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

8024B
OPERATOR CONVENIENCE:
3 1/2-digit liquid crystal display: A high contrast display that can be easily read
from across the room. No more worries about bent needles, parallax, etc.
Long term calibration stability: 2 years. Easy calibration - few adjustments.
Lightweight: .482 kg (17 ounces).
Safety Designed Test Leads: Finger guards on the probe and shrouded contacts on
connectors reduce the chance of accidental contact with circuit voltages.
POWER:
Up to 100 hours of continuous operation can be expected from a single,
inexpensive, 9-volt, alkaline battery (transistor radio/ calculator type).
Low battery voltage is automatically detected and displayed. The low battery
indication, BT, appears in the display when about 10 hours of operation remain.
Line operation is possible using a Model A8! Battery Eliminator. (See Section 6.)
ACCESSORIES:
1-3.
1-4.
A full line of accessories are available to extend the range and scope of your
instrument. They are listed in Table I-1 and described in detail in Section 6.
SPECIFICATIONS
Table 1-2 lists the specifications of your 8024B.
Table 1-1. 8024B Accessories
MODEL NO. DESCRIPTION
1-2
C90 Deluxe Carrying Case (Soft Vinyl)
Y8105 Rugged Carrying Case (Molded Plastic)
Y8102 Type K Sheathed Thermocouple
Y8103 Type K Beaded Wire Thermocouple
Y8104 Thermocouple Termination Kit
80T-150C Temperature Probe °C
80T-150F Temperature Probe °F
80K-6 High Voltage Probe
80K-40 High Voltage Probe
83RF High Frequency Probe
85RF High Frequency Probe

8024B
Table
1-1.
8024B
Accessories
(cont)
DESCRIPTION
Current
Transformer,
2”
jaw
opening
801-600
80J-10
Current
Shunt
A81
Battery
Eliminator
Y8100
AC/DC
Current
Probe
Y8101
Current
Transformer
7/16"
jaw
opening
Y8132
Safety
Designed
Test
Lead
Set
Y8134
Deluxe
Test
Lead
Set
Y8140
Slim
Flex
Test
Lead
Set
Table
1-2.
8024B
Specifications
The
following
electrical
specifications
assume
a
2-year
calibration
cycle
and
an
operating
temperature
of
18°C
to
28°
C
(64°
F
to
82°
F)
at
relative
humidity
up
to
90%
unless
otherwise
noted.
FUNCTIONS:
DC
Volts,
AC
Volts,
DC
Current,
AC
Current,
Resistance,
Diode
Test,
Conductance,
Temperature,
Peak-Hold,
Continuity,
and
Level
Detection.
DC VOLTS
RESOLUTION
ACCURACY
FOR
2
YEARS
+200 mV
+2V
+20V
+200V
+1000V
+(0.1%
of
reading
+
1
digit)
Response
Time
......-.-----
Less
than
1
sec.
Overvoltage
Protection......
14000V
dc
or
peak
ac
on
all
ranges,
except
200
mv
(15
sec
max
above
300V
dc
or
rms)
Input
Impedance
........
_..
10MQ,
all
ranges
Normal
Mode
Rejection
Ratio
>
60
dB
at
50
Hz
and
60
Hz
Common
Mode
Rejection
Ratio
(1
k§2
unbalance)
.....
>
100
dB
at
de,
50Hz
and
60
Hz

