Recent content by plnewton

Yes, a pressure switch would be most accurate but the issue with the switches is the space they require, each cartridge has three chambers which will require a 3mm tube coming out of each chamber, bare in mind as the cartridge moves back and forth these hoses (along with the ink feed tubes that...

That would be the simplest method and the certainly the cheapest. I am no expert with a multi-meter by any means but there is a level of resistance in the ink, it is a dye based ink so I would expect there would be a fair percentage of water in it anyway I stumbled across this last night...

Guys a while back we put a little thought into using waterproof ultrasonic sensors as well but thought these would not be accurate enough, basically by measuring the distance between the top of the chamber and the top of the ink level. Has anyone had success with these in this type of environment?

Yes, I have looked at magnetic sensors but as we are very limited for space it was not possible. The Cartridge has three internal chambers with the sizes mentioned in my first post. I have external access to two of the chambers but not the third and as the chambers are very close together I...

OK so far so good, 1 foot would be more than enough length out of the chamber in fact we could probably get away with about 6 inches.. However another thought just crossed my mind, the chamber also moves back on forth during the print process which would interfere with the pressure as well...

Hi, Yes, I have just read the details from the link that vk6kro posted and I see that it is the pressure change within the fluid it self rather than the entire chamber. How close would we need to install the switch to the chamber? would it need to be sitting on top of the chamber or can it...

Hi, Thanks for the reply.. Using a pressure type switch is possible but I would prefer to try an avoid a sealed chamber if I could, we were doing something before which relied on the chambers being sealed but it proved difficult as the plastic chambers are made from a poly plastic and are...

Hi All, Wondering if someone can give me some pointers on some fluid level sensors or switches. He is a short run down on what I want to achieve. What we want to do is create a system where we can keep a fluid level (dye based Ink) a constant level inside a chamber. We are confined...