Keysight U1191A Bedienungsanleitung

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.

NOTE

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.

Quick Start Guide

Keysight U1190A Series

Handheld Clamp Meter

U1190A Series Handheld Clamp Meter

Install the Batteries

2 U1190A Series Quick Start Guide

Install the Batteries

Your clamp meter is powered by two

1.5 V AAA alkaline batteries (included

with the shipment).

1Turn the clamp meter OFF and remove

the test leads from the terminals.

2Loosen the screw on the battery cover

with a suitable Phillips screwdriver.

3Remove the battery cover and observe

the polarity markings.

4Insert the batteries and replace the

battery cover and screw.

Power ON the Clamp Meter

To power ON your clamp meter,

turn the rotary switch from the

OFF position to any other posi-

tion.

Using the Wire Separator and Hook

Mesh of

wires or

cables

1Open the clamp jaw

slightly to reveal the

wire separator tip.

2Separate the

desired wire or

cable by hooking it

in the clamp jaw.

3Secure the

wire or cable

and read the

measurement.

U1190A Series Handheld Clamp Meter

The Clamp Meter at a Glance

U1190A Series Quick Start Guide 3

The Clamp Meter at a Glance

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

U1190A Series Handheld Clamp Meter

Understanding the Rotary Switch

4 U1190A Series Quick Start Guide

Understanding the Rotary Switch

NOTE

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 U1194A U1193A U1192A U1191A

Off ✔✔✔✔

AC A ✔✔✔✔

DC A ✔

Frequency

(current path) ✔✔✔

AC V ✔✔✔✔

Frequency

(voltage path) ✔✔✔

DC V ✔✔✔✔

Resistance ✔✔✔✔

Continuity ✔✔✔✔

Diode ✔✔✔✔

Capacitance ✔✔✔

Non-contact voltage

detector ✔✔✔

Temperature ✔

DC μA✔

AC μA✔

WARNING

Remove the test leads from the measuring source or

target before changing the rotary switch position.

U1190A Series Handheld Clamp Meter

Understanding the Function Buttons

U1190A Series Quick Start Guide 5

Understanding the Function Buttons

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 sensi-

tivity) to Lo.SE (low sensitivity) and

vice versa.

Legend 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]

[1] The LED flashlight function is available for U1194A/U1193A/U1192A models

only.

Sets the null/relative mode. -

Voltage could still be

present even if there is no

alert indication. Never

touch live voltages or

conductors without the

necessary insulation

protection.

Voltage source

WARNING

U1190A Series Handheld Clamp Meter

Performing Measurements

6 U1190A Series Quick Start Guide

Performing Measurements

Current measurement

Press the handle to open the

clamp jaw. Clamp around a con-

ductor and ensure that the con-

ductor 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.

Conductor

WARNING

CAUTIONCAUTION

Ensure that the clamp meter measures only one conductor

at a time. Measuring multiple conductors may cause inac-

curacy in measurement reading due to the vector sum of

currents flowing in the conductors.

Current

flow

Current

flow

Correct Incorrect

✔✘

U1190A Series Handheld Clamp Meter

Performing Measurements

U1190A Series Quick Start Guide 7

AC voltage measurement

Set up your clamp meter to mea-

sure AC voltage as shown. Probe

the test points and read the dis-

play.

Press to measure the fre-

quency of the AC voltage source.

DC voltage measurement

Set up your clamp meter to mea-

sure DC voltage as shown. Probe

the test points and read the dis-

play.

Voltage source

U1190A Series Handheld Clamp Meter

Performing Measurements

8 U1190A Series Quick Start Guide

Resistance measurement

Set up your clamp meter to mea-

sure resistance as shown. Probe

the test points and read the dis-

play.

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).

To avoid possible damage to

your clamp meter or to the

equipment under test, dis-

connect the circuit power

and discharge all high-volt-

age capacitors before mea-

suring resistance or testing

for continuity.

The beeper will sound and the

backlight will flash when the

circuit-under-test is shorted.

Resistor

CAUTION

CLOSED

OPEN

NOTE

U1190A Series Handheld Clamp Meter

Performing Measurements

U1190A Series Quick Start Guide 9

Diode test

Set up your clamp meter to test

diodes as shown. Probe the test

points and read the display.

Capacitance measurement

Set up your clamp meter to mea-

sure capacitance as shown. Press

to switch to the capacitance

measurement function.

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.

To avoid possible damage to

the clamp meter or to the

equipment under test, dis-

connect circuit power and

discharge all high-voltage

capacitors before measur-

ing capacitance. Use the

DC V function to confirm

that the capacitor is fully

discharged.

Forward-bias

diode

NOTE

Capacitor

CAUTION

U1190A Series Handheld Clamp Meter

Performing Measurements

10 U1190A Series Quick Start Guide

Temperature

measurement (U1194A

only)

The clamp meter uses a

type-K thermocouple probe

for measuring temperature.

Press to switch to the

temperature measurement

function.

Current measurement

up to μA (U1194A only)

Set up your clamp meter to

measure low current as

shown. Press to switch to

the current measurement

function.

Do not connect the

thermocouple to

electrically live circuits.

Doing so will potentially

cause fire or electric

shock.

Always use the proper

function, range, and

terminals for current

measurements. Use the

clamp jaw for currents

above 600 μA.

K-type

thermocouple

probe

Heat source

WARNING

Voltage source

LOAD

WARNING

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