Mastech ms6231 Operator's Manual
MS6231
DIGITAL
ENGINE ANALYZER
OPERATOR ’ S MANUAL
SAFETY INFORMATION
WARNING
To
ensure safe operation, and in order to exploit to the full the functionality of the meter, please follow
the directions in this section carefully.
This multimeter has been designed according to IEC-1010 concerning electronic measuring instruments
with an overvoltage category CAT ( ( ( 600V and pollution 2.
Follow all safety and operating instructions to ensure that the meter is used safely and is kept in good
operating condition.
With proper use and care, the digital meter will give you years of satisfactory service.
1.1 PRELIMINARY
1.1.1 When using the meter, the user must observe all normal safety rules concerning:
( Protection against the dangers of electrical current.
( Protection of the meter against misuse.
1.1.2 When the meter is delivered, check that it has not been damaged in transit.
1.1.3 When poor condition under harsh preservation or shipping conditions caused, inspect and confirm
this meter without delay.
1.1.4
Test
leads must be in good condition. Before using verify that the insulation on test leads is not
damaged and/or the leads wire is not exposed.
1.1.5 Full compliance with safety standards can be guaranteed only if used with test leads supplied. If
necessary, they must be replaced with the same model or
same electric ratings.
1.2 DURING USE
1.2.1 Before using, you must select the right input jack, function and range.
1.2.2 Never exceed the protection limit values indicated in specifications for each range of measurement.
1.2.3 When the meter is linked to a measurement circuit, do not touch unused terminals.
1.2.4 At the manual range, when the value scale to be measured is unknown beforehand, set the range
selector at the highest position.
1.2.5 Do not measure voltage if the voltage on the terminals exceeds 600V above earth ground.
1.2.6 Always be careful when working with voltages above 60V DC or 30V AC rms, keep fingers behind
the probe barriers while measuring.
1.2.7 Never connect the meter leads across a voltage source while the transform switch is in the current,
resistance, temperature, diode or continuity mode. Doing so can damage the meter.
1.2.8 Before rotating the transform switch to change functions and ranges, disconnect test leads from the
circuit under test.
1.2.9 Never perform resistance, temperature, diode and continuity measurements on live circuits.
1.2.10 Never use the meter under the condition of the explosive air, steam or dirt.
1.2.11 If any faults or abnormalities are observed, the meter can not be used any more and it has to be
checked out.
1.2.12 Never use the meter unless the rear case is in place and fastened fully.
1.2.13 Please do not store or use meter in areas exposed to direct sunlight, high temperature, humidity or
condensation.
1.3 SYMBOLS
Important safety information, refer to the operating manual.
Double insulation （ Protection class ( ( ） .
CAT III Overvoltage (Installation) category III, Pollution Degree 2 per IEC1010-1 refers to the level of
Impulse Withstand Voltage protection provided.
Conforms to european union directive
Earth ground
AC Alternating current
DC Direct current
Diode
Continuity buzzer
AC or DC (alternating current or direct current)
Engine dwell
RPM Round per minute
× 10 Reading multiplies 10
Measurement with clamp (optional), widening the field of applications of the meter
℃ Centigrade
℉ Fahrenheit
MAX-H The maximum value is being held.
DAT A-H This indicates that the display data is being held.
AUTO Auto range
The battery is not sufficient for proper operation.
1.4 MAINTENANCE
1.4.1 Please do not attempt to adjust or repair the meter by removing the rear
case while voltage is being applied.Atechnician who fully understands danger involved should only carry
out such actions.
1.4.2 Before opening the battery cover or case of the meter, always disconnect test leads from all tested
circuits.
1.4.3
To
avoid the wrong reading causing electricity attack, when the meter displays “ ” , you must
change the battery.
1.4.4 Do not use abrasives or solvents on the meter, use a damp cloth and mild detergent only.
1.4.5 Always set the power switch to the OFF position when the meter is not in use.
1.4.6 If the meter is to be stored for a long period of time, the batteries should be removed to prevent
damage to the unit.
2. DESCRIPTION
- This meter is a portable professional measuring instrument with handsome LCD and back light easily
reading.
- Single operation of a transform switch makes measurement convenient. Overload protection and low
battery indication are provided, this meter is ideal for use in the fields, workshop, school, hobby and
home applications.
- This meter has function of auto range and manual range.
- This meter has function of auto warning.
- This meter has function of auto power off.
- This meter is with the functions of data hold and maximum value hold.
- When using, it can show ranges engineering unit enunciators measuring results.
2.1 NAMES OF COMPONENTS
⑴ LCD Display
⑵ ON/OFF Button
⑶ RANGE Button
⑷ FUNC. Button
⑸ Transform Switch
⑹ 10A Jack
⑺ INPUT Jack
⑻ COM Jack
⑼ Panel
⑽ Button
⑾ DAT A-H Button
⑿ MAX.H Button
2.2 SWITCH, BUTTONS AND INPUT JACK ELUCIDATION
( ON/OFF Button
This Button is used to the switch of power.
(1)
(2)
(3)
(4)
(5)
(6)
(10)
(11)
(9)
(7)
(8)
(12)
( RANGE Button
This button is used to transform Auto range or manual range.
( FUNC. Button
This button is used to transform function.
( DAT A-H Button
This Button is used to the switch of data hold.
( MAX.H Button
This Button is used to the switch of maximum value hold.
( Button
This button is used to the switch of back light.
( Transform Switch
This switch is used to select functions and desired ranges.
( 10A Jack
Input terminal for current 0 ~ 10A.
