Keysight U1191A, U1194A, U1192A, U1193A Quick Start Manual

NOTE

Keysight U1190A Series
Handheld Clamp Meter

Quick Start Guide

Verify that you received the following items in the shipment of
your clamp meter:

✔ One pair of red and black test leads
✔ Two 1.5 V AAA alkaline batteries
✔ One K-type thermocouple (U1194A only)
✔ One soft carrying case
✔ Printed copies of the Certificate of Calibration (CoC) and

the U1190A Series Quick Start Guide (this manual)

If any item is missing or damaged, keep the shipping materials
and contact the nearest Keysight Sales Office.

The descriptions and instructions in this guide apply to the
U1191A, U1192A, U1193A, and U1194A handheld clamp
meters.

The model U1194A appears in all illustrations.
All related documents and software are available for download

at www.keysight.com/find/hhTechLib.

U1190A Series Handheld Clamp Meter

Mesh of
wires or
cables

1 Open the clamp jaw

slightly to reveal the
wire separator tip.

2 Separate the

desired wire or
cable by hooking it
in the clamp jaw.

3 Secure the

wire or cable
and read the
measurement.

Install the Batteries

Install the Batteries

Your clamp meter is powered by two

1.5 V AAA alkaline batteries (included
with the shipment).

1 Turn the clamp meter OFF and remove

the test leads from the terminals.

2 Loosen the screw on the battery cover

with a suitable Phillips screwdriver.

3 Remove the battery cover and observe

the polarity markings.

4 Insert the batteries and replace the

battery cover and screw.

Power ON the Clamp Meter

To po w e r O N y o u r c l a m p m e t e r,
turn the rotary switch from the
OFF position to any other posi
tion.

Using the Wire Separator and Hook

-

2 U1190A Series Quick Start Guide

U1190A Series Handheld Clamp Meter

Hold/MaxMin button

Function buttons

Rotary switch

Display screen

Input terminals

Front view

Clamp jaw

Jaw markings

Handle

Battery cover

Flashlight

Hand guard

Rear view

The Clamp Meter at a Glance

The Clamp Meter at a Glance

U1190A Series Quick Start Guide 3

U1190A Series Handheld Clamp Meter

NOTE

WARNING

Understanding the Rotary Switch

Understanding the Rotary Switch

Some rotary switch positions have a shifted function printed in

orange. Press to switch between the shifted and primary

function.

Legend

Functions shown
in the primary display

Off

AC A

DC A

Frequency
(current path)

AC V

Frequency
(voltage path)

DC V

Resistance

Continuity

Diode

Capacitance

Non-contact voltage
detector

U1194A U1193A U1192A U1191A

✔✔✔✔
✔✔✔✔
✔

✔✔✔

✔✔✔✔

✔✔✔

✔✔✔✔
✔✔✔✔
✔✔✔✔
✔✔✔✔
✔✔✔

✔✔✔

Temperature

DC μA

AC μA

Remove the test leads from the measuring source or
target before changing the rotary switch position.

4 U1190A Series Quick Start Guide

✔
✔
✔

U1190A Series Handheld Clamp Meter

3

4

Voltage source

AC

2

1

WARNING

Understanding the Function Buttons

Understanding the Function Buttons

Legend

[1]

The LED flashlight function is available for U1194A/U1193A/U1192A models
only.

Key response when pressed for:

Less than 1 second More than 1 second

Freezes the present reading
in the display.

Records the maximum,
minimum, or average value.

Switches between the
primary and shifted functions.

Turns the LCD backlight
on or off.

Turns the LED flashlight
on or off.

[1]

Sets the null/relative mode. -

Non-contact voltage
detector (Vsense)

If the presence of AC voltage is
sensed, the clamp meter’s beeper
will sound.

Press to change the Vsense
sensitivity from Hi.SE (high sensi­tivity) to Lo.SE (low sensitivity) and
vice versa.

-

U1190A Series Quick Start Guide 5

Voltage could still be
present even if there is no
alert indication. Never
touch live voltages or
conductors without the
necessary insulation
protection.

U1190A Series Handheld Clamp Meter

3

1

2

4

5

Conductor

WARNING

CAUTIONCAUTION

Current
flow

Current
flow

Correct Incorrect

✔ ✘

Performing Measurements

Performing Measurements

Current measurement

Press the handle to open the
clamp jaw. Clamp around a con
ductor and ensure that the con­ductor fits the markings on the
clamp jaw.

Press to cycle between AC
current, DC current, or to read
the frequency of the AC current.

-

Ensure that the test leads
are disconnected from the
input terminals when
measuring current with the
clamp meter’s jaw.

