B+K precision 2831C Manuale utente

lnstruction

Manual

Model

2831C3llzDigit

BenchType

Digital

Multimeter

TEST

INSTRUMENT

SAFETY

WARNING

An electrical

shock

causing

l0 milliamps

of current

topass

throulhthe

heartwill stop

mosthuman

heartbeats.

Voltage

aslow

as35volts

dcoracrms

should

beconsidered

dangerous

and

hazardotrs

since

it canproduie

afatal

cgrrent

gnder

certain

conditions.

Higher

voltages

areeven

dangerous.

Observe

the

following

safetyprecautions:

l. Donotexceed

thefollowinginput

ratings.

Personal

injury

ordamage

totheinstrument

may

result.

VOLTS (Range

2v-lkv) 1200V (dc+ac

$eak) DC

VOLTS

(Range

200mv)

750V

(dc+ac

pk)

ACVOLTS (Range

2V-lkv) 1000V rms ACVOLTS

(Range

200mv)

750V

rms

OHMS

2001tA*2

204

COM

450

V dc

oracnns

2A (fuse

protected)

20A (untused)

Donotfloat

morethan

500volts

fromearth

sround.

2. Removetestleadsffom the instrumentandpoint of measurement

beforereplacingfuses

or performing anyservicing on the

multimeter.

3. Use

only shrouded

safety

typetestleads

likethosesupplied.

Periodically

inspect

insulation

for any

burns,

cuts,

orbreaks.

Neverusetest

leads

with exposed

barewires

orpoor insulation.

4. Turn offequipmentwhile making

test

comections

in high-voltagg

circuits.

removing

power. Discharge

high-voltagecapacitors

after

5. For voltage

or current

measwements

in highvoltage

equipment,

donottouch

equipment,

meter,ortestleads

while poweris

applied.

6. If possible,

famlliarizeyourself

with theequipment

beingtested

and

thelocation

of itshighvoltage

points.

However,

remember

thathigh voltage may appear

atunexpectedpointsin d6fectiveequipment.

7. Useaninsulated

floor material

or floormatto standon,andanin5ulated

work benchsurface:

makecertain

such

surfacesare

not dampor wet. (continued

oninside

back

cover)

InstructionManual

for

Model2831C

BenchType

3-112

Digit

MULTIMETER

KKPRECilsffEJ

1031

Segovia

Circle,Placentia

92870

TABLE

OFCONTENTS

Page

TEST INSTRUMENT SAFETY .InsideFront Cover

INTRODUCTION. .......I

SPECIFICATIONS. .......2

OPTIONALACCESSORIES... .........5

CONTROLSANDINDICATORS ......,.6

CONTROLSANDINDICATORS ........7

OPERATINGINSTRUCTIONS.. ........8

Preliminary .....8

VoltageMeasurements ........8

Page

CurrentMeasurements

... ..........9

ResistanceMeasurements

... .......9

ContinuityTesting ....10

DiodeTesting... ....10

MI{TNTENANCE.. ...... II

huseReplacement ....11

lineVoltageSelection .......12

f,estleads .....12

InstrumentRepairService .....12

WARRANTY

SERVICEINSTRUCTIONS.. .....14

LIMITEDONE-YEARWARRANTY.... .......15

INTRODUCTION

The B & K PrecisionModel 28318 bench-type3-ll2

digit multimeter is a highly versatile instrument offering

standardfunctions of voltage, current (with a 20 A range),

and resistance

measurements.

[n addition, it also includes

diodetestandcontinuity functions.

The instrument is easy to use, as all functions are

selected

from apanel

of very logically laidout andidentified

pushbuttons.

The 3-ll2 digit LED display features0.43"'

digits

with automatic

minussignand

auto-zero

capability.

The unit is housed

in a rugged,

attractive

plasticcase,

andthe

carrying

handledoubles

asa sturdy

tilt stand.

Thetilt standcan

be folded on top of the instrumentto allow stacking with your

other instrument.

Safety featuresinclude safetyjacks, safety test leads,and

extensive

overload

protection,including

ahighenergy

fuse.

B & K Precision offersa full line of optionalaccessories

for the Model 28318 which canfurtherexpand

thecapabilities

and usefulness

of the instrument.Pleasecontact your locai

B & K Precision distributor or B & K Precision for more

information

onthelatestaccessories.

SPECIFICATIONS

All accuraciesspecified

at23"C + 5 oC,757o

maximum AC VOLTAGE

relativehumidity.

