Mastech MS2208 Instruction Manual

I

Contents

Safety Instructions .................................................. 2

Safety Sign ............................................................... 3

General Description................................................. 3

Features .................................................................... 4

Appearance .............................................................. 6

Knob Switch Operations ......................................... 8

Button Switch Operations .................................... 10

LCD DISPLAY ......................................................... 12

Hz ............................................................................ 13

Instruction Manual ................................................ 15

AC voltage (V) measurement .............................. 15

AC CURRENT measurement ................................ 17

Test of single-phase circuit .................................. 19

cosΦ, sinΦ, and phase angle measurement ..... 22

Single-phase three-line circuit ............................. 22

Input Voltage and Current ................................... 23

During power measurement, if input voltage is over

600 V (RMS) or current over 200 A (RMS), “OL”

symbol will be displayed and bar symbol shown in

full scale. ................................................................. 23

II

Backlight ................................................................. 23

Auto Power Off ...................................................... 24

Power curve diagram ............................................ 24

Battery-low Indication .......................................... 26

General specification ............................................ 27

Technical specification .......................................... 29

Accessories ............................................................. 32

1

Please carefully read the instruction manual before

using the tester, and pay special attention to

“Warning” content. Please follow instructions under

“Warning”.

1. Please be very careful when test voltage is

higher than AC 30 V, and do keep in mind that

your finger shall not exceed the hand-shielding

part of the test probe.

2. Do not measure voltage which is higher than the

allowed input limit.

3. Before use, please check the meter and test

probe; do not carry out testing in case the test

probe is naked, tester housing is damaged, or

there is no LCD display, etc..

4. It meets requirements of safety standards only

when the meter is used together with the

supplied test probes. In case the test probe is

damaged and needs replacement, it is required to

replace it with a test probe of the same model

2

and identical electrical specifications.

5. Please never carry out any voltage measurement

whenever the test probe is inserted in any

current outlet.

6. Please do not expose the meter to strong light,

high temperature, or dampness.

Before use, please carefully read this

instruction manual. Especially safety

contents!

Safety Instructions

The digital power meter is designed and

manufactured in accordance with international

standard, IEC61010-1, and international safety

specification, IEC1010-2-032, and the meter strictly

follows the safety standard of double-insulation AC

600 V CAT III.

3

Safety Sign

Important safety signs; please refer to
instruction manual

High voltage hazard

Earthing

Double insulation (Category-II safety
equipment)

Battery low Indicator

General Description

The digital power meter is a hand-held intelligent

harmonic power tester, with both functions of digital

current testing and power testing. The tester is

comprised of three channels including voltage,

current, and power as well as a micro single chip

system, and it is equipped with a powerful software

for measurement and data processing functions; it can

4

measure, calculate, and display voltage, current,

active power, power factor, apparent power, passive

power, frequency, harmonic parameters, with stable

performance and operation convenience. The meter is

especially suitable for the measurement and

examination of on-site power equipment and

power-supplying circuits; with hand-held clamp

structure, small volume, and light weight, it can be

easily carried by the user, which makes it easy and

fast for doing measurement. For measurement of

sing-phase power, The meter is your ideal choice.

Features

1. The meter can be used for testing power, voltage,

current, peak value, phase, frequency, power

factor, phase angle, and reaction factor, etc. of

single-/three-phase circuit; automatic phase

sequence testing is possible for 3-phase

measurement.

5

2. True effective value measurement: accurate

measurement is possible even with serious

distortion in current waveform.

3. Low-consumption high-speed single-chip

microprocessor is employed and sophisticated

algorithm is applied, as a result, results can be

obtained rapidly and precisely, and up to 20

harmonics and distortion value thereof can be

measured.

Hand-held, clamp-type structure, with light weight,

convenient for carry-on.

6

Appearance

1

2

3

4

5

7

8

m

6

7

1. Current clamp size：Ф26mm

2. Function-switching knob :Rotation knob for

selecting different measuring function

3. Function-selection button: Button for operating

the measuring functions

4. Input terminal

T

erminal

Function

FunctionFunction

Function

V

Input terminal for measuring the first
phase; use yellow test probe for
connection

COM Input terminal for measuring the 2nd

phase; use black test probe for

connection. Common terminal: ground

input terminal (earthing) for all

measuring functions; use black test probe

for connection.

5. LCD display :4-digit digital display; 7-section

8

LCD for displaying measurement operation

function, test result, and unit sign.