Ensure that the clamp meter measures only one conductor
at a time. Measuring multiple conductors may cause inac­curacy in measurement reading due to the vector sum of
currents flowing in the conductors.

6 U1190A Series Quick Start Guide

U1190A Series Handheld Clamp Meter

2

4

AC

Voltage source

1

3

DC

3

Voltage source

1

2

Performing Measurements

AC voltage measurement

Set up your clamp meter to mea­sure AC voltage as shown. Probe
the test points and read the dis
play.

Press to measure the fre­quency of the AC voltage source.

-

DC voltage measurement

Set up your clamp meter to mea­sure DC voltage as shown. Probe
the test points and read the dis
play.

-

U1190A Series Quick Start Guide 7

U1190A Series Handheld Clamp Meter

3

Resistor

1

2

CAUTION

4

1

3

CLOSED

OPEN

2

NOTE

Performing Measurements

Resistance measurement

Set up your clamp meter to mea­sure resistance as shown. Probe
the test points and read the dis

-

play.

To avoid possible damage to
your clamp meter or to the
equipment under test, dis­connect the circuit power
and discharge all high-volt­age capacitors before mea­suring resistance or testing
for continuity.

Continuity test

Set up your clamp meter to test
for continuity as shown. Press

to switch to the continuity
test function ( is shown on the
display).

The beeper will sound and the
backlight will flash when the
circuit-under-test is shorted.

8 U1190A Series Quick Start Guide

U1190A Series Handheld Clamp Meter

3

Forward-bias
diode

1

2

NOTE

2

4

Capacitor

1

3

CAUTION

Performing Measurements

Diode test

Set up your clamp meter to test
diodes as shown. Probe the test
points and read the display.

This test sends a current
through a semiconductor
junction, and then measures
the junction’s voltage drop. A
good diode allows current to
flow in one direction only.

Capacitance measurement

Set up your clamp meter to mea­sure capacitance as shown. Press

to switch to the capacitance

measurement function.

To avoid possible damage to
the clamp meter or to the
equipment under test, dis­connect circuit power and
discharge all high-voltage
capacitors before measur­ing capacitance. Use the
DC V function to confirm
that the capacitor is fully
discharged.

U1190A Series Quick Start Guide 9

U1190A Series Handheld Clamp Meter

2

4

1

3

K-type
thermocouple
probe

Heat source

WARNING

AC

2

4

1

Voltage source

DC

Voltage source

LOAD

3

LOAD

WARNING

Performing Measurements

Temperature
measurement (U1194A
only)

The clamp meter uses a
type-K thermocouple probe
for measuring temperature.
Press
temperature measurement
function.

Do not connect the
thermocouple to
electrically live circuits.
Doing so will potentially
cause fire or electric
shock.

to switch to the

Current measurement
up to μA (U1194A only)

Set up your clamp meter to
measure low current as
shown. Press
the current measurement
function.

Always use the proper
function, range, and
terminals for current
measurements. Use the
clamp jaw for currents
above 600

to switch to

μA.

10 U1190A Series Quick Start Guide

Contacting Keysight

CAUTIONCAUTION

WARNING

CAT III

600 V

CAT IV

300 V

To obtain service, warranty, or technical assistance, contact us at the fol­lowing phone numbers:

• United States Call Center: 800-829-4444

• Canada Call Center: 877-894-4414

• China Call Center: 800-810-0189

• Europe Call Center: 31-20-547-2111

• Japan Call Center: (81) 426-56-7832

For other countries, contact your country’s Keysight support organization.
A list of contact information for other countries is available on the Keysight
Web site:

www.keysight.com/find/assist

Safety Notices Safety Information

A CAUTION notice denotes
a hazard. It calls attention
to an operating procedure,
practice, or the like 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 CAU-
TION 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
like 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.

This meter is safety-certified in compliance
with EN 61010-1 (IEC 61010-1:2001 and
IEC/EN 61010-2-032:2002) for a CAT III 600
V and CAT IV 300 V pollution degree 2 envi­ronment. EMC is designed in compliance
with IEC 61326-1:2005/EN 61326-1:2006.
Use with standard or compatible test
probes.

Safety Symbols

Earth (ground) terminal

Equipment protected
throughout by double insula­tion or reinforced insulation

Caution, risk of danger (refer
to the instrument manual for
specific Warning or Caution
information)

Application around and
removal from HAZARDOUS
LIVE conductors is permitted

Category III 600 V
overvoltage protection

For further safety information details, refer to the

Keysight U1190A Series Handheld Clamp Meter User’s Guide.

Category IV 300 V
overvoltage protection

This information is subject to change without notice.

© Keysight Technologies 2011, 2015

Edition 2, January 2015

*U1191-90001*

U1191-90001

www.keysight.com