Mastech I-CS-MS2030B User guide

MS2030B

AC Digital Clamp Meter
User’s Manual

CAT III

600 V

RS232

AUTO

CONTENTS CONTENTS

1.Introduct ion ........... ........... ........... .. .......1

2.Safety Info rmation...... ........... ............. ...1

2.1 Precaut ions ........... ..... ..... ..... ............ ..... 1

2.2 Safety Sy mbols........ ........... ........... .. ..3

3. Descriptio n............ ........... ............. .......4

3.1 Front Panel .. ........... ........... .. ........... ....4

3.2 Display . ........... .. ........... ........... .. .......7

4. Using the Mete r .... .. .. .........................8

4.1 Data Hold . ........... .. ........... ........... .. ....8

4.2 Manual Ra nge ........... ........... ........... .. 8

4.3 Auto Powe r Off ....... ........... ............. ...8

4.4 DC Voltage ............. ........... ........... .. ....8

4.5 AC Voltage ............. ........... ........... .. ....9

4.6 AC Curren t ........... .. ........... ........... .....9

4.7 Resista nce ........... ........... ........... .. ....10

4.8 Diode Test.. ............. ........... ............. ....11

4.9 Continuity ......... ........... .. ........... ..........11

4.10 Capa citan ce..... ........... ............. .........12

4.11 Temp erature .......... ............. ........... ...12

4.12 Frequency /Duty C ycle .... ........... .........12

4.13 NCV (Non-Co ntact Vo ltage ) ........... .......13

5. Specificat ions ................... .. .. ...........13

5.1 General S pecifications ........... ............1 3

5.2 Technical Spec if ications... ........... .. .....14

6. Maintenanc e......... .. .. ........................18

6.1 General Main tenan ce ........ ........... .........18

6.2 Replaci ng the Batteries. ........... ..........19

6.3 Replaci ng Test Leads.. ........... .. ..........1 9

7. Ac ce ssories .....................................2 0

1.Introduct ion

Make sure to read and follow all safety procedures to
avoid electric shock and/or injury. If the equipment
is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be
impaired.

The meter is a safe, reliable, yet small handheld 3 ¾ digital
clamp meter. Capable of measuring AC current, AC/DC
voltage, resistance, capacitance, temperature, frequency/
duty cycle, NCV, diode’s forward voltage drop, and continuity,
it’s ideal for both home users and professionals.

WARNING

2.Safety Inst ru ctions

The meter is designed and manufactured according
to safety requirements of EN 61010-1:2010,
EN 61010-2-032:2012, EN 61010-2-033:2012 on electronic
measuring instrument and hand held digital multipurpose
meter. And conforms to UL STD.61010-1,61010-2-032,
61010-2-033, Certified to CSA STD.C22.2 NO.61010-1,
61010-2-032,61010-2-033.The product meets with the
requirements of 600V CAT III and pollution degree 2.

• All safety guidel ines ou tline d should be follow ed
otherwise the pr otect ion pro vided by the instr ument
may be impaired.

• War ning sy mbols in the manua l alert u sers of p otential
dangerous situ ation s.

• Precautions ar e to prev ent the u ser from damagin g
the instrument o r the tes t objec t.

2.1 Precaution s

To avoid poss ible el ectri c shock , personal injur y or
damage to the mete r, pleas e obser ve the following :

1. Before using th e meter, c heck th e meter for damage
during transpo rt.

2. Check the test le ads for d amage t o the insulation o r
wires before use .

01 02

3. Ensure the mete r works p roper ly by testing a know n
voltage first. I f not wor king pr operl y, have th e meter
serviced befor e using .

