Mastech MS2225A Operation Manual
Digital Clamp Power Meter
Operation Manual
MS2225A
CAT III
CONTENTS CONTENTS
1. Safety information ..............................................01
1.1 Preparation ...............................................01
1.2 Use ...........................................................02
1.3 Mark ..........................................................03
1.4 Maintenance .............................................04
2. Description .........................................................04
2.1 Name of parts ...........................................06
2.2 Descriptions of switch, button and input jack
..................................................................07
2.3 LCD display ..............................................09
3. Specification .......................................................11
3.1 General .....................................................11
3.2 Technical specifications ............................12
3.2.1 Alternating current .........................12
3.2.2 Inrush current ................................12
3.2.3 DC voltage ....................................13
3.2.4 AC voltage .....................................13
3.2.5 Frequency .....................................14
3.2.6 Duty ratio .......................................15
3.2.7. Resistance ...................................16
3.2.8 Circuit continuity test .....................16
3.2.9. Capacitance .................................16
3.2.10 Diode test ....................................17
3.2.11 Single-phase active power ..........17
3.2.12 Single-phase apparent power .....18
3.2.13 Single-phase reactive power .......18
3.2.14 Power factor ................................19
3.2.15 Harmonics measurement ............19
4 Operation Guide .................................................19
4.1 Reading holding ........................................19
4.2 Manual range ............................................20
4.3 Switchover of frequency and duty ratio .....20
4.4 Selection of maximum/minimum value
measurement ...........................................21
4.5 Function switching ....................................21
4.6 Measurement of relative value .................22
4.7 LINK measurement ...................................22
4.8 REC function ............................................23
4.9 ▼function ..................................................23
4.10 ▲function ................................................24
4.11 INRUSH measurement ...........................24
4.12 Back-light and clamp lighting .................24
4.13 Automatic shutdown ...............................25
01
4.14. Measurement preparation ......................25
4.15 AC current measurement ........................26
4.16. Voltage measurement ............................28
4.17 Measuring frequency and duty ratio ........30
4.18 Resistance measurement .......................34
4.19 Diode test ................................................36
4.20 Circuit continuity test ...............................38
4.21 Capacitance measurement .....................40
4.22 Measurement of inrush current ...............42
4.23 NCV measurement ................................. 44
4.24 Active power measurement .....................46
4.25 Apparent power measurement ................48
4.26 Power factor measurement .....................50
4.27 Phase angle measurement .....................52
4.28 Harmonics measurement (voltage signal)
..............................................................53
4.29 Harmonics measurement (current signal)
...............................................................56
5 Maintenance .......................................................58
5.1 Battery replacement ..................................58
5.2 Replacing Test Leads.............................. 58
6 Attachments ........................................................59
CONTENTS
1. Safety information
Please pay special attention when using this meter,
improper use may result in electric shock or damage to the
meter. Please follow the common safety rules, and fully
comply with the safety precautions specified in the user
manual.
To make full use of the meter, and ensure safe operation,
please read carefully and follow the application methods in
this specification.
WARNING
This meter conforms to IEC 61010 Safety Requirements of
Electronic Measuring Instrument. It causes secondary pollution,
and the over-voltage standard is CAT IV 600 V and
CAT III 1000V. Please abide by the safe operation guidance to
ensure the safety use of the meter. Appropriate use and
protection of the meter will bring you satisfactory service
1.1 Preparation
1.1.1 The users must comply with the following safety
regulations when using the meter:
- General electric shock protection
- Prevent the misuse of the meter
1.1.2 After receiving the meter, check whether it is damaged in
the transportation.
1.1.3 Check and verify whether the meter is damaged after
being stored and shipped in poor condition.
1.1.4 The probe must be in good condition. Check whether the
insulation of the probe is broken and the metal wire of the
conductor is exposed before using.
1.1.5 The probe provided with the meter can ensure the safe
use, and it must be replaced with the same probe or the
probe of the same grade, if necessary.
1.2 Use
1.2.1 You must use the meter according to requirements of
correct functions and measuring range.
1.2.2 Do not exceed the indicated value of protection scope of
each measuring range during the measurement.
