Fluke 27 Bedienungsanleitung

Multimeter

Users Manual

For IEC 61010 CAT III Meters Only

October 1998 Rev.1, 5/02

All product names are trademarks of their respective companies.

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Users Manual

LIMITED WARRANTY & LIMITATION OF LIABILITY

Each Fluke 20, 70, 80, 170 and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein, “lifetime” is defined as seven

years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from the date of purchase. This warranty does not cover

fuses, disposable batteries, damage from neglect, misuse, contamination, alteration, accident or abnormal conditions of operation or handling, including failures

caused by use outside of the product’s specifications, or normal wear and tear of mechanical components. This warranty covers the original purchaser only and is not

transferable.

For ten years from the date of purchase, this warranty also covers the LCD. Thereafter, for the lifetime of the DMM, Fluke will replace the LCD for a fee based on

then current component acquisition costs.

To establish original ownership and prove date of purchase, please complete and return the registration card accompanying the product, or register your product

on http://www.fluke.com. Fluke will, at its option, repair at no charge, replace or refund the purchase price of a defective product purchased through a Fluke

authorized sales outlet and at the applicable international price. Fluke reserves the right to charge for importation costs of repair/replacement parts if the product

purchased in one country is sent for repair elsewhere.

If the product is defective, 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. Fluke will pay return

transportation for product repaired or replaced in-warranty. Before making any non-warranty repair, Fluke will estimate cost and obtain authorization, then invoice

you for repair and return transportation.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR

IMPLIED. 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. AUTHORIZED RESELLERS ARE NOT AUTHORIZED TO EXTEND ANY DIFFERENT WARRANTY ON

FLUKE’S BEHALF. Since some states do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of

liability may not apply to you. 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 Fluke Europe B.V.

P.O. Box 9090 P.O. Box 1186

Everett WA 5602 B.D. Eindhoven

98206-9090 The Netherlands

Visitthe Fluke website at: www.fluke.com

Table of Contents

Title Page

Multimeter Safety .......................................................................................................... 1

Operating Features ....................................................................................................... 4

Applications................................................................................................................... 8

Voltage, AC/DC........................................................................................................ 8

Current, AC/DC ........................................................................................................ 8

Resistance and Diode Test/Continuity...................................................................... 9

Resistance Measurement.................................................................................... 9

Diode Test and Continuity ................................................................................... 9

Conductance ............................................................................................................ 9

Leakage Testing....................................................................................................... 10

Analog Bar Graph Application....................................................................................... 11

Using the Analog Bar Graph..................................................................................... 11

Specific Applications--Nulling ................................................................................... 12

Specific Applications--Contact Bounce..................................................................... 12

Users Manual

Specific Applications--Checking Capacitors.............................................................. 12

Specific Applications--Noisy Resistance Measurements........................................... 15

Operator Maintenance................................................................................................... 15

Battery Installation or Replacement.......................................................................... 16

Fuse Test.................................................................................................................. 18

Fuse Replacement.................................................................................................... 18

General Maintenance................................................................................................ 19

Service........................................................................................................................... 21

Specifications................................................................................................................. 22

Multimeter Safety

Read this information before using the meter. This meter

complies with EN 61010-1:1993, ANSI/ISA S82.01-1994

and CAN/CSR C22.2 No. 1010.1-92 Overvoltage

Category III. Use the meter only as specified in this Users

Manual, otherwise the protection provided by the meter

may be impaired.

•A Warning identifies conditions and actions that pose

hazard(s) to the user.

•A Caution identifies conditions and actions that may

damage the meter or the equipment under test.

WWarnings

To avoid possible electric shock or personal

injury:

•Inspect the meter before using it. Check

for cracks, missing plastic, or other

possible damage to the case. Make sure

that the insulation surrounding the

connectors is intact.

•Inspect the test leads for damaged

insulation, exposed metal, and continuity.

Replace damaged test leads before using

the meter.

•Do not use the meter if it operates

abnormally. Protection may be impaired.

When in doubt, have the meter serviced.

•Do not operate the meter around

explosive gas, vapor or dust.

•Do not apply more than the rated voltage

(1000 V) between terminals or between

any terminal and earth ground. The rated

voltage is marked on the meter.

•Before each use, verify the meter’s

operation by measuring a known voltage.

•Use only specified replacement parts.

•Use caution when working above 30 V ac

rms, 42 V ac peak, or 60 V dc. Such

voltages pose a shock hazard.

•When using the probes, always place

fingers behind the probe finger guards.

•Connect the common test lead before

connecting the live test lead. When

disconnecting test leads, disconnect the

live test lead first.

•Make sure the battery door is closed and

latched before operating the meter.

Users Manual

•Remove test leads from the meter before

opening the battery door.

•Use only a properly installed, single 9 V

battery to power the meter.

•Follow all equipment safety procedures.

•Check the meter’s fuses (see “Testing the

Fuses”) before measuring current.

•Never touch the probe to a voltage

source when the test leads are plugged

into the 10 A or 40 mA input jacks.

•The use of makeshift fuses and the short-

circuiting of fuse holders is prohibited.

•To avoid false readings, which could lead

to possible electric shock or personal

injury, replace the battery as soon as the

battery indicator (U) appears.

International symbols used on the meter and in this

manual are explained in Table 1.

