Fluke 8024B User manual

NOTE
This
manual
documents
the
Model
8024B
and
its
assemblies
at
the
revision
levels
-
ghown
in
Appendix
A.
If
your
instrument
contains
assemblies
with
different
revision
letters,
it
will
be
necessary
for
you
to
either
update
or
backdate
this
manual.
Refer
to
the
supplemental
change/errata
sheet
for
newer
assemblies,
or
the
backdating
sheet
in
Appendix
A
for
older
assemblies.
8024B
Digital
Multimeter
Instruction
Manual
P/N 616052
July
1981
FLUKE
©1981,
John
Fluke
Mfg.
Co.,
Inc.,
all
rights
reserved
Litho
in
U.S.A.

Dear Customer:
Congratulations!
We
at
Fluke
are
proud
to
present
you
with
the
Model
8024B
Multimeter.
This
instrument
represents
the
very
latest
in
integrated
circuit
and
display
technology.
As
a result,
the
end
product
is
a rugged
and
reliable
instrument
whose
performance
and
design
exhibit
the
qualities
of
a finely
engineered
lab instrument.
To
fully
appreciate
and
protect
your
investment,
we
suggest
you
take
a
few
moments
to
read
the
manual.
As
always,
Fluke stands
behind
your
8024B
witha
full
2-year
warranty
and
a
worldwide
service
organization.
If
the
need
arises,
please don’t
hesitate
to
call
on us.
Thank you for your trust and confidence.
Fohn Fluke Mfg. Co., Inc.

SECTION
1
8024B
Table
of
Contents
TITLE
PAGE
INTRODUCTION
AND
SPECIFICATIONS
.......--------
1-1
I-].
INTRODUCTION
....----eeeeeee
ere
er
rtersrese
1-1
1-3.
SPECIFICATIONS
....-cceeeeereeer
seer
errrtces
1-1
OPERATING
INSTRUCTIONS
.......-----sser
rrr
2-1
9-1.
INTRODUCTION
.....--eeeeeere
reer
ester
terete
2-4
2-3.
PREPARING
FOR
OPERATION
....--ee
eee
ee
teee
2-1
2-4.
Linpacking
ustiics
stor
ta
ee
etenen
eter
en
st
2-1
2-7.
Battery
or
Fuse
Installation/
Replacement
....----+-->
2-1
9-9,
PHYSICAL
FEATURES.....-.:+seserererrrrrcees
2-3
9-11,
OPERATING
NOTES
....-.--eeerererrs
er
serccses
2-6
2-13.
Input
Overload
Protection
....-++++e+rerrrrrrttte
2-6
2-15.
Input
Connection
to
COMMON
.....--e
ee
errr
2-6
2-17.
Fuse
Cheek.
ov
ccuce
wackans
seen cass
Spies
nice
as
cies
2-7
2-19,
Fuse
Replacement
....-.+-+eesereersrrtressests
2-7
2-21.
The
Displayenciqcra
ve
vane
sits
hatee
det
ete
tee
2-8
596
OPERATION
cas
u
cists
se
ee
cesarean
enti
e
ee
sere
se
2-9
2-28.
AC/DC
Volts
(V)
Operation
...-+e
eee
ee
reece
eres
2-9
2-30.
AC/DC
Current
(mA)
Operation
.....--ee
eer
eeeeee
2-9
2-32.
Resistance
({(2)
Operation.
....--.eeeeeeeereertes
2-9
2-34.
Continuity
Testing
........-+eee
reece
er
eres
rst
2-13
2-36.
Diode:
Testing
cvs
Sacneven
tans
oo
tose
erent
ee
2-13
2-38.
Conductance
(S)
Operation
....-+-seeee
reer
reste
2-13
2-40.
Temperature
(°C)
Operation
«0...
essere
ee
eee
eee
2-13
2-43.
Level
Detector
Operation
....-----
errs
eee
crerees
2-16
2-45.
Peak
Hold
Operation
....---.e+eeeereeeerterteess
2-17
9-47.
INITIAL
CHECK-OUT
PROCEDURE
......---++-++:
2-19
2-49.
MEASUREMENT
TECHNIQUES
.....--.-
eee
reer
2-21
2-54.
Temperature
Conversion.
...+-+++eerrrrrrerrrtertt
2-21
2-53.
Conductance-to-Resistance
Conversion
...-+++++++++
2-24
2-55.
AC
Measurements
.....---0e
eee
c
eer
esrt
es
trrsst
2-24
2-57.
AC/DC/
Voltage
Measurements
..-.--+-+++seerrees
2-24
2-60.
AC/DC
Current
Measurements.
...-+-++-+seser00ts
2-24
i
(continued
on
page
it)

