Mastech MS2026R Assembly instructions

CONTENTS PAGE
SAFETY INFORMATION……………………...
SYMBOL EXPLANATION …………………….
SAFETY PRECAUTIONS……………………..
MAINTENANCE………………………………..
GENERAL DESCRIPTION……………………
PANEL DESCRIPTION………………………..
FORWARD LAYOUT…………………………..
OPERATING INSTRUCTIONS……………….
SPECIFICATIONS……………………………..
AUTO POWER OFF…………………………..
REPLACING THE BATTERY…………………
ACCESSORIES………………………………..
1
2
2
4
4
5
8
9
13
17
18
19
SAFETY INFORMATION
The digital clamp meter has been designed
according to IEC1010 1 and IEC1010 2 032
concerning safety requirements for electrical
measuring instruments and hand-held current
clamps with double insulation overvoltage category
1000V CAT II 600V CAT III and pollution 2.
This meter complies with the requirements of the
following European Community Directives:
89 / 336 / EEC (Electromagnetic Compatibility) and
73 / 23 / EEC (Low Voltage) as amended by 93 /
68 / EEC (CE Marking).
However, electrical noise or intense electromag-
netic fields in the vicinity of the equipment may
disturb the measurement circuit.
Measuring instruments will also respond to
unwanted signals that may be present within the
measurement circuit.
Users should exercise care and take appropriate
precautions to avoid misleading.
1 

SYMBOL EXPLANATION
Important safety information, refer to the
operating manual.
Dangerous voltage may be present.
Earth ground.
Double insulation (Protection class 1000V
CAT II 600V CAT III).
SAFETY PRECAUTIONS
Follow all safety and operating instructions to
ensure maximum personal safety during the
operation and to ensure the meter is used safely
and is kept in good operating condition.
●
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Read the operating instructions thoroughly
and completely before operating your meter.
Pay attention to WARNINGS, which will
inform you of potentially dangerous proce-
dures. The instructions in these warnings
must be followed.
Always inspect your meter and test leads for
2 
●
●
●
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any sign of damage or abnormality before
every use. If any abnormal conditions exist
(i.e. broken test leads, cracked cases,
display not reading, etc.), do not attempt to
take any measurements.
Do not expose the instrument to direct
sunlight, extreme temperature or moisture.
Never ground yourself when taking electrical
measurements. Keep your body isolated
from ground by using dry clothing, rubber
shoes, rubber mat or any approved
insulating material.
You always are careful when working with
voltages above 60V dc or 30V ac rms. Keep
fingers behind the probe barriers while
measuring.
To avoid damages to the instrument, do not
exceed the maximum limits of the input
values shown in the technical specification
tables.
Never use the meter to measure voltages
that might exceed the maximum allowable
input value of any function.
3 

MAINTENANCE
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●
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Never touch exposed wiring, connections or
any live circuit when attempting to take
measurements.
Before opening the case, always disconnect
test leads from all energized circuits.
Never use the meter unless the back cover
is in place and fastened completely.
Do not use abrasives or solvents on the
meter. To clean it using a damp cloth and
mild detergent only.
Qualified and trained service technicians
should only perform calibration and repair of
the meter.
GENERAL DESCRIPTION
The meter is an autorange professional clamp
meter with 5999 counts. For measuring DC and AC
voltage, AC current, Resistance, Capacitance,
Frequency, ADP, Diode, and Continuity Test with
battery operated.
There is the AC measurement to be RMS or TRUE
RMS about the meter. It is chosen as user buy.
4 
Otherwise, there is a radius lamp near the clamp, It
is lighted in measuring current.
PANEL DESCRIPTION
1.
2.
3.
Transformer jaws
Pick up the AC current flowing through the
conductor.
Rotary switch
Rotary switch is used to select functions.
HOLD button
When this button is pushed, the display will
keep the last reading and “ ” symbol will
appear on the LCD. Pushing it again returns
the meter to normal mode.
4.
MAX/MIN button
Press the button to enter the MAX/MIN
Recording Hold mode. The maximum,
minimum values are then reset to the
present input. The readings are stored in
memory. “ MAX ”or “ MIN ”annunciator
turns on to indicate what value is being
displayed. Hold this button for more than 3
seconds to return to the normal operating
mode.
5 

