pressure sensor to detect vacuum breach - where to buy?

[peter888]

Does anyone know if there is a sensor I can buy which I could put in a vacuum bag that would detect if the vacuum is breached? E.g. from a tear in the bag.

 

[Colin Mitchell]

This module is just $2.00 posted. You will need a microcontroller driver
http://www.ebay.com/itm/BMP180-Repl...WC-/221485468940?ssPageName=ADME:L:OU:AU:1120

 

[KrisBlueNZ]

Is an electronic solution the best option? How about some kind of chemical-based indicator that changes colour when it absorbs moisture? Or something else like that? Have you done your due Google diligence?

 

[Colin Mitchell]

The cheapest is oxygen detecting crystals

 

[Gryd3]

I guess that depends on the application.
Vacuum forming would ideally use an electronic solution... same thing with perhaps fiberglassing.
If your looking for long-term vacuum applications than it may be worthwhile to look at chemical solutions.
More information would be welcome.

 

[KrisBlueNZ]

The cheapest is oxygen detecting crystals

Sounds like a good idea. But how do you get them into the bag in the first place?