DCVOLTAGE

RANGE MAXIMUM

INDICATION ACCURACY MAX

INPUT

200mV t199.9mV

!(O.1o/oof reading

count)

Allranges

750V

(dc+acpeak)

2V 11.999

V1200v

(dc+ac

peak)

20v +19.99V

200v 1199.9V

1200v 11200

Max.Input

Normalmoderejection: 50dB minimumat 50160

Hz.

Commonmoderejection: 120dB minimumatdcand

50160Hz with I kO unbalance.

I second.

InputImpedance: 10MO.

ptoducl

Inputimpedance. 10MClin

parallelwith

100

pF.

Commonmode

rejection: 60

dBminimum

at5060 Hz.

Response

time: 3seconds

maximum.

Responsetime:

TRIIE RMS:FROM lE/o tD10V/o

OFRANGE

RANGE I/IAXIMUM

INDICATIONFREQENCY ACCRACY

MAX

INPUT

VOLTAGE

200mV '199.9mV 4oFtsb1Kl-E

1KFtsb10Kt-E

10Klkb20Klh

nrcb.b&Ki

t(0.5%oftdg+46651

t(2% ofrdg+acnbl

t(5% oftdg{'4cnb1

t(1flo ofrdg+46651 750

Vrms

2V 1.gSSV 4or-tsb

1Kt-b

1KFLto

10KJ-L

10Kt-tsb20Klb

20K]-tsb40KlE

(0.5% ofrdg+acnbl

(2/o oftdgr<q6;

(5% oftdg+4cnts)

(1ry0 ofrdq+4cnb) 1000

rms

20v 't9.99V 4oFtsbl Klh

1Khtrtc

10KFL

10Kl-tsb20KI-L

20Kl-tsb40KlL

t(0.5%ofrdg+4cnb)

{2% ofrdg+acnbl

t(5% oftdg+466;

t(ltrlo ofrdg+4665;

200v 199.9/ 40Flzto 1KHz

1KFlzto

10Kl-lzt(0.5%oftdg+acnt)

t(2% ofrdg+4cnts;

1000v 1000

Max.Inpul A0tLlo 1lG-lz{0.5% ofrdg+cnb)

*Notto exceedthe

Volt-Her?uoduct of

SPECIFICATIONS

DCCTIRRENT

RANGE MAXIMUM

INDICATION ACCURACY MAXIMUM

INPUT

200uA 1199.9

uA L(0.2%

ofreading

+ 1count) 2A

2mA t1.999

20mA t19.99mA

200mA t199.9

2000mA t1999

mA r(0.3%

ofreading

+ 1

count)

204 119.99

A20A

through

Ainput

iaqk

Maximum burden

voltage: 0.3V at200mA.

(with supplied I V at2000mA.

AC CURRENT

TRUERMS:FROM lUY"

ta ljV/o OFRANGE

Maximumburden

voltage: 0.3V at200mA.

(with supplied 1V at

2000mA.

test

leads)

Response

time:

2.5Y (0.25

V across

20A

jacks)

20A.

I second.

Overload

protection: 2 N250V fusein

series

onmA input

jack.

20A rangeunfused.

testleads)

Response

time:

2.5V (0-25

V across

20A

jacks)

at20 A.

3 second.

Overload

protection: 2 N250V fuseinseries

mAinput

jack.

20A

ranseunfused.

RANGE MAXIMUM

INDICATIONFREQUENCY ACCURACY MAXIMUM

INPUT

200

pA 199.9

pA 40Hzto10KHz

10KHzto20KHz t(1%ofrdg+4cnb'

{2% ofrdg+acnE'

2mA 1.999

mA 40Hzto10KHz

1OKFlzto20KHz

{1% oftdg+4orb)

t(2% ofrdg+4cnb)

20mA 19.99

mA 40Hzto

1OKHz

lOKHzto20KHzt(1%oftdg+4cnb;

t(2% ofrdg+acnbl

200mA 199.9mA 40Hzto

10KHz

1OKHzto20KHz t(1% ofrdg+qcnS)

{2% ofrdg+4cr"ts)

2000

mA 1999mA 4OHztoZKHz (1% ofrdo+4cntsl

204 19.99

A4OHzto2KHz t(1%ofrdg+acnts;

20Ahrough

Z0Ainputiac*

SPECIFICATIONS

RESISTANCE

RANGE MAXIMUM

NDICATION ACCUR,ACY TEST

SURRENTOVERLOAD

PROTECTION

200

o199.9c) 1(0.2%

rdq+2cntsl 4.2m4

450V

dc/acrms

Allranges

2Kl) 1.999

KC)

{0.2% ofrdg+1cnt)

42O

Kf) 19.99

Kc) 42 uA

200Kc) 199.9KC) 4.2

2000Kc) 1999Kc) 0.42

MO 19.99

Mo t (0.5%

ofdq+1cnts) 0.042

GENERAL SPECIF'ICATIONS

Temperature

range:

Operating:

Storage:

0'C to

+40t.

