Agilent U1191A User guide
Agilent U1190A Series
Handheld Clamp Meters
User’s Guide
Agilent Technologies
Notices
CAUTION
WARNING
© Agilent Technologies, Inc., 2011
No p art o f this manu al may be re produce d in
any form or by any means (including electronic storage and retrieval or translation
into a foreign language) without prior agreement and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
Manual Part Number
U1191-90003
Edition
First Edition, September 2011
Agilent Technologies, Inc.
5301, Stevens Creek Blvd.
Santa Clara, CA 95051 USA
Warranty
The material contained in this document is
provided “as is,” and is subject to change,
without notice, in future editions. Further,
to the maximum extent permitted by the
applicable law, Agilent disclaims all warranties, either express or implied, with
regard to this manual and any information
contained herein, including but not limited
to the implied warranties of merchantability and fitness for a particular purpose.
Agilent shall not be liable for errors or for
incidental or consequential damages in
connection with the furnishing, use, or
performance of this document or of any
information contained herein. Should Agilent and the user have a separate written
agreement with warranty terms covering
the material in this document that conflict
with these terms, the warranty terms in
the separate agreement shall control.
Technology Licenses
The hardware and or software described in
this document are furnished under a license
and may be used or copied only in accordance with the terms of such license.
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for the Department of Defense, DFARS
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Items) and DFARS 227.7202-3 (Rights in
Commercial Computer Software or Computer Software Documentation).
Safety Notices
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the likes
of that, if not correctly performed
or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the likes of that, if not correctly
performed or adhered to, could
result in personal injury or death.
Do not proceed beyond a WARNING notice until the indicated
conditions are fully understood
and met.
II U1190A Series User’s Guide
Safety Symbols
400 A
MAX
600 A
MAX
CAT III
600 V
CAT IV
300 V
The following symbols on the instrument and in the documentation
indicate precautions which must be taken to maintain safe operation of
the instrument.
DC (Direct current or voltage)
AC (Alternating current or voltage)
Both direct and alternating current
Earth (ground) terminal
Equipment protected throughout by
double insulation or reinforced
insulation
Caution, risk of electric shock Category IV 300 V overvoltage protection
Caution, risk of danger (refer to this manual
for specific Warning or Caution information)
Application around and removal from
HAZARDOUS LIVE conductors is permitted
U1191A/U1192A: Maximum allowable
current measurement is 400 A
U1193A/U1194A: Maximum allowable
current measurement is 600 A
Category III 600 V overvoltage protection
U1190A Series User’s Guide III
Safety Considerations
CAUTION
WARNING
Read the information below before using this instrument.
The following general safety precautions must be observed during all
phases of operation, service, and repair of this instrument. Failure to
comply with these precautions or with specific warnings elsewhere in this
manual violates safety standards for design, manufacture, and intended
use of the instrument. Agilent Technologies assumes no liability for the
customer’s failure to comply with these requirements.
• Disconnect circuit power and discharge all high-voltage capacitors
before testing resistance, continuity, diodes, or capacitance.
• Use the proper terminals, function, and range for your
measurements.
• This device is for use at altitudes of up to 2,000 m.
• Never measure voltage when current measurement is selected.
• Always use the specified battery type. The power for the meter is
supplied with two standard AAA 1.5 V batteries. Observe the
correct polarity markings before you insert the batteries to ensure
proper insertion of the batteries in the meter.
IV U1190A Series User’s Guide
• Do not use the meter if it is damaged. Before you use the meter,
inspect the case. Look for cracks or missing plastic. Pay
particular attention to the insulation surrounding the connectors.
• Inspect the test leads for damaged insulation or exposed metal.
Check the test leads for continuity. Replace damaged test leads
before you use the meter.
• Do not operate the meter around explosive gas, vapor, or wet
environments.
• Do not apply more than the rated voltage and current (as marked
on the meter) between the terminals or between the terminal and
the earth ground.
WARNING
• Never use the meter in wet conditions or when there is water on
the surface. If the meter is wet, ensure that the meter is dried only
by trained personnel.
• Before use, verify the meter's operation by measuring a known
voltage. Use caution when working above 60 V DC, 30 V AC RMS,
or 42.4 V peak. Such voltages pose a shock hazard.
• When measuring current, turn off the circuit power before
connecting the meter in the circuit. Remember to place the meter
in series with the circuit.
