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Strain Gages, Sources of

G

gmv

Jan 1, 1970
0
Hello,

Does anyone know a good source for strain gages ?

I just want a strain gage and not the electronics
everyone tries to sell with it.

I checked Google and could find only one supplier
and the prices were all too high.

I am experimenting with the idea of using a strain gage
as a seismic sensor and need a cheap source of parts.
Used parts are A-OK.

I figure you might be able to simply support a mass
upon a strain gage somehow then extract the signal
down to the noise grass then look for seismic signals.

Any ideas here are welcome.
 
J

John Popelish

Jan 1, 1970
0
gmv said:
Hello,

Does anyone know a good source for strain gages ?

I just want a strain gage and not the electronics
everyone tries to sell with it.

I checked Google and could find only one supplier
and the prices were all too high.

I am experimenting with the idea of using a strain gage
as a seismic sensor and need a cheap source of parts.
Used parts are A-OK.

I figure you might be able to simply support a mass
upon a strain gage somehow then extract the signal
down to the noise grass then look for seismic signals.

Any ideas here are welcome.

You can use guitar strings or any other wire as a strain gage. Any
arrangement that stresses the wire to less than its elastic limit will
work pretty well. I have heard of open wire strain gages strung
across faults to measure small slow movements. Usually they fold the
wire double, so that it forms a flat loop that is more immune to
magnetic interference.
 
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