1.2.3 Do not touch the top of the probe when the meter is
connected for measuring the circuit.
1.2.4 During the measurement, if the measured voltage is
higher than 60V DC or 30 V AC (effective value), you
should keep your fingers behind the probe protector all
the time.
1.2.5 Do not measure the voltage when the AC voltage
between the measuring terminal and the ground is
greater than 750 V.
1.2.6 Select the highest range of the manual range if you don't
know the measured value in advance.
1.2.7 Remove the probe from the measured circuit before
rotating the change-over switch to change the measuring
function.
1.2.8 Do not perform the live line measurement for the
resistance, capacitance, diodes and circuit continuity.
1.2.9 Do not connect the meter to the voltage source during
the current, resistance, capacitance, diodes and circuit
continuity test.
1.2.10 Do not measure the capacitance before the capacitor is
fully discharged.
1.2.11 Do not use this meter near the explosive gas, steam or
dust.
1.2.12 In case of any abnormality or fault, please stop using
the meter.
1.2.13 Do not use this meter, unless the bottom case and the
battery cover are fully fastened in situ.
1.2.14 Do not store or use this meter in direct sunlight, high
temperature, or high humidity.
1.3 Mark
Note-Important safety information, refer to the
instruction manual.
Application around and removal from UNINSULATED
HAZARDOUS LIVE conductors is permitted.
Complies with European (EU) safety standards
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
Earth (ground) TERM INAL
CAT III
It i s applica ble to test a nd measur ing circuits
co nnected to the distributi on part of the
bu ilding's low-v oltage MA INS insta llation .
Equipment protected throughout by double
insulation or reinforced insulation.
Alternating current
Both direct a nd al terna ting cu rrent
MEASUREMENT CATEGORY IV is applicable to
test and measuring circuits connected at the source
of the building’s low-voltage MAINS installation.
CAT IV
02 03
04 05
1.4 Maintenance
1.4.1 Do not try to open the bottom case of the meter for
adjustment or repair. These operations can only be
performed by the technicians who understand the meter
and the shock hazard adequately.
1.4.2 Please remove the probe from the measured circuit
before opening the bottom case or the battery cover of
the meter.
1.4.3 In order to avoid the electric shock caused by the
incorrect reading, when the meter displays ""
replace the battery immediately.
1.4.4 Use wet cloth and mild detergent to clean the meter, and
do not use the abrasive or solvent.
1.4.5 Turn off the power of meter when you don't use it, rotate
the range switch to the OFF gear.
1.4.6 Take off the battery to prevent the damage to the meter,
if you do not use it for a long time.
2. Description
-MS2225A single-phase clamp-type harmonic power meter is
hand-type intelligent power measuring meter, which combines
the digital multimeter and power measurement with Bluetooth
function. The range switch with one-handed performance is
convenient for the measurement, and this meter can perform
the functions of overload protection and low battery indicator.
- The meter can be used for the measurement of the
alternating current, alternating voltage, direct voltage,
frequency, duty ratio, resistance and capacitance and circuit
continuity, diode test, non-contact voltage detection, as well as
the measurement of the active power, reactive power,
apparent power, power factor, harmonics measurement and
phase angle measurement.
- The meter supports the auto range and manual range.
- The meter supports reading holding.
- The meter supports maximum measurement.
- The meter supports minimum measurement.
- The meter supports relative measurement.
- The meter supports Bluetooth.
- The meter supports data storage.
- The meter supports back-light and clamp lamp.
- The meter supports automatic shutdown.
- The meter supports low voltage indicator.
2.1 Name of parts
(1)
Current clamp: for current measurement.
(2)
Clamp lamp
(3)
Faceplate
(4)
Trigger
(5)
Button for data storage and switch of auto and
manual range
(6)
Button for maximum/minimum selection
(7)
Button for function switch
(8) Button for reading holding/back-light
(9)
Button for frequency and duty ratio measurement,
inrush current and up
(10)
Button for Bluetooth function, relative
measurement and down
(11) Change-over switch
(12) NC V indic ator li ght
(13)
LCD display
(14)
Input jack of resistance, capacitance, voltage,
frequency, di ode and c ontin uity.
