Agilent Technologies U1211A Manuale utente

Agilent Technologies

Agilent U1211A, U1212A,

and U1213A Clamp Meter

Quick Start Guide

The following items are included with your clamp meter:

✔Standard test leads with 19 mm probes and 4 mm probes

✔Soft carrying case

✔Quick Start Guide

✔Certificate of Calibration

If any item is missing or damaged, contact your nearest Agilent Sales

Office.

For more detailed information, please refer to the Agilent U1211A, U1212A,

and U1213A Clamp Meter User’s and Service Guide on Agilent Website:

www.agilent.com/find/handheld-tools

U1211A U1212A U1213A

Quick Start Guide

Knowing Your Clamp Meter

Clamp jaw

Handle

Hand guard

Annunciator

Jaw

markings

Rotary

switch

Function

buttons

Hold/

Max Min

button

Red input

terminal

Black input

terminal

Front

panel

Quick Start Guide

Functions and Features

Rotary switch

Function buttons

[1] Duty cycle %function is only available for U1213A.

Measurements

and power off

functions

Actions Steps

Freeze measured value Press Hold/Max Min

•Record maximum, minimum, and

calculate true average

•Toggle between maximum, average, and

minimum

•Press Hold/Max Min > 1 second

•Press Hold/Max Min again

Toggle measurement type Press Shift/Peak

Toggle peak hold test Press Shift/Peak > 1 second

Enable frequency or duty cycle[1] on

secondary display

Press Hz/

Turn on backlight Press Hz/ > 1 second

Offset measured value Press DNull

Change measuring range manually Press Range/Auto

Turn on auto range Press Range/Auto > 1 second

Quick Start Guide

Annunciator Display

No. Annunciator Status

1 AUTO Indicates auto ranging

2 Zeroing mode

3 DH Data hold

4 MAX AVG MIN Dynamic recording mode on present reading. MAX: maximum

reading, MIN: minimum reading, AVG: average reading

5 Direct current or voltage

6 Alternating current or voltage

7 Capacitor measurement unit

8 Audible continuity indicator

9 A Current measurement unit

10 Low battery indicator when battery voltage drops below 6.0 V

11 V Voltage measurement unit

12 M k ΩResistance measurement unit and range

13 Diode measurement indicator

14 % Duty cycle

15 kHz Frequency measurement unit

16 Secondary display (for frequency measurement and

temperature unit)

17 Analog bar-graph with scale indicator

18 Auto power off enabled

19 Negative polarity

20 Primary display

Quick Start Guide

Input Terminals

[1] DC current measurement is only available for U1212A and

U1213A.

[2] Temperature function is only available for U1212A and U1213A.

WARNING

Ensure the terminal connections are correct for a particular

measurement before making any measurement. To avoid

damage to the device, do not exceed the input limit.

Measurement

functions

Input terminals Input limits

AC current

Clamp jaw 1000 Arms

DC current[1]

AC voltage

VCOM

CAT III 1000 Vrms

CAT IV 600 Vrms

DC voltage

Resistance

COM 1000 Vrms for

short circuit < 0.3 A

Capacitance

Diode

Temperature[2]

Common terminal for

all measurements

Voltage, resistance, diode,

capacitance, and

temperature[2] measurements

Quick Start Guide

Performing Current Measurement

WARNING

Ensure the test leads are disconnected from the input

terminals when measuring current with the clamp meter.

Conductor

Press

Read

1Set the rotary switch to ~A.

2Press Shift to switch between AC current, DC current (for U1212A and

U1213A only), and AC+DC current (for U1213A only) measurements.

3Press the handle to open the clamp jaw.

4Clamp around a conductor and ensure that the conductor fits the

markings on the jaw.

5Read the display. Press Hz to view the frequency indication on the

secondary display.

Quick Start Guide

CAUTIONCAUTION

Ensure that the clamp meter measures only one conductor

at a time. Measuring multiple conductors may cause

inaccuracy in measurement reading due to vector sum of

currents flowing in the conductors.

Correct Incorrect

Current

flow

Current

flow

Quick Start Guide

Performing Voltage Measurement

Press

Connect

1Set the rotary switch to ~V.

2Connect the red and black test leads to input terminals V (red) and

COM (black) respectively.

3Press Shift to switch between AC voltage, DC voltage, and AC+DC

voltage (for U1213A only) measurements.

4Probe the test points and read the display. Press Hz to view the

frequency indication on the secondary display.

Probe

and read

Quick Start Guide

Performing Resistance Measurement and

Continuity Test

Connect

Probe

and read

Audible

continuity

1Set the rotary switch to Ω.

2Connect the red and black test leads to input terminals Ω (red) and

COM (black) respectively.

3Probe the test points (by shunting the resistor) and read the display.

4To perform continuity test, press Shift once. The buzzer will sound

when the resistance is below 10.0 Ω.

Quick Start Guide

Performing Diode Measurement

Connect

Probe

and read

1Set the rotary switch to .

2Connect the red and black test leads to input terminals (red) and

COM (black) respectively.

3Probe the test points and read the display.

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