8024B
Table 1-2. 8024B Specifications (cont)
AC VOLTS (Average Sensing, RMS Calibrated Sinewave):
RANGE |RESOLUTION BECEAAY
45 Hz to 1 kHz | 1 kHz to 2 KHz | 2 kHz to 5 kHz
200 mV 100 UV
+(0.75% +(1.5% of +(5% of
750V 1V +(1% of Not Not
reading +2 Specified Specified
digits)
Response Time............. Less than 2 seconds
Overload Protection ........ 750V rms or 1000V peak continuous, except
200 mV ac ranges (15 seconds maximum
above 300V rms).
Common Mode Rejection
Ratio (1 kQQunbalance) ..... >60 dB at 50 Hz and 60 Hz
Volt-Hz Product ............ 10’ max (200V at 50 kHz)
Input Impedance ........... 10 MQ in parallel with <C 100 pF
DC CURRENT
ACCURACY BURDEN
RANGE RESOLUTION
10UA 0.25V max
200 mA 100WLA
Response Time............. Less than 1 second
+(0.75% of
reading +1
digit)
Overload Protection ........ 2A/250V fuse in series with 3A/600V fuse.
1-4

8024B
Table
1-2.
8024B
Specifications
(cont)
AC
CURRENT
ACCURACY
for
2
Years
RANGE
RESOLUTION
45
Hz
to
450
Hz
to
450
Hz
1
kHz
2mA
1
WA
+(3%
of
Not
ified
Secu
0.25V
rms
max
reading
+2
digits)
Pama
[HA
+(1.5%
of
reading
+2
Response
Time
......------:
Less
than
2
seconds
BURDEN
VOLTAGE
Overload
Protection
.....-.--
2A/250V
fuse
in
series
with
3A/600V
fuse.
RESISTANCE
RANGE|
RESOLUTION
MAXIMUM
TEST
CURRENT
+(0.2%
of
reading
+3
digits)
<0.25V
35
mA
+(0.1% of
reading
+1
ACCURACY
FOR
2
YEARS
FULL-SCALE
VOLTAGE
sa
aPatiesears
500V
dc/ac
rms
on
all
ranges
(15
sec
max
above
300V
dc
or
rms
ac)
Open
Circuit
Voltage....-.--
Less
than
1.5V
on
all
ranges
except
2
kQ
range
is
less
than
3.5V.
Diode
Test
......-----+-
+03
The
three
ranges—2
kQ,
200
k&2,
20
MQ’—
have
enough
open
circuit
voltage
to
turnon
silicon
junctions
allowing
a
diode
test.
The
9
kQ,
range
is
preferred
andis
marked
with
a
diode
symbol.
The
three
non-diode
test
ranges
—
20092,
20
k&2,
and
2000
kQ—will
not
turn
on
silicon
junctions
when
making
in-circuit
resistance
measurements.
1-5

8024B
Table 1-2. 8024B Specifications (cont)
CONDUCTANCE*
Equivalent Resistance
5MQ2 to 10,000 MQ
Accuracy +(2.0% of reading + 10 digits)
Resolution 0.05% of range (10°'°S)
Overload Protection 500V dc/rms ac (15 sec max above 300V dc
or rms ac)
Diode Test Will forward bias a typical PN junction
*Conductance is the inverse of ohms (1/{2) and is expressed in siemens (S).
A decrease in conductance is equivalent to an increase in resistance.
PEAK HOLD Use for Measuring Transient Signals
AC or DC, VOLTS or CURRENT
FUNCTIONS, RANGES ALL RANGES
AC
Accuracy 3% of reading + 10 digits, all ranges
(48 — 450 Hz) (except 2 mA, 6% of reading + 10 digits).
Average sensing, calibrated to read
highest rms value of sine wave.
Acquisition Time 150 ms**
DC
Accuracy 3% of reading + 10 digits, positive pulses
Acquisition Time 10 ms** square pulse
(3 ms square or 8 ms half sine typ.
Display Decay Rate <1 digit/sec
“Acquisition Time is the minimum duration of peak or surge for rated
accuracy.
Accuracy improves for longer peak duration.
TEMPERATURE (Thermocouple accessory required)
K-Type Thermocouple (Chromel-Alumel)
See accessories
Range -20° C to +1265° C
1-6
Temperature Sensor