6. H/

键：HOLD button :DATA HOLD

button; press down HOLD button, and the last

reading will be held and displayed on the display,

and “HOLD” symbol will be shown; press

HOLD button again, and the meter will switch

back to normal measurement mode.

7. Trigger :Press down the trigger, and the clamp

will open; release it, and the clamp will close.

8． LED Lamp

In power and current mode ,press

button

open or close Lamp

Knob Switch Operations

The function-switching knob is used for powering-on
and for switching to any measurement function in the
following table.

9

Knob position description

Sign

Knob position

Functions

OFF Powering-off

position

For powering-off

KW

Active power

position

For measuring ac

tive power, etc.

W

power position For measuring

active power, etc.

V～～～～

AC-voltage har

monics test posi

tion

For measuring A

C-voltage harmon

ics, etc.

A～～～～

AC-current har

monics test posi

tion

For measuring A

C-current harmon

ics, etc.

mA～～～～

AC-voltage har

monics test posi

tion

For measuring A

C-voltage harmon

ics, etc.

10

Note:

When the meter is automatically powered off, be
sure to switch the knob to “OFF” position; turn
on the meter after 5 seconds.

Button Switch Operations

Button descriptions

SN Function-selection button

1 MODE Test-mode switching button

2 ▲ Reverse-search button

3 ▼ Forward-search button

4 MIN/MAX

MAX/MIN Value

5 H/

HOLD/LIGHT

The following functions can be realized through

button operations:

1．MODE：

Under KW/W test mode, you can press MODE

button to switch the display of active power and

passive power; under A/V~ test mode, you can switch

11

the display among total harmonic distortion rate F, r,

and harmonic percentage.

2．▲：

press ▲ button to change view MAX value,MI

N value,measuring time; During testing harmonics

, you can change the times of harmonics.
press ▲ button to search backward thestored dat

a and show it on LCD. With every press of the

button, the searching cursor will move one step
backward to the previous data.

3．▼ ：

press ▼ button to change view MAX value,MIN

value,measuring time; During testing harmonics,

you can change the times of harmonics.
press ▼ button to search foreward thestored data

and show it on LCD. With every press of the

button, the searching cursor will move one step f
oreward to the previous data.

4．MAX/MIN：：：：

In test mode ,press MAX/MIN button to view

12

the max /min Power,current,voltage.

5．HOLD/

：：：：

After measurement, press this button to hold this

data on LCD; after powering-off, data will display

Press this button longer than 1S,Open or close the

back light.

LCD DISPLAY

13

LCD symbol Descripti

on

LCD
symbol

Descripti
on

AutoPowe
r Off

HOLD

Hold

LAG

Phase
angle lag

LEAD Phase

angle

lead
Battery
power
indication

o Phase

angle

(degree)

SINФ

Phase
angle
(degree)

COSФ Power

factor

AC
symbol

PEAK Peak

value

Hz

Frequency

Negative

symbol

MIN

Minimum
value

MAX Maximu

m value

USED

Used READ

read

W

watt A current

VAr

Passive
power

VA

Apparent

power

PHASE phase

TRMS

TRMS

%

Harmonic
percentag
e

V Voltage

14

LCD symbol Descripti

on

LCD
symbol

Descripti

on

%THD Total harmonics distortion ratio
H01F Total harmonics distortion ratio F

(relative to base wave)

H01r Total harmonics distortion ratio r

(relative to real effective value)

15

Instruction Manual
AC voltage (V) measurement

MAS TE CH

TL88-1

UL

MA ST EC H

TL88-1

UL

AC

V

m

16

1. According to the connection mode as above

Table , switch the function switching knob to V~,

select corresponding sockets from V,COM

terminal, and insert the test wire.

2. Connect the two test probes V1, COMto the

power source or load to be tested. The meter will

automatically test and display the result, and the

present harmonics percentage will be shown on

the following line.

3. Under voltage test mode, press MAX/MIN

button to view Max or Min value

4. Press MODE button to show harmonics

percentage on LCD, and the total harmonic

distortion ratio F and R will be cyclically

displayed. Press▲/▼ button to display value

of each measurement of the harmonic.

17

AC CURRENT measurement

3

2

1

m

N

18

1. Switch the function knob to A~ position;

2. Pull the trigger to open the clamp, and then clip

a wire which is to be tested; the measured

current value will be automatically shown on

LCD

3. Press MODE button to show harmonics

percentage on LCD, and the total harmonic

distortion ratio F and r will be cyclically

displayed.

4. Press ▲/▼ button to display value of each

measurement of the harmonic.

