Ms8222 h english_manual

Users Manual

Table of Contents

Safety Information ……………………..……………… 1

Important Safety Instructions ………………….… 1

Symbol Explanation …………………………….… 4

Your Digital Multimeter …………………..…………….. 5

Introduction ………………….……..……………… 5

Names of Components …………………..………. 8

LCD Display ……………………………..………. 10

Other Functions …………….……………..………. 11

Making Measurements .……………………………….. 12

Introduction ………………….……..……………… 12

Measuring DC/AC Volts …………..…….………. 13

Measuring DC/AC Milliamps ………………. 15

Measuring DC/AC Amps …………….…….. 17

Measuring Resistance and Continuity ………… 19

Measuring Capacitance ………………………... 21

Measuring Inductance ………………..…………. 23

Measuring Frequency ……………….………….. 25

Measuring Temperature ………………………... 27

Diode Testing ………………..….…………...….. 29

TTL Logic Testing ……………….…………...….. 31

Transistor Testing ………..……………….……….. 32

User Maintenance ………………………..………….. 33

Replacing the batteries ………………….……… 33

Replacing the Fuses ……………………………… 34

Others ……………………………………………… 35

Specifications …………………………..……………. 36

General Specifications ……………………..…… 36

Resolution and Accuracy ………………………… 37

1

Safety Information

READ THIS MANUAL CAREFULLY BEFORE

USING THIS MULTIMETER!

The digital multimeter has been designed according

to IEC1010-1 concerning safety requirements for

electrical measuring instruments with an overvoltage

category (1000V CAT ) and pollution 2.

Important Safety Instructions

Injury or death can occur even with low voltages

and low current. It is extremely important that you read

this safety information before using your multimeter.

Follow all safety practices and proper operating

procedures for equipment being tested.

2

Disconnect the power and discharge

high-voltage capacitors before testing in Ohms,

Continuity, Diode, Capacitance, and other test

of on circuit

Inspect the test leads for damaged insulation

or exposed metal. Check test lead continuity.

Damaged leads should be replaced.

Do not use the instrument if it looks damaged.

Select the proper function and range for your

measurement.

User caution when working above 60V DC or

30V AC rms. Such voltages pose a shock

hazard.

Disconnect the live test lead before

disconnecting the common test lead.

When using the probes, keep your fingers

away from probe contacts. Keep your fingers

behind the finger guards on the probes.

When measuring current, turn the power off to

the circuit being tested before connecting the

meter test lead in the circuit.

3

Place test leads in proper input terminals

Measurement time must fewer 10 seconds at

measuring great current every times, and the

interval time must more 15 minutes every

times.

Do not operate this multimeter in an explosive

atmosphere (i.e., in the presence of flammable

gases or fumes, vapor or dust.).

Never replace the protective fuse inside the

multimeter with a fuse other than the specified

or approved equal fuse. Replace only with

same type of fuses. To avoid electrical shock,

disconnect the test leads and any input

signals before replacing the fuses.

Replace only with same type of battery. To

avoid electrical shock, disconnect the test

leads and input signals before replacing the

battery.

Do not attempt calibration or service unless

trained and another person capable of

rendering first aid and resuscitation is present.

4

Symbol Explanation

Attention! Refer to the user

manual

Dangerous voltage may be

present at terminals

Ground (Earth terminal)

AC(Alternating current)

DC(Direct current)

AC or DC

Battery

Fuse

Conforms to European Union

directives

Double insulation (Protection

Class Ⅱ)

5

Your Digital Multimeter

Introduction

This meter is a portable professional measuring

meter with digital and 40 segment graph bar display. And

the meter has functions of date hold and back light, to

easily read measurement result. Overload protection and

low battery indication are provided, this meter is ideal for

use in the fields, workshop, school, hobby, and home

applications. Include following measuring functions:

DC/AC Volts

DC/AC Current

Resistance

Capacitance

Inductance

Frequency

Temperature

Continuity

Diode

Transistor

TTL logic

6

700V1000V

HOLD

1000V CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

FuAC

0 105

hFE

15 20

mVV

nF

MkHz H mH k

¡ ãCA

mA

LIGHT Lx/Cx

2m¡ ãC

700

¡ ãC Lx

/

Figure 1

7

.5V X 6 SIZE A

G BATTERY C

E TEST LEADS

D ELECTRICA

VENT FIRE, US

10A/250V 6

0.5A/250V 5

EETS:IEC1010

CAT III POLLU

Figure 2

8

Names of Components

． LCD

Display measuring result and function, and

other symbol. ⑵． key

When measuring AC, you must press down

this key at Volts or Current range. ⑶． LIGHT Key

When press down the key, Backlight will be on;

backlight will be self-off about six seconds

later. ⑷． Power Switch

When press down this key, the meter’s power

will be on. ⑸． Function/Range selector rotary switch

This switch selects the function and range. ⑹． Cx socket

This Cx socket is made testing capacitor. ⑺．10A input terminal (socket)

This is the positive input terminal for current

measurement (AC or DC) up to 10A.

