Electrical Question.

[Gav935]

Having bought myself a peristaltic pump to use for dosing ferts, I need to get a power supply for it, I know that the pump is 12v but am unsure what current rating of 12v adapter I need, is anyone clued up on electrical theory out there? Oh and pump specs here Clicky click

 

[mixmaster jay]

the pump is 12v/24v d.c (direct current) and your home electrical supply is 240v a.c (alternating current). this should already have a power supply pack with some sort of transformer with it that will covert the 240v a.c to 12v/24v d.c you are best off ringing the place that sells or supplies them to be honest mate because if you get the wrong type of tranformer for it it could render it useless and then its a waste of money ive copied and pasted the numbers and adress for you to get in touch with them mate sorry i could not be of much help



AUTOCLUDE LTD
Arisdale Avenue, South Ockendon, Essex, RM15 5DP, U.K.
Tel: +44(0)1708 856125 Fax: +44(0)1708 857366
Email: ‘info@autocludepumps.com’
Website: ‘www.autocludepumps.com’

 

[Gav935]

I'm aware of all this, i suspect it was used with some sort of microcontroller due to the plug attached to it, I'll email them and ask what the recommended operating current is, it's just so I don't end up buying a transformer that is either too powerful or not powerful enough. I'll probably run a fuse inline with it anyway to prevent it from going pop.

 

[Rooster]

You CANNOT have "too much current" the device will only draw what it needs.... I would measure the current myself, but if you dont have a meter, then I would guess at well under one Amp... a 500mA PSU should do the job.

 

[Gav935]

Cheers for that Rooster, that's what I was hoping/assuming, just wasn't sure. Argos sell one rated for 1200mA, will get my brother to help me out, he's got a van full of electrical kit.

 

[keenonfish]

I have an old peristaltic pump knocking round from my catering days. I will have a look tomorrow and if possible hook it up to a PSU and measure the current flow - It will give you an idea at least!

I think you will have to select a 24v supply and the use a separate controller (motor speed & timing) to get required dosing. Have you given this any thought yet?

 

[Gav935]

There's a speed controller built onto it in the form of a variable resistor, I'm not sure whether its working or not as it feels a bit slack, will test it at the weekend. Timer control will be via an digital timer switch, i.e on for 1 minute at a time minimum, I'll be able to vary the concentration of the fert solution in order to dose the correct amount regardless of whether the speed is variable or not.

 

[Gav935]

Got it all connected up and the connections crimped, works exactly as I hoped too, well chuffed!