
80K-15
Electronic Air Cleaner Probe
Instruction Sheet
Introduction
The 80K-15 Electronic Air Cleaner Probe (hereafter referred
to as “the probe”) is a low energy probe that extends the 
voltage measuring capability of an ac/dc voltmeter or 
multimeter.
Properly connected, the probe is rated to 15 kV Overvoltage 
Category I. The use of the probe is restricted to low energy 
applications, which are energy limited circuits like 
electrostatic air cleaners. 
measure high voltages on power distribution systems.
The probe is a precision 1000 : 1 voltage divider formed by 
two matched resistors. The unusually high input impedance 
offered by these resistors minimizes circuit loading and 
thereby optimizes measurement accuracy.
Do not use this probe to
®
W
Read First: Safety Information
WWarning
To avoid possible personal injury or electrical shock:
• Use the probe within its voltage ratings and in dry
conditions (no condensation is present).
• Be familiar with and exercise all possible high
voltage safety practices.
• DO NOT use this probe to measure high voltage on
power distribution systems.
• Always hold the probe by its gray handle. Never
allow the probe tip or the yellow part of the probe 
to make body contact.
• Before making a measurement, make sure that the
side of the probe plug with the GND tab is plugged 
into the low (COM) terminal of the meter.
• Attach the grounding lead to earth ground.
• Use a meter with an impedance of 10 MΩ ( ± 1% ).
Using a meter with an input impedance less than 
10 MΩ reduces the accuracy of the reading by 
causing it to be lower than the voltage present.
• DO NOT use the probe with a Fluke multimeter that 
is in the kChek or Automatic Selection mode (i.e. 
Fluke 16, Fluke 12B etc.). The input impedance in 
these modes is very low.
• Make sure the probe tip is firmly attached to the 
body of the probe.
• DO NOT use the probe around explosive gas, 
vapor, or dust.
• DO NOT use the probe if it operates abnormally. 
Protection may be impaired. When in doubt have 
the probe serviced.
PN 690385 May 1998
©1998 Fluke Corporation. All rights reserved. Printed in U.S.A.

80K-15
Electronic Air Cleaner Probe
Symbols
Double insulated.
T
Refer to explanation in this instruction sheet.
W
Lethal voltages may be present.
X
Complies with relevant Canadian Standards 
Association directives.
Earth ground
Using the Probe
1
4. Connect the alligator clip of the probe’s grounding lead 
to earth ground.
5. Touch the probe tip to the circuit being measured and 
read the measurement on the meter display. If 
necessary, apply a correction factor to the reading. 
(See “Note” in the “Specifications,” below.
Table 1. 80K-15 Circuit Loading and Input/Output
Characteristics
Input Voltage Loading Current Output Voltage
10 V 10 nA 10 mV 
100 V 100 nA 100 mV
TRUE RMS MULTIMETER
87
III
DC
H
MIN MAX RANGE HOLD  
HzREL
PEAK MIN MAX
41/2 DIGITS
1 Second
mV
mA
V
A
µA
2
V
OFF
A
mAµA  
10A MAX 
FUSED
V
COM
!
400mA MAX
CAT II
FUSED
1000V MAX
!
3
1 kV 1 µA1 V 
10 kV 10 µA 10 V 
15 kV 15 µA 15 V
Specifications
The 80K-15 Electronic Air Cleaner Probe achieves its rated 
accuracy when it is used with a voltmeter or multimeter (ac 
or dc) with an input impedance of 10 MΩ ± 1%.
The accuracy of the probe does not include the accuracy of
4
the meter. To get the accuracy of the system, the accuracy 
of the meter must be added to the accuracy of the probe.
5
EAOO1F.EPD
A Probe tip 
B Probe body 
C Plug 
D GND tab 
E Grounding lead clip 
F Multimeter or voltmeter
Figure 1. 80K-15 Electronic Air Cleaner Probe
The 80K-15 (Figure 1) is designed to work with a meter that 
has an input impedance of 10 MΩ ( ± 1% ). A meter with an 
input impedance less than 10 MΩ can produce readings 
lower than the voltage present. This can pose a serious 
hazard when a dangerous voltage is present.
