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Series III Multimeter
Instruction Sheet
W
Read First: Safety Information
• Never use the meter if the meter or test leads look damaged.
• Be sure the test leads and switch are in the correct position
for the desired measurement.
• Never measure resistance in a circuit when power is applied.
• Never touch the probe to a voltage source when the test
leads are plugged into the 10 A or 40 mA input jack.
• Never apply more than rated voltage between any input jack
and earth ground.
• Be careful when working with voltages above 60 V dc or 30
V ac rms. Such voltages pose a shock hazard.
• Keep your fingers behind the finger guards on the test
probes when making measurements.
WWarning
To avoid false readings, which could lead to
possible electric shock or personal injury, replace
the battery as soon as the battery indicator M
appears.
®
Symbols
W
Y
T
Overvoltage Installation Category per IEC 1010:
CAT II
CAT III
PN 687589 August 1997 Rev. 2, 4/98
1997, 1998 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
Read First: Safety Information
Dangerous Voltage May Be Present
Double Insulation
Typical locations include main wall outlets, local
appliances, and portable equipment.
Typical locations include switches in the fixed
installation and equipment for industrial use
permanently connected to the fixed installation.
Input Jacks
Milliamp
Amp
FUSED
600V
1000V
CAT
CAT
V
Volts, Ohms,
Diode Test
Common Terminal
See Specifications for overload protection.
Ranging
The meter defaults to autorange when you turn on the meter.
Manual ranging is available in V ac, V dc, Hz, ohms,
capacitance, A ac, and A dc.
MANUAL
RANGE
Momentary
MANUAL
RANGE
CAT
CAT
+
_
jo1f.eps
jo11f.eps
To return to autorange, press for 1 second or turn the
rotary switch.
Bar Graph
The bar graph shows readings relative to the full scale value of
the displayed measurement range and indicates polarity.
0 2001 400 2 600 3800 41000
+
_
mV
jo19f.eps
Automatic Touch Hold
Mode
W Warning
To avoid electric shock, do not use the Touch
Hold
mode to determine if a circuit with high
voltage is dead. The Touch Hold
capture unstable or noisy readings.
The Touch Hold mode automatically captures and displays a
stable voltage reading.
mode will not
HOLD
HOLD
HOLD
RANGE
HOLD HOLD
RANGE
RANGE
V V V
CAT
+
__
CAT
CAT
+
CAT
CAT
+
_
Single Beep
jo4f.eps
When the meter detects a new input, it beeps and displays a new
reading.
Stray voltages can cause the meter to display a new reading.
To exit the Touch Hold
mode, press the yellow key a second
time or turn the rotary switch.
Smoothing Displayed Readings
Smoothing displays the average of eight readings. When the
input signal changes rapidly, smoothing makes the digital display
readings more stable. Smoothing does not work in continuity, LoOhms, and capacitance.
To select Smoothing, press the yellow key while turning on the
meter.
Standby
If the meter is on but is inactive for an hour (20 minutes in diode
test), the screen only displays four bar graph segments. To
resume operation, turn the rotary switch or press a button.
AC and DC Voltage
Volts AC
RANGE
V
CAT
+
__
(K L mL)
Volts DC
RANGE
V
+
Millivolts DC
RANGE
mV
CAT
CAT
+
CAT
CAT
_
jo3f.eps
In the mV dc function, the meter defaults to 400 mV. To enter the
40 mV range, press
Frequency
(Hz)
momentarily.
The bar graph indicates the ac voltage present.
W Warning
To avoid electric shock, disregard the bar graph
when frequency is > 1 kHz. If the frequency of
the measured signal is > 1 kHz, the bar graph
voltage is unspecified.
Hz
Hz
+
_
RANGE
+
mV
CAT
CAT
_
jo20f.eps
Resistance
(e)
Turn off the power and discharge all capacitors. An external
voltage across a component will give invalid resistance readings.
RANGE
Diode Test
Good Diode Good Diode
RANGE
+
Forward Bias
Bad Diode
RANGE
+
_
jo7f.eps
(G)
40 40
__
Single Beep
40 40
RANGE
CAT
+
Reverse Bias
Bad Diode
RANGE
CAT
+
_
+
Open
Press 1 second to turn the beeper off.
and
Shorted
CAT
_
jo5f.eps
Lead Resistance Compensation
This function compensates for resistance in the leads and the
meter’s internal protection circuitry. You can compensate in
either Lo-Ohms or continuity.
RANGE
RANGE
RANGE
40 40 40
RANGE
1 second
CAT
CAT
+
_
+
CAT
_
+
CAT
CAT
_
jo17f.eps
When zero is displayed, compensation has occurred. The meter
stays compensated until you change functions.
