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MS8240B

Digital Multimeter

FUNC

HOLD

MAX

FUSED

FUSED

Digital Multimeter

Operating Instruction

MS8240B

Summary of Contents for MS8240B

Page 1: ...MS8240B Digital Multimeter FUNC HOLD MAX FUSED FUSED Digital Multimeter Operating Instruction MS8240B ...

Page 2: ...formed with thermo plastic elastomer giving the main body though downsized high resistance against the shock of a drop This operating instruction covers information on safety and caution Please read relevant information carefully and observe all the warnings and note strictly The DMM as general measurement tool and widely used in the school laboratory factory etcsocial field 2 Safety Note To avoid...

Page 3: ...nect circuit power and discharge all high voltage capacitors before testing continuity diode resistance capacitance or current Note international Electrical Symbol AC or DC Warning see explain in manual 1 LCD Display 2 MAX push button 3 HOLD push button 4 Rotary Switch Knob 5 V Ω Hz Input terminal 6 COM terminal 7 μA mA C Cx Lx hFE Input terminal 8 10A input terminal 9 Power switch ON OFF 10 FUNC ...

Page 4: ...alue This key is used to control Backlight This key is act with trigger When press the key will enable Backlight for 15 sec Press the key again within 15 sec Backlight will disable ON OFF Lock type Power Switch FUNC HOLD MAX MIN Push button Function Back light 3 3 Display Indicators FIG 2 LCD Number Indicator Meaning 1 2 3 4 5 6 7 8 10 11 12 13 14 MAX HOLD MkΩ C F The unit of temperature C Centigr...

Page 5: ...mension L W H Weight 205 mm 102 mm 58mm Approx 390g 4 2 Electrical Specification at 23 5 75 RH C 4 2 1 DC voltage Range Resolution Accuracy 200mV 0 1mV 2V 20V 200V 1000V 1mV 10mV 100mV 1V 0 5 rdg 2dgt Input impedance 10MΩ Over load protection 250V DC AC rms at 200mV Range Max input voltage 1000VDC 4 2 2 AC voltage Range Resolution Accuracy 200mV 0 1mV 2V 20V 200V 1000V 1mV 10mV 100mV 1V 0 8 rdg 3d...

Page 6: ...A jack and 10A at 10A jack 4 2 7 AC Current Range Resolution Accuracy 2mA 20mA 200 0mA 10 00A 1µA 0 01mA 0 1mA 0 01A 1 5 rdg 5dgt 3 0 rdg 10dgt Over protection use the fuse F250mA 1KV at mA range and use the fuse F10A 1KV at 10A range Max input current 200mA at mA jack and 10A at 10A jack Frequency response 40 400Hz 4 2 8 Temperature You can selecting Centi degree C or Fahrenheit F by FUNC key Ran...

Page 7: ...00V AC 700Vrms although readings may be obtained 5 1 DC AC Voltage Measurement 5 Measurement Operation The DC voltage ranges are 200 0mV 2 000V 20 00V 200 0V and 1000V and then The AC voltage ranges are 200 0mV 2 000V 20 00V 200 0V and 750 0V To measure DC AC voltage 1 Insert the red test lead into the VΩ input terminal and the black test lead into the COM terminal 2 First time Default mode is DC ...

Page 8: ... of the meter To avoid damage to the Meter or to the equipment under test disconnect power and discharge all high voltage capacitors before Diode Continuity check 5 3 Diode Continuity check To avoid damage to the Meter or to the equipment under test disconnect power and discharge all high voltage capacitors before Diode Continuity check 1 insert the red test lead into the VΩ terminal and the black...

Page 9: ...en measuring bulk capacitors with this meter readings will be stablizee after a few seconds When measuring the small capacitor with less than 20nF the distributed capacitance displayed base number of the meter and wire should be subtracted 5 6 Transistor Measurement Warning Do not apply any RMS voltage higher than 250V DC or AC between common end and hFE end This prevents electrical shock and or m...

Page 10: ...ted 2 Rotate switch to the appropriate position 3 Connect the black test probe to the COM input socket If the current to be tested is lower than 200mA connect the red test probe to the mA input socket If the measured current is between the range of 200mA 10A the red test probe should be connected to 10A input socket 4 Turn off the circuit to be tested Connect the black test probe to the low voltag...

Page 11: ... be tested The LCD will display the temperature at the location of the current sensor 5 Press the FUNC key to convert the measured value to F or set the temperature unit to F first before measuring When the symbol shows on the display during use of the meter you must replace the batteries to avoid affecting the normal use of the meter Method of replacing batteries 1 Disconnect the test wire Switch...

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