Hello,
I am searching for someone to build a device that dispenses seven doses of 1.4 milliliters of fluid with initial doses occurring at an average interval of 0.6 seconds with an increasing increment of 0.1 seconds per dose. Device should initiate wirelessly. I'd also would like the capability to adjust dose quantity, volume, and interval if possible.
Can this be achieved with a syringe pump or is there a better way?
Thanks!
most likly this this is way better than syringe: 
- but it depends on your fluid etc. What's the budget and what do you want to be built? And what do you have?
It can easily be done with the right syringe pump. I've built machines that had to do precision dispenses of below 10uL with ceramic piston syringe pumps. At those volumes, second order effects like the fluid viscosity and compressibility of air in the line starts to have a major impact.
Do you have a specific pump you plan to use or is selecting that part of the project?
zwieblum:
most likly this this is way better than syringe:
Thanks for your response.
Would a hose pump be capable of dispensing this quickly? Would it have any pressure behind it? I did not mention that the fluid should squirt out.
I'd like to keep the cost below $1k. I'd like the complete unit to be built. I currently have nothing but the idea.
cedarlakeinstruments:
It can easily be done with the right syringe pump. I've built machines that had to do precision dispenses of below 10uL with ceramic piston syringe pumps. At those volumes, second order effects like the fluid viscosity and compressibility of air in the line starts to have a major impact.Do you have a specific pump you plan to use or is selecting that part of the project?
Thanks for your response.
Selecting the pump is part of the project.
Depends how you build and use it. e.g. let's use a hose inner diameter of 1cm and a nozle the exit of 1.5mm and a big stepper ... yes, it will squirt. the driving rotor can be built in a way that it transports a defined volume at defined intervals - that works even without uC in pure mechanical way. You could also use the pump to build a constant pressure inside a container and relese the fluif through a nozle. The question is, what are your process parameters? Do you need the fluid to exit immediatly on signal or you dou have some time to build up pressure? etc. etc ...
zwieblum:
Depends how you build and use it. e.g. let's use a hose inner diameter of 1cm and a nozle the exit of 1.5mm and a big stepper ... yes, it will squirt. the driving rotor can be built in a way that it transports a defined volume at defined intervals - that works even without uC in pure mechanical way. You could also use the pump to build a constant pressure inside a container and relese the fluif through a nozle. The question is, what are your process parameters? Do you need the fluid to exit immediatly on signal or you dou have some time to build up pressure? etc. etc ...
Once set up, I would want the fluid to exit immediately on signal and be able to administer all seven doses in rapid succession.
continouse operation or limited to e.g. 1 liter fluid?
zwieblum:
continouse operation or limited to e.g. 1 liter fluid?
Limited.
Which volume?
zwieblum:
Which volume?
Well, each time it is initiated, it would dispense a total of about 10 ml. Originally, I was thinking just that 10 ml, but I suppose it might be handy if it could be initiated a few times without refill. How specific a number is needed to be able to make further determinations? 1 liter would certainly be much more than enough.
Question is, how would you like to refill the tank? What fluid? How far should it squit, or with what pressure? How long can the fluid stay in the system without cleaning?
zwieblum:
Question is, how would you like to refill the tank? What fluid? How far should it squit, or with what pressure? How long can the fluid stay in the system without cleaning?
What options are you imagining for refill?
Fluid is a water-based silicone lubricant.
Seven inches.
I think it can stay in the system without issue.