Fluke 374 Gebrauchs- und Pflegehandbuch

December 2010

All product names are trademarks of their respective companies.

374/375/376

Clamp Meter

Calibration Manual

LIMITED WARRANTY AND LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material and workmanship under normal use and

service. The warranty period is three years and begins on the date of shipment. Parts, product repairs, and

services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of

a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in

Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal

conditions of operation or handling. Fluke warrants that software will operate substantially in accordance

with its functional specifications for 90 days and that it has been properly recorded on non-defective media.

Fluke does not warrant that software will be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers

only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is

available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the

applicable international price. Fluke reserves the right to invoice Buyer for importation costs of

repair/replacement parts when product purchased in one country is submitted for repair in another country.

Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair,

or replacement of a defective product which is returned to a Fluke authorized service center within the

warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center to obtain return

authorization information, then send the product to that service center, with a description of the difficulty,

postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following

warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke

determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal

condition of operation or handling, including overvoltage failures caused by use outside the product’s

specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair

costs and obtain authorization before commencing the work. Following repair, the product will be returned to

the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges

(FOB Shipping Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER

WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY

OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE

FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES,

INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or

limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not

apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other

decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other

provision.

Fluke Corporation

P.O. Box 9090

Everett, WA 98206-9090

U.S.A.

Fluke Europe B.V.

P.O. Box 1186

5602 BD Eindhoven

The Netherlands

11/99

To register your product online, visit register.fluke.com

Table of Contents

Title Page

Introduction........................................................................................................ 1

Contact Fluke..................................................................................................... 1

Safety Information ............................................................................................. 2

The Meter........................................................................................................... 5

Specifications..................................................................................................... 5

Electrical Specifications ................................................................................ 5

Mechanical Specifications............................................................................. 8

Environmental Specifications........................................................................ 8

Performance Tests.............................................................................................. 9

Calibration Adjustment...................................................................................... 10

Required Equipment...................................................................................... 10

Adjustment Procedure ................................................................................... 11

Maintenance....................................................................................................... 15

Clean the Product .......................................................................................... 15

Battery Replacement ..................................................................................... 15

User Replaceable Parts ...................................................................................... 16

374/375/376

Calibration Manual

iii

List of Tables

Table Title Page

1. Symbols.................................................................................................................. 4

2. Performance Tests.................................................................................................. 9

3. Required Equipment............................................................................................... 10

4. Adjustment Procedure............................................................................................ 13

5. User Replaceable Parts........................................................................................... 16

374/375/376

Calibration Manual

List of Figures

Figure Title Page

1. The Meter ............................................................................................................... 5

2. Position Sensitivity................................................................................................. 6

3. Calibration Activation............................................................................................ 11

4. Current Calibration Setup....................................................................................... 12

5. Changing the Batteries ........................................................................................... 16

374/375/376

Calibration Manual

Introduction

XWWarning

Read "Safety Information" before you use the Product.

This manual explains the Calibration Adjustment for the 374, 375, and 376 Clamp Meters

(the Product). Please see the 374/375/376 Users Manual for usage information.

Contact Fluke

To contact Fluke, call one of the following telephone numbers:

•Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)

•Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)

•Canada: 1-800-36-FLUKE (1-800-363-5853)

•Europe: +31 402-675-200

•Japan: +81-3-3434-0181

•Singapore: +65-738-5655

•China: +86-400-810-3435

•Anywhere in the world: +1-425-446-5500

Or, visit Fluke's website at www.fluke.com.

To register your product, visit http://register.fluke.com.

To see, print, or download the latest manual supplement, visit

http://us.fluke.com/usen/support/manuals.

374/375/376

Calibration Manual

Safety Information

A Warning identifies conditions and actions that pose hazard(s) to the user. A Caution

identifies conditions and procedures that could cause Meter damage, equipment under

test damage, or permanent loss of data.

Symbols used on the Product and in this manual are explained in Table 1.

XWWarning

To prevent possible electrical shock, fire, or personal injury:

•Use the product only as specified, or the protection supplied

by the Product can be compromised.

•Examine the case before you use the Product. Look for

cracks or missing plastic. Carefully look at the insulation

around the terminals.

•Do not measure current while the test leads are in the input

jacks.

•The battery door must be closed and locked before you

operate the Product.

•Remove all probes, test leads, and accessories before the

battery door is opened.

•Do not use test leads if they are damaged. Examine the test

leads for damaged insulation, exposed metal, or if the wear

indicator shows. Check test lead continuity.

•Do not use the Product if it operates incorrectly.

•Do not use the Product around explosive gas, vapor, or in

damp or wet environments.

•Use only type AA batteries, properly installed in the Product

case, to power the Product.

•Hold the Product behind the tactile barrier. See Figure 1, .

•Replace the batteries when the low battery indicator ()

shows to prevent incorrect measurements.

•Use only specified replacement parts.

•Have an approved technician repair the Product.

•Do not touch voltages >30 V ac rms, 42 V ac peak, or 60 V

dc.

•Do not apply more than the rated voltage, between the

terminals or between each terminal and earth ground.

•Keep fingers behind the finger guards on the probes.

•Connect the common test lead before the live test lead and

remove the live test lead before the common test lead.

•Do not work alone.

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