• When measuring temperature, keep the thermocouple probe as
close to the meter as possible, and avoid contact with surfaces
above 60 V DC, 30 V AC RMS, or 42.4 V peak. Such voltages pose a
shock hazard.
• When servicing the meter, use only the specified replacement
parts.
• When using the probes, keep your fingers behind the finger
guards on the probes.
• Connect the common test lead before you connect the live test
lead. When you disconnect the leads, disconnect the live test lead
first.
U1190A Series User’s Guide V
• Remove the test leads from the meter before you open the battery
cover. Do not operate the meter with the battery cover or portions
of the cover removed or loosened.
• To avoid false readings, which may lead to possible electric shock
or personal injury, replace the battery as soon as the low battery
indicator appears and flashes.
• Use the meter only as specified in this guide. Otherwise, the
protection provided by the meter may be impaired.
• Individual protective equipment must be used if hazardous live
parts in the installation are accessible where measurement is to
be carried out.
• The tactile indicator or barrier, indicates the limit of safe access
of the handheld part.
Environmental Conditions
NOTE
This instrument is designed for indoor use and in an area with low
condensation. The table below shows the general environmental
requirements for this instrument.
Environmental conditions Requirements
Operating temperature –10 °C to 50 °C
Up to 80% RH (relative humidity) for temperature
Operating humidity
up to 30 °C, decreasing linearly to 50% RH at
50 °C
Storage temperature
Altitude Up to 2000 meters
Pollution degree Pollution degree 2
The U1190A Series Handheld Clamp Meter complies with the following safety and
EMC requirements:
• IEC 61010-1:2001/EN 61010-1:2001
• IEC 61010-2-032:2002/EN 61010-2-032:2002
• CAN/CSA-C22.2 No. 61010-1-04
• CAN/CSA-C22.2 No. 61010-2-032-04
• ANSI/UL Std. No. 61010-1:2004
• IEC61326-1:2005/EN61326-1:2006
• Canada: ICES/NMB-001: Issue 4, June 2006
• Australia/New Zealand: AS/NZS CISPR 11:2004
–40 °C to 60 °C, 40% to 80% RH (without
batteries)
VI U1190A Series User’s Guide
Regulatory Markings
The CE mark is a registered trademark
of the European Community. This CE
mark shows that the product complies
with all the relevant European Legal
Directives.
The C-tick mark is a registered
trademark of the Spectrum
Management Agency of Australia. This
signifies compliance with
the Australia EMC Framework
regulations under the terms of the
Radio Communication Act of 1992.
ICES/NMB-001 indicates that this ISM
device complies with the Canadian
ICES-001.
Cet appareil ISM est confomre a la
norme NMB-001 du Canada.
The CSA mark is a registered
trademark of the Canadian Standards
Association.
This instrument complies with the
WEEE Directive (2002/96/EC) marking
requirement. This affixed product label
indicates that you must not discard
this electrical or electronic product in
domestic household waste.
This symbol indicates the time period
during which no hazardous or toxic
substance elements are expected to
leak or deteriorate during normal use.
Forty years is the expected useful life
of the product.
U1190A Series User’s Guide VII
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC
This instrument complies with the WEEE Directive (2002/96/EC) marking
requirement. This affixed product label indicates that you must not discard
this electrical or electronic product in domestic household waste.
Product Category:
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
The affixed product label is as shown below.
Do not dispose in domestic household waste.
To return this unwanted instrument, contact your nearest Agilent Service
Center, or visit
www.agilent.com/environment/product
for more information.
VIII U1190A Series User’s Guide
Declaration of Conformity (DoC)
NOTE
The Declaration of Conformity (DoC) for this instrument is available on the
Agilent website. You can search the DoC by its product model or
description at the web address below.
http://regulations.corporate.agilent.com/DoC/search.htm
If you are unable to search for the respective DoC, please contact your
local Agilent representative.
