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  When making measurement with a test lead, place your fingers 

behind its protective ring. 

  When switching to another measuring range, be sure that test lead 

has already been taken off the measured circuit. 

  For all DC functions, to prevent potential electric shock as a result of 

incorrect reading, please first use AC functions to check the absence 
of any AV voltage. Then, select DC voltage measuring range 
equivalent to or greater than that for AC voltage.   

  Before the tests on electric resistance, diode, continuity, the operator 

must cut off the power supply to the circuit to be measured, and 
discharge all high-voltage capacitors within the circuit to be 
measured.   

  The electric resistance measurement or continuity test cannot be 

carried out in any live electrical circuit.   

  Before the current measurement, the operator must first examine the 

protective tube of the meter. Before connecting the meter to 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 amplitude voltage 
impulse from damaging the meter.   

  This meter uses 3 x 1.5V AAA batteries that must be correctly 

installed into the battery compartment. 

  When 

 

appears, the batteries must be replaced immediately. The 

low level of a battery will result in incorrect reading on the meter, 
which is likely to bring electric shock or personal injury to the operator.   

  In measurement, category II voltage shall not exceed 600V 

respectively.   

  The meter shall not be in service if its case (or part of its case) is dismantled. 

1.1.3 Safety Symbol: 

The safety symbols that appear on the meter's body and in this 
Operation Manual: 

 

Warning, an important safety symbol. The operator 

must consult this Operation Manual before using the 
meter. Unintended use may lead to the damage to 
the device or its components.   

 

High voltage warning 

 

Equipment with double insulation or reinforced 
insulation protection

 

 

AC (alternating current) 

Содержание MT-1220

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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