Center 110 User Manual

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Page 1

CONTENTS

TITLE

PAGE

SAFETY INFORMATION……..……………...….1

FEATURES………………………………..……....2

1.SPECIFICATIONS………………………..…….2

1-1 General information…………………...…2

1-2 Electrical Specifications……………. ..…5

2.PART S & CONTROLS……….………….…….8

2-1 Name of Parts and Positions…. ……….8 2-2 Operating Instruction…………………..

2-2-1 Scale Ranging…….………………. ..

2-2-2 DC Voltage Measurement..……..…..

2-2-3 AC Volt age Measurement..……..…..12 2-2-4 AC/DC Current Measurement..….…

2-2-5 Diode Test..…………………………..

2-2-6 Resistance Measurement…..……… 15 2-2-7 Continuity Measurement..…………..

2-2-8 Frequency Measurement..……… ....16

3.BATTER Y & FUSE REPLACEMENT……… 17 3-1 Battery Check & Replacement………...

3-2 FUSE Replacement………………...…..

4.MAINTENANCE……..…..…………………… 19

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Read First: Safety Information

․ Never use the meter if the meter or test leads look

damaged.

․ Be sure the test leads and switch are in the correct

position for the desired measu rement.

․ Never measure resistance or testing acoustic continuity

in a circuit when power is applied.

․ Never connect the probe to a voltage source when the

test leads are plugged into the 10 A input jack .

․ Never connect the probe to a voltage source when the

function are in

A or mA range.

․ Never apply more than rated voltage between any input

jack and earth ground.

․ Be careful when working with voltages above 60 V dc or

30 V ac rms. Such voltages pose a shock hazard.

․ Keep your fingers behind the finger guards on the test

probes when making measurements.

․ To avoid false readings, replace the battery immediately,

When symbol appears.

Symbols:

ReadSafetyInformationFirst  DangerousVoltageMayBePresent  Meterisprotectedthroughoutbydoubleinsulationor reinforcedinsulation. 

When servicing, use only specified replacement parts.

1. SPECIFICATIONS

1-1 General information

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Display:

 Digital: 4000 counts  Analog: 42 segments

Maintenance & Clearing:  Repairs or servicing not covered in this manual should only by

qualified personal.

 Periodically wipe the case with a dry cloth and detergent . Do not

use abrasives or solvents on this instruments.

Display Symbol Definition:

Sampling Rate:

Digital: 2 times/sec Analog: 20times/sec for Bargraph indication.

Over Range Indication: LCD will show “OL”.` Low Battery Indication:

The is displ aye d when the battery voltage drop below the proper operating range.

Battery type: 1.5V.SIZE AAA Batter Battery Li fe: 500hrs typical (alkaline Battery) Polarity: ”

” Indicates negative input.

Auto Power Off Time: 30 minutes Operating Temperature and Humidity:

0℃to 40℃(32℉to 104℉) below80%RH

Storage Temperature and Humidity:

-10℃to 60℃(14℉to 140℉) below70%RH

Low Battery Relative Reading Data Hold Continuity Beeper

Diode

AC Symbol

Manual Range

Bargraph Indication

DC Symbol

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Weight: Approx.220g(7.76oz) Dimensions(L×W×H):

150mm×72mm×35mm (5.9”×2.83”×1.38” )

Accessories:

Test leads, Spare fuse ( 0.5A/250V ),Batteries and Instruction manual.

1-2 Electrical Specifications

Accurace specificatio n:±([… %of reading]+ […number of least significant digits]) at 18℃to 28℃( 64℉to 82℉)≦80%RH

Diode Tester

Range Resolution Accuracy Test Current Test Voltage

Overload

protection

1mV 1%+ 2 <1mA <3.2V 600Vrms

Continuity beeper

Range Active Range Test Voltage Overload protection

under40

<1.5V 600Vrms

DC Voltage ( Auto Range)

Range Resolution Accuracy Input Impedance Overload Protection

400mV 0.1mV 0.5%+2

≒

200 MΩ

750Vrms

4V 1mV 0.5%+2

11M

750Vrms

40V 10mV 0.5%+2

10M

750Vrms

400V 100mV 0.5%+2

10M

750Vrms

600V 1V 0.8%+2

10M

750Vrms

AC Voltage ( Auto Range)

Accuracy

Range Resolution

45Hz~400Hz 400Hz~1KHz

Input

Impedance

Overload

Protection

400mV 0.1mV

1%+5

(45Hz~100Hz)

≒

200 MΩ

750Vrms

1mV 1%+4 1.5%+4

11M

750Vrms

40V 10mV 1%+4

1.2%+4

10M

750Vrms

400V 100mV 1%+4

1.2%+4

10M

750Vrms

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600V 1V 1%+4

1.2%+4

10M

750Vrms

DC Current (uA,mA,Auto Range)

