goods have been
improperly maintained, installed, operated or the goods have been altered or
modified so as to adversely affect the operation, use performance or durability
or so as to change their intended use. The Humboldt Mfg. Co. liability under
the warranty contained in this clause is limited to the repair or replacement of
defective goods and making good, defective workmanship.

Humboldt Mfg. Co.

875 Tollgate Road
Elgin, Illinois 60123 U.S.A.

Testing Equipment for

HUMBOLDT

www.humboldtmfg.com

U.S.A. Toll Free: 1.800.544.7220

Voice: 1.708.456.6300

Fax: [phone]

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