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MT-1220/MT-1225 3-1/2 数字电表使用说明书

 

1.

 

概述 

MT-12 系列是测量精度高,响应速度快,安全可靠的多用数字仪表,内嵌有 2000 计数的专用芯
片,此芯片为高精度 AD 搭配高速数字处理器组成,具有测量准确,分辨率高,运算速度快特点。
整机软件校准,长期使用精度有保证。能满足电器,电子,电工,教学,专业工程师,维修人员,
电子爱好者等各种应用及人群的使用,是一款理想的测试工具。 
使用前,请仔细阅读使用说明书并请注意有关安全工作准则。 

1.1.

 

安全信息 

 

安全说明 

使用本仪表时,使用者必须遵守关于以下两方面的全部标准安全规程:   
A  防止电击方面的安全规程 
B  防止错误使用仪表方面的安全规程 
为保证人身安全,请使用随表提供的测试笔。在使用前,检查并确保它们是完好的。 

 

安全注意事项 

 

在电磁干扰比较大的设备附近使用仪表,仪表的读数会不稳定,甚至可能会产生较大
的误差。 

 

当仪表或表笔外观破损时,请不要使用。   

 

若不正确使用仪表,仪表提供的安全功能可能会失效。 

 

在裸露的导体或总线周围工作时,必须极其小心。 

 

禁止在爆炸性的气体、蒸汽或灰尘附近使用本仪表。 

 

必须使用正确的输入端、功能、量程来进行测量。 

 

输入值切勿超过每个量程所规定的输入极限值,以防损坏仪表。 

 

当仪表已连接到被测线路时,切勿触摸没有使用的输入端。 

 

当被测电压超过 60Vdc 或 30Vac 有效值时,小心操作防止电击。 

 

使用测试笔测量时,应将手指放在测试笔的护环后面。 

 

在转换量程之前,必须保证测试笔已经离开被测电路。 

 

对于所有的直流功能,为避免由于可能的不正确读数而导致电击的危险,请先使用交
流功能来确认是否有任何交流电压的存在。然后,选择一个等于或大于交流电压的直
流电压量程。 

 

在进行电阻、二极管、电容测量或通断测试前,必须先切断被测电路电源,并将被测
电路里所有的高压电容器放电。 

 

不可在带电的电路上测量电阻或进行通断测试。. 

 

在进行电流测量前,应先检查仪表的保险管。在仪表连接到被测电路之前,应先将被
测电路的电源关闭。 

 

在进行电视机维修或测量电源转换电路时,必须小心被测电路中的高幅电压脉冲以免
损坏仪表。 

 

本仪表使用 3 节 1.5V AAA 电池供电,电池必须正确安装在仪表的电池盒内。 

 

当电池欠压符号        出现时,应立即更换电池。  电池电量不足会使仪表读数错误,从
而可能导致电击或人身伤害。 

 

在进行测量类别.Ⅱ电压测量时不可超过 600V。 

 

仪表的外壳(或外壳的一部分)被拆下时,切勿使用仪表。 

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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