(15)
Jack of common terminal
12
11
1
2
3
4
5
6
7
8
14
9
10
13
15
2.2 Descriptions of switch, button and
input jack
FUNC button: for switching the measurement function.
B.L/HOLD button: the readings will be held by the short press,
and the back-light will be turned on by long press. The backlight and clamp lamp will be turned on at the same time by
pressing the B.L/HOLD button in the current gear and in the
power gear on the current interface.
REC/RANGE button: short press for switching between auto
and manual range mode, and long press for data storage.
LINK/REL/▼ button
1) Long press for validating Bluetooth in all gears.
2) Short-press in the harmonic measurement interface at KW
and W gears to scroll down, and to switch between the 1st
06 07
08 09
harmonic and 20th harmonic. At the KW and W gears, shortpress the function key in the maximum/minimum value
measurement interface to scroll down, and switch and display
the maximum/minimum value.
3) Short press on alternating current, AC/DC voltage and
capacitance for relative value measurement mode.
Hz%/INRUSH/▲button
1) Short press on alternating current, alternating voltage and
HZ% gear for the switch among alternating current or
alternating voltage, frequency and duty ratio.
2) Short-press on the harmonic measurement interface at KW
and W gears to scroll up, and switch between the 1st harmonic
and 20th harmonic. At the KW and W gears, short-press the
function key in the maximum/minimum value measurement
interface to scroll up, and switch and display the
maximum/minimum value.
3) Long press on the alternating current gear for switching to
the measurement mode of inrush current.
MAX/MIN button: for the switch between the
maximum/minimum measurement.
OFF gear: for power off.
INPUT jack: input terminal of voltage, resistance, frequency,
duty ratio, capacitance, diode and circuit continuity.
COM jack: common terminal of voltage, resistance, frequency,
duty ratio, capacitance, diode and circuit continuity.
Change-over switch: for selection of functions and ranges.
2.3 LCD display
Alternating current/Direct current
Diode and continuity
Auto range mode
Status of maximum measurement
Status of minimum measurement
Status of relative measurement
Status of automatic shutdown
LOW BATT ERY
Status of reading holding
HOLD
HZ
Frequency measurement
Percentage (duty ratio)
Millivolt, volt (voltage)
Ampere (electric current)
Nano farad, microfarad and millifarad
Ohm, kilo-ohm and megohm (resistance)
Hertz, kilohertz and megahertz (frequency)
Non-contact voltage detection
Watt and kilowatt (active power)
Unit of apparent power
Reactive power
Phase angle
Peak value measurement
Total harmonic distortion
Total harmonic distortion F (relative to
fundamental wave)
Total harmonic distortion r (relative to
actual effec tive va lue)
Power factor
Phase
Status of inrush current measurement
Data recorder
Bluetooth function
Leading phase angle
Lagging phase angle
Hour (time unit)
Negative sign
W,KW
VA, KVA
Var, KVAr
O
PEAK
THD
H01F
H01r
COSФ
Phase
INR
REC
LEAD
LAG
h
3. Specification
Recalibrate the meter under the conditions of 18°C~28°C
and the relative humidity less than 75%, with the
calibration cycle of 1 year.
3.1 General
Auto range and manual range.
Full-scale overload protection.
Maximum allowable voltage between measured end
and the ground: 1000 V DC or 750 V AC .
Worki ng heig ht: les s than 2, 000 m.
Displayer: LCD.
Maximum displayed value: 5999 dgt.
Polar indication: self-indicating, "-" means negativ e
polarity.
Over-range display: '0L' or '-0L'.
Sampling time: around 3 times/s.
Unit display: display the functions and the unit of
electric quantity.
Time of automatic shutdown: 30 minutes.
Power supply: DC power supply 9 V.
Type of battery: NEDA 1604 or 6F22.
Under-voltage indication of battery: LCD display
symbol.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Temperature coeffic ient: l ess tha n 0.1×d egree o f
accuracy/°C.
10 11
16
Worki ng temp eratu re: 18° C~28° C.
Storage temperature: -10°C~50°C.
17
1819Dimension: 238×92×50 mm.
