Kusam-meco 405 User manual

DIGITAL

MULTIMETER

405

Nearly every electrical engineer has a hand held

digital multimeter (DMM). We sometimes take them

for granted, until we damage them or “burn them out”

if you incorrectly connect your DMM to a circuit, or if

you have the DMM on wrong setting, you damage the

meter and possibly hurt yourself. You can also get into

trouble if you try to measure the voltage across a

charged capacitor.

DMM users frequently burn their meters by trying

to measure current the same way as they measure

voltage, Remember, you measure voltage across a

circuit, and current through a circuit. When you use

the current input, your DMM becomes a lower

impedance circuit element. If you accidentally

connect this low impedance path across your circuit,

you’ll effectively short-circuit it. You can, therefore

send high current through your meter and severely

damage it. Unless the meter has a fused input, you

can even get an explosion or fire.

Even if you correctly insert your DMM into the

circuit, you can still damage your meter. Don’t try to

measure current in excess of your meter’s capacity.

Handheld DMMs usually have a maximum current

rating of 10Aor 20A.

If you are measuring current in industrial

environment, you can easily exceed those ratings.

The best way to avoid damage is to use a clamp

meter or to connect a clamp attachment to your DMM.

To prevent excess current from flowing through

your meter, always disconnect the test leads from the

circuit under test whenever you change DMM

functions, Set your meter to the correct function, say

current and its highest range for the setting, say 10A.

Next, connect the test leads before you apply power

to the circuit. To be safe, start by setting your meter to

its highest range first.

TAKE MEASUREMENT CAREFULLY AND YOU’LL

SPARE YOUR METER AND YOURSELF, SOME PAIN

Table of Contents

Title Page

Overview

Unpacking Inspection

Features

General Specification

Electrical Specification

DC Voltage

AC Voltage

AC Current

DC Current

Resistance

Frequency

Duty Cycle

Logic Test

Continuity & Diode Test

Rules For Safe Operation

International Electrical Symbols

The Multimeter Structure

Functional Buttons

Display symbols

Measurement Operation

A. DC Voltage Measurement

B. AC Voltage Measurement

C. AC Current Measurement

D. DC Current Measurement

E. Measuring Resistance

F. Measuring Frequency

G. Duty Cycle Measurement

H. Logic Testing

I. Diode Test & Continuity

Maintenance

A. Replacing the Battery & fuse

Test Certificate

Warranty

Overview

Warning

To avoid electric shock or personal injury, read

the “Safety Information” and “Rules for Safe

Operation”carefully before using the Meter.

Digital Multimeter Model - 405 (hereafter referred to

as “the Meter”) is a 4½ digits TRMS Multimeter with

steady operations, and highly reliable hand-held

measuring instrument having different measurement

positions. The Multimeter not only can measure

AC/DC Voltage, AC/DC Current, Resistance,

Frequency, Diode Test, Logic Test, but also has

Data Hold, Full Icon Display.

Terms in this manual

Warning : Identifies conditions and actions

that could result in serious injury

or even death to the user.

Caution : Identifies conditions and actions

that could cause damage or

malfunction instrument.

Unpacking Inspection

Open the package case and take out the Multimeter.

Check the following items carefully to see any

missing or damaged part :

Item Description Qty.

1 English Operating Manual 1 piece

2 Test Lead 1 pair

In the event you find any Part missing or damaged,

please contact your dealer immediately.

FEATURES :

nLow power consumption CMOS double

integration, A/D transform integrated circuit,

Auto Zero Calibration, Auto Polarity display,

Data Hold, Low Battery & Over range

indication.

nDisplay : 4½ digit (19999 Counts) with digit

height 17mm and function/units sign

annunciators.

nSelected Range displayed on LCD.

nHigh Accuracy - Digital Reading.

nInstant Continuity Buzzer.

nOverload Protection in all Ranges.

nRecessed Safety Designed Input Jacks.

n“ DATA - HOLD ” switch freezes reading.

nCE Approved, GS-approved.

nIEC61010 overload category II

GENERAL SPECIFICATIONS :

Display : 4½ digit LCD.

Maximum reading 19999

with Function and unit sign

annunciators.

