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2.5.

 

配件 

使用说明书一本,  测试表笔一副    K 型热电耦一个 

3.

 

操作指南 

3.1.

 

常规操作 

 

读数保持模式   

 

读数保持模式可以将目前的读数保持在显示器上。改变测量功能档位或再按一次 HOLD
键都可以退出读数保持模式。 

 

按一次“  H  ”键,读数被保持且“ 

  ”  符号同时显示在液晶显示器上。 

 

再按一次“  H  ”键将使仪表恢复到正常测量状态。 

 

自动关机功能 

开机约 15 分钟后若无任何操作,仪表将会发出滴滴声音提示将自动切断电源,进入休眠
状态。在自动关机模式下按任何按键可重新开机。 

3.2.

 

测量指南 

 

测量交流和直流电压 

本仪表的直流电压量程为:  200.0mV、2.000V、20.00V、200.0V 和 600V;交流电压量程
为:200.0V 和 600V。 

 

不可测量任何高于 600V 直流交流有效值的电压,以防遭到电击和/或损坏仪表。 
不可在公共端和大地间施加超过 600V 直流交流有效值的电压以防遭到电击和/或损
坏仪表。 

 

将旋转开关旋至 V

或者 V

档位。 

 

分别把黑色表笔和红色表笔连接到 COM 输入插座和 V 输入插座。 

 

用测试表笔另两端测量待测电路的电压值。(与待测电路并联) 

 

液晶显示器读取测量电压值。在测量直流电压时,显示器会同时显示红色表笔所连接的电
压极性。 

 

测量电阻 

电阻的单位是欧姆(

) 

本仪表的电阻量程为 200.0

、2.000k

、200.0k

、2.000M

、20.00M

。 

 为避免仪表或被测设备的损坏,测量电阻前,应切断被测电路的所有电源并将所有高压

电容器充分放电。 

 

将旋转开关旋至合适档位。 

 

分别把黑色测试笔和红色测试笔连接到 COM 输入插座和 V/

输入插座。 

 

用测试笔另两端测量待测电路的电阻值。 

 

由液晶显示器读取测量电阻值。 

※ 

注意: 

 

在电路上所测量到的电阻值通常会和电阻的额定值有所不同。 

 

在测量低电阻时,为了测量准确请先短路两表笔读出表笔短路的电阻值,  在测量被测电阻
后需减去该电阻值。 

 

在 20M

档,要几秒钟后读数才能稳定。这对于高阻值测量来说是正常的。 

 

当仪表开路时,显示器将显示“OL”,表示测量值超出量程范围。 

 

二极管及蜂鸣通断测试 

  为避免仪表或被测设备的损坏,在二极管测量以前,应切断被测电路的所有电源并

将所有高压电容器充分放电。 

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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