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« Last post by ketel3 on March 08, 2021, 11:10:57 PM »
But the controller has more options,if you only want a safety warning or shut off the power to the heaters in case the pressure for whatever reason is to high into the boiler there is simpel way.
You can use a simple analoge pressure meter with build in electrical contact.
This meters have a adjustable needle for the setpoint,so you can adjust the allowed pressure by this.
Just a wire is needed from the pressure meter contact to the NBK / PVC connector of the controller , if the pressure rises to the alarm level setpoint the power to the heaters will be disconnected.
The cable with connector is available on HelloDistillers webshop or local electronic shop.
These pressure meters are available over a large range ,for a simple setup choose a meter into the range 0 to 0,25 Mpa will be ok .
Or into the range 0 to 0,16 Mpa, or the value that fits to your boiler and column.
I will include a picture, prices on Aliexpress about $10 incl shipping.