Hi all,
Wasn't sure of the best place to post this,
We are off grid and have two thermal stores, one in the house heated by wood burner, the other in a shed around 100ft away (cable length) which will be heated by the water jacket of the backup generator.
The stores will pump from one to another depending on where the most heat is
I fitted 3 thermocouple sensors to each store and want to use a pic to decide when to pump and which way etc
Question is which is the best way to achieve this? I have a few cat5 cables I put in so I could,
Use 2 pic on for each store and send the 3 temperature readings down the cable.
Use one pic,
Connect the 3 thermocouple from one store to the cat 5 cable and send the very small signal down the cable.
Have the amplifiers at the remote store and send the amplified signal down the cable.
I know pic don't like long cables and am not really sure which way is best?
There is a 240v mains cable in the same duct as the cat5 but it's armour cable with the outer earthed.
Cheers Geoff
Wasn't sure of the best place to post this,
We are off grid and have two thermal stores, one in the house heated by wood burner, the other in a shed around 100ft away (cable length) which will be heated by the water jacket of the backup generator.
The stores will pump from one to another depending on where the most heat is
I fitted 3 thermocouple sensors to each store and want to use a pic to decide when to pump and which way etc
Question is which is the best way to achieve this? I have a few cat5 cables I put in so I could,
Use 2 pic on for each store and send the 3 temperature readings down the cable.
Use one pic,
Connect the 3 thermocouple from one store to the cat 5 cable and send the very small signal down the cable.
Have the amplifiers at the remote store and send the amplified signal down the cable.
I know pic don't like long cables and am not really sure which way is best?
There is a 240v mains cable in the same duct as the cat5 but it's armour cable with the outer earthed.
Cheers Geoff