U1190A Series User’s Guide IX
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X U1190A Series User’s Guide
Table of Contents
1 Introduction
About This Manual 2
Documentation map 2
Safety notes 2
Preparing Your Clamp Meter 3
Checking the shipment 3
Installing the batteries 3
Turning on your clamp meter 6
Automatic Power-Off (APO) 7
Enabling the backlight 7
Enabling the flashlight 8
Alerts and warnings during measurement 9
Power-on options 10
Your Clamp Meter in Brief 11
Dimensions 11
Overview 13
Rotary switch 15
Keypad 17
Display screen 18
Input terminals 21
Cleaning Your Clamp Meter 23
2 Making Measurements
Measuring AC or DC Current 26
Measuring AC Voltage 30
Measuring DC Voltage 32
Measuring Resistance 34
Testing for Continuity 36
U1190A Series User’s Guide XI
Testing Diodes 39
Measuring Capacitance 43
Measuring Temperature 45
Measuring AC or DC Current (up to µA) 48
Measuring Frequency 50
3 Clamp Meter Features
Detecting AC Voltage Presence (Vsense) 54
Making Relative Measurements (Null) 57
Capturing Maximum and Minimum Values (Max.Min) 58
Freezing the Display (Hold) 60
4 Characteristics and Specifications
Product Characteristics 62
Specification Assumptions 64
Measurement Category 65
Measurement category definition 65
Electrical Specifications 66
DC specifications 66
AC specifications 68
Capacitance specifications 69
Temperature specifications 70
Frequency specifications 71
Frequency sensitivity specifications 71
Display update rate (approximate) 72
XII U1190A Series User’s Guide
List of Figures
Figure 1-1 Installing the batteries 4
Figure 1-2 Powering on the clamp meter 6
Figure 1-3 Front panel 13
Figure 1-4 Rear panel 14
Figure 2-1 AC current display 27
Figure 2-2 Measuring AC current 27
Figure 2-3 Wire separator and hook design 28
Figure 2-4 AC voltage display 30
Figure 2-5 Measuring AC voltage 31
Figure 2-6 DC voltage display 32
Figure 2-7 Measuring DC voltage 33
Figure 2-8 Resistance display 34
Figure 2-9 Measuring resistance 35
Figure 2-10 Open continuity display 36
Figure 2-11 Closed continuity display 36
Figure 2-12 Testing for continuity 38
Figure 2-13 Diode display 39
Figure 2-14 Open diode display 40
Figure 2-15 Testing forward-bias diode 41
Figure 2-16 Testing reverse-bias diode 42
Figure 2-17 Capacitance display 43
Figure 2-18 Measuring capacitance 44
Figure 2-19 Temperature display 45
Figure 2-20 Measuring the surface temperature 47
Figure 2-21 DC current display 48
Figure 2-22 Measuring AC/DC current (up to µA) 49
Figure 2-23 Frequency display 51
Figure 2-24 Measuring frequency 51
Figure 3-1 Vsense (high sensitivity) display 55
Figure 3-2 Vsense (low sensitivity) display 55
Figure 3-3 Detecting voltage presence 56
Figure 3-4 Null display 57
Figure 3-5 Max.Min display 58
Figure 3-6 Hold display
60
U1190A Series User’s Guide XIII
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XIV U1190A Series User’s Guide
List of Tables
Tab le 1- 1 Battery level indicator 5
Tab le 1- 2 Power-on options 10
Tab le 1- 3 Rotary switch functions 16
Tab le 1- 4 Keypad functions 17
Tab le 1- 5 General annunciators 18
Tab le 1- 6 Measurement units display 20
Tab le 1- 7 Terminal connections for different measuring
functions 21
Tab le 4- 1 DC specifications 66
Tab le 4- 2 AC voltage specifications 68
Tab le 4- 3 AC current specifications 68
Tab le 4- 4 Capacitance specifications 69
Tab le 4- 5 Temperature specifications 70
Tab le 4- 6 Frequency specifications 71
Tab le 4- 7 Frequency sensitivity and trigger-level specifications for
voltage measurements 71
Tab le 4- 8 Frequency sensitivity and trigger level specifications for
current measurements 72
Tab le 4- 9 Display update rate (approximate) 72
U1190A Series User’s Guide XV
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XVI U1190A Series User’s Guide
U1190A Series Handheld Clamp Meter
User’s Guide
1 Introduction
About This Manual 2
Documentation map 2
Safety notes 2
Preparing Your Clamp Meter 3
Checking the shipment 3
Installing the batteries 3
Turning on your clamp meter 6
Automatic Power-Off (APO) 7
Enabling the backlight 7
Enabling the flashlight 8
Alerts and warnings during measurement 9
Power-on options 10
Your Clamp Meter in Brief 11
Dimensions 11
Overview 13
Rotary switch 15
Keypad 17
Display screen 18
Input terminals 21
Cleaning Your Clamp Meter 23
This chapter teaches you how to set up your clamp meter
for the first time. An introduction to all the features of the
clamp meter is also given.