Digit Size : 17mm(H)

Polarity : Automatic, (-) negative

polarity indication.

Overrange : ‘1’ most significant digit.

indication

Low Battery : The “ ” sign is displayed

Indication when the battery voltage

drops below the operating

Voltage.

Auto Power : Meter automatically shuts

Off down after approx.

45.minutes of inactivity.

Measurement rate : 2.5 times per Second, nominal

Operating : 0°C to + 50°C, <70% R.H.

environment

Storage : -20°C to 60°C, 0 to 80% RH

temperature with battery removed.

Power : Single 9 V Battery.

Power : 14mW Typical.

Consumption

Dimension : 189mm (H) X 87mm(W) X

37mm(D)

Weight : Approx. (330 grams)

including battery.

Accessories : Test Leads, Carrying Case,

User Manual, Battery,

Tilt stand, Protective Holster

- +

ELECTRICAL SPECIFICATION :

AC VOLTAGE 50Hz~500Hz (TRUE RMS)

Input Impedance : 10MW

Overload Protection : 500V DC or 350Vrms

on 200mV range, 1000V DC or 750Vrms

on all other range

Accuracy

±(1.0% rdg +10 dgts)

±(2.0% rdg + 20 dgts)

Resolution

10 mV

100 mV

1 mV

100 mV

10 mV

Range

200 mV

2 V

20 V

750 V

200 V

Input Impedance : 10MW

Overload Protection : 500V DC/350Vrms

on 200mV range, 1000V DC/750V rms

on all other ranges

DC VOLTAGE

Accuracy

±(0.05% rdg + 3dgts)

Resolution

10 mV

100 mV

1 mV

100 mV

10 mV

Range

200 mV

2 V

20 V

1000 V

200 V

Input Impedance : 10MW

Overload Protection : 500V DC or 350Vrms

on 200mV range 1000V DC or 750Vrms

on all other range

AC VOLTAGE 500Hz to 2KHz (TRUE RMS)

Accuracy

Unspecifled

±(2.0% rdg + 20 dgts)

Resolution

10 mV

100 mV

1 mV

100 mV

10 mV

Range

200 mV

2 V

20 V

750 V

200 V

AC CURRENT (TRUE RMS)

Burden Voltage : 300mV for 200mA, 2mA, 20mA

600mV for 200mA & 800mV for 20A.

Overload Protection : 500mA/600V fuse on mA

inputs (fast blow ceramic fuse). * 20A/600V fuse on

20A inputs (fast blow ceramic fuse).

20A for 30 seconds maximum.

Accuracy

±(0.8% rdg + 10 dgts)

±(2.5% rdg + 10 dgts)

Resolution

10 nA

1 mA

10 mA

100 nA

1 mA

Range

200 mA

20 mA

20 A*

2 mA

200 mA

RESISTANCE

Overload Protection : 500V DC or AC rms

Burden Voltage : 3.3V DC

Accuracy

±(0.25% rdg + 10 dgts)

±(0.15% rdg + 3 dgts)

±(1.0% rdg + 10 dgts)

Range

200 W

2 KW

20 KW

200KW

2 MW

20 MW

Resolution

0.01 W

0.1 W

1 W

10 W

100 W

1 KW

Burden Voltage : 300mV for 200mA, 2mA, 20mA

600mV for 200mA & 800mV for 20A.

Overload Protection : 500mA/600V fuse on mA

inputs (fast blow ceramic fuse). * 20A/600V fuse on

20A inputs (fast blow ceramic fuse).

20A for 30 seconds maximum.

DC CURRENT

Accuracy

±(0.5% rdg + 5 dgts)

±(2.0% rdg + 10 dgts)

Resolution

10 nA

1 mA

10 mA

100 nA

1 mA

Range

200 mA

20 mA

20 A*

2 mA

200 mA

DUTY CYCLE

AccuracyPulse Width

> 10msec. ±(2.0% rdg +10dgts)

Range

0 - 90.0%

Resol.

0.1%

Overload Protection : 500V DC or AC rms

Frequency Range : 20 Hz to 20 KHz

FREQUENCY

Sensitivity : 50mV rms (Sine Wave), 400mV rms

at > 30% and < 70% duty cycle

Input Frequency : More than 10 Hz at pulse width > 2msec.

