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26 

在測量

30V

以上電壓,測量

10mA

以上電流,測量帶電感負載的交

流電力線,測量電力波動期間的交流電力線時,謹防電擊。

 

2.

測量前,檢查功能

/

量程選擇開關是否置於正確的檔位,要檢查表棒

是否可靠接觸,是否正確連接、是否絕緣良好等,以避免電擊。

 

3.

儀錶只有和所配備的表棒一起使用才符合安全標準要求。如表棒線

破損時,必需更換上同樣型號或者相同電氣規格的表棒線。

 

4.

不要使用其他未經確認或未認可的保險管來更換儀錶內部的保險

管,只能換上同樣型號或相同規格的保險管,更換前表棒必需離開被
測量點

,

確保輸入端無任何信號。

 

5.

不要使用其他未經確認或未認可的電池來更換儀錶內的電池,只能

換上同型號或相同電氣規格的電池,更換前表棒必需離開被測量點,
確保輸入端無任何信號。

 

6.

在進行電氣測量時,身體切勿直接接觸大地,不要接觸可能存在地

電勢裸露的金屬端子、輸出口、引線夾等。通常使用的乾燥的衣服、
膠鞋、膠墊以及其他絕緣材料,保持你的身體與大地絕緣。

 

7.

不要在高溫、高濕、易燃、易爆和強磁場環境中存放及使用。

 

8.

測量超過儀錶所允許的極限電壓值有可能損壞儀錶和危及操作人

員的安全。在儀錶面板上標有儀錶所允許測量的極限電壓值,切勿測
量超過此標準的安全,請勿輸入超過規定的極限值,以防電擊和損壞
儀錶。

 

9.

當表棒線插入電流插座時切勿測量任何電壓以免損壞儀錶和危及

操作人員的安全。

 

10.

不要嘗試校準或維修儀錶。有需要時必須有專門培訓或認可的有

資格專業人員才能進行。

 

11.

在測量時功能

/

量程選擇開關必需置於正確的量程檔位,在轉換功

/

量程選擇開關時,請一定要先將表棒線與被測物件斷開,確保輸

入端沒任何信號輸入。嚴禁在測量進行中轉換功能

/

量程選擇開關。

 

12.

LCD

顯示

 

時,請及時更換電池以確保測量精度。

 

13.

不允許表棒插在電流端子去測量電壓!

 

14.

請不要隨意改變儀錶線路,以免損壞儀錶和危及安全。

 

 

Summary of Contents for MT-1820

Page 1: ...MT 1820 3 5 6 Dual Display DMM w USB Connector User s Manual 1st Edition 2016 2016 Copyright by Prokit s Industries Co Ltd...

Page 2: ...el Description 5 Property 7 DC Voltage DCV 7 AC Voltage ACV 8 DC Current DCA 9 AC Current ACA 11 Resistance 12 Diode and Continuity Test 14 Capacitance C 15 Frequency Hz 16 Transistor Test 18 Temperat...

Page 3: ...MANUAL range selection Auto Power Off and Alarm Buzzer The instrument adopts the directly driven 4 digits microprocessor and dual integral A D converter which provide the high solution and high accura...

Page 4: ...ck 3 It meets the requirements of the safety standard only to use the instrument with the equipped test lead If the test lead is broken should replace it by the same type and same electric specificati...

Page 5: ...ould operate it by the specially trained or qualified professional people 11 The function range selection knob should be set in the correct range when measuring When switching the function range selec...

Page 6: ...n for 2 sec return to Auto Range mode There is no Manual Range mode at Frequency hFE and Capacitance range 4 HOLD Date Hold button press the button the value is held on LCD Press the button again exit...

Page 7: ...cancel the Relative Value Measurement Keep pressing the button more than 2 seconds to switch to RS232 symbol appears on LCD it indicates the instrument is getting into the status of data transmission...