The 80K-15 represents a 1000 MΩ load to the circuit being 
measured, or 1 µA per 1 kV. Table 1 shows the circuit 
loading and input/output characteristics of the probe over its 
measurement range.
Taking care to follow the safety practices under “WRead 
First: Safety Information,” use the probe as follows:
1. Turn on a compatible voltmeter or multimeter and 
select the voltage measurement function.
2. Select an appropriate voltage range (i.e., 1 volt reading 
per 1000 volt input. See Table 1).
3. Connect the probe’s output leads to the voltmeter or 
multimeter input terminals.
Note
The input impedance of the Autoranging mode on 
Fluke handheld digital multimeters varies by range.
The input impedance in almost all ranges of Fluke
Ω
multimeters is ~10 M
. The exceptions are: the 3 V 
range on the Fluke Models 21, 23, 25, 27, 70, 73, 
75, 7; and the 4 V range on the Models 10, 11, 12, 
16, 79, 83, 85, 86, 87, 88. In the ranges on these
Ω
multimeters, the impedance is 11.11 M
.
To improve the measurement accuracy of the probe 
when using these ranges on the models indicated, 
apply a correction factor of 0.99 i.e., multiply the 
display reading by 0.99.
Voltage Range:
1 kV to 15 kV dc or peak ac, 
10 kV rms ac
Maximum Current: 
Input Resistance: 
Division Ratio: 
Accuracy DC: 
Accuracy AC: 
Safety:
20 µA 
1000 MΩ 
1000 : 1 (1000 x attenuation) 
± 2 % in 10 
o 
C to 45 o C 
± 5 % @ 60 Hz, in 20 o C to 30 o C 
Complies with IEC 1010-2-31:1993,
Type B, 15 kV dc or peak ac, 10 kV 
rms ac, Overvoltage Category I 
(voltages derived from limited energy 
transformer).
Altitude:
2000 meters

Performance Test
Verify the accuracy of the probe by measuring a 15 kV dc 
 (± 0.25 %) voltage source. When used with a compatible 
dc voltmeter, the probe should measure the source with 
 ± 1% accuracy. No calibration adjustments are needed.
Warranty
LIMITED WARRANTY & LIMITATION OF LIABILITY
This Fluke product will be free from defects in material 
and workmanship for one year from the date of 
purchase. This warranty does not cover fuses, 
disposable batteries or damage from accident, neglect, 
misuse or abnormal conditions of operation or handling. 
Resellers are not authorized to extend any other
warranty on Fluke’s behalf. To obtain service during the 
warranty period, send your defective tester to the 
nearest Fluke Authorized Service Center with a 
description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO 
OTHER WARRANTIES, SUCH AS FITNESS FOR A 
PARTICULAR PURPOSE, ARE EXPRESSED OR 
IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, 
INDIRECT, INCIDENTAL OR CONSEQUENTIAL 
DAMAGES OR LOSSES, ARISING FROM ANY CAUSE 
OR THEORY. Since some states or countries do not 
allow the exclusion or limitation of an implied warranty or 
of incidental or consequential damages, this limitation of 
liability may not apply to you.
Fluke Corporation Fluke Europe B.V. 
P.O. Box 9090  P.O. Box 1186 
Everett, WA. 5602 B.D. Eindhoven 
98206-9090 The Netherlands
10/96
Contacting Fluke
For application or operation assistance, or information 
on Fluke products, call:
USA: 1-888-99-FLUKE (1-888-993-5853) 
Canada: 1-800-36-FLUKE (1-800-363-5853) 
Europe: +31 402-678-200 
Japan: +81-3-3434-0181 
Singapore: +65-738-5655 
Anywhere in the world: +1-425-446-5500
Or, visit Fluke’s Web site at www.fluke.com.