Overload Protection : 500V DC or AC rms

Range

2 KHz

20 KHz

200KHz

Accuracy Input Imped.

±(0.5% rdg+3dgts) 10MW// 10pF

Resolution

0.1 Hz

1 Hz

10 Hz

DIODE TEST

Open Circuit

Volts

Resol.

±(0.5% rdg + 1dgt) 3.3V DC Typical

1.0mA

Range

2 V

Accuracy Test

Current

0.1mV

Overload Protection : 500V DC or AC rms

CONTINUITY TEST

Open Circuit

Volts

3.3V DC Typical

Response

Time

Approx. 500ms

Range

2 V

Audible

Indication

Less than 150W

Overload Protection : 500V DC or AC rms

Test Voltage : 5V DC

Duty Cycle : >20% and <80%

Indication : 40msec beep at logic Hi

Overload Protection : 500V DC or AC rms

Frequency Response : 20MHz

LOGIC TEST

Threshold Pulse

Width(min)

Logic Hi Logic Low

2.8V±0.8V 0.8V±0.5V 25ns

Pulse Rep

(max)

1Mpps

Pulse Rise

(max)

10msec

Rules For Safe Operation (1)

Warning

To avoid possible electric shock or personal

injury, and to avoid possible damage to the

Meter or to the equipment under test, adhere to

the following rules :

nBefore using the Meter inspect the case. Do not

use the Meter if it is damaged or the case (or

part of the case) is removed. Look for cracks or

missing plastic. Pay attention to the insulation

around the connectors.

nInspect the test leads for damaged insulation or

exposed metal. Check the test leads for

Continuity. Replace damaged test leads with

identical electrical Specifications before using

the Meter.

nDo not apply more than the rated voltage, as

marked on the Meter, between the terminals or

between any terminal and grounding.

nThe rotary switch should be placed in the right

position and no any changeover of range shall

be made while measurement is conducted to

prevent damage of the Meter.

nWhen measurement is taken at an effective

voltage over 60V in DC or 30V rms in AC,

special care should be taken for there is danger

of electric shock.

nUse the proper terminals, function, and range

for your measurements.

nDo not use or store the Meter in an environment

of high temperature, humidity, explosive,

inflammable and strong magnetic field. The

performance of the Meter may deteriorate after

the meter is dampened.

nWhen using the test leads, keep your fingers

behind the finger guards.

nDisconnect circuit power and discharge all high

-voltage capacitors before testing resistance,

continuity, diodes, or current.

nReplace the battery as soon as the battery

indicator appears. With a low battery, the

Meter might produce false readings that can

lead to electric shock and personal injury.

nTurn the Meter power off when it is not in use

and take out the battery when not using for a

long time.

nConstantly check the battery as it may leak when

it has not been used for some time, replace the

battery as soon as leaking appears. A leaking

battery will damage the Meter.

- +

International Electrical Symbols

- +

AC (Alternating Current).

DC (Direct Current).

Both DC & AC.

Grounding.

Double Insulated.

Deficiency of Built-In Battery.

Continuity Test.

Diode.

Fuse.

Warning ! Refer to the Operating Manual.

Logic test

Caution ! Risk of Electric Shock.

Rules For Safe Operation (2)

1) LCD DISPLAY :

A 4½ digit display (maximum reading 19999)

indicates measured values, and features

symbols indicating function, Low Battery,

Continuity, Diode, Logic.

2) FUNCTION SELECTOR :

To Select ACV, DCV, ACA, DCA, Resistance,

Frequency, Diode, Continuity & Logic Test.

3) INPUT JACKS (VW,mA,Aand COM) :

Test leads are inserted into these jacks for

Voltage, Resistance, Current measurements,

Continuity & Diode Checks.

4) PROTECTIVE HOLSTER :

Prevents the instrument from damage.