4. Never exceed th e prote ction l imit values indi cated
in the specifica tions f or each r ange of measurem ent.

5. Always use cauti on when m aking v oltage
measurements a bove 60 V dc or 30V a c rms.

6. Make sure to use th e corre ct inpu t jack, function a nd
range when measu ring.

7. Do not place the me ter in an y envir onment with dust ,
explosive gas or v apor.

8. Always keep fing ers beh ind the p robe barriers.

9. Connect the com mon tes t lead fi rst, th en the hot le ad.
Disconnect in re verse o rder.

10. Turn off powe r and dis charge capacit ors bef ore
measuring resi stanc e, diod es or continuity.

11. Fail ure to fo llow sa fety guideline s may pre vent th e
meter’s b uilt in protecti on from w orkin g properly.

12. To avoid d amage o r incorre ct read ings, c heck fo r AC
voltage presen t befor e makin g DC voltage
measurements .

13. Do not use the met er with t he batt ery cover not
securely in plac e.

14. When the “ ”symb ol appe ars, re place t he batter ies
to avoid incorre ct read ings

15. Before openi ng the ca se, alw ays disconnect t est
leads from all ene rgize d circu its.

16. Only use the tes t leads p rovid ed with the meter.
Replace only wit h simil ar lead s with matching
specificatio ns.

17. Do not touch inp ut jack s durin g measurement to
avoid electric s hock.

18. Before switc hing fu nctio ns, remove test le ads fro m
an circuit.

2.2 Safety Symbo ls

Note- Impor tant sa fety in formatio n, refe r to the
instr uctio n manua l.

Application around and removal from UNINSULATED
HAZARDOUS LIVE conductors is permitted.

Cauti on, pos sibil ity of el ectric sho ck

Equip ment pr otect ed thro ughout by do uble
insul ation o r reinf orced i nsulatio n.

Conforms to UL STD. 61010-1, 61010-2-032,
61010-2-033; Certified to CSA STD C22.2 NO.
61010-1, 61010-2-032,61010-2-033

Compl ies wit h Europ ean (EU ) safety sta ndard s
Earth ( groun d) TE RMINA L

Direc t curre nt

Altern ating c urren t

CAT III: MEASUREMENT CATEGORY III is applicable to
test and measuring circuits connected to the distribution
part of the building's low-voltage MAINS installation.

CAT II: MEASUREMENT CATEGORY II is applicable to test
and measuring circuits connected directly to utilization points
(socket outlets and similar points) of the low-voltage MAINS
installation.
CAT IV: MEASUREMENT CATEGORY IV is applicable to
test and measuring circuits connected at the source of the
building’s low-voltage MAINS installation.

3. Description

3.1 Front Panel

13

12

11
10

1

2

3

4
5

RS232

AUTO

6
7

9

03 04

8

1. Current Clamp
For measuring AC cu rrent .

2. Safety barrie r
Helps to keep hand s from to uchin g conductors whi le

measuring curr ent.

3. Rotary Switch
Used to select fun ction a nd rang e.

4.Backlight/ Hold bu tton

Hold the

The worklight wi ll turn o n as well w hen the rotary
switch is in one of th e curre nt posi tions. Hold down
the button again t o turn off the backligh t.Pre ss the

/

the screen. Th e
Press the “HOLD” b utton a gain to r eturn the displa y
to normal.

5. NCV Button
Hold the “NCV” but ton to ac tivat e the non-contac t

voltage mode.

6. Frequency/D uty Cyc le Butt on
Press the “Hz%” bu tton wh ile in vo ltage mode to

switch to freque ncy mod e. Pres s the but ton again
to switch to duty cy cle mod e. Pres s the but ton a
third time to retu rn to vol tage mo de.

7. Display
ax. display valu e: 3999

8. Input Jack

Connection for t he live ( red) te st lead for voltag e,
resistance, ca pacit ance, d iodes and contin uity.

9. COM Jack

Connection for t he comm on (bla ck) test lead.

/

button to turn on th e backl ight.

button and the dis play wi ll keep t he reading on

“

”

symbol appears o n the dis play.

