Kyoritsu 2012R Manual de usuario descargar pdf (Pagina 2)

4．INSTRUMENT LAYOUT

Clamp Sensor

：

Pick up current flowing through the conductor.

Barrier

：

It is a part providing protection against electrical shock

and ensuring the minimum required air and creepage

distances.

A Zero Adjust Button

：

Used for zero adjustment on DCA. Also used

to reset the display resding.

Data Hold Button

：

Freezes the display reading.

Function Selector Switch

：

Selects function. Also used to

power the

instrument on.

Range Selector Button

：

Selects measuring mode. When the

Ω range the defaults to the Resistance. Then, press this

switch to cycle through Resistance → Diode → Cotinuity →

Capacitor → Resistance. When the 60A, 120A range the

defaults to the AC. Then, press this switch to cycle through AC

→ DC → AC.

Test Lead Cap

：

Test leads can be used under the CAT.II and III

environments by at

taching a Protective cap as illustrated

below. Use of our Protective cap offers different lengths

suitable for the test environments.

CAUTION

● The Cap should be firmly attached to the Probes.

5．PREPARATIONS FOR MEASUREMENT

（1）Checking battery voltage

Set the Function Selector Switch to any position other than

the OFF position. If the marks on the display is clearly legible

without symbol "

" showing, battery voltage is OK.

If the display blanks or "

" is indicated, replace the

batteries according to section 8: Battery Replacement.

NOTE

● When the instrument is left powered on, the auto-power-save

function automatically shut the power off; The display blanks

even if the Function Selector Switch is set to a position other

than the OFF position in this state.

To power on the instrument, turn the Function Selector Switch

or press any Button. If the display still blanks, the batteries are

exhausted.

Replace the batteries.

（2） M

ake sure that the Function Selector Switch is set to the

appropriate range.

Also make sure that data hold function is not enabled. If

inappropriate range is selected, desired measurement

cannot be made.

（3） Permits the measurement by placing the

one test lead in the holster while confirming

the measurement value.

WARNING

● Verify proper operation on a known source before use or taking

action as a result of the indication of the instrument.

6-4 Diode Measurement

(1) Set the Function Selector Switch to "

(2) Press the

SEL

Button. "



" mark is shown on the display.

(3) Connect the test leads to the circuit under test.

The measured value appears on the display.

[ Forward-bias Diode Test ]

Connect the red test lead to the anode and the black test

lead to the cathode.

[ Reverse-bias Diode Test ]

Connect the red test lead to the cathode and the black test

lead to the anode.

Note:◇ Hold the cla

mp sensor in the holster, while making the

diode measurement

6-5 Continuity Measurement

(1) Set the Function Selector Switch to "

(2) Press the

SEL

Button. " " mark is shown on the display.

(3) Connect the test leads to the circuit under test.

The measured value appears on the display.

When the measurement value is lower than 35±25Ω, the

instrument beeps.

Note:◇ Hold the clamp sensor in the holster, while making the

continuity measurement

6-6 Capacitor Measurement

(1) Set the Function Selector Switch to "

(2) Press the

SEL

Button. "F" mark is shown on the display.

(3) Connect the test leads to the circuit under test.

The measured value appears on the display.

Note:◇ Hold the clamp sensor in the holster, while making the

capacitor measurement.

6-7 Frequency Measurement

DANGER

● In order to avoid possible shock hazard, never make

measurement on circuits with a maximum voltage difference

of 600V or greater between conductors (300V or greater

between a conductor and ground).

● Do not make measurement with the test leads connected

to the circuit under test. Never make measurement with the

battery compartment cover removed.

● Do not make current measurement with the t

est leads

connected to the circuit under test.

● Keep your fingers and hands behind the barrier during

measurement.

(1) Set the Function Selector Switch to "Hz."

(2) Measuring frequency of current:

Adjust one of the conductors to the center of the clamp

sensor's arrow.

Measured value is shown on the display.

Measuring frequency of voltage:

Connect the test leads to the circuit under

test. Measured

frequency is shown on the display.

Note:◇ Do not use both the clamp sensor and the test leads at

the same time, while making the frequency measurement.

◇ Hold the test leads in the holster, while making the frequency

measurement by using the clamp sensor.

◇ Hold the clamp sensor in the holster, while making the

frequency measurement by using the test leads.

7．OTHER FUNCTIONS

7-1 Auto-Power-Save Function

NOTE

● A small amount of current is consumed even in the power-save

state. Make sure to set the Function Selector Switch to the

OFF position when the instrument is not used.