Page 8: ...g including batteries Technic Property 1 Accuracy a reading digits at 23 5 C relative humidity 75 2 One year calibration guarantee since the time dispatched from the factory DC Voltage DCV 1 Turn the...

Page 9: ...1000V DC or 750V AC peak value AC Voltage ACV 1 Turn the function range selection knob to ACV DCV press SELECT button to switch to ACV measurement mode Insert the red and black test lead separately to...

Page 10: ...plete the measurement Range Accuracy Resolution 6V 0 8 10d 1mV 60V 10mV 600V 100mV 750V 1 0 10d 1V Input impedance 10M Overload protection 1000V DC or 750V AC peak value Frequency response 40 400Hz In...

Page 11: ...gher than 600mA at mA Range otherwise the fuse will be burnt out or the instrument will be damaged b Do not connect the test lead to any circuit in parallel when the test lead is inserted in the curre...

Page 12: ...aneously 3 At the Manual Range mode if OL is displayed on LCD it indicates the tested current value has exceeded the present range limit please select the higher range to complete the measurement Note...

Page 13: ...5A 250V fuse 10A 250V fuse Duty Circle Indication 0 1 99 9 Resistance 1 Turn the function range selection knob to insert the red and black test lead separately to V Hz and COM input terminal 2 Connect...

Page 14: ...been turned off and all capacitors are fully discharged b It will cause the reading incorrect to input any voltage when measuring the resistance If the voltage exceeds 250V over range protection volta...

Page 15: ...he red test lead to the positive pole of the tested diode BLACK test lead to the negative pole 4 Read the present test result from LCD Note no Bar Graph display at Diode Range Note a If the diode is o...

Page 16: ...Connect the test lead to the tested capacitor in parallel the tested capacitor value will be displayed on LCD 3 If OL is displayed on LCD it indicates the test capacitor value has exceeded the presen...

Page 17: ...ert the red and black test lead separately to V Hz and COM input terminal 2 Connect the test lead to the tested signal source in parallel Read the present test result from LCD Note no Bar Graph displa...

Page 18: ...nd press the button third to return to the mode of AC current or voltage measurement Note a Do not input the signal more than 60V Otherwise it is possible to damage the instrument and endanger the saf...

Page 19: ...esent test result from LCD Note a Do not input the current or voltage at the input terminal of mA COM or transistor accessory otherwise it is possible to damage the instrument or endanger the safety o...

Page 20: ...grade temperature measurement mode Note a Without the signal input LCD automatically displays the present temperature b Do not replace the temperature sensor at will Otherwise the accuracy can t be as...

Page 21: ...mode Keep holding REL RS232 button more than 2 seconds RS232 symbol is displayed on LCD it indicates it is the status of the instrument connecting with PC then connect the instrument to PC by USB Cab...

Page 22: ...5 1 Loose the screw that fixes the batteries and remove the battery case 5 2 Remove the spent 1 5V batteries and replace them by two same type new batteries It is better to use alkaline batteries for...

Page 23: ...ck your Computer Properties Hardware Device Management COM 3 Open the software select the port number of this meter on the software interface of OPEN COM 4 After successfully connecting the wording US...

Page 24: ...If the fault still can t be eliminated please contact the maintenance center or the distributors Fault Solution No display Power off turn on the power Hold Key set a correct mode Replace battery symb...

Page 25: ...24 MT 1820 3 5 6 USB 25 25 2 5 27 27 2 8 2 9 DCV 29 ACV 30 DCA 31 ACA 32 34 35 C 36 Hz 37 38 39 40 40 41...

Page 26: ...25 MT 1820 3 5 6 USB 24mm LCD 61 REL USB LCD 4 A D K USB MT 1820 IEC1010 2...

Page 27: ...26 30V 10mA 2 3 4 5 6 7 8 9 10 11 12 LCD 13 14...

Page 28: ...27 1 2 61 LCD 3 RANGE 2 fHE 4 HOLD 5 Hz DUTY 6 MAX MIN MAX MIN MAX MIN 2 MAX MIN...