5.
6.
7.
8.
LCD display
“ VHz” jack
This is positive input terminal for volt,
resistance, diode, capacitance frequency,
ADP and Continuity test. Connection is
made to it using the red test lead.
“COM” jack
This is negative (ground) input terminal for
all measurements except current.
Connection is made to it using the black
test lead.
RANGE button
Press this button to select auto and manual
range. When a function with auto and
manual mode is selected, the meter enters
6 
9.
10.
11.
autorange at first. To change to manual
range, push this button once.
When the meter operates in manual ranging
mode, push this button to change range to
the higher one and hold this button for more
than 3 seconds to return to auto range mode
FUNC. button
In range, press this button to select
or or function. Different symbol of
function will appear on the LCD.
button
Press the button is used to turn the backlight
on. Press the button again is used to turn the
backlight off. To turn the backlight on again,
just press it once more.
When measuring current, press the button
the radius lamp near the clamp is lighted at
one time.
Rigger
Press the lever to open the transformer.
When the lever is released, the jaws will
close again.
7 

FORWARD LAYOUT
8 
OPERATING INSTRUCTIONS
DC VOLTAGE MEASUREMENT
1.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
2.
Set rotary switch at desired V position.
Connect the test lead tips in parallel with the
circuit to be measured. Be careful not to
touch any electrical conductors.
3.
4.
The polarity of the red lead connection will
be indicated along with the voltage value.
Read the measure result from the display.
AC VOLTAGE MEASUREMENT
1.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
2.
Set rotary switch at desired V~ position.
Connect the test lead tips in parallel with the
circuit to be measured. Be careful not to
touch any electrical conductors.
3.
Read the measure result from the display.
9 

AC CURRENT MEASUREMENT
1.
2.
3.
Set the rotary switch at desired A~ position.
Press the trigger to open transformer jaw
and to clamp one conductor only, making
sure that the jaw is firmly closed around the
conductor.
Read the measure result from the display.
RESISTANCE MEASUREMENT
1.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
2.
Set rotary switch at desired 
position. Push FUNC. button to select .
Connect the test lead tips in parallel with the
resistance in the circuit being measured.
3.
Read the measure result from the display.
NOTE:
1.
If the resistance being measured exceeds
the maximum value of the range or the input
is not connected, an overrange indication
“OL” will be display.
10 
2.
When checking in-circuit resistance, be sure
the circuit under test has all power removed
and that all capacitors have been discharged
fully.
CONTINUITY TESTING
1.
2.
3.
4.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
Set rotary switch at desired position.
Push FUNC. button to select .
Connect the test lead tips in parallel with the
resistance in the circuit being measured. If
continuity exists (i.e., resistance less than
40) built –in buzzer will sound.
DIODE TESTING
1.
2.
3.
4.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
Set rotary switch at desired position.
Push FUNC. button to select . The red
lead should be connected to the anode and
the black lead to the cathode of the diode.
The typical voltage drop should be about
0.6V for silicon diode or 0.3V for germanium
11 

diode. If the diode is reverse biased or there
is an open circuit the reading displayed will
be “OL”.
CAPACITANCE MEASUREMENT
1.
2.
3.
4.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
Set the rotary switch to position.
Connect test leads across the capacitor
under measurement and be sure that the
polarity of connection is observed. The
polarity of the red lead connection is positive
“+”.
Read the measure result from the display.
FREQUENCY MEASUREMENT
1.
2.
3.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
Set the rotary switch to Hz position.
Connect the test leads across the source or
load under measurement. The polarity of the
red lead connection is positive “+”.
12 
4.
Read the measure result from the display.
NOTE:
1.
2.
The signal amplitude must also be greater
than the sensitivity level.
Determine that the amplitude level of the
signal to be measured is not greater than the
input voltage limit (250V DC/AC rms.).
ADP MEASUREMENT
It is standby for user.
1.
2.
3.
Insert the black and red test leads into the
COM and VHz input terminals respectively.
Set the rotary switch toADP position.
DCV ≤ 600mV .
SPECIFICATIONS
Accuracy:
±% of reading ±number of least significant digits
at 18℃to 28℃, with relative humidity up to 75%.
All specifications assume less than 1 year since
calibration. Temperature coefficient:
0.1×specified accuracy/℃.
13 