10. Range Button

Press the “RAN” bu tton to s witch t o manual range.
Each press incre ases th e range a nd returns to the
lowest range whe n press ed in the h ighest range.
Hold the button to r eturn t o auto- range.

11. Select Button

Press “SEL” to swi tch bet ween AC/ DC voltage and
between functi ons in th e multi -function posi tion.

12. Clamp Trigger

Press the trigge r to open t he clam p jaw; release
to close.

13. Wor kligh t

When the rotary sw itch is i n one of th e curre nt
positions and th e backl ight is t urned on, the work light
will also turn on.

05 06

3.2 Display

Symbol

AUTO

°C°F

%

Hz, kHz

MV,V

µA, mA,A

nF, µF, mF

Ω, kΩ, MΩ

AUTO

RS232

Description

Auto-range
Direct Current

Alternating Cur rent

Low Battery

Celsius/Fah re nheit

Percentage (du ty cycl e)

Hertz (frequen cy)

Volts (Volt age)

Amps (Current)

Farads (capaci tance )

Ohms (resista nc e)

Continu ity

Diode

Display H old

Polarity Indic ator (N egati ve)

4. Using the Mete r

4.1 Data Hold

The data hold func tion wi ll keep t he current readi ng on
the display. To activate data hol d:

1. Press the “ / ” butto n and the r eadin g will be h eld
on the display. The“ / ”symbol ap pears .

2. Press “ / ” again to re lease t he hold .

4.2 Manual Range

The meter ’s default range i s “AUTO.” To sel ect man ual
range, press “RA N” to ent er manu al range. Each pre ss
of the button incr eases t he rang e and returns to the
lowest range whe n press ed at the h ighest range. Ho ld
the button to retu rn to aut o-ran ge. Manual range c annot
be used in 40 A and 4A curre nt mode s, freque ncy, duty
cycle, diode, co ntinu ity, or tempera ture mo des

4.3 Auto Power Off

If the meter is not used for approx. 30 min., the meter will
automatically turn itself off to conserve battery power. To turn
the meter back on after auto off, press the “SEL” button.

4.4 DC Vol tage

1. Insert the red te st lead i n the “IN PUT” ja ck and the
black lead in the “C OM” jac k.

2. Move the rotary s witch t o the“ ”p ositi on.
The def ault mo de is DC vo ltage. Connect t he test
leads across the c ircui t or load t o be measured.

3. Read measured v oltag e on the di splay.

CAUTION
Use extra c autio n when me asuri ng high v oltages
to avoid electri c shock o r damag e.

WARNING
Do not attempt to me asure v oltag es abov e
600V DC to prevent i njury o r damag e to the me ter.

V

07

08

4.5 AC Voltage

1. Insert the red te st lead i n the “IN PUT” ja ck and the
black lead in the “C OM” jac k.

2. Move the rotary s witch t o the“ ”p ositi on.
Press “SEL” to swi tch to AC vo ltage . Conne ct the test

V

leads across the c ircui t or load t o be measured.

3. Read measured v oltag e on the di splay.

CAUTION

Use extra c autio n when me asuri ng high v oltages
to avoid electri c shock o r damag e.

WARNING

Do not attempt to me asure v oltag es abov e
600V AC to pre vent injury or dam age to th e meter.

4.6 AC Curre nt

1. Move the rotary s witch t o the pos ition w ith the
proper range.

2. Press the trigg er to ope n the cla mp and insert one
conductor insi de the ja ws. Onl y clamp one conduc tor;
multiple condu ctors w ith differen t curre nt dire ction s
will cancel out re ading s.

3. Read measured c urren t on the di splay.

CAUTION

1.If the current r ange is n ot know n befor e hand,
set the range to the h ighes t range a nd adju st
down as necessar y.

2.When measuri ng bare w ires, u se extr a caution t o
avoid electric s hock.