9

．/mA/Lx input terminal (socket)

This is the positive input terminal for

temperature, mA or inductance. ⑼．COM input terminal (socket)

This is the negative (ground) input terminal for

all measurement modes. ⑽．V/Ω/Hz input terminal (socket)

This is the positive input terminal for volts,

resistance, frequency, diode continuity and

logic. ⑾．Transistor socket

This socket is made testing transistor. ⑿．HOLD key

To press down this key, the display value will

be locked and keep unchanged. To press the

key again, the locked status will be erased and

enter normal measurement status. ⒀．Lx/Cx key

This key must be pressed down when

measuring capacitance and inductance. ⒁．Bottom case

10

．Meter’s bracket ⒃．Battery cover ⒄．Special screws

The screws are used to fix battery.

LCD Display FuAC

0 105

hFE

15 20

mVV

nF

MkHz H mH k

¡ ãCA

mA

Figure 3 ⑴． The HOLD function is on. ⑵． AC measurement status. ⑶． Negative measurement value. ⑷． hFE Transistor measurement status.

11

． Indication low battery ⑹． Analog graph bar ⑺． TTL logic test, When “ ” display, indication

high logic; when “ ” display, indication low

logic. ⑻． Display unit of measurement. ⑼． Continuity measurement status. ⑽． Display unit of measurement. ⑾． Diode measurement status. ⑿． Indication dangerous voltage (high volts).

Other Functions ⑴． Auto power off. The meter will auto power off

after about 10 minutes. Press up the key and

press down the key, the power will be on

again. ⑵． Buzzer. When doing continuity test, if the

resistance is smaller than 50Ω, the buzzer will

be sound. And when doing TTL logic test, if

measurement result is low logic, the buzzer

will be sound.

12

． Backlight. If the light is dark to make the

reading difficult when measuring, you can

press “LIGHT” key to open the back light. ⑷． Date Hold. If you need data hold when

measuring, you can put on “HOLD” button, it

will hold the reading; if you put the button

again, data hold is not continue.

Making Measurements

Introduction

This chapter shows overall procedures for making

measurements in any of the rotary selector positions.

Necessary input connections are shown. And safety

information is showed.

13

Measuring DC/AC Volts

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

V

Figure 4

． Connect the black test lead to the COM jack

and the red test lead to the V jack. ⑵． Set the range switch at the desired V range

position. Connect the test leads as shown

Figure 4. ⑶． When only the figure “OL” is displayed, it

14

indicates over range situation and the higher

range has to be selected.

． You can get a reading from LCD display. The

polarity of the red lead connection will be

indicated along with the voltage value. ⑸． When measuring AC volts, please press down

the “ ” key; when measuring DC volts,

please press up the “ ” key.

WARNING：：：：

Can’t measure higher than 1000V DC or

700V AC RMS.

When the magnitude of the voltage to be

measured is unknown, always set the

rotary selector at the highest range.

Don’t touch any electrical conductors, to

avoid electrical shock.

After measuring completely, disconnection

the test leads with the circuit to be

measured, and remove the test leads from

the meter.

15

Measuring DC/AC Milliamps

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

mA

Figure 5


and the red test lead to the mA jack. ⑵． Set the range switch at the desired mA range




16




indicated along with the voltage value. ⑸． When measuring AC current, please press

down the “ ” key; when measuring DC

current, please press up the “ ” key.

WARNING：：：：

Can’t measure higher than 200mA in mA

range, otherwise the fuse will blowout.


the test leads with the circuit to be measured,

and remove the test leads from the meter.

17

Measuring DC/AC Amps

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

A

Figure 6


and the red test lead to the 10A jack. ⑵． Set the range switch at the desired 10A range



18

indicates over range situation.



indicated along with the voltage value. ⑸． When measuring AC current, please press

down the “ ” key; when measuring DC

current, please press up the “ ” key.

WARNING：：：：

Can’t measure higher than 10A, otherwise

the fuse will blowout.

Measurement time must fewer 10 seconds

at measuring great current every times,

and the interval time must more 15 minutes

every times.


the test leads with the circuit to be

measured, and remove the test leads from

the meter.