Range Resolution Accuracy

Burden Voltage

Overload Protection

400uA 0.1uA 1%+2 <0.25V 0.5A / 250V Fast Blow Fuse

4000uA

1uA 1%+2 <1V 0.5A / 250V Fast Blow Fuse

40mA 10uA 1%+2 <0.25V 0.5A / 250V Fast Blow Fuse

400mA 100uA 1%+2 <1.5V 0.5A / 250V Fast Blow Fuse

10A 10mA 1.2%+2 0.35V

10A / 250V Fast Blow Fuse

AC Current(uA,mA,Auto Range)

Accuracy

Range Resolution

45Hz~500Hz 500Hz~1KHz

Burden Voltage

Overload Protection

400uA 0.1uA 1.3%+5 1.6%+5

<0.25Vrms 0.5A / 250 Vfast Blow Fuse

4000uA 1uA 1.3%+5 1.6%+5

<1Vrms 0.5A / 250 VFast Blow Fuse

40mA 10uA 1.3%+5 1.6%+5

<0.25Vrms 0.5A / 250 VFast Blow Fuse

400mA 100uA 1.3%+5 1.6%+5

<1.5Vrms 0.5A / 250 VFast Blow F us e

10A 10mA 1.5%+5 1.8%+5

<0.35Vrms 10A / 250V Fast Blow F us e

Ohms ( Auto Range)

Range Resolution Accuracy Test Voltage Overload Protectio n

400Ω 0.1Ω

0.75%+2 <1.5VDC 600Vrms

4KΩ 1Ω

0.75%+2 <1.5VDC 600Vrms

40KΩ 10Ω

0.75%+2 <1.5VDC 600Vrms

400KΩ 100Ω

0.75%+2 <1.5VDC 600Vrms

4MΩ 1KΩ

0.75%+2 <1.5VDC 600Vrms

40MΩ 10KΩ

1.2%+3 <1.5VDC 600Vrms

Frequency ( Auto Range)

Range Resolution Accuracy Sensitivity Overload Protection

4 KHz 1Hz 0.1%+1 <300mVpp 600V rms

40KHz 10Hz 0.1%+1 <300mVpp 600V rms

400KHz 100Hz 0.1%+1 <300mVpp 600V rms

4MHz 1KHz 0.1%+1 <3Vpp 600V rms

40MHZ 10KHz 0.1%+1 <3Vpp 600V rms

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2 3

4 5

uA mAHz

MIN

MAX

IEC 1010

POLLUTION DEGREE 2

F 0.5A 250V F 10A 250V

WARNING

600V CAT II

2.PARTS & CONTROLS

2-1 Name of Parts and Position:

← LCD Display :

Measured values, unit, function and decimal points symbols are displayed.

↑ Relative Button:

Press button to enter the relative mode . The Disp lay i s zeroe d , and the reading is stored as reference value for subsequent measurements. Press it again, the “△” annunciator blinking and stored

relative value will d isplay . Press and hold down button for 1 second to exit the relative mode.

→ Auto-range & Manual Range Button:

․ Press to select the Manual Range mode and the ⊙

annunciator turn on and The meter remains in the same range it was .

․In the Manual Range mode, each time you press button , the

range ( and the input range annunciate ) increases , and a new

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value is displayed.

․If the meter is in the highest range, the next range is change to the

lowest range. To exit the Manual Range mode and return to Auto Range mode, Press and hold down for 1 seconds, the AUTO annunciate turns back on.

↓ MAX/MIN recording button:

Press button to enter the maximum and minimum recording mode, select the proper range before using MAX/MIN to ensure that reading value will not exceed the measurement range. Press the button once to select MAX value. Press it again to select MIN value, and press again to select current value with ” MAX.MIN ” annunciator blinking. Press and hold down button for 1 second to exit the MAX MIN mode.

° AC/DC Current Select and

Ω Select Button:

․To select function AC or DC in current Ampere range.

․To select continuity measurements or Resistance measurement at

range.

± Function Selector Switch:

For power OFF and sel e ction of desired Function Range. ″ COM Measuring Connector:

To connect negative lead (black test lead ) for voltage, frequency, current, resistance, diode and continuity measurement.

≥ 10A Measuring Connector: To connect positive lead (red test lead)for current measurement below

10A.

× VΩ,μA, mA, Hz,

Measuring Connector:

To connect positive lead ( red test lead ) for voltage, diode, frequency, micro ampere, milliampere and continuity measurement.

Note:

To avoid blowing an input fuse, use the 10 A jack until you are sure that the current is less than 400mA. When Doing Current Measurement.

MAX

MIN

MAX

MIN

MAX

MIN

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∝ Tilt stand

2-2 Operating Instruction

2-2-1 Ranging

The meter defaults to autorange mode when you turn on the Meter. Manual ranging is available in V～, V , ohms , A～ , A ,

frequency. To return to a utorange, press for 1 second or turn the rotary switch.

2-2-2 DC Voltage Measurements

WARNING!