8024B
Table
1-2.
8024B
Specifications
(cont)
+3°C
+1
digit,
-20°
to
+300°C
3%
of
reading,
+300°
C
to
+1265°
Cc
(Accuracy
includes
NBS
conformity,
calibration
stability,
zero,
and
reference
junction
but
not
thermocouple
errors.)
Dual!
banana
isothermal
termination
pro-
vided
with
FLUKE
thermocouple
acces-
sories.
Use
Y8104
termination
accessory
for
any
K-Type
thermocouple.
2
A/250V
fuse
in
series
with
3A/600V
fuse.
CONTINUITY
Use
for
Passive
Circuit
Testing”
All
Resistance
and
Conductance
ranges
Open
Circuit:
“
A”
Display
Continuity:
“
W
”
Display
+
2
kHz
audio
tone
(selectable)
Accuracy
Connection
Overload
Protection
Ranges
indication
50
mS
(Minimum
duration
of
continuity
or
open
to
toggle
display
or
audio
tone.
Pulse
stretcher
holds
display
and
tone
for
approx.
100
ms.)
500V
dc
or
rms
ac
all
ranges
(15
sec
max
above
300V
dc
or
rms
ac)
*See
section
2
for
additional
information.
Response Time
(2 kQ2 range)
Overload
Protection
LEVEL
DETECTOR
Use
for
Active
Circuit
Testing
+0.8V
de
nominal
on
200
k&2
range
7
”
for
inputs
greater
than
reference
“
=
”
for
inputs
less
than
reference
«
&*
for
inputs
toggling
above
and
WV
below
reference
Reference
Level
Display
Audio
tone
coincident
with
“
Ww”
(switch
selectable)

8024B
Table 1-2. 8024B Specifications (cont)
Pulse Response
(200 kQ2 range)
Input Impedance
Overload Protection
ENVIRONMENTAL
Temperature
OPERATING
STORAGE
Relative Humidity
Temperature
Coefficient
GENERAL:
Protection Class 2
Maximum Common Mode
‘Voltage
Power Requirements
BATTERY LIFE
1-8
50 US (Minimum width of 0 to +3V
pulse required to toggle display. Pulse
stretcher holds display for approx. 100
ms when short pulses are detected.)
>100 kQ in parallel with <c100 pF
S00V dc or rms ac (15 sec max above 300V
dc or rms ac)
0°C to 50°C (32°F to 122° F)
-35 to +60°C
0 to 90% from 0°C to 35°C except 0 to 80%
from 0°C to 35°C on 2MQ, 20MQ, and
200 nS ranges; 0 to 70% from 35° C to
50°C
<0.1 times the applicable accuracy speci-
fication per °C for 0° C to 18°C and 28° C to
50° C (32° F to 64.4° F and 82.4° F to 122° F),
except temperature (<00.02 X accuracy
per °C)
(Relates solely to insulation or grounding
properties defined in IEC 348)
500V dc orrms
Single 9V battery, NEDA 1604
Alkaline: 100 hours typical
Zinc carbon: 50 hours typical
“BT” in display illuminates when approxi-
mately 20% of life remains
32 digit LCD (1,999 count), autozero, auto-
polarity
LxWxH: 18.0cmx86cmx4.5cm
(7.1 in x 3.4in x 1.8 in)
.48 Kg, (17 02)