This function helps to avoid unwanted exhaustion of the batteries

because of leaving the instrument powered on and extend battery

life.

The instrument automatically shifts to the power-save state about

15 minutes after the last F

unction Selector Switch or other switch

operation.

A minute before power-save mode the instrument beeps 5 times,

finally beeps longer and then shifts to the power-save mode.

To return to the normal state:

Press the

Button or the

SEL

Button to return from the

power-save mode state to the normal state.

Note:◇ Pressing the

Button or the

SEL

Button over 2 sec

to return from the power-save mode state, the function of

each button is also enabled.

(ex.) When the function is 60A and in the power-save

mode, pressing

SEL

Button over 2sec releases the

power-save mode and changes from initial “AC” mode to

“DC” mode.

To cancel the Auto-Power-Save Function

To cancel the Auto-Power-Save Function, turn the function

switch from OFF position to any other position with pressing

SEL

Button.

Note:◇ When the function switch is 60A or 120A, pressing A

ZERO ADJ Button over 2 sec enables to cancel the Auto-

Power-Save Function.

In this case, pressing A ZERO ADJ Button over 2 sec once

agin enables the Auto-Power-Save Function.

To enable the Auto-Power-Save Function once again

Turn the function switch to the OFF, and then to any position.

7-2 Data Hold Function

This is

a function to freeze a measured value on the display.

Press the

Button once to hold the current reading. In this

data hold state, the reading is held even if input varies. "

mark is shown on the LCD. To exit the data hold state, press the

Button again.

Note:◇ Data Hold Function is not effective while making

Continuity or Diode measurement.

◇ When the function is on the position where

SEL

Button or

A ZERO ADJ Button is effective, pressing

SEL

Button or

A ZERO ADJ Button cancels the held indication.

8．BATTERY REPLACEMENT

WARNING

● In order to avoid possible shock hazard, always disconnect

the test leads from the circuit under test and set the Function

Selector Switch to the OFF position before trying to replace the

batteries.

CAUTION

●Do not mix new and old batteries.

● Install batteries in the orientation as shown inside the battery

compartment, observing correct polarity.

When the battery voltage warning mark "

" is shown on the

top left corner of the LCD, replace the batteries. Note that the

display blanks and "

" mark is not shown if the batteries are

completely exhausted.

(1) Set the Function Selector Switch to "OFF."

(2) Remove the instrument from the holster.

(3) Loosen the battery-compartment-cover-fixing screw on the

lower back of the instrument.

(4) Replace the batteries with two new R03 (UM-4) 1.5V batteries.

(5) Put the battery compartment cover back in place and tighten

the screw.

[ How to storage

the clamp sensor and the test leads ]

6．HOW TO MAKE MEASUREMENT

6-1 Current Measurement

DANGER

● In order to avoid possible shock hazard, never make

measurement on circuits with a maximum voltage difference

of 600V or greater between conductors (300V or greater

between a conductor and ground).

● Do not make measurement with the test leads connected to

the circuit under test.

● Never make measurement with the battery compartment cover

removed.

● Keep your fingers and hands behind the b

arrier during

measurement.

● To avoid electrical shock by touching the equipment under test

or its surroundings, be sure to wear insulated protective gear.

CAUTION

● When handling the clamp sensor, exercise caution not to apply

excessive shocks or vibration to the sensor.

●Maximum measurable conductor size is 12mm in diameter.

Note: ◇ Make sure that the test leads are in the holster while

making current measurement.

◇

Instrument can show the value over 120A, but the safe and

proper measurement range is limited lower than 120A.

6-1-1 DC Current Measurement

(1) The Function Selector Switch to the "60A" or "120A" position.

("AC" marks are shown on the top of the display.)

(2) Press the

SEL

Button. " " mark is shown on the display.

(3) Press the A ZERO ADJ Button to set the reading of the

instrument to zero.

(Incorrect zero adjustment makes measurement errors.)

(4) Adjust one of the conductors to the center of the clamp

sensor's arrow.

( When the position of the conductor is not at the center of

the arrow, the error occurs.)

Measured value is shown on the display.

Note:◇ The dire

ction of current is plus(+) when the current

flows from the upside (A ZERO ADJ. Button side) to the

underside The direction is minus(-) when the current flows

from the underside to the upside.

◇ Minus "-" mark is shown at the left side of the value and

the bar graph while making minus current measurement.