Agilent Technologies
1
1 Introduction
About This Manual
About This Manual
The descriptions and instructions in this manual apply to
the Agilent U1191A, U1192A, U1193A, and U1194A handheld
clamp meters (hereafter referred to as the clamp meter).
The model U1194A appears in all illustrations.
Documentation map
The following manuals and software are available for your
clamp meter. For the very latest version, please visit our
website at: http://www.agilent.com/find/hhTechLib.
Check the manual revision on the first page of each manual.
• User’s Guide. This manual.
•Quick Start Guide. Printed copy for outdoor use,
included with shipment.
• Service Guide. Free download at the Agilent website.
Safety notes
Safety notes are used throughout this manual (see the
“Safety Notices” section for format examples). Familiarize
yourself with each of the notes and its meaning before
operating your clamp meter.
More pertinent safety notes for using this product are
located under the “Safety Considerations” section.
Do not proceed beyond a safety notice until the indicated
conditions are fully understood and met.
2 U1190A Series User’s Guide
Preparing Your Clamp Meter
CAUTION
Checking the shipment
When you receive your clamp meter, check the shipment
according to the following procedure.
1 Inspect the shipping container for damage. Signs of
damage may include a dented or torn shipping container
or cushioning material that indicates signs of unusual
stress or compacting. Save the packaging material in case
the clamp meter needs to be returned.
2 Carefully remove the contents from the shipping
container, and verify that the standard accessories and
your ordered options are included in the shipment
according to the standard shipped items list found in the
printed copy of the U1190A Series Quick Start Guide.
3 For any question or problems, refer to the Agilent contact
numbers on the back of this manual.
Introduction 1
Preparing Your Clamp Meter
U1190A Series User’s Guide 3
Installing the batteries
Your clamp meter is powered by two 1.5 V AAA alkaline
batteries (included with the shipment). When you receive
your clamp meter, the AAA alkaline batteries are not
installed.
Use the following procedure to install the batteries.
Before you proceed with the batteries installation, remove all cable
connections to the terminals and ensure that the rotary switch is at the
OFF position. Use only the battery type specified in the “Product
Characteristics” on page 62.
1 Introduction
Preparing Your Clamp Meter
1 Open the battery cover. Loosen the screw with a suitable
Phillips screwdriver and remove the battery cover as
shown in Figure 1-1.
2 Insert the batteries. Observe the proper battery polarity.
The terminal ends of each battery are indicated inside the
battery compartment.
3 Close the battery cover. Place the battery cover back in
its original position and tighten the screw.
Figure 1-1 Installing the batteries
The battery level indicator in the lower left- hand corner of
the display indicates the relative condition of the batteries.
Table 1- 1 describes the various battery levels the indicator
represents.
4 U1190A Series User’s Guide
Tab l e 1 - 1 Battery level indicator
WARNING
Indication Battery capacity
Full capacity
2/3 capacity
1/3 capacity
Introduction 1
Preparing Your Clamp Meter
(Flashing periodically)
[1] Batteries change advised. Always use the specified battery type listed in the
“Product Characteristics” on page 62.
Almost empty
[1]
To avoid false readings, which could lead to possible electric shock
or personal injury, replace the batteries as soon as the low battery
indicator appears. Do not discharge the batteries by shorting the
batteries or reversing the polarity of the batteries.
U1190A Series User’s Guide 5
1 Introduction
Preparing Your Clamp Meter
Turning on your clamp meter
To power ON your clamp meter, turn the rotary switch from
the OFF position to any other position.
Figure 1-2 Powering on the clamp meter
To power OFF your clamp meter, turn the rotary switch to
the OFF position.
6 U1190A Series User’s Guide
Automatic Power-Off (APO)
NOTE
Your clamp meter automatically turns off if the rotary
switch is not moved or a key is not pressed for 15 minutes
(default). The clamp meter will beep thrice before it powers
off. Pressing any key or turning the rotary switch to a new
position will turn the clamp meter back on after it is
powered off automatically.
The symbol is shown on the bottom left of the display
when the automatic power-off function is enabled.
Follow the steps below to change the timer period or
completely disable the automatic power-off.
1 Press and hold while powering on the clamp meter to
enter the Setup menu.
2 The automatic power- off (A #) timer period is the first
Setup item shown.
3 Press to make changes to the A # value.
Press or to change the timer period (from
A 01 to A 99 minutes) or to completely disable the
automatic power-off function (AoFF).