Weigh t: arou nd 420 g (i nclud ing bat tery) .
3.2 Technical specifications
Environmental temperature: 23±5°C relative
humidity: ≤ 75%
3.2.1 Alternating current
Range
Resolution
Accuracy
±(2.0% rdg+ 8 dgt)
60A 0.01A
600A 0.1A
1000A
1A
- Maximum input current: 1000A AC
- Frequency range: 40~400 Hz
3.2.2 Inrush cu rrent
Range
Resolution
Accuracy
<60 A (fo r refer ence on ly)
±(5% rdg+ 60 dgt)
60A 0.01A
600A 0.1A
1000A
1A
Integral time: 100 ms; measurement range: 20~1000 A;
frequency range: 40~400 Hz
3.2.3 DC voltag e
Range
Resolution
Accuracy
±(0.5% rdg+ 5 dgt)
-Input impedance: 10M
-Maximum input voltage: 750 V AC (effecti ve valu e) or
1000 V DC.
6V
60V
600V
1000V
0.001V
0.01V
0.1V
1V
±(0.8% rdg+ 4 dgt)
3.2.4 AC voltage
Range
Resolution
Accuracy
±(0.6% rdg+ 4 dgt)
- Input impedance: 10M
- Maximum input voltage: 750 V AC (effecti ve valu e) or
1000 V DC.
- Frequency range: 40~400 Hz.
±(0.8% rdg+ 4 dgt)
6V
60V
600V
750V
0.001V
0.01V
0.1V
1V
Note:
Under the small voltage range, there might be reading o n
the meter before the probe is connected to the measured
circuit.
The above phenomenon is normal because the meter has
high sensitivity and it has no influence on the actual
measurement result.
12 13
3.2.5 Frequency
3.2.5.1 Frequ ency measurement with clam p
(at A g ear):
Range
Resolution
Accuracy
±(1.5% rdg+ 5 dgt)
99.99Hz
999.9Hz
0.01Hz
0.1Hz
- Measurement range: 10 Hz~1 kHz
- Range of input signal: ≥ 20A AC (t he inpu t curre nt is
increased with the measured frequency)
- Maximal input current: AC 1 000 A (e ffective value)
3.2.5.2 At V gear:
Range
Resolution
Accuracy
±(1.5% rdg+ 5 dgt)
99.99Hz
999.9Hz
9.999kHz
0.01Hz
0.1Hz
0.001kHz
- Measurement range: 10 Hz~10kHz
- Range of input voltage: ≥ 1 V AC (eff ectiv e value ) (the
input voltage is increased with the measured frequency)
- Input impedance: 10MΩ
- Maximum input voltage: 750 V AC (effecti ve valu e)
3.2.5.3 At HZ/DUTY gear:
Range
Resolution
Accuracy
±(0.3% rdg+ 5 dgt)
9.999Hz
99.99Hz
999.9Hz
9.999kHz
99.99KHZ
999.9KHZ
9.999MHZ
±(0.3% rdg+ 5 dgt)
0.001Hz
0.01Hz
0.1Hz
0.001kHz
0.01kHZ
0.1KHZ
0.001MHZ
- Overload protection: 1000 V DC or 750 V AC (effecti ve
value)
- Range of input voltage: ≥ 2 V (the input voltage is
increased with the increase of the measured frequency)
3.2.6 Duty ratio
Range
Resolution
Accuracy
±(3.0% + 3 )
0.1 - 99.9%
0.1%
- Frequency response: 10 ~ 1 kHz.
- Range of input current: ≥ 20 A A C (effective value)
-Maximal input current: AC 1000 A
3.2.6.1 At A gear (from the clamp):
3.2.6.2 At V gear:
- Frequency response: 10 ~ 10kHz.
- Range of input voltage: 1 V AC.
- Input impedance: 10MΩ
- Maximum input voltage: 750 V AC (effecti ve valu e)
- Frequency response: 10 ~ 10MHz.
- Range of input voltage: ≥ 2V AC ( effective value) (the
input voltage is increased with the measured frequency)
- Maximum input voltage: 250V AC (effe ctive v alue)
3.2.6.3 At HZ/DUTY gear:
14 15
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