Eitam:
Hello all,
I built myself a simple setup (see the pic) to read waste water quality parameters from two different containers (in the pic i used only one). I'm using 2 peristaltic pumps( pumps ) driven with L293D motor driver.
Each pump pumps liquid from one container up wait for the sensor reading and then reverse and return the liquid back (around one minute of work and one minute of rest while the second pump is running).I let it to run during the night after it worked well for 6 hours,in the morning when I came back, the pumps still worked but started to choke. (I assumed those pumps where not going to last for to long but already after one day?
)
I will be happy for any suggestions on changing my setup (different type of pumps/motor for the pumps?) for them to be able to work reliably for months.
I pushed their limit by purpose now, I can probably let the pump rest a little bit more between the pumps cycles but my needs are to take a sample as often as possible during 4 hours cycles and I have 4- 6 cycles a day. (and no, unfortunately I cant use the sensor directly in the container)
Thanks for the help
You mention waste water, but what is the waste? Particles, solvent, animal, vegetable? Are the pumps valving plugging up?
Why do you assume the short life of the pumps? There are NO specifications in the link you gave. What is the diaphragm made of? Time to do some forensic destruction.
Paul