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11

12

Connect the black and red test probe to cathode 
and anode of the diode to be tested, respectively. 
The meter will display the diode's forward bias 
voltage value. If the test probe polarity is reversed,
the meter will display “1”, which distinguishes the 
diode's cathode and anode.

3

When measuring diodes, to avoid injury or meter
damage, turn off the power to the circuit and 
discharge all capacitors. 

Warning

Battery test 

Place the function measuring range switch to the 
battery testing position. 
Insert the 

red probe to VΩmA input jack

. Insert the 

black probe to COM input jack. 
Connect free end of the red probe to positive and 
the free end of the black probe to negative end of 
the battery to be tested. 
Read the result from the LCD display. 

Don't input voltage higher than 60V DC or 30V AC, 
to prevent electric shock or meter damage. 
General specifications

Warning

• 

Operating environment and condition:  600V

  CAT. III, pollution grade: II.

 

  

Elevation < 2000 m

1

2

3

4

• 

Environmental temperature and humidity: 0~40°C, 

  <80% RH (do not use meter when temperature <10°C). 

• 

Storage temperature and humidity: -10~60°C and 

  <70% RH (remove the battery).

• 

Temperature coefficient: 0.1 Accuracy /°C(<18°C 

  or >28°C). 

• 

The maximum allowable voltage between 

  measurement end and ground: 600V DC or 600V
  AC RMS. 

• 

Fuse protection:  grade mA: fuse F200mA/500V 

  grade 10A: fuse F10A/500V

• 

Sampling rate: about 3 times/s. 

• 

Display: 3.5” digital LCD display. 

• 

Over-range indication: LCD will show “1”. 

• 

Low battery indication: When the battery voltage is

 

 lower than the normal operating voltage,

 

      

”will 

  

display on the LCD display. 

 

Input polarity indication: automatically display “-”. 

 

Power supply: AAA 1.5V batteries. 

 Accuracy Indicators

Accuracy: ±(% of r digits) with one year of 
warranty. Reference conditions: environmental 
temperature is from 18°C~28°C, relative humidity is 
not more than 80%.

Содержание MS8239A

Страница 1: ...ual Digital Multimeter HOLD 10A COM MAX 10A 500V MAX 200mA 250V 600V MAX 600V CAT III IEC61010 1 BATT A V V 200 600 20m 200m 10A 200 2k 20k 200k 2M 2 20 200 600 200m 9V 1 5V 12V MS8239A Auto Power Off DIGITAL MULTIMETER ...

Страница 2: ...C AC Voltage Measurement 7 7 DC Current Measurement Resistance Measurement 8 9 Continuity Measurement 10 Diode Test 10 Battery Test 11 General Specifications 11 Accuracy Indicators 12 DC Voltage 13 AC Voltage 13 Resistance Measurement 14 Diode 14 Continuity Measurement 14 DC Current 15 Battery Test 15 Maintenance 15 General Maintenance 16 Replace Battery 16 Replace Fuse 17 ...

Страница 3: ...ranty for the meter may become invalid The warnings in the user manual are used to remind users of possible dangers or dangerous actions The notes in the user manual are to remind users of conditions or actions that may cause damage to the measured object Check the case before using the meter Don t use the meter with damaged case Check to see if the case is cracked or lacks plastic parts Please pa...

Страница 4: ...t DC voltage measuring range equal to or greater than the AC measuring range Before measuring current please check the meter fuse shut off power to the circuit to be tested then connect the meter and energize the circuit When opening the case or part of the case turn the meter off When the battery low voltage indicator becomes lit replace the battery at once A low battery will cause meter reading ...

Страница 5: ... current diode continuity and battery test connected with the red test probe Meter Instructions Meter Appearance Display 1 Battery low voltage indicator 2 Data hold indicator 3 Numerical value display 4 Numerical value polarity indicator negative sign HOLD 10A COM MAX 10A 500V MAX 200mA 250V 600V MAX 600V CAT III IEC61010 1 BATT A V V 200 600 20m 200m 10A 200 2k 20k 200k 2M 2 20 200 600 200m 9V 1 ...

Страница 6: ...RMS voltage higher than 600V DC or AC to prevent injury or damage to meter and equipment Warning Turn off the power to the circuit to be tested Discharge all the high voltage capacitors on the circuit to be tested Rotate the function selection switch to the appropriate DC current position Depending on the size of the current to be measured connect the red test probe to 10A or mA input jack connect...

Страница 7: ...nd read the resistance value of the short circuit This resistance value should be subtracted after measuring the resistance to be tested When there is no input for example open circuit the display will show 1 which means that the measured value is out of range When measuring resistance or circuit continuity to avoid injury or meter damage turn off the power to the circuit and discharge all capacit...

Страница 8: ...lectric shock or meter damage General specifications Warning Operating environment and condition 600V CAT III pollution grade II Elevation 2000 m 1 2 3 4 Environmental temperature and humidity 0 40 C 80 RH do not use meter when temperature 10 C Storage temperature and humidity 10 60 C and 70 RH remove the battery Temperature coefficient 0 1 Accuracy C 18 C or 28 C The maximum allowable voltage bet...

Страница 9: ...sine wave RMS average response Measuring range 1 2 of reading 10 digits Resolution Accuracy 200Ω 2kΩ 0 1kΩ 0 001kΩ 0 1Ω 0 01kΩ 0 001MΩ 20kΩ 200kΩ 2MΩ Measuring range 0 8 of reading 5 digits Overload protection 250V DC or AC RMS 2V Forward DC current about 1mA Reverse DC voltage about 2 5V Display approximation of diode forward voltage drop Diode Measuring range Function Test Environment Resolution...

Страница 10: ...testing and maintenance data To avoid injury or damage to the meter don t wet the inner parts of the meter Before opening the case or battery cover remove the connecting cable between the test probe and the input signal Warning General Maintenance Regularly clean the meter case with damp cloth and a small amount of detergent Do not use abrasives or chemical solvents If the input jack becomes dirty...

Страница 11: ...tions Replace the battery cover and tighten the screws 1 2 3 4 5 6 7 To avoid electric shock or personal injury before opening back cover to replace fuse turn off the meter and disconnect the test probe from the measurement circuit Warning To replace fuse Turn off the power to the meter Remove all test probes from the input jacks Loosen screws on the back cover with screwdriver Remove the back cov...

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