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By checking this box, I agree to receive marketing communications and product offers by email from Fluke Electronics Corporation, transacting under Fluke Industrial,. Apr 12, 2017 Author Topic: Fluke 75 & Fluke 73 Multimeter Spare Parts (Read 4025 times). Firstly the Fluke 75 is showing 2 ohm when the lead posts are connected together. Board has been cleaned with IPA and have set calibration pot using a 3v reference on the DC volts scale. Just remember that a Fluke 70 series I, II and III meter can run 2,000 hours.
77/75/23/21 English Instruction Sheet
Page
1
®
77/75/23/21
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 probes to a voltage source when the test
leads are plugged into the 10 A or 300 mA input jack.
•
Never apply more than the 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.
W
Warning
To avoid false readings, which could lead to
possible electric shock or personal injury, replace
the battery as soon as the battery indicator (
possible electric shock or personal injury, replace
the battery as soon as the battery indicator (
M
)
appears.
Symbols
W
Read First: Safety Information
Y
Dangerous Voltage May Be Present
T
Double Insulation
Overvoltage Installation Category per IEC 1010:
CAT II
CAT III
Typical locations include; main wall outlets,
local appliances, and portable equipment.
local appliances, and portable equipment.
Typical locations include switches in the fixed
installation and equipment for industrial use
permanently connected to the fixed installation.
installation and equipment for industrial use
permanently connected to the fixed installation.
PN 650512 August 1997 Rev.2, 7/98
1997, 1998 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies
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77/75/23/21
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 probes to a voltage source when the test leads are plugged into the 10 A or 300 mA input jack.
∙Never apply more than the 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
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.
PN 650512 August 1997 Rev.2, 7/98
ã 1997, 1998 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies
V
600V CAT
1000V CAT
FUSED
hc1f.eps
See Specifications for overload protection.
Autorange
The meter defaults to autorange when you turn on the meter.
Manual Range
Manual ranging is available in V ac, V dc, ohms, A ac, and A dc.
MANUAL
MANUAL
RANGE RANGE
Momentary
CAT
CAT
+_
hc11f.eps
To return to autorange, press for 1 second or turn the rotary switch.
Automatic Touch Holdâ Mode
W Warning
To avoid electric shock, do not use the Touch Holdâ mode to determine if a circuit with high voltage is dead. The Touch Holdâ mode will not capture unstable or noisy readings.
The Touch Holdâ mode automatically captures and displays stable readings for all functions.
HOLD
AUTO HOLD | HOLD | HOLD |
RANGE | RANGE | RANGE |
Momentary
V | V | V | |||
CAT | |||||
CAT | |||||
+ | _ | + | _ | + | _ |
Single Beep | |||||
hc4f.eps |
When the meter captures new input, it beeps and a new reading is displayed.
Note
Stray voltages can produce a new reading.
To exit the Touch Holdâ mode, press momentarily 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.
Standby
If the meter is on but is inactive for an hour (20 minutes in diode test), the display goes blank and displays four bar graph segments. To resume operation, turn the rotary switch or press a button.
AC and DC Voltage (K L mL)
Volts AC | Volts DC | Millivolts DC |
mV
CAT | CAT | CAT | |||
CAT | CAT | CAT | |||
+ | _ | + | _ | + | _ |
hc3f.eps |
Resistance (e)
Turn off the power and discharge all capacitors. An external voltage across a component will give invalid resistance readings.
RANGE
CAT
CAT
+_
hc7f.eps
Diode Test (G)
Good Diode
RANGE
CAT
+_
Single Beep
Forward Bias
Bad Diode
RANGE
CAT
CAT
+_
Open
Good Diode
RANGE
CAT
![Fluke Fluke](https://media.rs-online.com/t_large/F3944492-01.jpg)
CAT
+_
Reverse Bias
Bad Diode
RANGE
CAT
CAT
+_
and
Shorted
hc5f.eps
Continuity Test ( R )
RANGE | RANGE |
CAT | CAT | ||
CAT | CAT | ||
+ | _ | + | _ |
hc8f.eps
If continuity exists (resistance < 210 Ω for Models 21/75 and <270 Ω for Models 23/77), the beeper sounds continuously. The meter beeps twice if it is in Touch Holdâ mode.
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 300 mA.
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
A
4 +
_
+
2
3
Probe Holder
hc14f.eps
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
Fluke 73 Iii Multimeter User Manual
To avoid contamination or static damage, do not touch the circuit board without proper static protection.
Internal Fuse Test
300 mA | 10 A | |||||||||||||
4-8 Ω | OK | <.5 Ω | OK | |||||||||||
OK | OK |
Battery Replacement
Note
Before opening the case, make sure the test leads are removed and the rotary switch is turned to OFF.
hc12f.eps
Fuse Replacement
F1
F2 | F2 |
F1 | |
23/77 | 21/75 |
hc13f.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: +65-*-276-6196
Anywhere in the world: +1-425-356-5500
Or, visit Fluke’s Web site at www.fluke.com.
Item | Description | Fluke | Quan. | ||
PN | |||||
BT1 | Battery, 9 V, NEDA 1604/IEC 6F22, or | 696534 | 1 | ||
NEDA 1604A/IEC 6LR61 | 614487 | ||||
Models 21/75: | |||||
F1* | Fuse, F630 mA, 250 V, Min Interrupt | 740670 | 1 | ||
Rating 1500 A or IEC 127-1 | |||||
F2* | Fuse, F11 A, 1000 VAC/DC, | 943118 | 1 | ||
Min Interrupt Rating 17 kA | |||||
Models 23/77: | |||||
F1* | Fuse, F44/100 A, 1000 VAC/DC, | 943121 | 1 | ||
Min Interrupt Rating 10 kA | |||||
F2* | Fuse, F11 A, 1000 VAC/DC, | 943118 | 1 | ||
Min Interrupt Rating 17 kA |
* For safety, use exact replacement
Specifications
Accuracy is specified for a period of one year after calibration, at 18°C to 28°C (64°F to 82°F) with relative humidity to 90%. AC conversions are ac-coupled, average responding, and calibrated to the RMS value of a sine wave input.
