LOOK AT THE CODES that vary things Like VOTAGE DE (6Volt), DH(12 Volt), which in turn changes the Speed. of the Pump
My question:
So there are codes on the pumps:
DE= 6volts
DH= 12 volts
so, in other words, the higher the voltage the faster the motor spins.
so, a 12volt would spin faster than a 6 volt?
Not really, voltage is just for whatever Power Supply you have.
They adjust the gears to make the pump run at a normal speed (Motor vs Head spin)
What determines the "FLOW RATE" is not speed, but the IOD (inside diameter) of the tube. The more wide the tube hole, the more liquid is squished between the rollers so the pump, PUMPS MORE.
Look at the table from the WEB SITE to determine What flow rate you want.
(That will determine best choice for YOU!!!) Not voltage, not material, but FLOW RATE.
(Notice the 6 Volt Pump actually has higher Flow, due to the Gear Ratio. Motor may spin more, but SHAFT turn is more important, and of Course the TUBE).
And I would stay away from 3Volt pumps. .It won't be easy to find a 3V DC adapter.
But if you really want 3Volt, you can get a 6, 12, or any Volt 3-35volt and bring it down to 3V volt with a BUCK CONVERTER. But that's more messy wiring.
MORE FLOW ISN't Alway better, since too fast, and you have to run the Pump less than a minute (so a typical by minute timer will always DOSE 1 minute, 2min, 3min, etc etc....)
All it means is if you want to dose 10ml of water. A pump with 45 ml/min will dose 45ml (if you have a 1 minute timer). To dose 10 ml (45ml/10ml is the ratio) so you would have to turn on/off the pump (60sec/ [45/10]= 13 seconds, which you CAN NOT DO if your timer can only do 1 minute intervals)
Now if you pick a 11 ml/min (S04) Speed pump. 1 Minute timer would get you 11ml, which is much closer to 10 ml. Get it?
Of course my DIY doser can turn (ON and OFF) a plain old DC pump in 0.001 seconds, so I can dose 1 drop with any pump. (kind of like a stepper motor pump)
your response:
LOOK IN THE DETAILS of the web Site.
S04, S06, S10.....
my question:
These numbers correlate to the ID and OD of the dosing pump tubes?
the S10 “model” is the one that would work for larger food particles.
YES, that's the trade off with a wider tube (bigger particles fit thru the tube). You get a wider tube, but with the S10, and a 1 minute timer, you will have to dose, 80, 90, or 83ml each minute, unless you can get a timer that will stop in seconds. Or you will just have to use a larger container to handle more water.
Your response:
You also have a choice of two materials.
Silicone, or BPT. Both will work for Marine, and Food. BPT is onmly for things like High Heat, or acids.
My question:
I always thought that silicone was the way to go because of its flexibility. However, I feel like that it does not degrade over time compared to acrylic. (referencing) airline tubes for air compressors ( fish tanks) so, I would lean towards Silicone due to the stepper motors constantly pushing the hose.
From your example above, I see both 6 and 12 volt motors. However, what I’m curious about is what is the difference between the L and straight type pumps. Are these referring to the outlet nozzles?
L would be like a 90 degree and the straight would be well.. straight up and down like what is pictured below?
however, while scrolling through the site, I do not see any place that allows you to select which pump size you want.
Don't worry about the tubing. Just get the cheapest you can find that is SAFE material.
I'm talking the tubing that you connect to pump, to run to your tank.
The tubing in the Dosing Pump must be silicone or BPT since the rollers really squish the tubing hundreds and thousands of time to pump. (And since silcone is cheaper go for silicone....Just for the dosing tubing, INSIDE the Peristaltic Pump)
Thought:
so, what your saying is IF I go and by and off the shelf model doser, I can “hot swap” the motors for larger ones if needed. How would I know I'm exceeding the allotted wattage for the unit without it going BOOM or disappearing in a cloud of black electrical smoke?
Below, are the specs for the Kamoer F4 pro. No where in these specs do they list the pump size or speed of the pump.
Ensure Precise and Consistent Dosing - The new Kamoer F4 PRO WiFi Doser Liquid Dosing Pump is the latest state of the art controllable dosing system from Kamoer. Features WIFI Control of dosing Pump via iOS or Android devices Software update via WIFI Included battery back up - Settings saved...
www.marinedepot.com
THe F4 Pro is ovekill. But if you have the money. Actually even if you have the money it looks big for a cooler.
It doesn't say speed, but it does say minimal Volume which is all you care about.
- Minimum Dosing Volume 0.1ml
But for a feeder I would just get something like this.
or better yet a Jebao.
They do 1ml dosing so it would work. Plus tube look fine and you could get wider IOD tubing and replace them (if what comes with them is too narrow). Those Caps come off the heads, and you the replace tubes, and snap cap back in. That's typical with Peristaltic pumps, sincec the motors will hopefully last longer then the Tubes lifetime.
BUT THERE IS SOMETHING THAT IS IMPORTANT for Dosing Pumps (off the shelf).
How can you program them to make it work for a Fish Feeder. I've never bought a doser, so I don't know what the limitations are in programming.
It wouldn't work if you have to dose 12 times a day, and same amount for 24 hours (ie feed at night when fish are sleep).
A trick to handle overnight feeding is to put the doser on a timer, so you power it off overnight. But then what happens when it powers up. I don't know since I've never owned any of the comercial dosers.
(Just Kidding but its a Power Pump, made for irrigation)
