Mastech MS2109A User Manual

MS2109A

User Manual

AC/DC Clamp Meter

V

Ω

Hz%

TEMP

MS2109A

AC/DC CLAMP METER

NCV

SEL

REL Hz%

MAX/MIN

/

60

CONTENTS

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

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

CONTENTS

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

1.3 Signs and Labels................................3

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

2. Description….................................4

2.1 Part Name..........................................5

2.2 Switch and Button Description..............7

2.3 LCD Display........................................8

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

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

3.2 Technique Data...................................9

4. Operating guidance.......................15

4.1 Reading Hold....................................15

4.2 Measuring Range Switch....................15

4.3 Frequency/Duty Ratio Switch.............15

4.4 Maximum/Minimum

Measurement Choice....................16

4.5 Function Choice..................................17

4.6 Relative Measurement and

Surge Measurement..........................17

4.7 Back Light and Clamp Head Light..........17

4.8 Automati c Power-Off

4.9 Measurement Preparation....................18

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

4.11 Volt age Measurement........................20

4.12 Frequency and
Duty Ratio Measurement

4.13 Resistance Measurement..................23

4.14 Diode Test

4.15 Circuit Co ntinuity test

4.16 Capacita nce Measurement................25

5. Maintenance...................................27

5.1 Replace Battery...................................27

5.2 Replace Probe

6. Accessories....................................27

........................24

........................................24

..................21

............................18

4.17 NCV Measurement............................26

4.18 Temp erature Measurement................26

....................................27

01

02

1. Safety Information

1.2 Usage

Please particularly not e that inappropriate use
may cause shock or damage to th e meter. When
using the me ter, comply with common safety
procedur es and complete ly follow the safety
measures in this operatio n manual.
To make full use of the met er's functions and
ensure safe operation, pl ease carefully read and
follow the p rocedures in th e operation manual.

The meter me ets GB/T 13978-92 digital multimeter
general technology cond itions, GB479 3.1-1995 (IEC
61010-1, IEC 61010-2-03 2) electronic m easurement
instrument safety requi rements with secondary pollution
and over-voltage standa rd of CAT III 600V.
Please follow the safety op eration guide lines to ensure
the safe use of meter.
The meter will provide sati sfactory service to you if you
use and protect it appropri ately.

Warning

1.1 Preparati on

1.1.1 When using the meter, the user should comply with
standard s afety rules:

- General sh ock protectio n

- Prevent mi susing the mete r

1.1.2 After r eceiving the meter, please check for d amage
that may hav e occurred duri ng transportation.

1.1.3 If the m eter is stored an d shipped under h ard
conditio ns, please conf irm that the meter is
undamage d.

1.1.4 Probe should be in good c ondition. Bef ore use,
please che ck whether the pr obe insulation is
damaged, w hether metal wi re is bare.

1.1.5 Use th e probe table pro vided with the me ter to
ensure saf ety. If necess ary, replace the probe
with anoth er identical pr obe or one with the same
specific ation.

1.2.1 When using the meter, select the right funct ion
and measur ing range.

1.2.2 Don't measure when ex ceeding the max imum
value in eac h measuring ran ge.

1.2.3 When measuring a circ uit with the meter
connecte d, do not touch the p robe tip (metal part).

1.2.4 When measuring, if th e voltage to be measured
is more than 6 0 V DC or 30 V AC (RMS), always
keep your fi ngers behind th e finger protection
device.

1.2.5 Do not measure voltag e greater than AC 600V.

1.2.6 In the m anual measuri ng range, when th e value
to be measur ed is not known in ad vance, choose
the highes t measuring ran ge to begin, and then
graduall y select lower ra nges until the correct
range is ide ntified.

1.2.7 Befo re rotating con version switch to change
measurin g function, rem ove probe from the
circuit to b e measured.

1.2.8 Don't measure resis tors, capacitors, diodes and
circuits t hat are energiz ed.

1.2.9 During the test of curr ent, resistors, capacitors,
diodes and c ircuit connec tions, do not allow the
meter to con nect with volta ge source.

03

04

1.3 Part name

Note (Important safety information. Refe r to the
operation manual).

Dangerous electric conductor.

Double insulation protecti on (cla ss II).

CAT III Ac cordi ng to pul se volt age tol eranc e prote ction

level provided by IEC 61010-1 standard
overvoltage (installation) level III and grade
2 for pollution.

The meter complies with EU standard

Ground (earth)

1.4 Maintenan ce

1.4.1 Don't try to open the meter bottom case to adjust or
repair. Such operations only can be made by
qualified technicians who fully understand the
meter and electrical shock hazard.

1.4.2 Before opening the meter bottom case or battery
cover, remove probe from the circuit to be measured.

1.4.3 To avoid wrong readings and potential electric
shock, when “ ”appears on the meter display,
replace the battery immediately.

1.4.4 Clean the meter with damp cloth and mild
detergent. Do not use abrasives or solvents.

1.4.5 Power off the meter when it is not used. Switch the
transfer switch to OFF position.

1.4.6 If the meter is not used for long time, please take
the battery out to prevent the meter being damaged.

1.2.10 Don't measure capa citance unles s the capacitor
is dischar ged completel y.

1.2.11 Don't use the me ter in explosiv e gas, vapor or
dusty envi ronments.

1.2.12 If yo u find any abnorm al condition or failure on
the meter, stop using the meter and have it
serviced b y a qualified tec hnician.

1.2.13 Unless the meter bot tom case and the battery
cover are co mpletely fast ened in their original
places, do n ot use the meter.

1.2.14 Don't store or use the m eter in direct sunlight,
high tempe rature or high hu midity.

2. Description

- The meter is a portable, professional measuring
instrument with LCD display and back light for easy
reading by users. Measuring range switch is operated
by single hand for easy operation. The meter has
overload protection and low battery indicator. It is an
ideal multifunction meter for professionals, factories,
schools, fans and family use.

- The meter is used to measure AC current, DC current,
voltage, DC voltage, frequency, duty ratio, resistance,
capacitance, circuit connections, diodes, non-contact
voltages and temperatures.

- The meter has an auto measuring range function.

- The meter has a reading hold function.

- The meter has a max. measuring function.

- The meter has a min. measuring function.

05

06

(1) Current clamp head: used for curren t measu remen t.
(2) NCV indicator
(3) Key
(4) LCD display
(5) Common end jack
(6) Resistance, capacitance, voltage, fr equen cy, diode,
continuity and temperature input jack
(7) Knob
(8) Clamp head center position
(9) NCV sense position

2.1 Part name

- The meter has a clamp head frequency measurement
function.

- The meter has an auto power-off function.

- The meter has a relative measuring function.

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V

Ω

Hz%

TEMP

MS2109A

AC/DC CLAMP METER

NCV

SEL

REL Hz%

MAX/MIN

/

60