Mastech MS2140A User Manual

MS2140A

Dual display digital

clamp meter

CAT ll 1000V

A~

Hz

MS2140A

T-RMS

Inrush

TEM P

Hz

μA

Ω

A

V

REL

ZERO

FUNC
INRUSH

HOLD

RANGE

MIN

MAX

COM

Temp μAHz

ΩV

RELINP MAX MIN

°C%
kHz

°F

µmVA
nµmF

MkΩHz

AUTO

K-T

NCV

MAX

1000V

Press 2Sec

CAT lll 600V

600A

TRMS
AutoRange

C

US

intertek
3080912

CONTENTS CONTENTS

1. Safety Information.............................1

1.1 Preparation..............................................1

1.2 Usage.......................................................2

1.3 .....................3 Safety symbols on the meter

1.4 Maintenance............................................4

2. ................4Features and Components

2.1 ............................................5 Components

2.2 ................................7Buttons and switches

2.3 ..................................7Display Description

3. Specification.....................................9

3.1 ..............................9General Specifications

3.2 ..........................10Technical Specifications

4. .............................16Operations Guide

4.1 ...........................................16Display Hold

4.2 ..............................16Manual Measurement

4.3 ........................16Backlight and Clamp light

4.4 ................17 Maximum/Minimum recording

4.5 ..................................17Function switching

4.6 ...............................................17ZERO/REL

5. Maintenance......................................24

5.1 ..........................24Replacing the batteries

5.2 ...........................25Test Leads Replacement

6. .......................................25Accessories

4.7 ...................................................18INRUSH

4.8 ..........................................18Auto Power Off

4.9 .............................18Measuring Preperation

4.10 .............................19Current Measurement

4.11 .............................19Voltage Measurement

4.12 ......................20Frequency and Duty Cycle

4.13 .............................................20Resistance

4.14 ..............................................21Diode Test

4.15 ...............................................21Continuity

4.16 ...........................................22Capacitance

4.17 ..................22Inrush Current Measurement

4.18 ...........................................23Temperature

4.19 ........................23μA Current Measurement

4.20 ...................23NCV Sensitivity and settings

01 02

1. Safety Information

This m eter ha s met IEC 61010 -1 and IEC-61010-2-03 2
stan dards w ith an ov ervol tage category of 600V CAT III
and a polluti on degr ee of 2. Fo llow safe operation
procedure s to ensu re the lo ng life and safe use of this
instrumen t.

WARNING

1.1 Preparation

1.1. 1 When us ing the m eter, fo llow the following
safe ty rule s:

-Take pr ecaut ions to p reven t electrical shock

-Do no t misus e the ins trume nt

1.1. 2 Check t he mete r and acc essories thoroughly
befo re usin g.

1.1. 3 Check t o see if th e meter o r any components
were d amage d durin g shipm ent.

1.1. 4 Inspe ct test l eads an d probes for cracks, brea ks
or cra zes on th e insul ation b efore using the meter.

1.1. 5 Use tes t leads p rovid ed with the unit. If
nece ssary, rep lace te st leads with identical
spec ifica tions .

1.2 Usage

1.2. 1 Turn the r otary s witch t o the required function
and ra nge to be m easur ed.

1.2. 2 Never u se the me ter to me asure voltages that
migh t excee d 600V DC /AC abo ve earth ground.

1.2. 3 Always b e caref ul when w orking with voltages
abov e 60V DC or 3 0V AC RMS. K eep fin gers
behi nd the pr obe bar riers w hile measuring.

1.2. 4 Th e “ ” symbo l next to t he input lead shows
that t he inpu t volta ge or current should not
exce ed the sp ecifi ed valu e in order to protect the
inte rnal ci rcuit f rom dam age.

1.2. 5 Choos e the hig hest ra nge when the value to be
meas ured is u nknow n.

1.2. 6 Remov e test le ads bef ore switching functio ns on
the ro tary sw itch.

1.2. 7 Do not pe rform r esist ance, capacitance, di ode
and co ntinu ity mea surem ents on powered circuit s.

