background image

 

 

 

温度测量(仅 MT-1225) 

量程 

分辨率 

准确度 

-20℃~1000℃ 

1℃ 

±(1.0% R 3 digits) 

超载保护:250V DC/AC 

5.

 

仪表维护 
本节提供基本的维护资料,包括更换保险管和更换电池的说明。 
除非您是有经验的维修人员且有相关的校准、性能测试以及维修资料,否则不要尝试去维修
本仪表 

5.1.

 

一般维护   

 

为避免受到电击或损坏仪表,不可弄湿仪表内部。在打开外壳或电池盖前,必
须把测试笔和输入信号的连接线拆除。 

定期使用湿布和少量洗涤剂清洁仪表外壳,  请勿用研磨剂或化学溶剂。 
输入插座如果弄脏或潮湿可能会影响读数。 

 

清洁输入插座: 

 

关闭仪表,并将所有测试笔从输入插座中拔出。 

 

清除插座上的所有脏物。 

 

用新的棉花球沾上清洁剂或润滑剂,清理每个插座,润滑剂能 

 

防止和湿气有关的插座污染。 

5.2.

 

更换电池及保险丝 

 为避免错误的读数而导致受到电击或人身伤害,仪表显示器出现“

     

   

”符号

时,应马上更换电池。   
只能使用指定的保险丝(F200mA/250V,F10A/250V  速熔保险丝) 
为避免受到电击或人身伤害,在打开电池盖更换新电池之前,应关机并检查测试笔
已从测量电路断开。 

 

更换电池或保险丝: 

 

关断仪表电源。 

 

将所有测试笔从输入插座中拔出。 

 

更换电池 

 

用十字螺丝刀取出固定电池盖的螺钉。 

 

取下电池盖。 

 

拿掉旧电池,换上新的 3 x 1.5V AAA 电池。 

 

装上电池盖,上紧螺钉。 

 

更换保险丝 

 

拿掉防护胶套。 

 

用十字螺丝刀取出固定仪表后盖的螺钉。 

 

取下仪表后盖。 

 

拿掉损坏的保险丝,换上符合规格的新保险丝。 

 

装上仪表后盖,旋紧螺丝。 

 

装上防护胶套。 

 

 

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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