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General Information 

The meter is a multi-function instrument with high measurement accuracy, 
fast response, and high safety level. Embedded with a special IC up to 
2000 counts, this IC is composed of high-precision A/D converter with 
high-speed digital processor. It is with accurate measurement, high 
resolution, fast operation, complete software calibration, no change in 
long-term use in accuracy, which is suitable for professional engineers, 
maintenance engineers, teaching, etc. 
Please read carefully this operation manual and pay attention to safety 
guidelines before operating this meter. 

1.1 Safety Information 

1.1.1 Safety Instructions 

  Before operating this meter, the operator must observe all standard 

safety procedures in the two respects below:   

A. Safety procedures against electric shock 
B. Safety procedures against unintended use 

  To ensure your personal safety, please use the test lead that 

accompanies the meter. Before operating this meter, ensure that the 
test lead is flawless.   

1.1.2 Safety Considerations 

  When the meter is used in the vicinity of the equipment that produces 

strong electromagnetic interferences, the reading on the meter will 
grow unstable and even produce serious errors.   

  Don't operate the meter or pen-shaped meter whose appearance is 

damaged.   

  The safety function of the meter will become null if the meter is not 

properly operated.   

  The meter must be operated with great care when working in the 

vicinity of an exposed conductor or bus line.   

  The meter is prohibited from being used in the vicinity of any 

explosive gas, vapor or dust. 

  The measurement must be made with correct input terminals and 

functions and within the allowable measuring range.   

  To prevent the meter from being damaged, the value to be input shall 

not exceed the extremes allowed by each measuring range.   

  When the meter has already been connected to the line being 

measured, the operator is prohibited from touching the input terminal 
that is not in service. 

 

  When the voltage measured exceeds DC60V or AC30V (valid value), 

the operator shall be careful enough to avoid electric shock.   

Summary of Contents for MT-1220

Page 1: ...MT 1220 MT 1225 3 1 2 Digital Multimeter User s Manual 1 st Edition 2020 2020 Copyright by Prokit s Industries Co Ltd...

Page 2: ...this meter ensure that the test lead is flawless 1 1 2 Safety Considerations When the meter is used in the vicinity of the equipment that produces strong electromagnetic interferences the reading on t...

Page 3: ...the circuit to be measured the operator must first power off the aforesaid circuit Before repairing TV sets or measuring power switching circuit the operator must be careful enough to prevent high amp...

Page 4: ...itance may promise the dangerous voltages even if the power supply to the meter is cut off The operator should stop using and maintain the meter immediately if any abnormality has been observed on the...

Page 5: ...2 Symbols Description Symbol Description Low battery To avoid electric shock or personal injury as a result of incorrect reading promptly replace the battery when the low battery symbol appears Auto p...

Page 6: ...scription COM All public input terminals to be measured are connected to test leads in black or the public output plugs of exclusive multi function test sockets V mA Positive input terminals connected...

Page 7: ...asured In parallel connection with the circuit to be measured Read the measured voltage value on LCD screen When DC voltage measurement is attempted the display unit will show the voltage polarity of...

Page 8: ...t the test leads in black and in red to COM input socket and V input socket respectively Connect the test leads in black and in red to the positive and negative poles of the diode to be tested respect...

Page 9: ...d current is less than 200mA connect the test lead in red to a 10A input socket when the measured current is 200mA 10A Disconnection of the circuit to be measured Connect the test lead in black to the...

Page 10: ...temperature is less than 10 and relative humidity is below 80 Storage temperature humidity 10 60O C Batteries shall be removed when RH is below 70 Coefficient of temperature 0 1 accuracy O C 18 O C or...

Page 11: ...4 2 2 AC Voltage Measuring range Resolution Accuracy 200V 100mV 1 readings 10 digits 600V 1V 1 2 readings 10 digits Input impedance 1M Maximal input voltage 600V DC or AC valid value Frequency respon...

Page 12: ...letion of previous measurement 4 2 7 Temperature only MT 1225 Measuring range Resolution Accuracy 20 1000 1 1 0 Reading 3 digits Overload protection 250V DC AC 5 Meter Maintenance This section provide...

Page 13: ...ver to replace batteries unless you have already powered off the device and carried out an examination to ensure that the test lead has been disconnected from the circuit to be measured Battery Replac...

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Page 23: ...MT 1220 MT 1225 3 1 2 1 MT 12 2000 AD 1 1 A B 60Vdc 30Vac 3 1 5V AAA 600V...

Page 24: ...AC DC CAT 600 V European Union 1 2 600V 250V mA F200mA 250V A F10A 250V 2 2 1 LED...

Page 25: ...HFE 2 2 NCV hFE V mV V mV 1x10 3 0 001 A mA A mA 1x x10 3 0 001 k M k 1000 M 1 000 000 2 3 HOLD 15 3 30 2 4 COM V mA mA 10A 10A...

Page 26: ...2 5 K 3 3 1 HOLD H H 15 3 2 200 0mV 2 000V 20 00V 200 0V 600V 200 0V 600V 600V 600V V V COM V 200 0 2 000k 200 0k 2 000M 20 00M COM V 20M OL...

Page 27: ...COM V OL 0 5V 0 8V 50 hFE 36V hFE NPN PNP e b c HFE hFE 2mA 20 00mA 200 0mA 10 00A 250V COM 200mA mA 200mA 10A 10A OL COM V NCV NCV 30V...

Page 28: ...RH 0 1 18 28 600V mA F200mA 250V A F 10A 250V 3 2000 counts OL 3 x 1 5V AAA 148mm L 79mm W 48mm H 210g 4 2 18 28 80 200mV 0 1mV 0 5 5 2V 1mV 20V 10mV 200V 100mV 600V 1V 0 8 5 1M 600V DC AC 200V 100mV...

Page 29: ...1 3 2k 1 200k 100 2M 1k 20M 10k 1 5 3 250V DC AC 2 4 V 0 8mA 2 4V 30 250V DC AC hFE hFE 0 1000 10 A Vce 2 8V 2mA MT 1220 0 01 A 1 5 20mA 0 01mA 200mA 0 1mA 10 00A 10mA 3 10 mA F200mA 250V 10A F10A 250...

Page 30: ...MT 1225 20 1000 1 1 0 Reading 3 digits 250V DC AC 5 5 1 5 2 F200mA 250V F10A 250V 3 x 1 5V AAA...

Page 31: ...12 0755 83692415 83692986 83246594 83247554 400 169 9629 0755 83692143 130 7 5 886 2 22183233 E mail pk mail prokits com tw 1365 25 403 5 0755 83692415 0755 83692143 400 1699 629 E mail shenzhen mail...

Page 32: ...2020 Prokit s Industries Co Ltd All rights reserved 2020001...

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