8024B
TABLE OF CONTENTS, continued
SECTION
TITLE PAGE
2-64. Resistance Measurements ............00 cece eeeeees 2-27
2-67. APPLICATIONS ......... 0.0.22 c cece nee ee eees 2-29
2-69. THERMOCOUPLES ............ 0.00 cee eee eens 2-29
2-70. Introduction ....... 0.06 cece eee eee eee eee eens 2-29
2-73.
Monitoring
More
Than
One
Thermocouple
..........
2-31
2-75. Leakage Tester ........ cece ccc eee eee eens 2-31
THEORY OF OPERATION .............. 0.00 cece eee eens 4-1
3-1. INTRODUCTION ........... 2. cee eee eee ee eens 3-1
3-3. OVERALL FUNCTIONAL DESCRIPTION ......... 3-1
3-5. Ad DD CONVErte res athena wb deck vee ede Sedat 3-1
3-14. Voltage Measurement Function..............00000- 3-6
3-16. Current Measurement Function.................04. 3-6
3-18. Temperature (°C) Measurement Function........... 3-6
3-20. Resistance Measurement Function ...............4. 3-6
3-23. Conductance Measurement Function ............... 3-11
3-25. Peak Hold Circuit Level .......... 0.0.0 cece eee eee 3-11
3-27. Level Detector Circuit .......... 0.2 eee eee eee eee 3-11
MAINTENANCE ................ 02. eee e ee eee eee eee tees 3-1
4-1. INTRODUCTION ........ 0.0.0... cece tees 4-|
4-3. SERVICE INFORMATION ...........--0.2.20 2 eee 4-1
4-7. GENERAL INFORMATION ............... eee eee 4-3
4-8. Access Information.............c ee eee eee ee eee eeee 4-3
4-17. (20195 0) area ee a a eee 4-5
4-19. Battery/ Backup Fuse Replacement ................. 4-6
4-21. PERFORMANCE TEST .............. eee ee eee eens 4-6
4-23. Initial Procedure ...... 0.0... ccc eee e eee eee nee 4-6
4-25. DIS Bla V7 LOSE sccteecbor cele Wo tbeck alerted ua ad at acm Bi Be 4-7
4-27. Voltage: PeSt ois iiie oti ei Sealer eee SLSR wiles 4-8
4-29. Currént:- Test..5 cceede cee eed cod Gea Sa eek 4-8
4-31. Resistance/Conductance Test ............... 00s e eee 4-8
4-33. Peak“ HOldiT C8) iscsi ese seed o Miasietaw wie edie es 4-1]
4-35. Continuity Test. 4.0.02 68 ee he Soke ene eee 4-1]
4-37. Level Detector Test............ 0. cc eee e ce eee eee 4-12
4-39. Bi eStic stereos ue ne oo bate a elk ee agatareca oveoelaat alate 4-12
4-41. Température Test co. seas cde bee selis cere ike eee 4-14
4-43. CALIBRATION ADJUSTMENTS ..............000- 4-14
4-46. TROUBLESHOOTING .............0- 200.2 e eee eee 4-15
LIST OF REPLACEABLE PARTS........................ 5-1
5-1. INTRODUCTION ........... 0... eee eee ee eee ees 5-1
5-4. HOW TO OBTAIN PARTS ........... 220-0 e eee ees 5-2
i (continued on page iii)