INPUT Jack Input terminals except A.
COM Jack
Common terminal for measurement.
3. SPECIFICATIONS
Accuracy is specified for a period of year after calibration and at 18 ℃ to 28 ℃ （ 64 ( F to 82 ( F ） with relative
humidity to 75%.
3.1 GENERAL SPECIFICATIONS
3.1.1 Auto ranges and manual range.
3.1.2 Overrange protection for all ranges.
3.1.3 Max. Voltage Between T erminals And Earth Ground: 600V DC or AC
3.1.4 Operating Altitude: 2000 meters (7000 ft.) maximum
3.1.5 Display: 16mm LCD
3.1.6 Max. Show V alue: 1999 (3 1/2)
3.1.7 Polarity Indication: ‘ - ’ indicates negative polarity.
3.1.8 Overrange Indication: Display ‘ OL
’
3.1.9 Sampling Time: approx. 0.4 second
3.1.10 Unit showing: showing of function and electrical capacity.
3.1.11 Low Battery Indication: ‘
’
displayed
3.1.12 Auto power off time: 15 min.
3.1.13 Power Supply: 1.5V × 3 AAA battery.
3.1.14 Operating Temperature: 0 ℃ to 40 ℃ （ 32 ( F to 104 ( F ）
3.1.15 Storage T emperature: -10 ℃ to 50 ℃ （ 10 ( F to 122 ( F ）
3.1.16 Dimension: 158 × 74 × 32 mm
3.1.17 Weight: approx. 250g （ including battery ）
3.2 ELECTRICAL SPECIFICATIONS
Circumstance Temperature: 23 ( 5 ℃ Relative Humidity: < 75%
3.2.1 DC Voltage
Range Resolution Accuracy
200mV 0.1mV
2V 0.001V
20V 0.01V
( （ 0.7% of rdg + 2 digits ）
200V 0.1V
600V 1V
- Input Impedance: 10M (
- Overload Protection:
200mV range: 250V DC or AC rms, 2V-600V ranges: 600V DC or AC rms.
- Max. Input Voltage: 600V DC
3.2.2 AC V oltage
Range Resolution Accuracy
200m
V
0.1mV
2V 0.001V
( （ 0.8% of rdg + 3 digits ）
20V 0.01V
200V 0.1V
600V 1V ( （ 1.0% of rdg + 3 digits ）
- Input Impedance: 10M (
- Overload Protection:
200mV range: 250V DC or AC rms, 2V-600V ranges: 600V DC or AC rms.
- Frequency Range: 40 to 400Hz
- Response: Average, calibrated in rms of sine wave.
- Max. Input Voltage: 600V rms AC
3.2.3 DC Current
Range Resolution Accuracy
2.000
A
0.001A
( （ 2.0% of rdg + 10
digits ）
10.00
A
0.01A
- Overload Protection: unfused.
- Max. Input Current:: 10A
- voltage drop ： 2A range: 20mV ,
10A range: 200mV
3.2.4 AC Current
Range Resolutio
n
Accuracy
2.000
A
0.001A ( （ 3.0% of rdg + 10 digits ）
10.00
A
0.01A
- Overload Protection: unfused.
- Max. Input Current:: 10A
- Frequency Range: 40 to 400Hz
- Response: Average, calibrated in rms of sine wave.
- voltage drop ： 2A range: 20mV ,
10A range: 200mV
3.2.5 DC Current （ with clamp, optional ）
Range Resolut
ion
Accuracy
mete
r 200A
0.1mV
/0.1A
( （ 1.2 % of rdg + 3
digits ）
(DC)
Cla
0
to 200A
0.1A
/0.1mV
Typical ( （ 2.0 % ）
mp
mete
r 2000A
1mV/1
A
( （ 1.2 % of rdg + 3
digits ）
(DC)
Cla
mp
0
to
2000A
1A
/1mV
Typical ( （ 2.0 % ）
- Overload Protection: 250V DC or 250V rms AC.
- Max. Input Voltage: 200mV
3.2.6 AC Current （ with clamp, optional ）
Range Resolut
ion
Accuracy
mete
r 200A
0.1mV
/0.1A
( （ 1.5 % of rdg + 5
digits ）
(DC)
Cla
mp
0
to 200A
0.1A
/0.1mV
Typical ( （ 3.0 % ）
mete
r 2000A
1mV/1
A
( （ 1.5 % of rdg + 5
digits ）
(DC)
Cla
mp
0
to
2000A
1A
/1mV
Typical ( （ 3.0 % ）
- Overload Protection: 250V DC or 250V rms AC.
- Max. Input Voltage: 200mV
- Frequency Range: 40 to 400Hz
- Response: Average, calibrated in rms of sine wave.
3.2.7 Resistance
Range Resolutio
n
Accuracy
200 ( 0.1 ( ( （ 1.0% of rdg + 3 digits ）
2k ( 0.001k ( ( （ 1.0% of rdg + 1 digit ）
20k ( 0.01k ( ( （ 1.0% of rdg + 1 digit ）
200k ( 0.1k (
( （ 1.0% of rdg + 1 digit ）
2M ( 0.001M (
( （ 1.0% of rdg + 1 digit ）
20M ( 0.01M ( ( （ 1.0% of rdg + 5 digits ）
- Open Circuit Voltage: 0.25V
- Overload Protection: 250V DC or 250V rms AC
3.2.8 Continuity
Range Function
Built-in buzzer will sound, if
resistance is lower than 50 ( .
- Open circuit voltage: approx. 0.5V
- Overload Protection: 250V DC or 250V rms AC
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