1.2. 8 Never c onnec t the tes t leads across a voltage
sour ce whil e the rot ary swi tch is in the resistance,
diod e or cont inuit y mode. D oing so can damage
the me ter.

1.2. 9 Power o ff t he circ uit and d ischarge capacitors
befo re test ing cap acita nce.

1.2. 10 Do not p lace th e meter i n any environment with
high p ressu re, hig h tempe rature, dust, ex plosi ve
gas or v apor.

1.2. 11 St op usin g the met er if any f ailure or abnormal
func tion is o bserv ed.

1.2. 12 Do not u se mete r unles s battery cover is in place
a secu red.

TO REDUC E THE RIS K OF FIRE , ELECTRICAL
SHOC K, PROD UCT DAM AGE OR PE RSONAL
INJU RY, PLEA SE FOLL OW THE SA FETY
INST RUCTI ONS DES CRIBE D IN THE USER
MANUAL. REA D THE USE R MANUA LS
BEFO RE USIN G THE MET ER.

03 04

1.3 Safety symbols on the meter

Impo rtant s afety i nform ation; please refer to

user manual

High voltag e

Complianc e with re quire ments for double

insu latio n

Refe rs to the i mpuls e withs tand voltage

protectio n level i n accor dance with IEC-61010- 1

stan dard ov ervol tage (i nstallation) catego ry III,

pollution d egree 2 .

Mete r compl ies wit h Europ ean Community

(CE) standa rds

Earth groun d

1.4. 1 To avo id elec tric sh ock or pe rsonal injury, repairs
or ser vicin g not cov ered in t his manual should be
perf ormed o nly by qu alifi ed personnel.

1.4. 2 Remov e test le ads bef ore opening battery cov er

1.4. 3 To avo id inco rrect r eadin gs causing electric
shoc k or pers onal in jury, when low battery
symb ol “ ”app ears re place batteries immed iatel y.

1.4. 4 Th e meter c an be cle aned wi th a soft cloth to
remo ve any oi l, grea se or gri me. Do not use
liqu id solv ent or de terge nt.

1.4. 5 When th e instr ument i s not in use, turn rotary
swit ch to “OF F”

1.4. 6 If the in strum ent is no t to be used for an extended
peri od of tim e, remo ve the ba tteries to preve nt
dama ge to the i nstru ment.

1.4 Maintenance

2. Features and Components

The CM 660 is a po rtabl e, hand -held yet professiona l
mete r that fe ature s an LCD wi th backlight, overloa d
protectio n and low b atter y indicator. These meters ar e
easy to use wit h one han d, suit able for professional
users or amat eurs, a nd idea l for school or home use.

CAT III

1.2. 13 Avoid dir ect sun light , exposing batteries to
humi dity, any st rong ma gnetic field, or high
temp eratu res to en sure the extended life of
the me ter.

-Aut o and man ual ran ge

-Reading Ho ld func tion

-Max m easur ement

-Min m easur ement

-Fre quenc y in clam p mode

-Aut o power o ff

-Relative m easur ement

- Inru sh meas ureme nt

05 06

(1) No n-Con tact Vol tage de tection sensor
(2)N CV indi cator
(3)Wor k light
(4)R otary S witch
(5)F uncti on butt ons
(6)I nput so ckets
(7)C lamp tr igger
(8)C lamp: f or curr ent mea surement

2.1 Components

1

2

3

4

5

6

7

8

CAT ll 1000V

A~

Hz

MS2140A

T-RMS

Inrush

TEM P

Hz

μA

Ω

A

V

REL

ZERO

FUNC
INRUSH

HOLD

RANGE

MIN

MAX

COM

Temp μAHz

ΩV

RELINP MAX MIN

°C%
kHz

°F

µmVA
nµmF

MkΩHz

AUTO

K-T

NCV

MAX

1000V

Press 2Sec

CAT lll 600V

600A

TRMS
AutoRange

C

US

intertek
3080912