19

Measuring Resistance and Continuity

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 7


and the red test lead to the Ω jack. ⑵． Set the range switch at the desired resistance

range position. Connect the test leads as

shown Figure 7. ⑶． When only the figure “OL” is displayed, it

20



． You can get a reading from LCD display. ⑸． When doing continuity test, if the resistance is

smaller than 50Ω, the buzzer will be sound.

Connect the test leads as shown Figure 7.

WARNING：：：：

Before measuring resistance in circuit to be

sure power off; and to be sure capacitance

has been discharge fully.




21

Measuring Capacitance

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 8

． Set the range switch at the desired Cx range

position and select proper range. and press

down “Lx/Cx” key. ⑵． Insert the capacitance to the test socket as

shown Figure 8.

22

． When only the figure “OL” is displayed, it


range has to be selected. ⑷． You can get a reading from LCD display.

WARNING：：：：

Before measuring capacitance in circuit to be

sure power off; and to be sure that has been

discharge fully.




23

Measuring Inductance

700V1000V

1000V CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 9


and the red test lead to the Lx jack. ⑵． Set the range switch at the desired Lx range


Figure9.

24



range has to be selected. ⑷． You can get a reading from LCD display.

WARNING：：：：

Before measuring inductance in circuit to be

sure power off; and to be sure capacitance

has been discharge fully.




25

Measuring Frequency

V

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 10


and the red test lead to the Hz jack. ⑵． Set the range switch at the desired 20 kHz


shown Figure10.

26


indicates over range situation. ⑷． You can get a reading from LCD display.

WARNING：：：：

Determine that the amplitude level of the

signal to be measured is not greater than the

input voltage limit (250V).




27

Measuring Temperature

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 11

． Insert the Thermocouple to the COM jack and jack. ⑵． Set the range switch at the desired range


Figure11.

28

． Put the Thermocouple on the object to be

measured. ⑷． When only the figure “OL” is displayed, it

indicates over range situation. ⑸． You can get a reading from LCD display.

WARNING：：：：

The meter will display temperature inside

meter, if no thermocouple.

Don’t enter and measure other signal.


the thermocouple and object to be

measured, and remove the thermocouple

from the meter.

29

Diode testing

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 12


and the red test lead to the “ ” jack. ⑵． Set the range switch at the desired “ ”


shown Figure12.

30

． The typical voltage drop should be about 0.6V

for silicon diode or 0.3V for germanium diode ⑷． If the diode is reversing biased or there is an

open circuit, The “OL” is displayed on LCD. ⑸． You can get a reading from LCD display.

WARNING：：：：

Before measuring in circuit to be sure power

off; and to be sure capacitance has been

discharge fully.




31

TTL Logic Testing

700V1000V

1000V CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 13


and the red test lead to the V jack. ⑵． Set the range switch at the desired “ ” range


Figure13. ⑶． When only the figure “OL” is displayed, it


32


． When volts (logic level) ≤0.8V, the ” ” will be

displayed on LCD and buzzer will be sound.

When volts (logic level) ≥2.0V, the “ ” will be

displayed.

Transistor Testing

700V1000V

1000V

CAT II

Lx

V

hFE200

2k

20k

2M

20M

200m

2

20

200

100020kHz

2m20m200m10

2n

20n

200n

2u

20u

20

2

200m

20m

A

ON

OFF

COM VmA10A

Cx

Hz

200k

PNP NPN

2m¡ ãC

700

¡ ãC Lx

Figure 14 ⑴． Set the range switch at the desired hFE range

position. Test as shown Figure14. ⑵． You can get a reading from LCD display.

33

User Maintenance

Replacing the Batteries

If the meter display “ ” on LCD, the battery must

be replaced to maintain proper operation. Following

procedure to replacing the battery:

． Press POWER key to OFF. Disconnect test leads

from any live source and remove the test leads from

the input terminals. ⑵． Remove the two special screws on the battery

cover and open the cover. ⑶． Remove the exhausted battery and replace with a

new 9V battery (IEC6F22 JIS006P NEDA1604

type). ⑷． Don’t use the meter before the batter cover is in

place and fastened fully.

34

Replacing the Fuses

Following procedure to replacing the fuse:

． Press POWER key to OFF. And disconnect test

leads from any live source and remove the test

leads from the input terminals. ⑵． Remove the two screws on the battery cover

and open the cover. ⑶． Remove the blown fuse and replace with fuse

of the same size and rating. Make sure the new

fuse is centered in the fuse holder. ⑷． The mA input terminal is protected by

F0.5A/250V fast blow ceramic fuse, Φ5×20.

