Time Delay Relays are available with fixed or variable settings. if you're going the mechanical approach vs scripted monitor and SNMP sort of trigger, you can use this to cause a standard relay or SCR to trip to raise the alarm (and hopefully also flash a warning light and/or audibly sound an alert where people are supposed to be) when both sensors read positive and then have the TDR do its thing when the timer expires.
Word of caution though... any system like this needs to have some sort of a reset and bypass in case anyone can actually catch it before it goes down and restore environmentals rather than taking the hard outage since that alone does lots of damage to equipment that has been in place for a good while. You also probably ought to make sure that the present state of said system and its pieces are visible so you can make sure you're going to restart correctly. -Wayne On Mon, May 27, 2019 at 06:20:36PM +0000, Mel Beckman wrote: > We considered this approach, but we wanted to have notifications precede shut > down, and give a remote support person the ability to prevent the shut down. > Our SNMP based system gives us that option. > > -mel > > > On May 27, 2019, at 11:16 AM, Brian Kantor <br...@ampr.org> wrote: > > > > A simple air conditioner thermostat wired to the EPO switch. > > For safety, wire two thermostats in series so BOTH have to trip > > before power is shut off. > > > > Note that the EPO rarely does an orderly shutdown, but then this > > is a sort of an emergency. > > - Brian > > > > > >> On Mon, May 27, 2019 at 02:00:39PM -0400, Dovid Bender wrote: > >> Hi, > >> > >> Is anyone aware of a device that will cut the power if the room goes above > >> X > >> degrees? I am looking for something as a just in case. > >> > >> > >> Regards, > >> > >> Dovid > >> --- Wayne Bouchard w...@typo.org Network Dude http://www.typo.org/~web/
