Users Manual
373
Clamp Meter
PN 3612805
July 2010
© 2010 Fluke Corporation. All rights reserved. Printed in Taiwan. Specifications are subject to change without notice.
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Table of Contents
Title
Page
Introduction.................................................................................................................
1
1
2
7
How to Contact Fluke.................................................................................................
Safety Information ......................................................................................................
The Meter ...................................................................................................................
Electrical Specifications.......................................................................................... 15
Mechanical Specifications...................................................................................... 16
Environmental Specifications ................................................................................. 16
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Introduction
XWWarning
Read "Safety Information" before you use the Meter.
The Fluke 373 Clamp Meter (the Meter) measures true-rms ac and dc voltage, ac current,
resistance, and capacitance.
How to Contact Fluke
To contact Fluke, call one of the following telephone numbers:
•
•
•
•
•
•
•
Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)
Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)
Canada: 1-800-36-FLUKE (1-800-363-5853)
Europe: +31 402-675-200
Japan: +81-3-3434-0181
Singapore: +65-738-5655
Anywhere in the world: +1-425-446-5500
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To see, print, or download the latest manual supplement, visit
Safety Information
A Warning identifies conditions and actions that pose hazard(s) to the user; A Caution identifies
conditions and procedures that could cause Meter damage, equipment under test damage, or
permanent loss of data.
Symbols used on the Meter and in this manual are explained in Table 1.
XWWarning
To prevent possible electrical shock or personal injury, follow these guidelines:
•
Use the Meter only as specified in this manual or the protection provided by the
Meter can be compromised.
•
Examine the case before you use the Meter. Look for cracks or missing plastic.
Carefully look at the insulation around the connectors.
•
•
Never measure ac current while the test leads are inserted into the input jacks.
Make sure the battery door is closed and latched before operating the Meter.
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Clamp Meter
Safety Information
•
•
Remove the test leads from the Meter before the battery door is opened.
Examine the test leads for damaged insulation or exposed metal. Check test lead
continuity. Replace damaged test leads before using the Meter.
Do not use the Meter if it operates incorrectly. Protection can be compromised.
When in doubt, have the Meter serviced.
•
•
Do not use the Meter around explosive gas, vapor or in damp or wet
environments.
•
•
When measuring, keep fingers behind the Tactile Barrier. See "The Meter" .
Use only type AA batteries, properly installed in the Meter case, to power the
Meter.
•
To avoid false readings that can lead to electrical shock and injury, replace the
batteries as soon as the low battery indicator () appears.
When servicing the Meter, use only specified replacement parts.
Have the Meter serviced only by qualified service personnel.
Be careful around voltages > 30 V ac rms, 42 V ac peak, or 60 V dc. Such
voltages pose a shock hazard.
•
•
•
•
•
Do not apply more than the rated voltage, as marked on the Meter, between the
terminals or between any terminal and earth ground.
When using the probes, keep fingers behind the finger guards on the probes.
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•
Connect the common test lead before connecting the live test lead. When
disconnecting test leads, disconnect the live test lead first.
Do not work alone so assistance can be rendered in an emergency.
Use extreme caution when working around bare conductors or bus bars. Contact
with the conductor could result in electric shock.
•
•
•
Adhere to local and national safety codes. Individual protective equipment must
be used to prevent shock and arc blast injury where hazardous live conductors
are exposed.
•
•
•
Disconnect circuit power and discharge all high-voltage capacitors before you
measure resistance, continuity, or capacitance.
Do not measure current in circuits carrying more than 600 V or 600 A with the
Meter Jaw.
Never operate the Meter with the back cover removed or the case open.
WCaution
To avoid possible damage to the Meter or to equipment under test:
•
•
Use the proper jacks, function, and range for the measurement application.
Clean the case and accessories with a damp cloth and mild detergents only.
Do not use abrasives or solvents. Make sure all water is removed before
use.
