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Table of Contents
- 1 Table of Contents
- 2 Safety Information
- 3 Description
- 4 Specifications
- 5 Operating Instruction
- 6 Voltage Measurement
- 7 Current Measurement
- 8 Resistance Measurement
- 9 Diode Test
- 10 Continuity Test
- 11 Temperature Measurement
- 12 Battery Test
- 13 Transistor Measurement
- 14 Maintenance
- Download this manual
Mastech MS8221
User's Manual
CONTENTS
1. SAFETY INFORMATION..................................1
2. DESCRIPTION...............................................4
3. SPECIFICATIONS...........................................6
4. OPERATING INSTRUCTION.............................9
4.1 Voltage measurement.................................10
4.2 Current measurement.................................10
4.3 Resistance measurement.............................12
4.4 Diode test.................................................12
4.5 Continuity test...........................................13
4.6 Temperature measurement...........................13
4.7 Battery test...............................................14
4.8 Transistor measurement..............................14
5. MAINTENANCE.............................................15
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Summary of Contents for Mastech MS8221
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Page 1: Table Of Contents
Mastech MS8221 User's Manual CONTENTS 1. SAFETY INFORMATION…………………………….1 2. DESCRIPTION………………………………………..4 3. SPECIFICATIONS…………………………………….6 4. OPERATING INSTRUCTION………………………..9 4.1 Voltage measurement…………………….……..10 4.2 Current measurement……………………………10 4.3 Resistance measurement……………………..12 4.4 Diode test………………………………………….12 4.5 Continuity test…………………………………….13 4.6 Temperature measurement……………………...13 4.7 Battery test………………………………………..14 4.8 Transistor measurement…………………………14 5. MAINTENANCE………………………….…………..15... -
Page 2: Safety Information
1. 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 II 1000V, CAT III 600V and pollution 2. - Page 3 verify that the insulation on test leads is not damaged and/or the leads wire is not exposed. - 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.
- Page 4 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.
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Page 5: Description
battery. - For continue protection against fire, replace fuse only with the specified voltage and current ratings: F 200mA/250V (quick acting). - Do not use abrasives or solvents on the meter, use a damp cloth and mild detergent only. - Always set the power switch to the OFF position when the meter is not in use. - Page 6 4. hFE socket (except MS8221D) 5. Terminals - 5 -...
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Page 7: Specifications
3. SPECIFICATIONS 3.1 GENERAL SPECIFICATIONS - Environment conditions: 600V CAT.III and 1000V CAT.Ⅱ Pollution degree: 2. Altitude < 2000 m. - Operating temperature: 0~40 C (32℉ to 104℉), (<80% RH, non-condensing) - Storage temperature: -10~50 C(14℉ to 122℉), (<70% RH, battery removed) - Temperature Coefficient: 0.1×(specified accuracy) / C (<18... - Page 8 (Accuracy is specified for a period one year after calibration) 3.2.1 DC VOLTAGE Accuracy Range Resolution MS8221A/8221D MS8221B/8230B ±0.5%±2 0.2V 0.1mV ±0.5%±3 ±0.5%±1 0.01V ±0.8%±3 200V 0.1V ±0.8%±2 ±0.8%±5 1000V - Input impedance: MS8221A/MS8221D: 10MΩ MS8221B/MS8230B: 1MΩ - Max. input voltage: 200mV range: 250VDC or AC rms 2V - 1000V ranges: 1000VDC or 750V rms 3.2.2 AC VOLTAGE Accuracy...
- Page 9 3.2.3 DC CURRENT Accuracy Range Resolution MS8221A/8221D MS8221B/8230B 200uA 0.1uA ±1.0%±2 ±0.8%±1 1 uA 20mA 10 uA ±1.5%±2 ±1.2%±1 200mA 100uA ±2.0%±5 ±3.0%±2 10mA Overload protection: F250mA/250V fuse (10A range unfused). Max. Input Current: mA Jack: 200mA, 10A Jack: 10A 3.2.4 AC Current (MS8221A/MS8221D) Range Resolution...
- Page 10 or 2µA (MS8221B/MS8230B). : approx. 2.8V 3.2.6 Resistance Accuracy Range Resolution - 8 - MS8221A/8221D MS8221B/8230B ±0.8%±3 ±1.0%±3 200Ω 0.1Ω 2KΩ 1Ω 20KΩ 10Ω ±0.8%±1 ±1.0%±2 200KΩ 100Ω 2MΩ 1kΩ ±1.0%±2 20MΩ 10kΩ Overload protection: 250V DC or 250V AC rms. 3.2.7 Diode test Display: read approximate forward voltage of diode Forward DC Current: approx.
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Page 11: Operating Instruction
±2.0%±3 400℃ to 1000℃ - Overload Protection: 250V DC or rms AC 3.2.10 Battery Test (Only MS8221D) Range Accuracy Discharge current - 9 - 1.5V 100mA ±0.8%±1 Overload protection: 1.5V: F250mA/250V fuse 9V: 250Vdc or 250Vac rms 4. OPERATING INSTRUCTION 4.1 Voltage measurement - Set rotary switch to the desired V or V~ range. -
Page 12: Current Measurement
4.2 Current measurement - Set the rotary switch to the desired A or A~ range. - Connect the black test lead to the COM terminal and the red test leads to the mA terminal for a maximum of - 10 - 200mA. -
Page 13: Resistance Measurement
maximum current is 10A, no fuse protection. 4.3 Resistance measurement - Connect the black test lead to the COM jack and the - 11 - red test lead to the Ω jack. - Set the transform switch at the Ω range position. - Connect test leads across the resistance under measurement. -
Page 14: Continuity Test
diode. If the lead connection is reversed, only figure "1" displayed. To avoid electrical shock and/or damage to the instrument, disconnect circuit power and discharge all high-voltage capacitors before testing diodes. 4.5 Continuity test - Set the rotary switch to range. -
Page 15: Battery Test
to the area or surface of the object for measurement. - You can get reading from LCD. To avoid electrical shock, do not connect the thermocouples with the electriferous circuit. 4.7 Battery test (only MS8221D) - Set the rotary switch to desired BATT range. - Connect the black and red test leads to the COM and VΩ... -
Page 16: Maintenance
5. MAINTENANCE 5.1 General Maintenance - 14 - Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents. Dirt or moisture in the terminals can affect readings. To clean the terminals: ¥ Turn the meter off and remove all test leads. ¥... - Page 17 Before replacing the fuse, disconnect test leads from any circuit under test. To prevent damage or injury, replace the fuse only with specified ratings. 5.3 Battery replacement To replace the battery (see the Figure): - When the battery voltage drop below proper operation range the symbol will appear on the LCD display and the battery need to be replaced.
- Page 18 CAUTION Using this appliance in an environment with a strong radiated radio-frequency electromagnetic field (approx. 3V/m), may influence its measuring accuracy. The measuring result can be strongly deviating from the actual value. - 17 -...
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