Mastech MS2025C User manual

MS2025C
CAT III
1000V

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CONTENTS
1. Safety Information
1.1 Preliminary
1.2 Usage
1.3 Symbols
1.4 Maintenance
2. Description
2.1 Part Name
2.2 LCD Display
3. Specifications
3.1 General
3.2 Technical Indicators
4. Operating Guidance
4.1 Reading Hold
4.2 Relative Measurement
4.3 Manual Measuring Range Choice
4.4 Function Switch
4.5 Back light and
Clamp Head light
CONTENTS
4.6 Automatic Power-Off
4.7 Measurement Preparation
4.8 Current Measurement
4.9 AC Voltage Measurement
4.10 DC Voltage Measurement
4.12 Resistance Test
4.13 Diode Test
4.14 Circuit Continuity Test
4.15 Capacitance Measurement
4.16 Temperature Measurement
5. Maintenance
5.1 Replace Battery
5.2 Replace Probe
6. Accessories
4.17 NCV (non-contact voltage detection)
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4.11 Frequency and Duty Cycle

1.2.13 Unless the meter bottom case and the battery cover are
completely fastened completely, do not use the meter.
Be extremely careful when using this meter. Improper use of
this device can result in electric shock or destruction of the
meter. Take all normal safety precautions and follow the
safeguards suggested in this manual. To exploit full
functionality of the meter and ensure safe operation, please
read carefully and follow the directions in this manual. If the
equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may
be impaired.
WARNING
This meter is designed and manufactured according to safety
requirements of EN 61010-1, EN 61010-2-032,
EN 61010-2-033 concerning electronic measuring instruments
with a measurement CAT III 1000V and pollution degree 2 and
safety requirements for hand-held clamps for electrical
measurement and test.
1.1.3 If the meter is store and shipped under hard
conditions, please confirm if the meter is damaged.
1.1.4 Probe should be in good condition. Before use,
please check whether the probe insulation is
damaged and if the metal wire is bare.
1.1.5 Use the probes provided with the meter to ensure
safety. If necessary, replace the probe with another
identical probe or one with the same specification.
fter receiving the meter, please check for damage
that may have occurred during the transport.

1.3 Symbols
1.4 Maintenance
1.4.1 Don't try to open the meter bottom case to adjust or
repair. Such operations can only be performed by
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 causing electric shock,
when " " appears on the meter display, replace
the battery immediately.
Note-Important safety information, refer to the
instruction manual.
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
Complies with European (EU) safety standards
Earth (ground) TERMINAL
Caution, possibility of electric shock
Equipment protected throughout by double
insulation or reinforced insulation.
Application around and removal from UNINSULATED
HAZARDOUS LIVE conductors is permitted.
Direct current
Alternating current
Both direct and alternating current
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 the meter is not used.
Switch the measuring range to OFF position.
1.4.6 If the meter is not used for long time, remove the
battery to prevent the meter being damaged.
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 with 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, AC voltage,
DC voltage, frequency, duty ratio, resistance,
capacitance measurement, temperature, NCV and circuit
connection, and to make diode tests.
- The meter has an auto measuring range function.
- The meter has a test data dual display function.
- The meter has a reading hold function.
- The meter has a relative test function.
- The meter has max. and min. display function.
- The meter has a manual measuring range selection
function.
- The meter has a back light function.
- The meter has a auto power-off function.
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.

16
(16) Protective Barrier (to warn the operator of the limit of
safe access)

3.1.12 Power supply: DC 9V battery
(battery type: NEDA 1604, 006P or 6F22)
238x92x50mm
390

3 3
3 3
10

3.2.10 Duty cycle
0.1~99.9% 0.1% ±(3.0%)