5. press MAX/MIN button to view Max or Min

value

Note:

1. You can select 50/60-Hz FIXED/AUTO

frequency test (AUTO). When input waveform

fluctuates, displayed harmonic values can be

kept stable if 50/60-Hz FIXED mode is selected.

2. Under AUTO frequency test mode, FFT

19

calculation is performed only when base-wave

frequency is between 45 and 65 Hz; harmonic

analysis is not performed when base-wave

frequency exceeds this range.

Test of single-phase circuit

1. Clip the clamp on the test wire of the power

supply or load. If the user needs to measure a

certain phase of the 3-phase circuit, then the

clamp should clip on the wire of the same phase.

2. switch the function switching knob to

KW/Wposition, select corresponding input

sockets from V1 or COM terminal and insert the

test wire

3. After it is correctly connected, you can measure

single-phase power (active power, power factor,

apparent power, passive power, voltage, current,

phase angle, peak value of voltage and current,

and frequency):

4. The meter will carry out automatic measurement

and display active power, and voltage/current

20

value of the load being tested will be displayed

on the bottom line of LCD; press down

MODE button, Var value of passive power will

be displayed on LCD; press WATT button to

display apparent power and power factor (cos Φ);

negative power factor signifies that the load

being tested is a load with capacitor

characteristics.

5. The maximum measurement range of active

power kW is 120 kW; if this range is exceeded,

“OL” symbol will be displayed beyond this

range. If voltage being tested is greater than 600

V, or current being tested greater than 200 A,

“OL”

symbol will be displayed on LCD.

6. The min. input voltage is 10 V and the min.

input current is 10mA; if active power value is

smaller than this limit, “0.00 kW” will be

displayed in stead of active power value.

7. Press Max/Min value to view Max/Min Value

21

8. Passive power is a value not directly measured;

equation for kVAr is kVAr

2

=kVA2-kW2; its value is

calculated by software based on the measured

voltage, current and active power, and displayed

on LCD.

Power supply side

Load

Red

Black

m

22

cosΦ, sinΦ, and phase angle
measurement

1. Switch the function-switch knob to KW/W position,

and the test wire is inserted to V1/COM input

terminals.

2. The meter will automatically measure and

display power factor, voltage value and current

value.

3. Press MODE button to display phase angle,

power factor (cos Φ), and sinΦ; negative power

factor signifies that the load being tested is a

load with capacitor characteristics.

4. Press MAX/MIN Button to view Max value,Min

value,measuring time.

Single-phase three-line circuit

the process for measuring power and power fact

or for single-phase three-line circuit is the same

as that for single-phase two-line circuit, where th

e black clip is connected to the middle wire, and

23

the red clip and clamp-type sensor are simultan

eously connected to all test wires.

Input Voltage and Current

During power measurement, if input voltage is over

600 V (RMS) or current over 200 A (RMS), “OL”

symbol will be displayed and bar symbol shown in

full scale.

Backlight

Press button longer than 1s, the backlight

will be lit up, and it will then be automatically turned

off after about 20 seconds.

Power supply side

Red

Black

Black

Red

m

m

24

Auto Power Off

1. If there is no function change or button press fo

10 minutes ,the meter will automatically turn

power off , When the meter is automatically

powered off, be sure to switch the knob to

“OFF” position; turn on the meter after 5

seconds.

2. Holding the button

down while turning

the meter on,Disables automatic power -off

Power curve diagram

(Active power=apparent power × PF)

（PF=1）

2000W 2000W

+E
+I
+P

360

O

-E

-I

-P

ACTIVE POWER

1000W

PEAK VALUE

E =141V

PEAK VALUE OF POWER

POWER

=14A

PEAK VALUE

180

O

90

O

MAXI

MAX

PF=kW/kVA

25

+V
+I
+P

P

+i

MAX

I

MAX

v

+v

-i

-V

X

-E

-I

-P

360

O

180

O

0

-

0

-

+V
+I
+P

P

0

-

-E

-I

-P

0

-

O45O

O

45

O

45

O

O

90

O

180

O

225

O

270

O

360

O

kW=I R

2

ACTIVE POWER

500W

MAX

I

MAX

v

26

Battery-low Indication

If battery voltage is low, “ ” symbol will be

displayed on the upper right corner of LCD. Then, it

is needed to replace new batteries.

Battery Replace

Warning

1. Before opening the back lid to replace batteries,

please make sure the meter is turned off and no

test probe is connected to any test wire so as to

avoid electrical shock; before using the meter,

please make sure the back lid is tightly closed.