GENERAL
Maximum voltage:
1000V CATII 600V CATIII
Altitude:
2000m
Display:
LCD 5999 counts,
Updates 2-3/sec
Ranging method:
Auto/manual range mode
Polarity indication:
“” display for negative
polarity
Overrange indication:
LCD will display “OL”
Low battery:
“” will appears on LCD
Jaw capability:
40mm,Max conductor size
Power:
Battery 1.5V3
Size AAA
Size:
225mm×86mm×32mm
Weight:
Approx. 330g
Operating:
5℃to 35℃
Storage temperature:
10℃to 50℃
14 
DC VOLTAGE
Range
Resolution
Accuracy
6V
1mV
（0.8%of rdg +5 digits）
60V
10mV
600V
0.1V
1000V
1V
（1.0%of rdg +2 digits）
Input Impedance: 10M
Overload Protection: 1000V DC or 700V AC RMS
AC VOLTAGE
Range
Resolution
Accuracy
6V
1mV
（1.2%of rdg +5 digits）
60V
10mV
600V
0.1V
700V
1V
Input Impedance: 10M
Frequency range: 40Hz to 400Hz
Overload Protection: 1000V DC or 700V AC RMS
AC CURRENT
Range
Resolution
Accuracy
600A
0.1A
（2.5%of rdg +5 digits）
1000A
1A
（3.0%of rdg +5 digits）
15 

Frequency range: 50Hz to 60Hz
Overload Protection:
120% ranges for 60 seconds max
RESISTANCE
Range
Resolution
Accuracy
600
0.1
（1.0% of rdg +3 digits）
6k
1
60k
10
600k
0.1k
6M
1k
60M
10k
（5.0% of rdg +5 digits）
Overload Protection:
250V dc or rms, ac for all ranges
CAPACITANCE
Range
Resolution
Accuracy
600nF
0.1nF
（4.0%of rdg +5 digits）
6uF
1nF
60uF
10nF
600uF
0.1uF
1000uF
1uF
Overload Protection:
250V dc or rms, ac for all ranges
16 
FREQUENCY
Range
Resolution
Accuracy
40Hz
1Hz
（0.1% of rdg +1digit）
600Hz
1Hz
6kHz
1Hz
60kHz
10Hz
100kHz
0.1kHz
Measurement range:
1V to 10V rms, 40Hz to 100kHz
ADP
Range
Resolution
Accuracy
600mV
0.1mV
（3.0%of rdg +5 digits）
AUDIBLE CONTINUITY AND DIODE
Range
Description
If continuity exists (about less than
40), built-in buzzer will sound.
Show the approx, Forward voltage of
the diode.
AUTO POWER OFF
To extend the battery life, Auto Power Off function
is provided. If no key operations of range changing
17 

happen about 10 minutes, the meter will be turned
off automatically. To turn it on, pushing the FUNC.
Button only.
REPLACING THE BATTERY
WARNING
To avoid electrical shock or personal
injury, remove the test leads and any
input signals before replacing the
battery. Replace only with same type
of battery.
When the electrical tester displays the “ ” mark
or the backlight be not very lit, the battery must be
replaced to maintain proper operation. Use the
following procedure to replacing the battery:
1.
2.
The Rotary Switch is used to select OFF.
Disconnect test leads from any live source
and remove the test leads from the input
terminals.
18 
3.
4.
5.
Remove screws on the battery cover and
open the cover.
Remove the exhausted battery and replace
with three new 1.5V size AAA batteries.
Place battery cover and secure by a screw.
CAUTION
Using this appliance in an environment
with a strong radiated radio-frequency
electromagnetic field (approximately
3V/m) may influence its measuring
accuracy.
ACCESSORIES
Operator’s instruction manual
Set of test leads
Gift box
Battery 1.5V3 Size AAA
19 