Strain Gages, Sources of

[gmv]

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.


--
Sincerely,
gmv
No Emails, Possible Spams.

 

[John Popelish]

gmv wrote:

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.

--
Sincerely,
gmv
No Emails, Possible Spams.

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.

--
John Popelish