Page 29: ...28 7 SELECT 8 RS232 REL 2 PC LCD RS232 PC 2 RS232 LCD RS232 9 10 10A 10A 11 mA hFE 12 COM hFE 13 1 15 5 2 RS232 REL RS232 REL...

Page 30: ...29 RS232 USB 3 HOLD 2 10 HOLD 2 5999 3 5 6 A D 3 OL 0 40 80 10 50 80 1 5V AAA 185mm x 92mm x 48mm 390g d 23 5 75 DCV 1 V Hz COM 2 LCD AUTO RANGE 3 LCD...

Page 31: ...0 a DC1000V AC750V b c OL 600mV 0 5 4d 0 1mV 6V 1mV 60V 10mV 600V 100mV 1000V 1 0 6d 1V 600mV 60M 10M 1000V 750V ACV 1 SELECT V Hz COM 2 SELECT LCD AUTO RANGE Hz DUTY 220V 50Hz 400Hz 380V 50Hz 400Hz 3...

Page 32: ...31 a DC1000V AC750V b c OL 6V 0 8 10d 1mV 60V 10mV 600V 100mV 750V 1 0 10d 1V 10M 1000V 750V 40 400Hz 0 1 99 9 DCA 1 COM mA 10A 2 LCD AUTO RANGE 3 4 OL...

Page 33: ...32 a 10A 10A uA 6000uA mA 600mA b 60OuA 1 0 10d 0 1 A 60O0uA 1 A 60mA 10 A 600mA 100 A 6A 1 2 10d 1mA 10A 10mA 10A 15 0 5A 250V 10A 250V ACA 1 COM mA 10A 2 SELECT...

Page 34: ...33 3 OL a 10A 10A uA 6000uA mA 600mA b 600uA 1 5 10d 0 1 A 6000uA 1 A 60mA 10 A 600mA 100 A 6A 2 0 15d 1mA 10A 10mA 10A 15 0 5A 250V 10A 250V 40 100Hz 0 1 99 9...

Page 35: ...34 1 V Hz COM 2 3 LCD AUTO RANGE 4 OL a b 250V c 600 600 0 8 5d 0 1 6k 0 8 4d 1 60k 10 600k 100 6M 1k 60M 1 2 10d 10k...

Page 36: ...35 400mV 250V 2 V Hz COM SELECT 3 4 a OL b c 250V 1 0mA 3 0V 50 0 5V...

Page 37: ...36 C 1 V Hz COM 2 3 OL a b 100uF 15 C 40nF 5 0 30d 10pF 400nF 3 5 8d 100pF 4 F 1nF 40 F 10nF 200 F 5 0 10d 100nF 250V...

Page 38: ...37 Hz 1 Hz V Hz COM 2 3 Hz DUTY Hz DUTY 4 Hz DUTY Hz DUTY Hz DUTY a 60V b 100Hz 0 5 4d 0 01Hz 1000Hz 1Hz 10kHz 10Hz 100kHz 100Hz 1MHz 1kHz 30MHz 10kHz 1 0V 250V 0 1 99 9...

Page 39: ...38 1 hFE 2 mA COM 3 NPN PNP E B C 4 a mA COM b hFE NPN PNP 0 1000 1mA VCE 2 1V...

Page 40: ...39 1 2 COM mA 3 SELECT SELECT a b c 20 400 1 0 50d 0 1 400 1000 1 5 15d 1 0 750 1 0 50d 0 1 750 1832 1 5 5d 1 K...

Page 41: ...40 1 USB USB 2 COM5 3 OPEN COM 4 USB2 0 1 2 START 3 HELP 1 2 20 3 4 1...

Page 42: ...41 2 3 4 5 LCD a b 2 1 5V 1 5V c d 1 1000V 2 3 4...

Page 43: ...42 MT 1820 12 CD 0755 83692415 83692986 83246594 83247554 0755 83692143...

Page 44: ...43...

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