Only batteries of identical model or electrical

specification can be used.

2. If “ ” symbol is shown on LCD, it signifies

that battery voltage with load is lower than the

minimum voltage for ensuring measurement

error limits, and the meter will prompt you to

change new batteries. Please follow the steps

below to replace batteries:

27

3. Disconnect test probes from test circuit, and

rotate function-switching knob to “OFF”, and

then take off test probes from the input sockets.

4. Open battery cove, Take out old batteries, and

replace them with 3new 1.5 V batteries. New

batteries shall not be used together with old ones.

Properly close the battery cover.

General specification

Complies with IEC/EN 61010-1 1000V CAT II ,600

V CAT III

1. Max. common-mode voltage: 600V AC RMS

2. Mode of display: LCD display; Max. reading:

6000

3. Range selection: Fully automatic range selection

4. Frequency detection: automatic (when harmonic

is serious, it is better to use manual settings for

testing frequency so as to assure the reading

stability)

28

5. Over-range display: “OL”

6. Data holding: “HOLD” is shown on LCD

7. Power supply: 3 batteries of 1.5 V, AAA

8. Power consumption: 250 mW

9. Storage temperature: - 20 °C ~ 70 °C

10. Operating temperature: 0 °C ~ 40 °C

11. Temperature Coefficient:0.05 × (specified

accuracy)per°C

12. Electromagnetic Compatibility: In an RF field of

3V/M,accuracy=specified accuracy , Otherwise

accuracy is unspecifieced.

13. Operating Altitude: 2000m CAT Ⅲ 600V；

3000m CAT Ⅱ600V

14. Store Altitude: 12000m

15. Dimensions: 208mm×78mm×35mm

16. Weight: about 350 g (with battery)

29

Technical specification

Accuracy: ±(% read + graduation #) ambient

temperature: 18°C ~ 28°C, Humidity 80%, frequency

for voltage, current: 45 Hz ~ 65 Hz

AC Voltage RMS

Range

Accuracy Resolution Input

impedance

10V-600V

±

(1.0%+5)

0.1V 1 MΩ //

10 pF

Max. allowed overload voltage: 750 V (RMS)

AC Current RMS

Range Accuracy Resolution

10mA-3999mA

±(2%+5) 0.01mA

4A-200A ±(2%+5) 0.01A

Max. allowed overload current: 200 A

30

Single-phase active power （（（（W））））

Range Accuracy Resolution

0.01W-120KW ±(3%+5) 0.01W

Min. test current: 10mA; Min. test voltage: 10V

Power factor

Range Accuracy

Resolution

0.3～1 Capacitive ±(0.02+2) 0.001

0.3～1 Inductive ±(0.02+2) 0.001

Min. test current: 10mA; Min. test voltage: 10V

Passive power (VAr)

2

=((((VA) 2+W

2

Range Accuracy Resolution

0.01W-120KW ±(3%+5) 0.01VAr

Min. test current: 10mA; Min. test voltage: 10V

Passive power Var is calculated according to the

measured V, A, and kW value。

31

Frequency (Hz)

Range Accuracy

Resolution

30Hz～1kHz 0.5%+1 0.1Hz

Min. test current: 10mA; Min. test voltage: 10V

Harmonic test

Harmonic number

Precision of harmonic voltage

1

±(3.0%+10)

2-6

±(3.5%+10)

7-8

±(4.5%+10)

9-10

±(5.0%+10)

11-15

±(7%+10)

16-20

±(10%+10)

Min. test current: 20mA; Min. test voltage: 20V

32

Accessories

Item Quantity

Instruction

Manual

×1

Battery 1.5V AA A Battery×3

Test Leads ×1

Test clip

×2（Red,Black）

Package box ×1

33

Quality Assurance

Thank you for using the product of our company;

this product has a warranty period of one year

starting from purchasing date.

This product has passed the strict quality test of our

company. Our company will exert our efforts to do

after-sales service for you in accordance with the

Warranty instructions.

In case there is any problem occurred during

warranty period, which is resulted from product

quality problem, please fill in the warranty card and

mail it in together with the product, and the service

department of our company will repair it or replace it

free of charge, while the user himself/herself shall not

take the meter apart.

34

When warranty period is over, the repairing will

be charged.

Free service does not apply to the following cases:

Problems and damages due to improper use or use

under environment which is not stipulated for this

product, including overloading.

Problems and damages due to unauthorized

dismantling or refitting and misuse.

Problems and damages due to user reasons.

Problems and damages due to natural disasters.