◇ By changing the function switch 60A or 120A to the other

position, the AC/DC mode is r

eset to the default (AC

mode). To set the DC mode, press the

SEL

Button again.

◇ The zero adjustment is effective only for the current

measurement.

◇ After the zero adjustment the instrument operates as

follows.

(1) The bar graph disappears.

(2) The maximum counts is changed according to the

adjusted value.

(ex.)

The maximum count is 6039-100=5939, when

adjusted +100 counts to zero.

(3) “△”mark is shown on the display.

(4)

Pressing A ZERO ADJ. Button again or

SEL

Button,

changing the function switch releases zero adjustment

function when the zero adjustment is effective.

◇ Pressing the A ZERO ADJ button over 2 sec releases the

zero adjustment function.

6-1-2 AC Current Measurement

(1) Set the Function Selector Switch to "60A." or "120A".

" mark is shown on the top of the LCD.)

(2) Adjust one of the conductors to the center of the clamp

sensor's arrow.

( When the position of the conductor is not at the center of

the arrow, the error occurs.)

Measured value is shown on the display.

Note:◇ Unlike DC current measurement, zero adjustment is not

necessary. There is not polarity indication either.

6-2 Voltage Measurement

DANGER

● In order to avoid possible shock hazard, never make

measurement on circuits with a maximum voltage difference

of 600V or greater between conductors (300V or greater

between a conductor and ground).

● Do not make measurement with the battery compartment

cover removed.

● Keep your fingers and hands behind the barrier during

measurement.

Note:◇ Make sure that the clamp sensor is in the holster

while

making voltage measurement.

◇ I

nstrument may show the value over 600V, but the safe

and proper measurement range is limited lower than 600V.

6-2-1 DC Voltage Measurement

(1) Set the Function Selector Switch to "

" mark is shown on the LCD.)

(2) Short-circuit the tips of test leads to make the indication zero.

(3) Connect the red test lead to the positive (+) side of the circuit

under test and the black test lead to the negative (-) side.

Measured voltage value is shown on the display.

When the connection is reversed, "-" is shown on the display.

6-2-2 AC Voltage Measurement

(1) Set the Function Selector S

witch to " ".

" mark is shown on the LCD.）

(2) Connect the test leads to the circuit under test.

Measured voltage value is shown on the display.

Note:◇ The displayed value might be few digits instead of zero

even if shorting the test leads.

6-3 Resistance Measurement

DANGER

●Never make measurement on circuits that are live.

● Never make measurement with the battery compartment cover

removed.

● Keep your fingers and hands behind the barrier during

measurement.

(1) Set the Function Selector Switch to "

(2) Press the

SEL

Button and "Ω" mark is shown and " " mark

is not shown on the display (Resistance Measurement).

Immediately after setting the Function Selector Switch to

", is not necessary to operate the

SEL

Button.

(3) Check that the display shows "

". Short the test leads and

check that the display reads about zero.

(4) Connect the test leads to the circuit under test. Measured

resistance value is shown on the display.

Note:◇

When the test leads are shorted, the display may read a small

resistance value. This is the resistance of the test leads.

◇ If there is an open in either of the test leads, " " is

shown on the display.

◇ The capacitive factor of the tested circuit may cause the

fluctuation of the measurement value, while making the

resistance measurement of high value .

◇ Make sure that the clamp sensor is in the holster while

making resistance measurement.

Adjust Button

Holster

Barrier

Clamp Sensor

LCD Display

Test Lead

Barrier

Function Selector Switch

Data Hold

Button

Range Selector

Button

A Zero

Continuity

Capacitor

Diode

Resistance

Clamp Sensor

Cable

Test Lead Cap

････

Resistance

60A

120A

････

default setting

（

Button

）（

Button

）

Battery Voltage

AC / DC

Continuity

Data Hold

Bar Graph

Unit

Zero ADJ

Diode Test

Buzzer

Warning

Adjust a

conductor to

the center of

the arrow.

Correct

Incorrect

Conductor

Black Red

Forward-bias Diode Test

Test Lead

AnodeCathode

Red Black

Reverse-bias Diode Test

Test Lead

AnodeCathode

Prohibition

Battery

Compartment

Cover

Batteries

Screw

Wind the lead around the folder.

Test Leads

Clamp Sensor

Protective Cap

Exposed metal part

Uncapped condition for CAT.II environment

Capped condition for CAT.III environments

1 2

KEW MATE 2012R 1
Prohibition 2

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