4 Press to save the changes, or press to discard
the changes and proceed to the next Setup item.
5 Cycle the clamp meter’s power to exit the Setup menu.
Introduction 1
Preparing Your Clamp Meter
Enabling the backlight
If viewing the display becomes difficult in low- light
conditions, press (on the U1192A/U1193A/U1194A
models) or (on the U1191A model) to activate the LCD
backlight.
Press / again to deactivate the LCD backlight.
To conserve battery life, a user-adjustable timer controls how long the
backlight stays on. The default timer period is 15 seconds.
U1190A Series User’s Guide 7
1 Introduction
WARNING
NOTE
Preparing Your Clamp Meter
Follow the steps below to change the timer period or
completely disable the backlight timer.
1 Press and hold while powering on the clamp meter to
enter the Setup menu.
2 Press again. The backlight (b #) timer period is the
second Setup item shown.
3 Press to make changes to the b # value.
Press or to change the timer period (from
b 01 to b 99 seconds) or to completely disable the
backlight timer function (boFF).
4 Press to save the changes, or press to discard
the changes and proceed to the next Setup item.
5 Cycle the clamp meter’s power to exit the Setup menu.
Enabling the flashlight
This feature is applicable for U1192A, U1193A, and U1194A
models only.
8 U1190A Series User’s Guide
If you are using the clamp meter in dark places, press and
hold for more than 1 second to activate the LED
flashlight for greater visibility on your test points. This is
not applicable to the U1191A model.
Press for more than 1 second to deactivate the LED
flashlight.
VISION ADVISORY CLAIM
It is advised that you do not look directly into the light source of the
LED flashlight. As with any source of bright light, prolonged
exposure can damage the eye.
To conserve battery life, a user-adjustable timer can be set to control how
long the flashlight stays on. This function is disabled by default.
Preparing Your Clamp Meter
WARNING
Follow the steps below to change the timer period or
completely disable the flashlight timer.
1 Press and hold while powering on the clamp meter to
enter the Setup menu.
2 Press twice. The f lashlight (t #) timer period is the
third Setup item shown.
3 Press to make changes to the t # value.
Press or to change the timer period (from
t 01 to t 99 seconds) or to completely disable the
flashlight timer function (toFF).
4 Press to save the changes, or press to discard
the changes and proceed to the next Setup item.
5 Cycle the clamp meter’s power to exit the Setup menu.
Alerts and warnings during measurement
Voltage alert
Introduction 1
U1190A Series User’s Guide 9
For your own safety, please do not ignore the voltage alert. When the
clamp meter cautions you with a voltage alert, you are advised to
take note of the existence of high voltage and pay closer attention
when performing measurements.
Your clamp meter provides a voltage alert for voltage
measurements. The clamp meter starts beeping periodically
once the measured voltage exceeds the alert value
(regardless of polarity) set.
Hazardous voltage indication
The clamp meter will also display the hazardous voltage ( )
symbol as an early precaution when the measured voltage is
equal to or greater than 30 V in all voltage measurement
modes.
1 Introduction
+
Preparing Your Clamp Meter
Power-on options
Some options can be selected only while you turn the clamp
meter on. These power- on options are listed in the table
below.
To select a power- on option, press and hold the specified
key in Table 1- 2 while turning the rotary switch from the
OFF position to any other position.
Tab l e 1 - 2 Power-on options
Key Description
Tests the LCD.
All annunciators are displayed in the LCD for 10
seconds. Cycle the clamp meter’s power to exit this
mode, or wait 10 seconds for the clamp meter to return
to normal operation.
Checks the firmware version.
The clamp meter’s firmware version will be shown on
the primary display. Cycle the clamp meter’s power to
exit this mode.
Enters the clamp meter’s Setup menu.
See the following topics for more information on each
respective Setup menu item.
• “Automatic Power-Off (APO)” on page 7
• “Enabling the backlight” on page 7
• “Enabling the flashlight” on page 8
• “Changing the continuity visual alert” on page 37
Cycle the clamp meter’s power to exit the Setup menu.
Enters the unit selection menu for temperature
measurements (U1194A only).
See “Changing the default temperature unit” on
page 46 for more information. Cycle the clamp meter’s
power to exit this menu.
10 U1190A Series User’s Guide
Your Clamp Meter in Brief
77.14 mm
77.14 mm
Dimensions
Front view
Introduction 1
Your Clamp Meter in Brief
U1190A Series User’s Guide 11
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