Accuracy specifications are given as:
±([% of reading] + [number of least significant digits])
Maximum Voltage Between | Rated voltage |
any Terminal and Earth | |
Ground | |
Display | Digital: 3,200 counts, updates 2.5/sec |
Analog: 31 segments, updates 25/sec | |
Response Time of Digital | V ac < 2 s |
Display | V dc < 1 s |
Ω < 1s to 320 kΩ, < 2s to 3.2 MΩ, | |
< 10 s to 32 MΩ | |
Operating Temperature | 0°C to 50°C |
Storage Temperature | -40°C to 60°C |
Temperature Coefficient | 0.1 x (specified accuracy)/°C |
(<18°C or >28°C) |
Electromagnetic Compatibility In RF field of 3 V/m on all functions.
Relative Humidity
except 32 MΩ range
32 MΩ range only
Altitude
Battery Type
Battery Life
Continuity Beeper
Shock, Vibration
Size (H x W x L)
Weight
Safety
EMC Regulations
Certifications/Listings
Total accuracy = Specified accuracy + 0.1% of range.
0% to 90% (0°C to 35°C) 0% to 70% (35°C to 50°C) 0% to 80% (0°C to 35°C) 0% to 70% (35°C to 50°C)
Operating: 2000 meters
Storage: 12,000 meters
9 V NEDA 1604 or 6F22 or 006P, or NEDA 1604A or 6LR61
2000 hrs typical with alkaline
Fluke 75 Multimeter Instruction Manual
1600 hrs typical with carbon zinc
4096 Hz
per MIL-T-PRF 28800F Class III, 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)
365 g (12.9 oz)
Models 21/75 Series III: 600 V CAT III, Models 23/77 Series III: 600 V CAT III and 1000 V CAT II per ANSI/ISA S82.01-1994, EN 61010-1: 1993, CSA C22.2 No 1010.1-92, UL 3111-1.
EN 61326-1 1997.
Function | Range | Accuracy | ||
L | 3.200 V, 32.00 V, 320.0 V | ±(0.3%+1) | ||
600 V (21/75), 1000 V (23/77) | ±(0.4%+1) | |||
mL | 320.0 mV | ±(0.3%+1) | ||
K (45 to 500 Hz, | 3.200 V, 32.00 V, 320.0 V | ±(2%+2) | ||
3.2 V range. Other | 600 V (21/75), 1000 V (23/77) | ±(2%+2) | ||
ranges 45 to 1 kHz) | ||||
e | 21/75: | 320.0 Ω | ±(0.5%+2) | |
3200 Ω, 32.00 kΩ, | ±(0.5%+1) | |||
320.0 kΩ 3.200 MΩ | ±(0.5%+1) | |||
32.00 MΩ | ±(2%+1) | |||
23/77: | 320.0 Ω | ±(0.5%+3) | ||
3200 Ω, 32.00 kΩ, | ±(0.5%+1) | |||
320.0 kΩ 3.200 MΩ | ±(0.5%+1) | |||
32.00 MΩ | ±(2%+1) | |||
G R | 2.0 V | ±(1% typical) |
Function | Range | Accuracy | Burden | |
Voltage | ||||
(typical) | ||||
? (45 Hz | 32.00 mA, 320.0 mA | ±(2.5%+2) | 6 mV/mA | |
to 1 kHz) | 10.00 A * | ±(2.5%+2) | 50 mV/A | |
A | 32.00 mA, 320.0 mA | ±(1.5%+2) | 6 mV/mA | |
10.00 A * | ±(1.5%+2) | 50 mV/A |
* 10 A continuous, 20 A for 30 seconds maximum.
Overload protection for all functions and ranges: Rated voltage.
Function | Input Impedance (Nominal) | |
L, mL, K | >10 MΩ, <50 pF | |
Common Mode | Normal Mode Rejection | |
Rejection Ratio | ||
(1 kΩ Unbalanced) | ||
L, mL | >120 dB at dc, | >60 dB at 50 Hz or 60 Hz |
50 Hz, or 60 Hz |
K>60 dB dc to 60 Hz
Open Circuit Test | Full Scale Voltage | ||||||
Voltage | To 3.2 MΩ | 32 MΩ | |||||
e | <3.1 V dc | <440 mV dc | <1.4 V dc | ||||
<2.8 V dc (typical) | <420 mV dc | <1.3 V dc | |||||
(typical) | (typical) | ||||||
Open Circuit Test | Full Scale Voltage | ||||||
Voltage | |||||||
G R | <3.1 V dc | 2.0 V dc | |||||
Short Circuit Current (typical) | |||||||
21/75: | 23/77: | ||||||
e | 400 μA | 300 μA | |||||
G R | 500 μA | 400 μA | |||||
G | VF | Current (typical) | |||||
21/75: | 23/77: | ||||||
0.0 V | 0.5 mA | 0.4 mA | |||||
0.6 V | 0.4 mA | 0.3 mA | |||||
1.2 V | 0.3 mA | 0.2 mA | |||||
2.0 V | 0.1 mA | 0.1 mA |
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