I'm happy to find this forum. Seems like I'm always building something, so this will definitely be a valuable resource. My current project is modifying a pellet smoker to automatically reignite if it goes out (which happens from time to time). I've got everything worked out with the project & it's mostly done except for a time based kill switch (in the event it fails to reignite). The temperature controller I'm using will activate the element in the event temp drops down to 140 deg F (temp only drops this low if it's out or going out). When temp rises back to over 150 controller will shut off the element. The controller I'm using is electronic and programmable, so I can adjust these parameters as required at a later time. My concern is in the event it fails to reignite. I thought about using a NC Thermo switch with a relay to kill power based on temp, but since the element itself produces heat, I'm thinking it would be safer/better to shut things down based on time.
I could do this a couple ways using low voltage controllers, but I don't have a lot of room for components & don't wish to run a voltage converter. What I'd really like is a device that would automatically cut 120V to the element anytime the circuit is powered for more than 5 minutes (more than enough time for ignition to occur). I figured such a device should be easy to find, but I have been scouring the internet for hrs and cannot find anything that fits my needs. Is anyone here aware of such a switch? The element is 500w. I will need this device to automatically reset when 120vac is removed & reapplied.
Any suggestions or advice would be appreciated. Thank you. Tim
I could do this a couple ways using low voltage controllers, but I don't have a lot of room for components & don't wish to run a voltage converter. What I'd really like is a device that would automatically cut 120V to the element anytime the circuit is powered for more than 5 minutes (more than enough time for ignition to occur). I figured such a device should be easy to find, but I have been scouring the internet for hrs and cannot find anything that fits my needs. Is anyone here aware of such a switch? The element is 500w. I will need this device to automatically reset when 120vac is removed & reapplied.
Any suggestions or advice would be appreciated. Thank you. Tim