Table 1. International Electrical Symbols

OOFF (power)

SWITCH POSITION GROUND

ON (POWER)

SWITCH POSITION SEE EXPLANATION IN

MANUAL

AC-ALTERNATING

CURRENT DOUBLE INSULATION

(Protection Class II)

DC-DIRECT CURRENT FUSE

EITHER DC OR AC BATTERY

Multimeter Safety

Table 2. Input Terminals and Limits

Function Input Terminals

Red Lead Black Lead

Min Display

Reading Max Display

Reading Maximum Input

CI VOD COM 0.001 V 1000 V 1000 V

JF VOD COM 0.1 mV 320.0 mV 1000 V

(nS) VOD

VOD

COM

COM 0.1 e

0.01 nS 32.00 Me

32.00 nS 1000 V

1000 V

SVOD E 0.001 V 2.08 V 1000 V

A COM 0.01 A 20.00 A* 11 A 1000 V Fast Fuse**

AE U COM 0.01 mA 320.0 mA 44/100 A 1000 V Fast Fuse**

MN U COM 0.1 µA 3200 µA 44/100 A 1000 V Fast Fuse**

*10A continuous, 20A overload for 30 seconds maximum

**Fuse protected

Users Manual

Operating Features

The following features are keyed by number to the

illustration inside the front cover.

Digital Display

3200 count, liquid crystal display with automatic decimal

point positioning. Updated two times per second. When

the meter is first turned on, all display segments appear

while the instrument performs a brief power-up self-test.

Function Selector Rotary Switch

Turn to select any of 10 different functions, or OFF. Refer

to the Specifications for available ranges and to Table 2

for input terminals and limits.

CVolts dc

JMillivolts dc

IVolts ac

FMillivolts ac

OOhms (resistance), also conductance (1/e)

in nanosiemens (nS)

SContinuity or diode test

AMilliamps or amperes dc

MMicroamps dc

EMilliamps or amperes ac

NMicroamps ac

Volt, Ohms, Diode Test Input

Terminal

Input terminal used in conjunction with the volts, mV (ac

or dc), ohms, or diode test position of the function

selector rotary switch.

DCOM

Common Terminal

Common or return terminal used for all measurements.

Milliamp/Microamp Input Terminal

Input terminal used for current measurements up to 320

mA (ac or dc) with the function selector rotary switch in

the mA or µA positions.

Amperes Input Terminal

Input terminal used for current measurements up to 10A

continuous (20 A overload for 30 seconds) with the

Operating Features

function selector rotary switch in the mA/A position (ac or

dc).

GRANGE R

Manual Range Mode

Pushbutton

Press once to enter manual range mode, press again to

increment range, press and hold for 2 seconds to return

to autorange. Meter returns to autorange if the function

selector is switched to any other position. There is no

autorange annunciator; absence of the manual range

annunciator indicates the meter is in autorange. If

RANGE is depressed (>1 second) while the function

switch is moved from OFF to any ON position, manual

ranging will be selected in all functions.

HREL

Relative Mode Pushbutton

Press momentarily to enter the Relative mode and store

the displayed reading. The display will read zero. Press

again to update the stored digital reading. Press and hold

for 2 seconds to exit the Relative mode. The Relative

mode stores a digital reading and displays the change

(difference) between the stored reading and any following

reading. For example, if the stored reading is 15.00 V and

the present readings is 14.10 V, the display will indicate -

0.90V. The analog bar graph continues to display the

actual reading (14.10V). If the difference exceeds 3999

counts (without overloading the input), OF (overflow) is

displayed. The Relative mode selects manual ranging;

changing ranges automatically exits the Relative mode.

IMIN/MAX

Mode Pushbutton

Press momentarily to enter MIN/MAX mode, press again

to toggle between MIN and MAX indications. Press and

hold for 2 seconds to exit MIN/MAX mode. The meter

stores the minimum and maximum digital readings, and

will display either reading as selected by the operator.

Press the HOLD/RESET button to reset the MIN/MAX

readings to the present input. The MIN/MAX mode

selects manual ranging; use a range that can record the

maximum anticipated input. Range changes reset

previously recorded MIN/MAX readings. Exiting the

MIN/MAX mode does not reset the previously recorded

readings unless the range or function is changed. The

MIN/MAX mode overrides the Touch Holdmode.

WWarning

To avoid electric shock or personal injury, do

not use Touch Holdto determine that

circuits with dangerous voltages are de-

energized. Touch Holdwill not capture

unstable or noisy readings.

Users Manual

JHOLD H

Touch Hold



Mode Pushbutton

Press momentarily to enter Touch Holdmode. In Touch

Hold, the meter captures a stable measurement and

holds it in the display. The operator can watch the probes

while taking measurements in difficult or hazardous

circuits, then look at the display when convenient. The

meter beeps and the display is automatically updated

each time a new, stable measurement is made. Press

momentarily to manually update reading. Press and hold

for 2 seconds to exit Touch Holdmode. If HOLD is

depressed (>1 second) while the function switch is moved

from OFF to any ON position, the Touch Holdmode will

only update to a new reading when the HOLD button is

pressed and automatic Touch Holdupdates are

defeated. This is useful when you want to take a reading

at a specific time and hold it.

KMIN

Minimum Annunciator

Indicates that the meter is in the MIN/MAX recording

mode, and the value displayed is the minimum digital

reading taken since reset or since entering MIN/MAX.

Refer to item 9 for operation.

LMAX

Maximum Annunciator

Indicates that the meter is in the MIN/MAX recording

mode, and the value displayed is the maximum digital

reading taken since reset or since entering MIN/MAX.

Refer to item 9 for operation.

Relative Annunciator

Indicates that the meter is in the Relative mode and that

the value displayed is relative (the difference between the

present measurement and the previously stored reading).

Refer to item 8 for operation.

Touch Hold



Mode Annunciator

Displayed when the Touch Holdmode is in use. Refer to

item 10 for operation.

OMke

Resistance Annunciators

The appropriate annunciator (e, k, or M) is displayed for

the resistance range in use.

PnS

Conductance Range Annunciator (nS)

Top range of the resistance function is the conductance

range. Displays conductance in nS (nanosiemens). 1000

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