TABLE
OF
CONTENTS,
continued
SECTION
TITLE
ACCESSORIES
INFORMATION
6-1.
INTRODUCTION
....----eeeee
seers
eer
terres
6-3.
DELUXE
CARRYING
CASE
(C90)...
+++
esse
errr
6-5.
RUGGED
CARRYING
CASE
(YS
10S):
tees
ee
eeaees
6-7.
TYPE
K
SHEATHED
THERMOCOUPLE(Y8102)
..-
6-8.
Introduction
6-10.
Specifications
.....-6.
ee
eee
ere
eeer eter
este
t
tee
6-11.
TYPE
K
BEAD
THERMOCOUPLE
(Y8103)
6-12.
Introduction
........eccee
ence
e
ee
eette
ree
eaeree
6-14.
SpecilicdlOns-iaenhecisss
ct
ve
lesson
seta
teens?
6-15.
THERMOCOUPLE
TERMINATION
(Y8104)
....----
6-17.
TEMPERATURE
PROBES
(80T-150C
and
80T-I50F)
.
6-18.
THiTOAUCH
ON
ga
psdan
rane
ree
A
Hae
eT
Se
EE
6-20.
Specifications
...-eseerecererer
resets
6-21.
HIGH
VOLTAGE
PROBE
(80K-6)
.---
+e
esee
errr
6-22.
LAthOduCHON.<j.cceenn
eee
seeker
eNO
A
yess
*
6-24.
Specifications
...----eereerereree
rss
6-25.
HIGH
VOLTAGE
PROBE
(80K-40)
.----
sees
eerceee
6-26.
(AtHIICHON.
<aewte
nhs
eeRNea
er
eee
ees
6-28.
Specifications
..-----eeereecssereesee
6-29.
HIGH
FREQUENCY
PROBE
(83RF)
.---+
seer
eeerte
6-30.
IntrOduclOl
<i
aetdesta
tree
cea
eep
eer
Ts
ates:
6-32.
Specifications
..----+eereerssreesss
6-33.
HIGH
FREQUENCY
PROBE
(85RF)
.---
seer
errett
6-34.
PntrodUelOh
sy
.hhawa
aes
wen
Keene
ere
eer
eee!
6-36.
Specifications
Cugehe
Sian
DALE
RT
RRS
ORS
Se
Ee
RIES
6-37.
CURRENT
TRANSFORMER
(801-600)
.-
+--+
+++000>
6-38.
[GirOdUCON.
china
essere
ane
Pattee
Mer
eN
rE
6-40.
Specifications
..---+-eeeceeecr
eres
6-41.
CURRENT
SHUNT
(803-10)
cateker
er
etenmie
eee
ae*
6-42.
IntrOdUCtiON
Hac
den
wR
Dad
cmeeee
nea
east
tees.
6-44.
Specifications
...--+++rreeerereressereee
se
6-45.
BATTERY
ELIMINATOR
(A81)
.----e
errr
tre
6-47.
AC/DC
CURRENT
PROBE
(Y8100)
«0...
esse
errr
6-48.
Tntroduction
sacs
saci
ets
pee
eee
TET
6-50.
Specifications...
nie.seenn
Pe
iriasten
enter
eS
6-51.
AC
CURRENT
TRANSFORMER
(Y8101)..---++-++>
6-52.
WntroduchiOtna2
sacar
meee
sees
eee
Meme”
6-54.
Gpecifications:<icve4c4
siewron
teen
tts
Bee
6-55.
SAFETY
DESIGNED
TEST
LEAD
SET
(Y8132)
..---
6-57.
DELUXETEST
LEAD
SET
(Y8134)
.----
essere
terres
6-59,
SLIM
FLEX
TEST
LEAD
SET
(Y8140)..----+--ree0+
SCHEMATIC
DIAGRAMS......-------s
sot
MANUAL
CHANGE
AND
BACKDATING
INFORMATION
:
ili
8024B

