PID help

S

Skiller1nc

Joined
Jun 27, 2016
Messages
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Ok so I have my tempering toaster with a PID installed so I can monitor the temperature accurately. The top row in the PID displays current temp and the bottom is just a set point, idk I haven't changed it. I've read the instructions it came with multiple times as well as done some researching on here and google and can't find an answer. Can I set up the bottom row to display the highest temperature the PID has reached in say the last hour or since it has been plugged it? I'm having some discrepancies in where the toaster is set, what the PID reads, and what the temper colors show. For example. I set the toaster to 450, it normally only reaches 325-350. Ive ran it for hours while in the shop and checked it every so often and it never breaks 350 degrees. The other day I put a knife into temper, came back 2 hours later and it was a blue gray. I don't think the toaster reached 550-650 degrees but I can't know for sure, thus the pid setting could help with that.
 
Is your toaster oven insulated? If not, it is probably not going to come up to the temperature you want. That's the case with mine. I'm back to using the kitchen oven until I insulate mine for find something better.

You might also put the probe at a different place in the oven and see what you get.
 
Which PID controller do you have?

It is very unusual to have max/min memory on a lower-end controller, so you probably can't show the max reached.

From the description, you seem to be using the PID controller solely as a pyrometer, with the original toaster oven controls doing the temperature control. Is that how it's set up at present?
 
It is a cheap pid from amazon. F/C PID Temperature Controller, AGPtEK Dual Display Digital Programmable Temperature Control TA4-SSR Solid State Relay with 2 Alarms... ANd correct its just set up with a type k thermocouple to read temp not control the oven.
 
Skiller1nc said:
It is a cheap pid from amazon. F/C PID Temperature Controller, AGPtEK Dual Display Digital Programmable Temperature Control TA4-SSR Solid State Relay with 2 Alarms... ANd correct its just set up with a type k thermocouple to read temp not control the oven.
Click to expand...
If that is the case, then it could be the internal oven thermostat is way out of calibration... not letting it get any hotter
 
If I had blue/gray temper colors on a knife the oven definitely got up past 500 wouldn't you say? I know that temper colors and temperature can vary due to atmosphere and all but blue-gray is a very hot temper. but at the same time, a 100-150 degree swing seems high for even a toaster oven.
Cushing H. said:
If that is the case, then it could be the internal oven thermostat is way out of calibration... not letting it get any hotter
Click to expand...
 
Yeah. Iconography have the temper colors committed to memory.. but I believe you. If you have time... I would relocate the sensor to where the steel is. It could be that you have a really uneven temperature in the oven. If that is so... you really need to understand and correct it....
 
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