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MS2030A
AC Digital Clamp Meter
User’s Manual
AUTO RS232
A
V
COM
INPUT
600V
CAT III
600V
CAT III
MAX
200A
200
A
20
A
2A
600
V
600
V
NCV
HOLD
AC CLAMP METE R
MS2030A
CAT III
600 V
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CONTENTS CONTENTS
2.Safety Information.................................1
2.1 Precautions ........... ..... ...................... ..... 1
2.2 Safety Symbols........ ........................ ..3
3. Description.................................... .......4
3.1 Front Panel .......................... ...............4
3.2 Display .............. ........................ .......6
4. Using the Meter .................................7
4.1 Data Hold .............. ........................ ....7
4.2 DC Voltage .............. ........................ ..7
4.3 AC Voltage .............. ........................ ..7
1.Introduction ................................... .......1
4.4 AC Current............ ........................ ....7
5. Specifications .................................11
5.2 Technical Spec ifications.............. ......12
5.1 General Specifications......................11
6. Maintenance....................................14
4.5 Resistance.......... ........................ ......8
4.6 Continuity ........... ........................ ......9
4.7 Diode Test ..................... ...................9
6.2 Replacing the Batteries.....................15
6.1 General Main tenance ...........................14
6.3 Replacing Test Leads............... .........15
7. Acce ssories ....................................15
4.8 NCV (Non-Con tact Voltage) .............. .....10
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01 02
1.Introduction
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.
WARNING
The met er is a saf e, reliable, yet small ha ndhel d 3 ½
digital clamp me ter. Capable of measuring AC curren t,
AC/DC voltage, r esist ance and continuity, it’s ideal for
both home users an d profe ssionals.
3. Ensure the mete r works p roperly by testing a know n
voltage first. I f not wor king properly, have th e meter
serviced befor e using .
4. Never exceed th e prote ction limit values indi cated
in the specifica tions f or each range of measurem ent.
5. Always use cauti on when making voltage
measurements a bove 60 V dc or 30V ac rms.
6. Make sure to use th e corre ct input jack, function a nd
range when measu ring.
7. Do not place the me ter in an y environment with dust ,
explosive gas or v apor.
8. Always keep fing ers behind the probe barriers.
9. Connect the com mon tes t lead first, then the hot le ad.
Disconnect in re verse o rder.
10. Turn off power and discharge capacit ors bef ore
measuring resi stanc e, diodes or continuity.
11. Fail ure to fo llow safety guideline s may pre vent the
meter’s built in protecti on from w orking properly.
12. To avoid d amage o r incorrect readings, c heck fo r AC
voltage presen t befor e making DC voltage
measurements .
13. Do not use the met er with t he battery cover not
securely in plac e.
14. When the “ ”symb ol appe ars, replace the batter ies
to avoid incorre ct read ings
15. Before openi ng the case, always disconnect t est
leads from all ene rgize d circuits.
16. Only use the tes t leads p rovided with the meter.
Replace only wit h simil ar leads with matching
specificatio ns.
17. Do not touch inp ut jack s during measurement to
avoid electric s hock.
18. Before switc hing fu nctions, remove test le ads fro m
an circuit.
2.Safety Instru 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 outlined should be follow ed
otherwise the pr otect ion provided by the instr ument
may be impaired.
• Warning symbols in the manua l alert u sers of potential
dangerous situ ations.
• Precautions ar e to prev ent the user from damagin g
the instrument o r the tes t object.
2.1 Precaution s
To avoid poss ible el ectric shock, personal injur y or
damage to the mete r, please observe the following :
1. Before using th e meter, c heck the meter for damage
during transpo rt.
2. Check the test le ads for d amage to the insulation o r
wires before use .
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AUTO RS232
A
V
COM
INPUT
600V
CAT III
600V
CAT III
MAX
200A
200
A
20
A
2A
600
V
600
V
NCV
HOLD
AC CLAMP MET ER
MS2030A
03 04
3. Description
3.1 Front Panel
1
2
3
4
5
6
7
8
2.2 Safety Symbo ls
Note-Importa nt safe ty information,
refer to the instr uctio n manual.
Conforms to UL STD. 61010-1, 61 010-2 -032,
61010-2 -033; C ertified to CSA STD. C22.2
NO. 61010-1, 610 10-2-032, 61010-2-033
Complie s with Eu ropean (EU) safety
standards
Earth (ground) TERMINAL
Caution w hen tes ting on live conductors.
Equipme nt prot ected t hroughout by double
insulation or re inforced insulation.
Applica tion ar ound and removal from
UNINSULATED HAZARDOUS LIVE
conductors is pe rmitt ed.
Direct current
Alternating cur rent
10
9
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.
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1. Current Clamp
For measuring AC cu rrent .
2. Safety barrie r
Helps to keep hand s from to uching conductors whi le
measuring curr ent.
3. Rotary Switch
Used to select fun ction a nd range.
4. Display
Max. display val ue: 199 9
5. Input Jack
Connection for t he live ( red) test lead for voltag e,
resistance, di odes an d continuity.
