General MM1E User Manual

PIN-TYPE LED BAR GRAPH

MOISTURE METER

USER’S MANUAL

MM1E

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Please read this manual carefully and thoroughly before using this product.

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 3 –4

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

What’s in the Blister Pack . . . . . . . . . . . . . . . . . . 4

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . 5

Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . 6

Install Battery . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating Instructions . . . . . . . . . . . . . . . . . . 6 –8

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . 9

Warranty Information . . . . . . . . . . . . . . . . . . . . . . 9

Return for Repair Policy . . . . . . . . . . . . . . . . . . . 10

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INTRODUCTION

Thank you for purchasing General Tools & Instruments’ MM1E
Pin-Type LED Bar Graph Moisture Meter. Please read this
user’s manual carefully and thoroughly before using the
meter.

The MM1E is designed for applications in woodworking,
building construction and home inspection. Examples include:

• Checking for moisture on or below the surface of
carpets and sub-flooring

• Measuring the surface moisture content of wood,
and drywall before painting/wallpapering, sealing
or treating

• Locating water leaks in roofs, floors and walls

• Selecting dry lumber

The meter bases its measurements on the relationship
between the moisture content of a material and its electrical
conductivity. The wetter a material, the higher its conductivity.
The two replaceable steel pins at the top of the MM1E serve
as the electrodes of a conductance meter optimized for
measuring moisture content. The meter displays
measurements in the unit %WME (Wood Moisture Equivalent).

For hard materials like wood, the meter’s readings largely
reflect surface moisture content because:

1) Moisture close to a surface has a greater effect on a
reading than moisture deep below it; and 2) The pins of the
MM1E are only 3/8 in. (10mm) long and cannot be driven
deep into a hard material. For softer materials like soil, paper
or powders, readings are more likely to reflect the average
moisture level of the material between its surface and the
penetration depth of the pins (normally far less than 3/8 in.).

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The MM1E’s front-panel bar graph of 10 LEDs measures
%WME (Wood Moisture Equivalent) over two different ranges:
7 to 15% (LOW), and 16 to 35% (HIGH). A slide switch on the
back of the meter requires the user to choose the right range
for the material under test. The same switch functions as the
power switch. Whenever the meter is powered on, the bar
graph momentarily indicates remaining battery life. After
powering on, the meter’s calibration can be checked by
inserting the test pins into holes in the pin protection cover.

The MM1E is powered by a “9V” battery included in the
blister pack.

KEY FEATURES

• 10-LED display

• 7 to 35% measurement range, with separate HIGH
and LOW scales

• Protective cap doubles as calibration checker

• Full Battery and Low Battery indications

WHAT’S IN THE BLISTER PACK

The MM1E comes in a plastic blister pack along with a “9V”
battery, a protective cover for the test pins and this user’s
manual.

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