4.7 Resistance

1. Turn off all pow er and di scharge capaci tors on t he
circuit under te st.

2. Insert the red te st lead i n the “IN PUT” ja ck and the
black lead in the “C OM” jac k.

3. Move the rotary s witch t o the pos ition . Connect
the test leads acr oss the c ircui t to be mea sured.

Ω

4. Read measured r esist ance on t he display.
Tip s for mea suring resista nce:

- Sometimes the re sisto r value a nd measured resi stanc e
diffe r.This i s due to th e meter’s o utput test curre nt goes
through all poss ible pa ths bet ween leads.

- For low resistan ce meas ureme nts, short the tes t leads
and record the res istan ce disp layed. Then co nnect t o
the circuit and su btrac t the rec orded resistan ce from
the measuremen t for the m ost acc urate r esults.

- When leads are dis conne cted or m easurement is ou t
of range, “OL” is di splay ed.

WARNING

To avoid i njury o r damag e to the me ter, make su re
to turn off all powe r and dis charg e all cap acitors
before measuri ng resi stanc e.

09 10

4.8 Diode Test

1. Turn off all pow er and di scharge capaci tors on t he
circuit under te st.

2. Insert the red te st lead i n the “IN PUT” ja ck and the
black lead in the “C OM” jac k.

3. Move the rotary s witch t o the pos ition . Press

Ω

“SEL” to switch to d iode mo de. Con nect th e test
leads across the c ircui t to be mea sured.

4.Read the measu red for ward bi ased voltage dro p on the
display. If the l eads ar e reversed, only “ 1” is dis playe d.

WARNING

To avoid i njury o r damag e to the me ter, make su re
to turn off all powe r and dis charg e all cap acitors
before measuri ng diod es.

4.9 Continuity

1. Turn off all pow er and di scharge capaci tors on t he
circuit under te st.

2. Insert the red te st lead i n the “IN PUT” ja ck and the
black lead in the “C OM” jac k.

3. Move the rotary s witch t o the pos ition . Press

Ω

“SEL” twice to swi tch to co ntinu ity mod e. Connec t
the test leads acr oss the c ircui t to be mea sured.

4. Read measured r esist ance on t he display. If th e
measured resis tance i s less th an 60Ω, the meter’s
buzzer will soun d.

WARNING

To avoid i njury o r damag e to the me ter, make su re
to turn off all powe r and dis charg e all cap acitors
before measuri ng cont inuit y.

4.10 Capacitan ce

1. Turn off all pow er and di scharge capaci tors on t he

circuit under te st.

2. Insert the red te st lead i n the “IN PUT” ja ck and the

black lead in the “C OM” jac k.

3. Move the rotary s witch t o the pos ition . Press

“SEL” three time s to swit ch to cap acita nce mode.

Ω

Connect the test l eads ac ross th e circu it to be
measured.

4.Read measure d capac itanc e on the display.

4.11 Temp eratu re

1. Move the rotary s witch t o the “°C ” or “°F” p osition .

The display will s how the c urren t ambient temper ature .

2. Connect the red e nd of the i nclud ed type-k

thermocouple t o the “IN PUT” ja ck and the black end
to the “COM” jack.

3. Touch th e tip of th e therm ocouple to the obj ect to be

tested.

4. Read measured r esist ance on t he display.

4.12 Frequency /Duty C ycle

1. Insert the red te st lead i n the “IN PUT” ja ck and the
black lead in the “C OM” jac k.

2. Move the rotary s witch t o the pos ition . While in

Ω

voltage mode, pr ess “Hz %” to swi tch to fr equency
mode. Connect th e test le ads acr oss the c ircuit to
be measured.

3. Read measured r esist ance on t he display.

4. Press “Hz%” aga in to swi tch to du ty cycle mode.

Connect the test l eads ac ross th e circu it to be
measured.

