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Topic: Can't decide whether the resistance is too high or too low to be measured (Read 830 times) previous topic - next topic

amundsen

Hello,

I am trying to build pressure sensors with Linqstat film but I don't know how to interpret the resistance's values I am reading on my digital multimeter.

Whatever the range I choose (up to 20 Mohms) the displayed value is 1. Does it mean the resistance is always bigger than the highest range or that it is always smaller ? I am sure the multimeter is OK because I have checked it with a resistor before.

JoeO


Hello,

I am trying to build pressure sensors with Linqstat film but I don't know how to interpret the resistance's values I am reading on my digital multimeter.

Whatever the range I choose (up to 20 Mohms) the displayed value is 1. Does it mean the resistance is always bigger than the highest range or that it is always smaller ? I am sure the multimeter is OK because I have checked it with a resistor before.

Yes, or your DVM/leads are bad. 
When you short the 2 leads together do you get a very small reading, less than an ohm?

winner10920

A way to check if its too low is to put the meter on continuity test, it will beep or eatever if its low ohms,
It sounds suspicious that it has the same value throughout the ranges, maybe the pressure switch is nott making a connection somewhere

amundsen



When you short the 2 leads together do you get a very small reading, less than an ohm?


Indeed. So do you think that if I read 1. it means the resistance is overriding the multimeter's range ?

winner10920

either its a really cheap multimeter and i would suggest getting a new one, or its not connected
the multimeters ive used would atleast give me like a .2 or some decimal number for a low resistance

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