The Multimeter Structure (see figure 1)

( Figure 1)

1000V

750V

MAX

200mA MAX

FUSED

20A MAX

FUSED

CAT. II

405

MULTIMETER

20A

mA mA

COM

VWHz

POWER

AUTO POWER OFF

TRUE RMS

DATA

HOLD

TUV SAFETY APPROVED TO IEC1010

20m

20A

20m

20A

200m

20M

200k

20k

200

20k

200k

200m

20 200 750

LOGIC

200

1000

DUTY%

1.9999

LOGIC

Functional Buttons

Below table indicates the functional button operations

Buttons

POWER

(Black Button)

Operation Performed

Switch the Meter on and off.

nPress the POWER button to

switch on the Meter.

nPress the POWER button to

turn off the Meter.

DATA-HOLD

(Black Button)

nPress HOLD Button to hold the

reading on the display.

nPress HOLD button again to

exit hold mode.

Display Symbols (see figure 2)

( Figure 2)

Symbol

No.

Meaning

Dangerous Voltages.

The battery is low.

Warning : To avoid false readings,

which could lead to possible electric

shock or personal injury, replace the

battery as soon as the battery

indicator appears.

- +

3Indicator for AC voltage or current, The

displayed value is the mean value.

Indicates negative reading.

Test of diode.

Data Hold is active.

The continuity buzzer is on.

A : Amperes (amps). The unit of current.

V : Volts. The unit of voltage.

Hz : The unit of frequency.

% : The unit of Duty cycle.

W, kW,

12 W: Ohm. The unit of resistance.

KW: kilohm. 1 x 10 ohms.

MW: Mega Ohm 1 x 10 ohms.

: The symbol of logic Hi

: The symbol of logic Low

1.9.9.9.9

11 12

The DC Voltage ranges are :200mV, 2V, 20V, 200V,

1000V.

To measure DC voltage, connect the Meter as

follows :

1) Insert the red test lead into the VWinput terminal

and the black test lead into the COM input

terminal

2) Set the rotary switch to an appropriate

measurement position in V range.

3) Connect the test leads across with the

object being measured.

The measured value is shown on the display.

nIf the value of voltage to be measured is

unknown, use the maximum measurement

position (1000V) and reduce the range step by

step until a satisfactory reading is obtained.

nThe LCD displays “1” indicating the existing

selected range is overloaded, it is required to

select a higher range in order to obtain a correct

reading.

nIn each range, the Meter has an input impedance

of approx. 10MW. This loading effect can cause

measurement errors in high impedance circuits.

If the circuit impedance is less than or equal to

10kW, the error is negligible (0.1% or less).

nWhen DC voltage measurement has been

completed, disconnect the connection between

the testing leads and the circuit under test.

Caution :

- +

( Figure 3 )

1000V

750V

MAX

200mA MAX

FUSED

20A MAX

FUSED

CAT. II

405

MULTIMETER

20A

mA mA

COM

VWHz

POWER

AUTO POWER OFF

TRUE RMS

DATA

HOLD

TUV SAFETY APPROVED TO IEC1010

20m

20A

20m

20A

200m

20M

200k

20k

200

20k

200k

200m

20 200 750

LOGIC

200

1000

DUTY%

1.9999

LOGIC

! !

...

RedBlack

nMake sure the Low Battery display is not

on, otherwise false readings may be provided.

nPay extra attention to the symbol which is

located besides the input terminals of the Meter

before carrying out measurement.

A) DC voltage measurement (see figure 3)

Warning

Measurement Operation

To avoid harms to you or damages to the Meter

from electric shock, please do not attempt to

measure voltages higher than 1000V or 750V rms

although readings may be obtained.

1313

Never attempt an in - circuit current measurement

where the open circuit voltage between terminals and

Warning : (figure 5)

RedBlack

1000V

750V

MAX

200mA MAX

FUSED

20A MAX

FUSED

CAT. II

405

MULTIMETER

20A

mA mA

COM

VWHz

POWER

AUTO POWER OFF

TRUE RMS

DATA

HOLD

TUV SAFETY APPROVED TO IEC1010

20m

20A

20m

20A

200m

20M

200k

20k

200

20k

200k

200m

20 200 750

LOGIC

200

1000

DUTY%

1.9999

LOGIC

! !

...

