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9.1  Stop  all  the  testing  work,  and  remove  the  testing  line  from 

the tested object. 

9.2 Set the switch to the 

OFF

 position. 

9.3 Remove the testing line from the instrument. 

9.4 Take off the battery cover on the back of the instrument. 

9.5  Put  into  6  pieces  batteries,  the  model  is  LR6  or 

UM-3.(Please pay attention to the battery polarity) 

9.6 Put on the battery cover. 

10.Storage   

10.1 

Set the switch to the “

OFF

 position. 

10.2  When  the  instrument  is  available  for  a  long  time,  please 

take  off  the  battery  to  avoid  the  electrolyte  discharge  resulting  in 

rust. 

10.3 Please keep the case clean. 

10.4 instrument storage: 

Storage temperature:-10

~ +50

 

Storage relative humidity: 90%RH 

The place need no dust, no causticity gas and well-ventilated. 

11 Accessory 

HDT20A:  one  plastic  cover,  a  pair  of  test  lead(with  clip),  one 

manual and one warranty card. 

HDT20B: one plastic cover, a pair of test lead (with clip), one 

manual ,one warranty card and one shielding line. 

Summary of Contents for HDT20A

Page 1: ... sure the instrument is turned off when opening the battery cover Notice Before test please sure the voltage selector switch is on the proper location After test please set the function switch to the range OFF If it is available for a long time please take out the battery for storage Please don t put the instrument in the place of high temperature humidity dew and strong light for a long time Plea...

Page 2: ... 0 01GΩ 19 99GΩ 10 1000V 0 01GΩ 19 99GΩ 2500V 0 01GΩ 19 99GΩ ACV 750V 0 1 6 AC750V input impedance 1MΩ AC750V frequency response 50 200 Hz 4 Appearance 1 Line terminal L 2 Shield terminal G the end terminal of ACV measurement 3 The positive terminal of the ACV measurement 4 Earth terminal E 5 Backlight button 6 Range switch button 7 High volt startup button 8 External power jack 9 Instrument belt ...

Page 3: ...the instrument work normally If it is off it shows maybe the battery is low voltage or battery connection is abnormally When the measurement is begun there is reading on the meter header which is the insulation resistance value of the tested object under the current voltage For the HDT20A when the test value is less than 200M Ω suggest pressing the button using 200MΩ range can make the readings mo...

Page 4: ... Storage 10 1 Set the switch to the OFF position 10 2 When the instrument is available for a long time please take off the battery to avoid the electrolyte discharge resulting in rust 10 3 Please keep the case clean 10 4 instrument storage Storage temperature 10 50 Storage relative humidity 90 RH The place need no dust no causticity gas and well ventilated 11 Accessory HDT20A one plastic cover a p...

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