8024B
List of Tables
TABLE
1-1.
1-2.
2-1.
2-2.
2-3.
2-4.
4-1.
4-2.
4-3.
4-4.
4-5.
4-6.
5-1.
5-2.
5-3.
5-4.
TITLE PAGE
SOZ4B A CCESSOTIES: «02. 4 Sani Sts Mucha eNO oka ee RE 1-2
SO24B Specifications: «ces dita kics Cee ning cece eG See eos 1-3
Controls, Indicators, and Connectors ........-..2ceeceeceees 2-4
Input-Overlodd Lanits v:2c 236-054 Hada6G.44 tee aetiar dows os 2-7
Centigrade-to-Farenheit Conversion Scale.............0.005. 2-22
Voltage/ Current Capability of Resistance Ranges ............ 2-29
‘Test Bqipment .Reguited 2i0.20.25 5 Casas n toe navaaneea’ 4-2
Byisplay DES ce iran cp oxen gree alas o detcsaoese a ea the nae nia need Sans 4-7
Volta pe chest nqnertalvawatuse sos costae ee aaa taaees 4-9
Current Fests .wah Casein heiwa eae an kee ee ahaa oees 4-10
Resistance/Conductance Test ......... 0c cece e eee eevee 4-1]
Troubleshooting Guide oc.c..venses whee ak tl sceveeaewae es 4-17
S024 B Pinal Assembly eeu ad gx Yn woe ha eaeee a soda vps VOR 5-3
Al Case ASsemOly venient eet esas of ateg us aaa ence 5-6
A? Maint PCB-ASSEMDIY 5.0 ouac cle dasetaseesaa wake ora ss 5-8
AS Switch PCB Assembly cys accion eaaie ee eae eve eae ees 5-12
Federal Supply Codes for Manufacturers...............0000. 5-15

8024B
List
of
Illustrations
FIGURE
TITLE
PAGE
2-1.
Removing
the
Battery
Cover
...-.--eeeereerrserrrssrrssets
2-2
2-2.
Battery
Removal
.......-eeeceeee
cece
eerste
rte
er
seers
ss
2-3
2-3.
Controls,
Indicators,
and
Connectors
.....
cece
eee
eee
renee
2-4
2-4.
Display
cake
via
goa
werie
Waser
atic
Salen
eesti
2-8
2-5.
Abnormal
Status
Indicators
......-++seeereeretetrrsrttte
2-9
2-6.
Volts
Operation
......-.
sere
eee
e
seers
rete
sree
sce
2-10
2-7.
Current
Operation
......-.
sees
reece
ener
renter
rere
r
reese
2-11
2-8.
Resistance
Operation.
.....
+s.
ee
cere rece
sersr erste
esses
ess
2-12
2-9.
Conductance
Operation
......--+eeeereeeerrer
ress
sestes
2-14
2-10.
Temperature
Operation.....+--ss+eerererterrtee
srs
sss
2-15
2-11.
Level
Detector
Operation
......-.eceereereresrtsresescrees
2-17
2-12.
Peak
Hold
Operation
....--.+-seceerecerectsere
terest
2-18
2-13.
Temperature
Correction
Factor
For
K-Type
Thermocouples.....--e+eeeeseecererserser
essen
esses
2-21
2-14.
Conductance-to-Resistance
Conversion
..-+++++erreerrrrerrs
2-25
2-15.
Waveform
Conversion........eceeeeerecsreertreseserrr
ees
2-26
2-16.
Voltage
Measurement
Error
Calculations
......eeee
ee
eee
ees
2-27
2-17.
Current
Measurement
Calculations......++++++sssrererrrees
2-28
2-18.
Thermocouples.......ssseeecererereceeser
tenes
sree
eee
2-30
2-19.
Thermocouple
Termination
Unit
....-.-++++srerrrrrserscees
2-32
2-20.
Multipoint
Selection
.....----s+esereerererese
rer
s
setts
2-32
3-1.
8024B
Block
Diagram......-+seeeeereer
err
trrsrssrersses
3-2
3-2.
A/D
Converter
Functional
Diagram
.....-.esee
eee
e
ee
eeeee
3-4
3-3.
Integrate
Capacitor
Waveform....-.+-++s+rrrrrerr
rr
tsts
ets
3-5
3-4.
Voltage
Measurement
.....--.eeseeseeererr
essere
senses
3-7
3-5.
Current
Measurement
.......--eeeeerer
re
ersrer
rst
errrts
3-8
3-6.
Temperature
Measurement.....-++--eeerrerresreresrestes
3-9
3-7.
Resistance/Conductance
Measurement
..---+-+++e+srrrrrees
3-10
3-8.
Simplified
Peak
Hold
Circuit
.......+++eeseerrerrerrssssces
3-12
320:
Simplified
Level
Detector
Circuit
2.0.0...
e
eee
ee
eee
eters
3-13
4-1.
Calibration
Adjustments
Location
...-.-++++++rerererttctes
4-3
4-2.
LCD
Display
Assembly......----seceeeererrtcrrss
rts
4-5
v
(continued
on
page
Vili)