Maximum Input Voltage is 1000V DC, 750V AC. Do not attempt

to Take any voltage measurement that may exceed toavoid Electrical shock hazard and/or damage to this instrument

⊇ Connect red test lead to “ V ” jack and

black test lead to “ COM ” jack.

⊄ Set Range Switch to V range. ⊂ Connect the test leads IN PARALLEL to

the circuit being measured.

⊆ Read the Voltage value on LCD.

2-2-3 AC Voltage Measurements

WARNING!

Maximum Input Voltage is 1000V DC, 750V AC. Do not attempt to Take any voltage measurement that may exceed to avoid Electrical shock hazard and/or damage to this instrument.

⊇ Connect red test lead to “ V ”jack and black

test lead to “COM ”jack.

⊄ Set Range Switch to V

～

range.

⊂ Connect the test leads IN PA RALLEL to the

circuit being measured.

⊆ Read the Voltage value on LCD.

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uA . mA measurement

Amp

measurement

2-2-4 AC/DC Current Measurements

WARNING!

To avoid injury, do not attempt a current measurement if the open circuit voltage exceeds the rate voltage of the meter.

⊇ Connect red test lead to the “mA / uA ”jack for Current measurements

up to 400mA.( For measuring Current between 400mA to 10A , Connect red test lead to “ 10 A ” jack ) Connect black test lead to“ C OM ” jack.

⊄ Set Range selector Switch to desired A range and press DC/AC

button to select AC/DC function.

⊂ Cut the power to the circuit to be tested and Connect the instrument

IN SERIES with the circuit with the black test lead on the negative “ - ”side and the red lead on the positive “ + ”side being measured.

⊆ Apply power and read the ampere value on LCD.

2-2-5 Diode Tests

WARNING!

Before taking any in-circuit measurement ,remove power from the circuit being tested and discharge all capacitors in the circuit.

⊇ Connect red test lead to “

”jack and black test lead to

“COM ” jack.

⊄ Set Range selector Switch to “

” range.

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⊂ Connect the red test lead to the anode

side and black test lead to the cathode side of the diode being tested.

⊆ Read forward Voltage( V

) value on

LCD.

∈ If the polarity of test leads are reversed

with diode polarity ⊂, the digital reading show “ OL ”.This can be used for distinguishing anode and cathode terminal of a diode.

2-2-6 Resistance Measurements

WARNING!

Before taking any in-ci rcuit measureme nt , remove power fr om the circuit being tested and discharge all capacitors in the circuit.

⊇ Connect red test lead to “ Ω ”jack and

black test lead to “COM ”jack.

⊄ Set Range Switch to “ ” range

and press button to “Ω”function.

⊂ Connect test lead to the circuit being

measured and read the resistance value on LCD.

2-2-7 Continuity Measurements

WARNING!

Before taking any in-circuit measurement ,remove power from the circuit being tested and discharge all capacitors in the circuit.

⊇ Connect red test lead to “Ω”jack and black test l ead to “COM ” jack . ⊄ Set Range Switch to “

” range , by pressing button.

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⊂ Remove power from the circuit being tested and discharge all

capacitors.

⊆ Connect test lead to the circuit being measured. ∈ When the impedance between the test jack is lower tha n 4 0Ω,it will

activate a continuous beeper ( 2KHz).

Note: Continuity Test is available to check open/short of the circuit .

Open circuit Short circuit

2-2-8 Frequency Measurements

⊇ Connect red test lead to “Hz” jack and

black test lead to “COM ”jack.

⊄ Set Range Switch to “Hz” range . ⊂ Connect the test lead IN PARALLEL to the

circuit being measured.

⊆ Read the frequency value on LCD.

3.BATTERY & FUSE REPLACEMENT

WARNING!

To prevent electrical hazard or shock , turn off multimeter and disconnect test leads before removing back cover.

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3-1 Battery Check & Replacement

1. As battery power is not sufficient, LCD will display “ ”. Replacement of two new batteries type AAA 1.5V is Required.

2. Set Range Switch to “ OFF ” position .Use a screwdriver to re move the rear cover. Ta ke out the battery and replace them with two new batteries of type AAA1.5V.

3. Place back the rear cover and secure it with the original screw.

3-2 FUSE Replacement

1. Set Range Switch to “ OFF ” position. Use a screwdrive to remove the rear cover. Take out the malfunction fuse and replace it with a new fuse rated 0.5A / 250A ( or 10A / 250V ) of fast blow type.

2. Place back the rear cover and secure it with the original screw.

WARNING!

For safety , use exact replacement . Fuse 1 : F0.5A / 250V 5

∮

×20 mm Fast blow type

Fuse 2 : F10A / 250V 6.3

∮

×32 mm Fast blow type

screw

0.5Afuse

10Afuse

screw

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4.MAINTENANCE

WARNING!

To avoid electric shock, remove the test leads before opening the case, and close the case before using the meter. To prevent fire and possible arc-flash, use fuses with ratings shown on the back of the meter.

Caution!

To avoid contamination or static damage, do not touch the circuit board without proper static protection.