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MS8 21A

3

Digital Multimeter

CAT III

600V

1
2
3
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Summary of Contents for MS8321A

Page 1: ...MS8 21A 3 Digital Multimeter CAT III 600V ...

Page 2: ...Guidelines 1 2 6 Automatic Power Off 5 3 2 Technical Specifications 6 3 2 4 AC Current 8 3 2 5 Resistance 9 3 2 6 Continuity Diode Test 9 3 2 1 DC Voltage 7 3 2 2 AC Voltage 7 3 2 3 DC Current 8 3 2 7 hFE Transistor Gain 9 4 Operating Instructions 10 4 1 DC AC Voltage 10 4 2 Resistance 10 4 3 DC AC Current 11 4 4 Diodes 11 4 5 hFE Transistor Gain 12 4 6 Continuity 12 5 Maintenance 13 5 1 Cleaning ...

Page 3: ...acks in the casing and the insulation around the input sockets Only use the test leads provided with the meter If leads are damaged or need to be replaced use similar leads with matching specifications Ensure the meter works properly by testing a known voltage source firstly If not working properly the protective equipment may be damaged have the meter serviced before using Do not place meter in a...

Page 4: ...ned securely If any abnormality is observed stop using the meter and send it in for repair If the meter is not going to be used for an extended period of time remove the batteries and avoid storing in a hot humid environment 1 Display 2 Hold Button 3 Rotary Switch 4 Input Jacks 1 2 3 4 Conforms to UL STD 61010 1 Certified to CSA STD C22 2 NO 61010 1 This product has been tested to the requirements...

Page 5: ...W x36 H mm Weight approx 220g including battery 05 06 2 2 Display 3 digit 15mm LCD display 2 3 Hold Button Press to keep the current reading on the display Press the button again to return to normal display 2 4 Rotary Switch The rotary switch is used to switch between functions ranges Functions are voltage current resistance diode continuity and transistor gain 2 5 Input Jacks measurement input re...

Page 6: ... Input Voltage 600V DC or AC rms Frequency Response 40Hz 400Hz rms sine wave avg responding 3 2 3 DC Current Resolution Accuracy 200µA 2mA 0 1mA 1µA 0 1µA 10µA 10mV 20mA 200mA 10A 2 0 of reading 5 digits Measuring range 1 0 of reading 3 digits 1 5 of reading 1 digits Overload Protection F1 250mA 250V F2 10A 600V Max Input Current mA 200mA DC or AC rms 10A continuous do not exceed 15 sec 3 2 4 AC C...

Page 7: ... Do not exceed the protection limits to prevent electric shock and or damage to the meter Turn the rotary switch to the proper voltage range Connect the red test lead to the V input jack and the black test lead to the COM jack Connect the leads to the voltage source or circuit under test Read the measured voltage on the display When measuring DC voltage the display will show the polarity of the re...

Page 8: ...pen or leads not connected the display will show 1 4 3 DC AC Current Warning To avoid personal injury damage to the meter or device under test always be sure to have the rotary in the correct position and leads in the correct jack before making current measurements Turn the rotary switch to the proper current range Connect the black test lead to the COM jack If the current to be measured is less t...

Page 9: ...ace it until the probes are unplugged and the power is shut down Take out the two screws of the rear cover to remove the housing 2 The specification of the fuse is F1 250mA 250V F2 10A 600V The replacement should be of the same specification 3 The battery for this multimeter is 9V NEDA 1604 or 6F22 The replacement should be of the same specification 4 Don t put the instrument into use until the re...

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