-20"C to

+60'C.

Humidity range: 90%omaximumto +3511

.except

80oZmaximumon 2000

k O and

20M O range.

70Yomaximum

to+40t (non-condensing).

opencircuit

volage: 5 V maximum

loaded

with Maximum

common 500

l0 M e r4ueuwrtl modevoltage:

Display: LED, 0.43"character

height.

Response

time: 3 second

( 20 seconds

20 MO range

) Power

requirements: 100/120/2201240

Y, 50160Hz,

5W.

DIODETEST Dimeensions

([xHxD): 261

7t x

2ll mm

Tested

on2 Kf) range. I mA test

current. (10.21

x 2.j9 x 8.3)in

CONTINUITY weight: r.63Kg (3.6

lbs).

Audio tone

soundswhen

resistance

islessthanl0 ohms

typical. Accessories

supplied: Testleads

(2)

Instruction

manual

(l)

Spare2Atuse(2)

OPTIONAL

ACCESSORIES

ModelPR-21

Isolatior/Direct

Probe

ModelTP-30B

Temoerature

Probe

Model PR-23

Demodulator

Probe

AdditionalAfcessories:

TL-2A

ReplacementTestLeads

ModelPR-28A

High-voltageProbe

See

yourlocal

B & K Precision

distributor

formore

details.

GONTROLS

AND

INDICATORS

l. V-O Jack Inputjack for volhge measuremen!

resistance

measurement.

Diodetest andcontinuitytest.

2. COMmon Jaclc Inputforcommontestleadforall

measuremeffs.

3.mA Jack Inputfor200 pA to 2A dcorac

currentranges.

4. 20A Jack Inputfor 20 ampdcoraccurent range.

5.AC/DC Switch. Selectsacor dcin voltage

and

currentfimctions.

Engage

switch(setto "in" position) for ac;disengage

(setto',ouf'

position)for dc.

6. V Switch. Selectsvoltage

fi.rnction.

7. A (amp) Switch. Selects

currentfirnction.

8. )F ) O Switch. Selectsdiode test finction, resistance

firnctions,andcontinuitytestfi.mction.

Whenboth200 O and2 K

resistance fi.nction are selected, this switch enables audible

continuity test. Continuity tone is enabled when switches are

engaged.

g. 2MmY/200pN200CU +f r)) Switch. Selecrs200mV

rangefor acldc voltagefunctions, 200pA rangefor acldc

currentfunctions,and200 C)rangefor resistance

function.

Enables

continuity

testinconjunction

withswitch

(8)and

(10).

rc.zVnmA KCy iF Switctr. Selects

2V rangeforacldc

voltage

finctions. 2 mA range

for acldccurrent

fi.urctions,and2 Kf) range

for resistance

firnction.

Also selectsdiodetest

( tF ) function.

ll .20 Vn0 mA/20 I(O Switch. Selects20V rangefor ac,/dc

I voltagefinctions. 20mA rangefor ac,/dc

currentfimctions,

and

20K,f2range

forresistance

function.

12.200VD00 mAn00 KC)Switch. Selects200V rangeforac/dc

voltagefunctions.

200mA rangefor addc ctnrent

finctions,

and

200Kf) rangeforresistance

function.

13.

1200VDC/1000

VAC2000 mA/2000

KQ Switch. Selects

1200

V range

for dcvoltage

function,1000

V rangefor acvoltage

firnctiorl 2000mAQ A) rangefor acldccurrent

fi-rnctions,

and

2000Kf) (2 Mf)) rangeforresistance

function.

4.20 AnI MQ Switch. Selects20A range

for acldccurrent

fi.mc-

tions.Usedin co4junction

with 20Ajack (a).Also selects

20MC)

range

for resistance

frmction

15.POWER Switch. Tumsinstument ON and

OFF.Power-onind-

icated

by presence

ofcharacters

ondisplay.

16 Display. 3-ln dlgtLED displaywifh automatic

decimal

point

and

mimrsC) sigr. Indicatesto 1999

counts.

Overrange

indicated

by a"1" displayed

atthelefonostdigit while all other

digitsrernain

blank

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