IOWA CITY MODERATED FORSALE NEWSGROUP > Tools
> Power Tools
> 2007
> Hi and low air pressure switch,pneumatic window limit
Hi and low air pressure switch,pneumatic window limit
These are being sold as used although they were not installed in the machine control cabinet. What they are exactly is a silicone diaphram isolated pressure actuator. Used for air water and other media compatible with silicone brass and aluminum construction. There are two pressure settings to adjust from 0.1 Bar to 5 Bar pressure. When the media pressure a[[lied to the port is above the minimum and below the maximum that you have set, the switch (SPDT) will actuate. Thus can be wired as a fail-safe device. Contacts revert if pressure exceeds max or falls below the min setting. Therefore will permit operation of connected load ONLY when the applied pressure is within the window you have set. We had built controls for Plasma welders and they were for them so that when plasma nitrogen and CO2 sheild gasses were not in range the power to the torch would cease before burning up the consumables or drasticly shortening the life of them. 14.5 PSI is equal to 1 Bar, so switch is settable from 7 psi to 70 psi roughly. inlet is 3/8 BPT with bushing to 1/4 NPT.