Lo-Ohms
(40 e)
The Lo-Ohms (40 Ω) function improves noise rejection and
resolution, but is less accurate than the ohms function. In this
function, the beeper is turned off.
RANGE
1 Second
RANGE
40
+
_
To compensate for the lead resistance, see “Lead Resistance
Compensation.”
jo6f.eps
Continuity Test
( R )
RANGE
+
40
CAT
_
Opens or shorts > 1 ms are detected. Press
RANGE
+
40
CAT
CAT
_
momentarily
for lead compensation. Press 1 second to turn the
beeper off and place the meter into Lo-Ohms autoranging.
Capacitance
(E)
Turn off the power and discharge the capacitor. If the capacitor
requires more discharging, diSC displays while the capacitor
discharges.
RANGE
jo8f.eps
+
_
+
For rated accuracy in the lowest two capacitance ranges,
subtract the open-lead reading from the measurement.
Current
(? A)
W Warning
To avoid injury, do not attempt a current
measurement if the open circuit voltage
exceeds the rated voltage of the meter.
To avoid blowing an input fuse, use the 10 A jack until you are
sure that the current is less than 40 mA.
jo18f.eps
Turn off power to the circuit. Break the circuit. (For circuits of
more than 10 amps, use a current clamp.) Put the meter in series
with the circuit as shown and turn power on.
1
RANGE
AC
A
4
+
+
2
3
Probe Holder
Maintenance
W Warning
To avoid electric shock, remove the test leads
before opening the case, and close the case before
using the meter. To prevent fire and possible arcflash, use fuses with ratings shown on the back of
the meter.
Caution
To avoid contamination or static damage, do not
touch the circuit board without proper static
protection.
Internal Fuse Test
_
CAT
CAT
jo10f.eps
jo21f.eps
10 A 40 mA
Ω
10-12
RANGE
OK
<.5
Ω
OKOK
OK
jo9f.eps
Battery and Fuse Replacement
Note
Before opening the case, make sure the test leads are
removed and the rotary switch is turned to OFF.
F1
F2
jo14f.eps
Cleaning
To clean the meter, use a damp cloth and mild detergent; do not
use abrasives or solvents on the meter.
Service and Parts
To contact Fluke, call one of the following telephone numbers:
USA and Canada: 1-888-99-FLUKE (1-888-993-5853)
Europe: +31 402-678-200
Japan: +81-3-3434-0181
Singapore: +65Anywhere in the world: +1-425-356-5500
Or, visit Fluke’s Web site at www.fluke.com.
-276-6196
*
Item Description Fluke PN Quan.
BT1
F1*
F2* Fuse, F11 A, 1000 VAC/DC,
* For safety, use exact replacement
Battery, 9 V Alkaline (NEDA 1604A/
IEC 6LR61)
Fuse, F44/100 A, 1000 VAC/DC
Min Interrupt Rating 10 kA
Min Interrupt Rating 17 kA
614487 1
943121 1
943118 1
True RMS and Crest Factor
True rms sensing provides accurate readings on sinusoidal
signals and on signals with harmonics or distorted waveforms.
True rms readings indicate the true heat-providing current which
may cause overheated conductors, connections, breakers, or
transformers.
Crest factor (CF) is the peak signal value divided by the rms
signal value and defines the dynamic range of the meter. A sine
wave has a CF = 1.4.
Specification
Accuracy specifications:
±([% of reading] + [number of
least significant digits] )
Display
Response Time of Digital
Display
Operating Temperature 0°C to 55°C
Storage Temperature -40°C to 60°C
Temperature Coefficient
Relative Humidity 90% (0°C to 30°C)
Altitude Operating: 2000 meters
Battery Type 9 V, NEDA 1604A or IEC 6LR61
Battery Life
Continuity Beeper 4096 Hz
Vibration per MIL-T-PRF 28800F Class III,
Drop I meter drop per IEC 1010-1
Enclosure Conforms to IP-40 per IEC-529
Size (H x W x L)
Weight 365 g (12.9 oz)
Electromagnetic Compatibility V ac and A ac only: RF field = 3 V/m.