The A input terminal is protected by F10A/250V

fast blow ceramic fuse, Φ6.3×32 ⑸． Don’t use the meter before the batter cover is

in place and fastened fully.

35

Others

． Clean your digital multimeter with a damp cloth

and mild detergent. Do not use abrasives,

solvents, or alcohol. ⑵． If any faults or abnormalities are observed, the

meter can not be used any more and it has to

be checked out.

36

Specifications

General Specifications

Maximum voltage between terminals and earth

ground: 1000V.

Display: 1999 counts, automatic polarity. And 40

segments bar graph.

Over range: “OL” will be displayed.

Low battery: “ ” will be displayed

Updates: approx. 3 times per second.

Data hold

Back light

Power supply: 9V IEC6F22, JIS006P, NEAD1604 type.

Temperature: operating 0~40°C

Storage -10~50°C

Relative humidity: 20~80%RH

Safety: Designed to IEC1010_1. 1000V CAT.

Size: 195×92×43(mm).

37

Resolution and Accuracy

Accuracy is given as ±(%reading +digits) at 18~28 ,

relative humidity up to 80%.

All specifications assume less than 1 year.

⑴． DC Voltage

Range Resolution Accuracy

(%rdg + digits)

200mV 0.1mV

2V 0.001V

20V 0.01V

200V 0.1V

±（0.5%+3）

1000V 1V ±（0.8%+3）

Input impedance: 10MΩ

Overload protection: DC1000V or AC700V

38

． AC Voltage


(%rdg + digits)

200mV 0.1mV

2V 0.001V

20V 0.01V

200V 0.1V

±（1.0 %+5）

700V 1V ±（1.2%+5）

Input impedance: 10MΩ

Frequency range: 40~400Hz.

Overload protection: DC1000V or AC700V ⑶． DC Current


(%rdg + digits)

2mA 0.001mA

20mA 0.01mA ±（1.0%+3）

200mA 0.1mA ±（1.5%+5）

10A 0.01A ±（2.0%+5）

Overload protection: mA --- F0.5A/250V Fuse

A ---- F10A/250V Fuse

39

． AC Current


(%rdg + digits)

2mA 0.001mA

20mA 0.01mA ±（1.2%+5）

200mA 0.1mA ±（2.0%+5）

10A 0.01A ±（3.0%+5）

Overload protection: mA --- F0.5A/250V Fuse

A ---- F10A/250V Fuse

Frequency range: 40~400Hz. ⑸． Resistance


(%rdg + digits)

200Ω 0.1Ω

2kΩ 0.001kΩ

20kΩ 0.01kΩ

200kΩ 0.1kΩ

2MΩ 0.001MΩ

20MΩ 0.01MΩ

±（1.0%+3）

200MΩ 0.1MΩ ±（5.0%+3）

Open circuit voltage: 0.45V; Overload protection: 250Vp

40

． Capacitance


(%rdg + digits)

2nF 0.001nF

20nF 0.01nF

200nF 0.1nF

2μF 0.001μF

20μF 0.01μF

±（4.0%+5）

⑺． Inductance


(%rdg + digits)

2mH 0.001mH

20mH 0.01mH

200mH 0.1mH

2H 0.001H

20H 0.01H

±（4.0%+5）

Overload Protection: F 200mA/250V fuse (quick acting,

resistance ≤1Ω)

Tested Inductance: Q≥10，Internal impedance≤1kΩ

41

． Frequency


(%rdg + digits)

20kHz 0.01kHz ±（1.5%+5）

Sensitivity: 250mV rms and input no more 10V rms

Overload Protection: 250V ⑼． Temperature


(%rdg + digits)

-20~ 1000 1 ±（3.0%+3）

Overload Protection: mA ---- F0.5A/250V

⑽． Transistor

Range Function

hFE

Display: read approximate hFE value

(0-1000) of transistor under test (ALL

TYPE)

Base Current: approx. 10µA，Vce: approx. 2.8V

42

． Diode

Range Resolution Function

1mV

Display :read approximate

forward voltage of diode

Forward DC Current: approx. 1mA

Reversed DC Voltage: approx.2.8V

Overload Protection: 250V DC or rms AC ⑿． Continuity

Range Function

Built-in buzzer will sound, if resistance is

lower than 50Ω.

Open circuit voltage: approx. 2.8V

Overload Protection: 250V DC or rms AC ⒀． TTL Logic

Range Function

When logic level is less or on 0.8V, LCD

displays “ ” and the buzzer produces

sound. When logic level is more and on

2.0V, LCD displays “ ”.

Overload Protection: 250V DC or rms AC

HYS005129

Technology

Ms8222 h english_manual