6. COM Jack
Connection for t he comm on (black) test lead.
7. Hold Button
Press the “HOLD” b utton a nd the display will keep th e
reading on the scr een. The“ ”symbol app ears on t he
display. Pres s the “HOLD” button again t o retur n the
display to norma l.
8. Clamp Trigger
Press the trigge r to open t he clamp jaw; release to
close.
3.2 Display
A
V
V
A
kΩ
Symbol
Description
Low Battery
Volts (Volt age)
Amps (Current)
kilohms (Resis tance)
Continu ity
Diode
Display H old
Polarity Indic ator (N egative)
10. NCV Button
Hold the “NCV” but ton to ac tivate the non-contac t
voltage mode.
Hold the button to t urn on th e backlight.
The wor klight will turn on as well when the r otary
switch is in one of th e curre nt positions. Hold down
the button again t o turn off the backligh t.
9.Backlight
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4. Using the Meter
4.1 Data Hold
The data hold func tion will keep the current readi ng on
the display. To activate data hol d:
1. Press the “HOLD ” butto n and the reading will be hel d
on the display. The“ ”symbol appears.
2. Press “HOLD” ag ain to re lease the hold.
4.2 DC Vol tage
1. Insert the red te st lead i n the “INPUT” jack and the
black lead in the “C OM” jac k.
2. Move the rotary s witch t o the“ ”position.
Connect the test l eads ac ross the circuit or load to b e
measured.
3. Read measured v oltage on the display.
1,Do not attempt to measure voltages above 600V
DC and AC to prevent injury or damage to the
meter.
2,Use extra caution when measuring high voltages
to avoid electric shock or damage.
WARNING
4.3 AC Voltage
1. Insert the red te st lead i n the “INPUT” jack and the
black lead in the “C OM” jac k.
2. Move the rotary s witch t o the“ ”position.
Connect the test l eads ac ross the circuit or load to b e
measured.
3. Read measured v oltage on the display.
1.If the current r ange is n ot known before hand,
set the range to the h ighes t range and adjust
down as necessar y.
2.When measuri ng bare w ires, use extra caution
to avoid electri c shock .
CAUTION
2. Press the trigg er to ope n the clamp and insert one
conductor insi de the ja ws. Only clamp one conduc tor;
multiple condu ctors w ith differen t curre nt directions
will cancel out re adings.
3. Read measured c urrent on the display.
V
600
V
600
Tips fo r measuring resistance:
- Sometimes the re sisto r value and measured resi stanc e
diffe r.This is due to the meter’s output test curre nt goes
through all poss ible paths between leads.
- For low resistan ce meas urements, short the tes t leads
and record the res istan ce displayed. Then co nnect to
the circuit and su btrac t the recorded resistan ce from
the measuremen t for the m ost accurate results.
To avoid i njury o r damage to the meter, make su re
to turn off all powe r and dis charge all capacitors
before measuri ng resi stance.
WARNING
4.5 Resistance
1. Turn off all power and discharge capaci tors on t he
circuit under te st.
2. Insert the red te st lead i n the “INPUT” jack and the
black lead in the “C OM” jac k.
3. Move the rotary s witch t o the position. Connect
the test leads acr oss the c ircuit to be measured.
4. Read measured r esistance on the display.
4.4 AC Current
1. Move the rotary s witch t o the position with the
proper range.
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09 10
4.6 Continuity
1. Turn off all power and discharge capaci tors on t he
circuit under te st.
2. Insert the red te st lead i n the “INPUT” jack and the
black lead in the “C OM” jac k.
3. Move the rotary s witch t o the position. Connect
the test leads acr oss the c ircuit to be measured.
4. Read mea sured r esistance on the display. If th e
measured resis tance i s less than 70Ω, the meter’s
buzzer will soun d.
To avoid i njury o r damage to the meter, make su re
to turn off all powe r and dis charge all capacitors
before measuri ng cont inuity.
WARNING
4.7 Diode Test
1. Turn off all power and discharge capaci tors on t he
circuit under te st.
2. Insert the red te st lead i n the “INPUT” jack and the
black lead in the “C OM” jac k.
3. Move the rotary s witch t o the position. Connect
the test leads acr oss the c ircuit to be measured.
4.Read the measu red forward biased voltage dro p on the
display. If the l eads are reversed, only “ 1” is dis played.
To avoid i njury o r damage to the meter, make su re
to turn off all powe r and dis charge all capacitors
before measuri ng diod es.
WARNING
Note:
1. Even if no indica tion is g iven, voltage may still b e
present. Do not re ly sole ly on NCV detection to
determine the pr esenc e of voltage.
2. When measurin g AC/DC voltage, the NCV indicato r
may flash due to ind uced vo ltage.
3. External powe r sourc es/interference may t rigge r the
NCV indicator.
4.8 NCV (Non-Con tact Voltage)
1. Move the rotary s witch t o any position.
2. Hold the “NCV” bu tton an d move the tip of the
clamp close to the t est obj ect. If the detected volt age
is >110V AC , the met er will beep and the NCV indi cator
will flash.