Surge Protection 6 kV peak per IEC 1010-1, 1990-09
Safety
Certification
1 year, 18°C to 28°C (64°F to 82°F)
≤ 90% RH
Digital: 4000 counts, updates 4/sec
Analog: 63 segments, updates 40/sec
Frequency: 9,999 counts
Capacitance: 9,999 counts
V ac < 1.5 s
V dc < 1 s
Ω <1 s to 40 kΩ, <2 s to 4 MΩ, <10 s to
40 MΩ
0.1 x (specified accuracy)/°C
(<18°C or >28°C)
75% (30°C to 40°C)
45% (40°C to 50°C)
35% (50°C to 55°C)
Storage: 12,000 meters
500 hrs typical with alkaline
Sinusoidal, Non Operating
3.7 cm x 8.9 - 7.8 cm x 19 cm
(1.5 in x 3.5 - 3.1 in x 7.49 in)
Total accuracy = specified accuracy +
2.0% of range. EN 61326-1: 1997
600 V CAT III and 1000 V CAT II per
ANSI/ISA-S82.01-94, UL3111-1,
CSA/CAN C22.2 No 1010.1-92,
EN 61010 part 1:1993.
AC readings are ac-coupled, true rms, and are valid from 5% to
100% of range for CF 1.4. For crest factors other than 1.4, add
±(2% or reading + 2% of range). Maximum CF is 3 at full scale, 6
at half scale.
Function Range Accuracy
K (45 Hz to
1 kHz)
400.0 mV
4.000 V
40.00 V, 400.0 V, 1000 V
±(1.9%+4)
±(1.9%+2)
±(1.5%+2)
L 4.000 V, 40.00 V, 400.0 V, 1000 V ±(.3%+1)
m
L*
40.00 mV
400.0 mV
e 400.0 Ω
4.000 kΩ, 40.00 kΩ, 4.000 MΩ
400.0 kΩ
40.00 MΩ
Capacitance
99.99 nF, 999.9 nF, 9.999 µF,
99.99 µF, 999.9 µF
9999 µF
±(.3%+5)
±(.3%+1)
±(0.4%+2)
±(0.4%+1)
±(0.6%+1)
±(1%+3)
±(1.9%+2)**
±(1.9%+2)**
±10% typical
R 400 Ω 5% typical***
40 Ω
40.00 Ω*, 400.0 Ω, 5% typical***
G 2.450 V ±2% typical
* In 40 Ω and 40 mV ranges, thermals may introduce additional errors.
Maximum accuracy is obtained when both probe tips are maintained
at the same temperature.
** Accuracy applies when measuring film capacitors or better and the
open lead reading is subtracted from the measurement. This meter
uses a dc-type measurement technique.
*** Accuracy applies after lead resistance compensation.
Function Range Resolution Accuracy Burden
Voltage
?
(45 Hz to
1 kHz)
A
* 10 A continuous, 20 A for 30 seconds.
4.000 mA
40.00 mA
4 A
10.00 A*
4.000 mA
40.00 mA
4 A
10.00 A*
0.001 mA
0.01 mA
0.001 A
0.01 A
0.001 mA
0.01 mA
0.001 A
0.01 A
±(1.5%+4)
±(1.5%+2)
±(1.5%+4)
±(1.5%+2)
±(0.5%+5)
±(0.5%+2)
±(0.5%+5)
±(0.5%+2)
11 mV/mA
11 mV/mA
0.03 V/A
0.03 V/A
11 mV/mA
11 mV/mA
0.03 V/A
0.03 V/A
Function Range Accuracy
Frequency* 99.99, 999.9, 9.999 kHz, 20.00 kHz ±(0.01%+1)
*For rectangular waveforms 25% ≤ duty cycle ≤ 75%, V ac ≤ 1 kHz
Frequency Counter Sensitivity
Input Range* Minimum Sensitivity (RMS Sine Wave)
500 Hz to 20 kHz 1.0 Hz to 500 Hz**
4 V ac 0.3 V 0.7 V
40 V ac 3 V 7 V
400 V ac 30 V 70 V
1000 V ac 300 V Not Applicable
* Maximum input for specified accuracy = 10 x Range or 1000 V
** Display rattle for sine waves below 500 Hz = 5 counts
Function Input Impedance (Nominal)
L, mL, K
L,
m
K
e
G
e
G
* 107 V-Hz max.
>10 MΩ, <100 pF
Common Mode
Rejection Ratio (1 kΩ
Unbalanced)
>120 dB at dc, 50 Hz, or
L
60 Hz
>60 dB, dc to 60 Hz
Open Circuit Test
Voltage
<1.3 V dc <450 mV dc <1.3 V dc
<3.1 V dc 2.45 V dc
Short Circuit Current
<250 µA
<600 µA
Normal Mode Rejection
>60 dB at 50 Hz or 60 Hz
Full Scale Voltage
To 4.0 MΩ 40 MΩ
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