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Clamp Meter
Safety Information
Table 1. Symbols
Symbol
Symbol
Meaning
Meaning
B
AC (Alternating Current)
Earth ground
J
~
Do not dispose of this product as
unsorted municipal waste. Go to
Fluke’s website for recycling
information.
F
DC (Direct Current)
Conforms to European Union
directives.
X
Hazardous voltage
P
)
T
Risk of Danger. Important
information. See Manual.
Conforms to relevant North American
Safety Standards.
W
M
®
Battery
Double insulated
Examined and licensed by TÜV
Product Services.
Conforms to relevant Australian
standards.
;
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Symbol
Meaning
Symbol
Meaning
IEC Measurement Category III
IEC Measurement Category IV
CAT III equipment has protection
against transients in equipment in
fixed-equipment installations, such
as distribution panels, feeders and
short branch circuits, and lighting
systems in large buildings.
CAT IV equipment has protection
against transients from the primary
supply level, such as an electricity
Meter or an overhead or
CAT III
CAT IV
underground utility service.
Application around and removal
from HAZARDOUS LIVE
conductors is permitted.
,
Note
The Measurement Category (CAT) and voltage rating of any combination of test probe,
test probe accessory, current clamp accessory, and the Meter is the LOWEST rating of
any individual component.
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Clamp Meter
The Meter
The Meter
1
ghl008.eps
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Auto Off
20
ghl001.eps
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Clamp Meter
The Meter
Backlight
ghl002.eps
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373
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A
ghl003.eps
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Clamp Meter
The Meter
V
V
or
> 30 V
V
V
ghl004.eps
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< 30
ghl005.eps
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Clamp Meter
The Meter
HOLD
2
1
3
ghl006.eps
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3
1
2
ghl007.eps
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Clamp Meter
The Meter
Electrical Specifications
AC Current
Range .....................................................600.0 A
Resolution...............................................0.1 A
Accuracy .................................................2 % 5 digits (48 – 62 Hz)
Crest Factor (50/60 Hz) ..........................2.5 @ 600 A
AC Voltage
Range ....................................................600.0 V
Resolution...............................................0.1 V
Accuracy .................................................1.0 % 5 digits (48 – 62 Hz)
DC Voltage
Range ....................................................600.0 V
Resolution...............................................0.1 V
Accuracy .................................................1 % 5 digits
Resistance
Range .....................................................600.0 Ω/6000 Ω
Resolution...............................................0.1 Ω/1 Ω
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Accuracy .................................................1 % 5 digits
Continuity Beeper ...................................≤ 30 Ω
Capacitance
Range .....................................................10.0 – 100.0 μF / 1000 μF
Resolution...............................................0.1 μF/1 μF
Accuracy .................................................1.9 % 2 digits
Mechanical Specifications
Size (L x W x H) .....................................232 mm x 85 mm x 45 mm
Weight.....................................................370 g
Environmental Specifications
Operating Temperature...........................-10 °C to +50 °C
Storage Temp .........................................-40 °C to +60 °C
Operating Humidity .................................Non condensing (< 10 °C)
≤ 90 % RH (at 10 °C to 30 °C)
≤ 75 % RH (at 30 °C to 40 °C)
≤ 45 % RH (at 40 °C to 50 °C)
(Without Condensation)
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Clamp Meter
The Meter
Operating Altitude ...................................3000 meters
Storage Altitude ......................................12,000 meters
EMI, EMC................................................Meets all applicable requirements in EN61326-1:2006
Temperature Coefficients........................Add 0.1 x specified accuracy for each degree C above
28 °C or below 18 °C
Safety Compliance..................................ANSI/ISA S82.02.01:2004
CAN/CSA-C22.2 No. 61010-1-04
IEC/EN 61010-1:2001, 600V CAT III, 300V CAT IV
Pollution Degree 2
EN/IEC 61010-2-32:2002
EN/IEC 61010-031:2002/A1:2008
P
Agency Approvals................................... ), ;, ®
Batteries..................................................2 AA, NEDA 15A, IEC LR6
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