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5. Specifications
5.1 General Spec ifica tions
• Safety rating: C AT III 600V, pollution degree 2
• Max. operating a ltitu de: 2000m
• Operating temp eratu re: 0~40°C, <80% RH
• Storage temper ature : -10~60°C, <70% RH
(battery remov ed)
• Temperature coefficient: 0.1 accura cy/°C
(<18°C or >28°C)
• Max. voltage bet ween te rminals and
ground: 600V DC or AC r ms
• Sample rate: app rox. 3 ti mes/sec
• Display : 3 ½ digit L CD (max . display: 1999)
• Over-range ind icati on: display only shows “1 ”
• Low battery indi catio n: when battery voltage d rops
below operatin g volta ge,“ ”symbol appears on t he
display
• Polarity indic ation: automatically displ ays “-“
• Power: 3x 1.5V AAA batteries
• Dimensi ons: 19 8mmX79mmX38mm
• Weigh t: approx. 194g (with battery)
• Max. jaw opening : 26mm
5.2 Tech nical S pecifications
Accuracy: ±(% of r eadin g + digits), 1 year warrant y.
Ambient temp: 18 °C~28 °C, humidity: <75%.
Temperature coefficient: 0.1 accura cy/°C
(0°C~18°C or 28° C~40° C)
For AC current measu remen t, keep the conductor in the
center of the clam p; othe rwise the reading can dev iate
as much as 1.5% of act ual mea surement.
5.2.1 DC Voltag e
- Input impedanc e: 10M
- Overload prote ction : 600V DC or AC rms
- Max. input volta ge: 600 V DC
600V
1V
±(1.0% reading +3 dgt)
Range
Resolution
Accuracy
mark
mark
mark
conductor
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2A
0.001A
Range
Resolution
Accuracy
20A 0.01A
±(2.0% reading +10 dgt)
200A
1A
±(2.0% reading +5 dgt)
2kΩ 1Ω
Range
Resolution
Accuracy
±(1.0% reading +5 dgt)
0.001V
Range
Resolution Function
Shows app rox. fo rward
biased vo ltage d rop
Range
Function
If the measured re sista nce is less than 70Ω ,
the meter ’s buzzer will sou nd.
5.2.3 AC Current
- Frequency rang e: 50Hz~60Hz
- Max. input curre nt: up to 1 20% of full scale for no
more than 60 secon ds.
- Response: Average; calibrated to rms s ine wav e.
5.2.4 Resistan ce
- Open circuit vol tage: a pprox. 2.0V
- Overload prote ction : 250V DC or AC rms
5.2.5 Diode Tes t
- Forward DC curre nt: app rox. 1mA
- Reverse DC volta ge: app rox. 3.5V
- Overload prote ction : 250V DC or AC rms
5.2.6 Continui ty
- Open circuit vol tage: a pprox. 2.7V
- Overload prote ction : 250V DC or AC rms
6.Maintenance
6.1 General Main tenan ce
This section pro vides basic maintenance prin ciple s,
includi ng clea ning and battery replacement . Do not
attempt to do any re pair or c alibration to the meter
unless you are exp erienced maintenance perso nnel.
Remove test lead s from me ter before opening the
battery cover to a void da mage or injury.
WARNING
Use a damp cloth and a s mall amount of detergent to
clean the meter re gularly. Do not use abra sives o r
chemical solve nts. Di rty or wet input jacks can affect
reading s.
To clean the in put jac ks:
1. Turn off meter and remove test leads.
2. Wipe any debris o ff input 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 prevent cross
contaminatio n.
Protection imp airme nt if used in a manner not
specified by the m anufa cturer.
WARNING
5.2.2 AC Voltage
- Input impedanc e: 10M
- Overload prote ction : 600V DC or AC rms
- Max. input volta ge: 600 V AC rms
- Frequency rang e: 50Hz~60Hz
- Response: Average; calibrated to rms s ine wav e
600V
1V
±(1.5% reading +10 dgt)
Range
Resolution
Accuracy
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00-05-3290
7. Accessories
User ’s manual
Test leads
Carry case
AAA batteries (1.5 V)
1
2
3
4
1 piece
1 pair
1 piece
3 pieces
Replace test lea ds if lea ds become damaged or worn .
Use meet EN 61010-031 standard, rated CAT III 600V, or
better test leads.
WARNING
6.2 Replacing The Batteries
WARNING
To avoid e lectr ic shock, make sure that th e test
leads have been cl early m ove away from the
circuit under me asure ment before opening the
battery cover of t he mete r.
5.1.1 If the sign “ ” appears, it means that the
bat terie s should be replaced.
5.1.2 Loose n the fi xing screw of the bat tery cover an d
rem ove it.
5.1.3 Repla ce the exhaus ted batteries with new ones.
5.1.4 Put the battery co ver back and fix it again to its
ori gin form.
Note:
Do no t reverse the polarity of the batte ries.
WARNING
Do not mix ol d and new batterie s. Do not mix
alkalin e, standard (carbon-z inc), o r rechargeable
(n i-cad , ni-mh, etc) batt eries.
6.3 Replacing Test Leads
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