Recent content by Jim Sanderson

Good point, I can program the controller to check every 5 minutes, so it will only be a pulse. Do you think 316 would be suitable or should I go for something better?

Hello, I am looking to use some stainless steel probes in a septic tank to indicate different water levels. i.e. bottom probe would be 0v then propes further up would be set at 12v and taken to 0V when the water level reaches them. Current draw will be very minimal 2 or 3 mA. The big question...

These are for ideal conditions but shouldn't vary too much. Here is Australia our electrical supply system specifies 230V although the service rules allow +10% to -2% for supply to the house. This means you could have between 225V and 253V depending on how far from the transformer you are. Let's...

Hello, I was putting together some information to calculate water flow rates from fire hydrants and hoses. I have attached a copy in case anyone would be interested to have a look and point out any issues. We use the Freeman formula for this which makes it pretty easy. Q=AV Q is quantity of...