5. Read measured d uty cyc le on the d isplay.

6. Press “Hz%” to re turn to v oltag e mode.

11 12

4.13 NCV (Non-Co ntact Voltage)

1. Move the rotary s witch t o any pos ition.

2. Hold the “NCV” bu tton an d move th e tip of the
clamp close to the t est obj ect. If t he dete cted volt age
is >110V AC , the met er will b eep and the NCV indi cator
will flash.

Note:

1. Even if no indica tion is g iven, v oltage may still b e
present. Do not re ly sole ly on NCV d etection to
determine the pr esenc e of volt age.

2. When measurin g AC/DC vo ltage , the NCV indicato r
may flash due to ind uced vo ltage .

3. External powe r sourc es/in terference may t rigge r the
NCV indicator.

5. Specificat ions

5.1 General Spec ifica tions

• Saf ety rating: CAT III 600V, pollution degree 2

• Max . operating altit ude: 2000m

• Ope rating temperat ure: 0~40°C, <80% R H

• Sto rage temperatur e: -10~60°C, <70% R H
(ba ttery removed)

• Temperature co efficie nt: 0.1 accuracy/°C
(<1 8°C or >28°C)

• Max . voltage between t erminals and
gro und: 600V DC or AC rm s

• Sam ple rate: approx. 3 t imes/sec

• Display: 3 ¾ digit LCD (ma x. display: 3999)

• Ove r-range indicat ion: display only s hows “OL”

• Low battery indicati on: when battery vo ltage drops below
ope rating voltage, “ ”symbol appears o n the display

• Pol arity indicatio n: automaticall y displays “-“

• Pow er: 3x 1.5V AAA batteries

• Dimensions: 198mmX 79mmX38mm

• Weight: approx. 196g (with batt ery)

• Max . jaw opening: 26mm

13

5.2 Tech nical S pecif ications

Accuracy: ±(% of r eadin g + digit s), 1 year warrant y.
Ambient temp: 18 °C~28 °C, hum idity: <75%.
Temperature coeffic ient: 0.1accur acy/° C
(0°C~ 18°C or 28°C~40° C)

mark

conduc tor

mark

mark

For AC current meas ureme nt, kee p the conductor in t he
center of the clam p; othe rwise t he reading can dev iate
as much as 1.5% of act ual mea surem ent.

5.2.1 DC Voltag e

Range

Resolution

Accuracy

400mV 0.1mV

4V

40V 10mV

1mV

±(0.8% of readin g+3 dig its)

400V 0. 1V

600V

1V

- Input impedanc e: 10M

- Overload prote ction : 600V DC o r AC rms

- Max. input volta ge: 600 V DC

14

5.2.2 AC Volta ge

Range

400mV 0.1mV

4V

40V 10mV

400V 0. 1V

600V

- Input impedanc e: 10MΩ

- Overload prote ction : 600V DC o r AC rms

- Max. input volta ge: 600 V DC

- Frequency rang e: 40Hz ~400H z

- Response: Ave rage; c alibrated to rms s ine wav e

5.2.3 AC Current

Range

4A

40A 0.0 1A

400A 0. 1A

600A

- Frequency rang e: 50Hz ~60Hz

- Max. input curre nt: up to 1 20% of fu ll scale for no more
than 60 seconds.

- Response: Ave rage; c alibrated to rms s ine wav e

Resolution

1mV

±(1.0% of readin g+5 dig its)

1V

Resolution

0.001A

±(2. 5% of rea ding+5 di gits)

1A

Accuracy

Accuracy

5.2.4 Resistan ce

Range

400Ω 0.1Ω

4KΩ 1Ω

40KΩ 10Ω

400KΩ 0.1KΩ

4MΩ 1KΩ

40MΩ 10KΩ

- Open circuit vol tage: a pprox . 0.4V

- Overload prote ction : 250V DC o r AC rms

5.2.5 Diode Tes t

Range

- Forward DC curre nt: app rox. 1m A

- Reverse DC volta ge: app rox. 1. 5V

- Overload prote ction : 250V DC o r AC rms

5.2.6 Continui ty

Range

- Open circuit vol tage: a pprox . 0.4V

- Overload prote ction : 250V DC o r AC rms

Resolution

±(1.0% of readin g+5 dig its)

±(2. 0% of rea ding+5 di gits)

Resolution

0.001V

If the measured re sista nce is le ss
than 60Ω,the met er ’s buzz er will s ound.

