NI module for control pump

[MYLONG]

I have a pump which accept 0-10V analog to change RPM. with BNC connector, when Volt is higher than 445mv, pump will start. 

I look for a Analog output module from NI. Could you give me some advice? Which module is good to control pump flow rate and on/off?

cheaper one is prefered

Thanks

[Wee-Bey]

So it depends on a few things.

What kind of output rates do you need? How do you want to house your module? We have PCI cards that slip into the computer, and USB devices that sit outside the computer. The USB devices typically have slower frequencies.

Here is a search that I did on ni.com for DAQ products with at least one analog output port. 

http://sine.ni.com/np/app/main/p/bot/no/ap/daq/lang/en/pg/1/sn/n17:daq,n36:19,n3:7691/ 

It seems one of your cheapest options might be the USB-6211, whose analog output has a range of +/- 10V. 

https://www.ni.com/en-us/shop/model/usb-6211.html

And just for future reference, though this is in some sense motion control, since you're intending to use a simple analog output device to communicate with your device, we typically post those questions on the data acquisition boards, since you're more likely to have helpful eyes see the issue. That being said, hopefully the above links help. Let us know if there are any more specific parameters you have for your communication. Thanks!