8024B
LIST OF ILLUSTRATIONS, continued
FIGURE TITLE PAGE
4-3.
General
Equipment
Connection................00cceeeeeeee
4-7
4-4.
General
Equipment
Connection
—
Current...............00.
4-10
4-5.
BD
St
a
cage
ntaedaesstei
arp
I
el
ae
ek
Mes
ee
ee
Oe
DOSS
4-13
4-6.
Lae:
Bathe.
e4
ore
skeen
a
84
oe
he
ee
ee
eae
eats
Dae
wdeh
4-16
5-1. S024B Pinal Assembly. otis ap audud pac Anaw See eteiercaees Mose 5-4
5-2. Al Case Assembly) «0 ncux.3. c4-0:h line ww eeee eee BA dene etd Shoe oe Son 5-7
5-3.
Az
Main.
PCBR-Assembly).\.scc
veo
pwede
«ee.
uaae
nee
een
sages:
5-11
5-4.
AS
Switch
PCB.
Assembly
sé
ocni
esas
god
des
yea
enna
os
aeons
5-12
6-1. BO24B ACCESSOTIES » 066 ccc cece ee eee ee aac asccceacevees 6-2
Vi

8024B
Section 1
Introduction
&
Specifications
1-1.
INTRODUCTION
1-2.
Your
John
Fluke
Model
8024B
is
a
pocket-size
digital
multimeter
that
is
ideally
suited
for
application
in
the
field,
laboratory,
shop,
or
home.
Some
of
the
features
of
your
instrument
are:
FUNCTIONS:
All
standard
VOM
measurement
functions
--
ac/dc
voltage,
ac/dc
current,
resistance
--
plus:
Conductance:
A
new
multimeter
function
that
allows
fast,
accurate,
noise-free
resistance
measurements
up
to
10,000
MQ.
Temperature:
Used
with
a
K-type
thermocouple,
this
function
provides
direct
display
in
degrees
Celsius
for
K-type
thermocouples.
Peak-Hold:
Provides
short-term
memory
for
capturing
the
peak
value
of
transient
ac or
dc
signals
such
as
motor
starting
current.
Continuity:
Provides
an
immediate
visual
and
audible
indication
when
continuity
is
detected
(use
for
passive
circuit
testing).
Level
Detector:
Senses
logic
levels
and
other
active
signals
less
than
250V
dc
or
ac
rms.
Visual
and
audible
indications
of
the
results
are
provided.
RANGE
for
each
function
has:
Full
autopolarity
Overrange
indication
Effective
protection
from
overloads
Dual
slope
integration
measurement
technique
to
ensure
noise-free
measurements
1-1