[TheForge] Power hammer Vs air hammer

[Grover Richardson]

We are not talking precision<G>.  There is a pressure diaphragm in the
switch.  When it sees a certain pressure, the switch is closed.  So long as
the material that is pressurized is compatible with the materials, it will
work fine.

Pressure switches that I have purchased before have a pressure rating.  They
then have additional specifications about repeatability and accuracy.  So
long as you do not apply more pressure to the switch than it is rated to see
(another specification), you won't hurt it.

So, for example.

Pressure switch that closes at 20 psi, rated to 200 psi.  Repeatability 5%,
accuracy 10%.  I just pulled those out of the air, but my point is made.
The pressure of closing is low enough that you ensure that it will close if
there is air.  Any repeatability or accuracy is negligible in this instance.
And you can apply up to 200 psi before it breaks.

All the Best


>*>-----Original Message-----
>*>From: theforge-bounces at mailman.qth.net 
>*>[mailto:theforge-bounces at mailman.qth.net] On Behalf Of John Husvar
>*>Sent: Wednesday, May 24, 2006 7:41 AM
>*>To: theforge ABANA
>*>Subject: Re: [TheForge] Power hammer Vs air hammer
>*>
>*>
>*>
>*>
>*>
>*>On 5/23/06 7:34 PM, "Demon Buddha" <osan at netlabs.net> wrote:
>*>
>*>> 
>*>> 
>*>> Rich Maynard wrote:
>*>>> My suspicion is that with a compressible fluid you would 
>*>not be able 
>*>>> to rely on positioning like that unless you incorporated 
>*>some kind of 
>*>>> feedback.
>*>>