8024B
Section
2
Operating
Instructions
2-1.
INTRODUCTION
2-2.
To
fully
utilize
the
measurement
capabilities
of
your
8024B,
a
basic
understanding
of
its
measurement
techniques
and
limitations
is
required.
This
section
of
the
manual
provides
that
information.
2-3.
PREPARING
FOR
OPERATION
2-4.
Unpacking
2-5.
Your
8024B,
this
manual,
one
QV
battery,
and
two
test
leads
(one
red
and
one
black)
were
shipped
to
you
in
a
specially
designed
container.
Check
the
shipment
carefully
and
contact
the
place
of
purchase
immediately
if
anything
is
wrong.
If
the
place
of
purchase
fails
to
satisfy
you,
contact
the
nearest
John
Fluke
Service
Center.
A
list
of
these
service
centers
is
located
at
the
end
of
this
manual.
2-6.
If
reshipment
is
necessary,
please
use
the
original
shipping
container.
If
the
original
container
is
not
available,
a
new
one
can
be
obtained
from
the
John
Fluke
Mfg.
Co.,
Inc.
Please
state
the
instrument
model
number
when
requesting
a
new
shipping
container.
2-7.
Battery
or
Fuse
installation/Replacement
2-8.
Your
8024B
is
designed
to
operate
on
a
single,
inexpensive,
9V
battery
of
the
transistor
radio/calculator
variety
(NEDA
1604).
When
you
receive
your
8024B,
the
battery
will
not
be
installed
in
the
DMM.
Once
the
battery
is
installed,
you
can
expecta
typical
operating
life
of
up
to
100
hours
with
an
alkaline
battery
or
50
hours
with
a
carbon-
zinc
battery.
When
the
battery
has
exhausted
about
80%
of
its
useful
life
the
BT
indicator
will
appear
in
the
upper
left
corner
of
the
display.
Your
8024B
will
operate
properly
for
at
least
10
hours
on
an
alkaline
battery
after
BT
appears
in
the
display.
Use
the
following
procedure
to
install
or
replace
the
battery
or
fuse:
CAUTION
To
ensure
operation
within
the
accuracy
specifications,
the
battery
should
be
replaced
when
the
voltage
measured
at
the
center
of
the
battery
eliminator
connector
falls
below
-3.00
volts
(with
respect
to
the
COMMON
input).
If
the
2-1

8024B
battery voltage falls to a point where the ‘BT‘ is displayed and the digital display
is inactive or no longer responds to a signal input, the battery should. be
replaced immediately to prevent damage to the LCD.
WARNING
TO AVOID ELECTRICAL SHOCK, BATTERY OR FUSE REPLACEMENT
SHOULD ONLY BE PERFORMED AFTER THE INPUT SIGNAL AND TEST
LEADS HAVE BEEN REMOVED FROM THE INPUT TERMINALS AND THE
POWER SWITCH HAS BEEN SET TO OFF.
1. Set the 8024B POWER switch to OFF.
2. Remove test leads from external circuit connections and from the 8024B input
terminals.
3. Open the battery compartment on the bottom of the 8024B as shown in
Figure 2-1.
Figure 2-1. Removing the Battery Cover
2-2

8024B
4.
Tilt
the
battery
out
as
shown
in
Figure
2-2.
5.
If
fuse
FI
is
to
be
replaced,
use
a
pointed
tool,
such
as
a
probe
tip
or
small
screwdriver
to
pry
FI
from
its
holder.
Replace
the
defective
fuse
with
type
AGX2.
(Instruments
that
accommodate
metric
fuses
use
type
171100-2.)
6.
Carefully
pull
the
battery
clip
free
from
the
battery
terminals
as
shown
in
Figure
2-2.
7.
Press
the
battery
clip
onto
the
replacement
battery
and
return
both
to
the
battery
compartment.
8.
Make
sure
the
battery
leads
are
routed
to
the
side
of
the
battery
and
are
completely
within
the
confines
of
the
battery
compartment
before
sliding
the
cover
into place.
WARNING
DO
NOT
OPERATE
THE
8024B
UNTIL
THE
BATTERY
COVER
IS
IN
PLACE
AND
FULLY
CLOSED.
Figure
2-2.
Battery
Removal
2-9.
PHYSICAL
FEATURES
2-10.
Before
you
try
to
use
your
8024B,
we
suggest
you
take
a
few
minutes
to
get
acquainted
with
your
instrument.
All
of
the
externally
accessible
physical
features
of
your
8024B
are
shown
in
Figure
2-3
and
described
in
Table
2-1.
Locate
each
feature
on
your
8024B
as
you
read
the
description.
2-3