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Electrician Talk Forum
Tester Repaired , Certificate Of Test Issued, Not Calibration.
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<blockquote data-quote="pewter" data-source="post: 351140" data-attributes="member: 15463"><p>If its flashing its less then 0 &lt;0.00</p><p></p><p>example:</p><p></p><p>-if measure leads and its 0.16, press the test to null them to get zero. </p><p></p><p>-If you touch them together again and get flashing &lt;0.00 its less then 0.</p><p></p><p>-If you un null the leads and measure them you will find lead is now measuring less 0.14 for example.</p><p></p><p>thats a problem as all results would be -0.02.</p><p></p><p>I only get a reading when the leads complete a circuit and measure the resistance of something or just the leads.</p><p></p><p>What i have done to test the problem is connect the 2 leads together as if to null them.</p><p></p><p>I usually get around 0.14.</p><p></p><p>By moving the actual lead around which causes the plug to move, it then increases in resistance.</p><p></p><p>So i can connect (or could) connect the 2 leads together get a reading of 0.22, move the plug and get anything from 0.1-1.1</p><p></p><p>I could null leads, then crouch down to measure R1+R2 on a socket, recheck the leads and they have gained resistance, affecting the result.</p><p></p><p>This company have had a few problems with this, i was told.</p><p></p><p>I always switch the machine off after use (unless i forget)</p><p></p><p>Since i had the problem the first time i always check they say 0 (not &lt;0.00 ) before and after measuring resistance on everything. This way i am checking the reading is true not affected by a change in resistance of the leads.</p><p></p><p>Im glad i made the video this morning to prove what it was doing, as its now working fine almost ( i only see a change of 0.01 if i really rotate the plug)</p><p></p><p>I was told they fitted new sockets this time.</p></blockquote><p></p>
[QUOTE="pewter, post: 351140, member: 15463"] If its flashing its less then 0 <0.00 example: -if measure leads and its 0.16, press the test to null them to get zero. -If you touch them together again and get flashing <0.00 its less then 0. -If you un null the leads and measure them you will find lead is now measuring less 0.14 for example. thats a problem as all results would be -0.02. I only get a reading when the leads complete a circuit and measure the resistance of something or just the leads. What i have done to test the problem is connect the 2 leads together as if to null them. I usually get around 0.14. By moving the actual lead around which causes the plug to move, it then increases in resistance. So i can connect (or could) connect the 2 leads together get a reading of 0.22, move the plug and get anything from 0.1-1.1 I could null leads, then crouch down to measure R1+R2 on a socket, recheck the leads and they have gained resistance, affecting the result. This company have had a few problems with this, i was told. I always switch the machine off after use (unless i forget) Since i had the problem the first time i always check they say 0 (not <0.00 ) before and after measuring resistance on everything. This way i am checking the reading is true not affected by a change in resistance of the leads. Im glad i made the video this morning to prove what it was doing, as its now working fine almost ( i only see a change of 0.01 if i really rotate the plug) I was told they fitted new sockets this time. [/QUOTE]
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Tester Repaired , Certificate Of Test Issued, Not Calibration.
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