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INTENDED USE

The 3M Model 701 Megohmmeter is designed to measure

the resistance of static control work surfaces and flooring.

This is to be done in a manner as described in this operator's

manual. Measurements described in this manual refer to the

ESD Association Standards S4.1 (Worksurfaces-Resistive

Characterization) and S7.1 (Floor Materials-Resistive

Characterization of Materials). These standards are

available from the ESD Association (315-339-6937).

Refer to the operator's manual for complete use of this

instrument. Use of other components may cause improper

performance and or an unsafe condition.

SAFETY SYMBOLS

This marking adjacent to another marking

or a terminal or operating device

indicates that the operator must refer to

an explanation in the Operating

Instructions to avoid damage to the

equipment and/or personal injury.

WARNING: Indicates a potentially

hazardous situation which, if not avoided,

could result in death or serious injury.

CAUTION: Indicates a potentially

hazardous situation which, if not avoided,

may result in minor or moderate injury. It

also may be used to alert against unsafe

practices that may cause property

damage.

SAFETY INFORMATION

The Operator's Manual contains cautions and warnings

alerting the user to hazardous operating and servicing

conditions. This information is flagged by CAUTION or

WARNING headings throughout this publication, where

applicable, and is defined in this manual under SAFETY

SYMBOLS. To ensure the safety of operating and servicing

personnel and to retain the operating integrity of this

Instrument, these instructions must be adhered to.

• Turn off the Instrument before connecting or

disconnecting test leads, or before moving test weights.

• Do not use this Instrument with any accessories not

specifically designed to be used with this product.

• Do not use this Instrument to measure live circuits.

• The circuitry enclosed in the Model 701 produces high

voltages. Make sure that the main selector switch is in

the OFF position before removing the back cover.

• Product intended for indoor use only.

• The test weights included in this kit are heavy. Exercise

care in handling.

• Improper battery installation will damage this

instrument.

INTRODUCTION

DESCRIPTION

The Model 701 Test Kit for Static Control Surfaces includes

a hand-held megohmmeter (here-in after referred to as the

"Instrument" or "Model 701") and accessories. The kit has

been specifically designed for evaluating the resistive

characteristics of static control surface materials and testing

installed surfaces as specified in ESD Association Standards.

The Instrument has four test functions which allow the user

to measure the resistance of a static control surface at either

of two test voltages, verify proper Instrument performance,

and check the electrical continuity of the test set-up.

ACCESSORIES

All accessories required for operating the Model 701 are

included in the test kit. Available replacement parts are

listed on page 6.

UNPACKING AND INSPECTION

Examine the shipping carton for obvious signs of damage.

If damage is suspected, open the carton and inspect the

Instrument for possible damage. If damage is noted, notify

the carrier and supplier immediately. If the Instrument

appears to be in good condition, read this Operator's Manual

in its entirety. Check that all items are included with the Kit,

then run a series of familiarity tests as instructed in this

manual.

CONTROLS, CONNECTORS,

AND INDICATORS

GENERAL

Before attempting any operation of the Instrument, become

familiar with each control. A thorough understanding of

how the Instrument operates will avoid undue mistakes and

prolong its useful life.

Figure 3-1. Controls, Connectors, and

Indicators

1. Main Selector Switch:

Main function selector switch allows selection of desired test

function.

2. TEST Button:

This button engages the Instrument and activates the test function

selected.

3. OHMS Scale:

This scale is used in conjunction with the SURFACE TEST functions

to indicate the amount of resistance measured.

4. CONTINUITY Scale:

This scale indicates the total resistance of the test set-up (meter,

leads, weights, and calibration plate) in the CONTINUITY TEST

function.

5. BATTERY Scale:

This scale indicates the charge level of the main battery of the

Instrument in the BATTERY TEST function by verifying the open

circuit output test voltage.

6. Test Jacks:

These jacks are used to connect the Instrument to the test leads.