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How to Use Your
AccuPerc® Digital Percometer
The AccuPerc® Digital Percometer is the easiest device ever invented to perform
uniform percolation tests. Four simple steps is all it takes for each Perfectly AccurateSM perc test. An AccuPerc® test is simple enough for entry-level employees
to do, but is so accurate it’s used by the most experienced professionals.
The AccuPerc® system measures RAW MPI. Your actual reported MPI will be
determined by multiplying the AccuPerc® MPI by the necessary correction factor
based on the actual diameter of your test hole.
1. Dig perc test hole. 6 inches (15cm) in diameter is recommended. Follow local
guidelines and technology requirements to determine test hole depth. Clear hole
bottom of all loose material. Gently place gravel in bottom of hole.
2. Place AccuPerc® Sensor on gravel bed. Add minimal additional gravel around
sensor to physically stabilize it in test hole.
3. Slowly ﬁll pre-soaked test hole with water until AccuPerc® Controller display
resets to ‘00:00’. After a few minutes, as the water percolates into the soil, the
Controller will start to calculate the raw MPI of the soil below the test hole.
4. Read the raw MPI on the AccuPerc® Controller when the controller beeps and
the display stops. Your actual reported MPI will be determined by multiplying the
AccuPerc® MPI by the necessary correction factor based on the actual diameter
of your test hole. Repeat tests as necessary.
Engineered & Manufactured by:
The Carpenter Group USA LLC
Test and Measurement Instruments Division
Post Ofﬁce Box 5698
Auburn CA 95604-5698
1-800-743-7127
Fax: 1-800-743-0541
www.accuperc.com
OPS070708 Rev. 02 ©2008 The Carpenter Group USA LLC
Assembled in the USA from foreign & domestic components
United States & International Patents Pending
AccuPerc® is a registered trademark used under license
Two-Year Limited Warranty
THE CARPENTER GROUP USA LLC (“TCGUSA”) warrants only to the original purchaser of this
product from a TCGUSA-authorized reseller or distributor that this product will be free from defects
in material and workmanship under normal use and service for two years after date of purchase.
TCGUSA reserves the right, before having any obligation under this limited warranty, to inspect
the damaged TCGUSA product, and all costs of shipping the product to TCGUSA for inspection
shall be borne solely by the purchaser. In order to recover under this limited warranty, Purchaser
must make claim to TCGUSA within 60 days of occurrence, and must present acceptable proof of
original ownership (such as original receipt, warranty card registration, on-line registration, or other
documentation TCGUSA deems acceptable) for the product. TCGUSA, at its option, shall repair or
replace the defective unit covered by this warranty. Please retain the dated sales receipt as evidence
of the original purchaser’s date of purchase. You will need it for any warranty service. In order to keep
this limited warranty in effect, the product must have been handled and used as prescribed in the
instructions accompanying this warranty. This limited warranty does not cover any damage due to
accident, misuse, abuse or negligence. This limited warranty is non-transferable and does not apply
to any purchaser who bought the product from a reseller or distributor not authorized by TCGUSA,
including but not limited to purchases from internet auction sites. This warranty does not affect any
other legal rights you may have by operation of law. Contact TCGUSA at www.accuperc.com or at
the technical support number listed below for warranty service procedures.
DISCLAIMER OF WARRANTY
EXCEPT FOR THE LIMITED WARRANTY PROVIDED HEREIN, TO THE EXTENT PERMITTED BY
LAW, TCGUSA DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ALL WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. TO THE
EXTENT THAT ANY IMPLIED WARRANTIES MAY NONETHELESS EXIST BY OPERATION OF
LAW, ANY SUCH WARRANTIES ARE LIMITED TO THE DURATION OF THIS WARRANTY. SOME
STATES/PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY
LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.
LIMITATION OF LIABILITY
REPAIR OR REPLACEMENT OF THIS PRODUCT, AS PROVIDED HEREIN, IS YOUR EXCLUSIVE REMEDY. TCGUSA SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING, BUT NOT LIMITED TO, LOST REVENUES, LOST PROFITS,
RENTAL OF REPLACEMENT EQUIPMENT, DOWNTIME, DAMAGE TO PROPERTY, AND THIRDPARTY CLAIMS, ARISING OUT OF ANY THEORY OF RECOVERY, INCLUDING WARRANTY,
CONTRACT, STATUTORY OR TORT. NOTWITHSTANDING THE TERM OF ANY LIMITED WARRANTY OR ANY WARRANTY IMPLIED BY LAW, OR IN THE EVENT THAT ANY LIMITED WARRANTY FAILS OF ITS ESSENTIAL PURPOSE, IN NO EVENT WILL TCGUSA’S ENTIRE LIABILITY
EXCEED THE PURCHASE PRICE OF THIS PRODUCT. SOME STATES/PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO
THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. THIS WARRANTY GIVES
YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS THAT VARY FROM
STATE TO STATE AND PROVINCE TO PROVINCE.
The Carpenter Group USA LLC
Test and Measurement Instruments Division
Post Ofﬁce Box 5698, Auburn CA 95604-5698
1-800-743-7127 Fax: 1-800-743-0541
www.accuperc.com