Fluke 80K-15 User Manual

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