Mastech MS8230B Instruction Manual

MS 8230B
Safety Information
DIGITAL MULTIMETER
INSTRUCTION MANUAL
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
DIGITAL MULTIMETER
concerning electronic measuring instruments with an over voltage
category CAT II 1000V, CAT III 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.
• Preliminary
- When using the meter, the user must observe all normal safety
MS 8230B
rules concerning:
Protection against the dangers of electrical current.
OFF V
1000 750
Protection of the meter against misuse.
200 200
A
V - When the meter is delivered, check that it has not been
20 200µ
damaged in transit.
2 2m - When poor condition under harsh preservation or shipping
conditions caused, inspect and confirm this meter without delay.
200m 20m
- Test leads must be in good condition. Before using verify that
2M 200m the insulation on test leads is not damaged and/or the leads
wire is not exposed.
200k
10A
- Full compliance with safety standards can be guaranteed only
Ω 20k h
FE
if used with test leads supplied. If necessary, they must be
2k E C B E
200
replaced with the same model or same electric ratings.
NPN
600V CAT III
PNP
1000V CAT II
• During Use
VΩmA
10ADC COM
- Before using, you must select the right input jack, function and
range.
FUSED - Never exceed the protection limit values indicated in
MAX 10A MAX 200mA
UNFUSED 1000V 750V
specifications for each range of measurement.
- When the value scale to be measured is unknown beforehand,
set the range selector at the highest position.
- Do not measure voltage if the voltage on the terminals exceeds
1000V above earth ground.
- Always be careful when working with voltages above 60V DC or
Warning
30V AC rms, keep fingers behind the probe barriers while
measuring.
- Before rotating the transform switch to change functions and
ranges, disconnect test leads from the circuit under test.
- Never perform resistance, transistor and diode measurements
on live circuits.
- Never use the meter under the condition of the explosive air,
steam or dirt.
- If any faults or abnormalities are observed, the meter can not be
used any more and it has to be checked out.
- Never use the meter unless the rear case is in place and fastened
fully.
- Please do not store or use meter in areas exposed to direct
sunlight, high temperature, humidity or condensation.
• Symbols
Important safety information, refer to the operating
manual.
Double insulation (Protection class II).
Overvoltage (Installation) category II, Pollution Degree 2
CAT II
per IEC1010-1 refers to the level of Impulse Withstand
Voltage protection provided.
CAT III Overvoltage (Installation) category III, Pollution Degree 2
per IEC1010-1 refers to the level of Impulse Withstand
Voltage protection provided.
High voltage warning symbol
Conforms to european union directive
Earth ground
Fuse
Alternating current
01
02
Direct current
FRONT PANEL
Diode
This indicates that the display data is being held.
• Names of
The battery is not sufficient for proper operation.
Components
• Maintenance
1 LCD Display
-Please do not attempt to adjust or repair the meter by removing
the rear case while voltage is being applied. A technician who 2 Panel
fully understands danger involved should only carry out such
3 H Button:
actions.
This Button is
- Before opening the battery cover or case of the meter, always
disconnect test leads from all tested circuits.
used to the switch
- To avoid the wrong reading causing electricity attack, when the
of data hold.
meter displays " ", you must change the battery.
- For continue protection against fire, replace fuse only with the 4 Transform Switch:
specified voltage and current ratings: F 200mA/250V (quick acting).
This switch is used
- Do not use abrasives or solvents on the meter, use a damp cloth
to select functions
and mild detergent only.
- Always set the power switch to the OFF position when the meter
and desired ranges.
is not in use.
5 10A Jack:
- If the meter is to be stored for a long period of time, the batteries
should be removed to prevent damage to the unit.
Input terminal
• Description
for current 0 ~ 10A.
- This meter is a portable professional measuring instrument with
6 COM Jack:
handsome LCD easily reading.
Common terminal
- Single operation of a transform switch makes measurement
convenient. Overload protection and low battery indication are
for measurement.
provided, this meter is ideal for use in the fields, workshop,
hFE Jack:
7
school, hobby and home applications.
This Jack is used to
- This meter is with the functions of data hold.
transistor test.
8 V/Ω/mA Jack:
Input Jack
03
• Specifications
Accuracy is specified for a period of year after calibration and at
18°C to 28°C (64°F to 82°F) with relative humidity to 75%.
1
• General Specifications
- Max. Voltage Between Terminals And Earth Ground: 1000V DC
DIGITAL MULTIMETER
or 750V AC
- Fuse Protection: F 200mA/250V (quick acting).
2
- Display: 15mm LCD
- Max. Show Value: 1999 (3 1/2)
- Polarity Indication: '-'indicates negative polarity.
3
- Overrange Indication: Display '1'
- Sampling Time: approx. 0.4 second
4
- Low Battery Indication: " "displayed
MS 8230B - Power Supply: 1.5V×3 AAA battery.
- Operating Temperature: 0°C to 40°C (32°F to 104°F)
OFF - Storage Temperature: -10°C to 50°C (10°F to 122°F)
V
750 5
1000
- Dimension & Weight: 158×74×32 mm, 250g (including battery)
200
200
V A
20 200µ • Electrical Specifications
6
2m
2 Circumstance Temperature: 23±5°C, Relative Humidity: < 75%
DC Voltage
200m 20m 7
Range
Resolution
2M 200m
200mV 0.1mV ±(0.5% of rdg + 2 digits)
200k 10A
2V 0.001V ±(0.5% of rdg + 3 digits)
20k
Ω h FE 20V 0.01V
2k E C B E ±(0.8% of rdg + 3 digits)
200
200V 0.1V
NPN
600V CAT III PNP
1000V 1V ±(0.8% of rdg + 5 digits)
1000V CAT II
8
10ADC COM VΩmA
- Input Impedance: 1MΩ
- Overload Protection: 200mV range: 250V DC or AC rms,
FUSED 2V-1000V ranges: 1000V DC or 750VAC rms.
MAX 200mA
MAX 10A
UNFUSED 1000V 750V - Max. Input Voltage: 1000V DC
04 05
Accuracy