Shows app rox.
forward biased v oltag e drop

Accuracy

Accuracy

Function

15

16

5.2.7 Capacita nce

Range

5.0nF 0.001nF

50nF 0. 01nF

500nF 0.1nF

5.0µF

50µF 0.01µF

100µF 0.1µF

- Overload prote ction : 250V DC o r AC rms

5.2.8 Frequenc y (V posi tion)

Range

50Hz 0. 01Hz

500Hz 0.1Hz

5kHz

10kHz 0.01kHz

- Measuring rang e: 10~1 00kHz .

- Input voltage ra nge: ≥0. 2V AC rms. ( measured
frequency will i ncrea se as the i nput voltage inc rease s

- Overload prote ction : 600V DC o r AC rms

5.2.9 Duty Cycle
Range

0.1%~99.9%

Resolution

±(4.0% of readin g+5 dig its)

1nF

Resolution

1Hz

Resolution

0.1% ±2.0%

±(3.0% of readin g+3 dig its)

±(1.0% of readin g+5 dig its)

Accuracy

Accuracy

Accuracy

5.2.10 Temper ature
Range

-20~100 0°C 1°C

-4~1832 °F

Resolution

1°F

±(3% of reading+ 3 digit s)

Accuracy

6.Maintenan ce

WARNING

Protection imp airme nt if use d in a mann er not
specified by the m anufa cture r.

6.1 General Main tenan ce

This section pro vides b asic ma intenance prin ciple s,
includi ng clea ning an d batte ry replacement . Do not
attempt to do any re pair or c alibr ation to the meter
unless you are exp erien ced mai ntenance perso nnel.

WARNING

Remove test lead s from me ter bef ore opening the
battery cover to a void da mage or i njury.

Use a damp cloth and a s mall am ount of d etergent to
clean the meter re gular ly. Do not use abra sives o r
chemical solve nts. Di rty or we t input jacks can affec t
reading s.

To clean the in put jac ks:

1. Turn off meter a nd remo ve test leads.

2. Wipe any debris o ff in put jacks.

3. Use a cotton swab w ith a cle aner/ lubricant

(i.e. WD-40) to cl ean jac ks.

4. Use a new swab for ea ch jack t o preve nt cross

contaminatio n.

17

18

6.2 Replacing T he Batteries

To avoid e lectr ic shoc k, make sure that th e test
leads have been cl early m ove awa y from the
circuit under me asure ment be fore op ening the
battery cover of t he mete r.

Do not mix ol d and new b atterie s. Do not m ix
alkalin e, stan dard (c arbon-z inc), o r rechargeable
(n i-cad , ni-mh , etc) batt eries .

5.1.1 If the sign “ ” appe ars, it means th at th e
bat terie s should be replace d.

5.1.2 Loose n the fi xing screw of the bat tery cover an d
rem ove it.

5.1.3 Repla ce th e exhaus ted batter ies with new ones.

5.1.4 Put the batte ry co ver back and fix it again to its
ori gin form.

Note:

Do no t reverse the po larity of the batte ries.

WARNING

WARNING

6.3 Replacing Test Leads

Replace test lea ds if lea ds beco me damaged or worn .

Use meet EN 61010-031 standard, rated CAT III 600V, or
better test leads.

WARNING

7. Ac cesso ries

User ’s ma nual

Test leads

Type-K Thermo coupl e

Carry case

AAA batteries (1. 5V)

1 piece

1 pair

1 piece

1 piece

3 pieces

19

00-05-32 93