C) AC Current Measurement (see figure 5)

nIf the value of voltage to be measured is

unknown, use the maximum measurement

position (750V) and reduce the range step by

step until a satisfactory reading is obtained.

nThe LCD displays “ 1 “ indicating the existing

selected range is overloaded, it is required to

select a higher range in order to obtain a

correct Reading.

nWhen AC Voltage measurement has been

completed, disconnect the connection between

the testing leads and the circuit under test.

Caution :

Warning :

To avoid harm to you or damages to the Meter

from electric shock, please do not attempt to

measure voltages higher than 1000V or 750V

rms although readings may be obtained.

The AC Voltage measurement has 5 measurement

positions on the rotary switch : 200mV, 2V, 20V,

200V and 750V

To measure AC Voltage, connect the Meter as

follows :

1) Insert the red test lead into the VWterminal

and the black test lead into the COM terminal.

2) Set the rotary switch to an appropriate

measurement position in V ~ range.

3) Connect the test leads across with the object

being measured.

The measured value is shown on the display,

!( figure 4)

RedBlack

1000V

750V

MAX

200mA MAX

FUSED

20A MAX

FUSED

CAT. II

405

MULTIMETER

20A

mA mA

COM

VWHz

POWER

AUTO POWER OFF

TRUE RMS

DATA

HOLD

TUV SAFETY APPROVED TO IEC1010

20m

20A

20m

20A

200m

20M

200k

20k

200

20k

200k

200m

20 200 750

LOGIC

200

1000

DUTY%

9.1999

LOGIC

! !

...

B) AC Voltage Measurement (see figure 4)

Table of contents

Other Kusam-meco Multimeter manuals

Kusam-meco

Kusam-meco KM 839 User manual

Kusam-meco

Kusam-meco KM 807s User manual

Kusam-meco

Kusam-meco KM 822sEX User manual

Kusam-meco

Kusam-meco KM 255 User manual

Kusam-meco

Kusam-meco KM 629 User manual

Kusam-meco

Kusam-meco KM 656 User manual

Kusam-meco

Kusam-meco KM 2777 User manual

Kusam-meco

Kusam-meco KM-DMM-41 Installation manual

Kusam-meco

Kusam-meco KM 6030 User manual

Kusam-meco

Kusam-meco 2754A User manual

Kusam-meco

Kusam-meco KM 60-T User manual

Kusam-meco

Kusam-meco 2772 User manual

Kusam-meco

Kusam-meco KM 877 User manual

Kusam-meco

Kusam-meco 801-L User manual

Kusam-meco

Kusam-meco 306 User manual

Kusam-meco

Kusam-meco KM 887 Installation manual

Kusam-meco

Kusam-meco KM 525 User manual

Kusam-meco

Kusam-meco M3511A User manual

Kusam-meco

Kusam-meco KM 235 User manual

Kusam-meco

Kusam-meco KM-459 User manual

Kusam-meco

Kusam-meco KM 829 User manual

Kusam-meco

Kusam-meco KM 857 User manual

Kusam-meco

Kusam-meco KM 520B User manual

Kusam-meco

Kusam-meco 603 User manual

Popular Multimeter manuals by other brands

Agilent Technologies

Agilent Technologies 34420A user guide

Fluke

Fluke 83 user manual

Hameg

Hameg HM 8012 manual

Mastech

Mastech MY70 Operation manual

Steren

Steren MUL-300 user manual

Somogyi Elektronic

Somogyi Elektronic home SMA 92 instruction manual

Gossen MetraWatt

Gossen MetraWatt METRAmax 6 operating instructions

PeakTech

PeakTech 4000 Procedure of calibration

YOKOGAWA

YOKOGAWA 90050B user manual

Gossen MetraWatt

Gossen MetraWatt METRALINE DMM16 operating instructions

Fluke

Fluke 8846A Programmer's manual

Tempo Communications

Tempo Communications MM200 instruction manual

Elenco Electronics

Elenco Electronics CM-1555 operating instructions

Mastech

Mastech MS8238C user manual

SDAR

SDAR 830A, 830B, 830D, 830C user manual

RS PRO

RS PRO RS-9519BT instruction manual

BGS technic

BGS technic 8890 instruction manual

Amprobe

Amprobe Hexagon 60 user manual