NI Home > Community > NI Discussion Forums

Multifunction DAQ

Showing results for 
Search instead for 
Do you mean 
Reply
Member
saeed86
Posts: 2
0 Kudos

which NI DAQ i should use for Optical Sensing of Water level?

i am designing an optical water level sensor, i need to know is there any DAQ available which takes optical signal and converts it to electrical? or any DAQ which is suitable for optical level sensing?

 

i will be grateful for help

 

thanks

 

Saeed

Trusted Enthusiast
Henrik_Volkers
Posts: 2,290
0 Kudos

Re: which NI DAQ i should use for Optical Sensing of Water level?

[ Edited ]

Well, usually the DAQ cards work with electrical units (voltage, current) and time (frequency) , so you would need a sensor (transducer) to convert the water level to an electrical unit.

There are 1000 ways to converts a water level to an electrical signal, depending on environment, level distance and range, ... 

Sea levels are measured via radar from satellites ... dishwascher usually use pressure sensors ....

 

So please tell us more about you problem ...

Greetings from Germany
Henrik

LV since v3.1

“ground” is a convenient fantasy

'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'
Member
saeed86
Posts: 2
0 Kudos

Re: which NI DAQ i should use for Optical Sensing of Water level?

Thanks alot for helping, i am doing my project by using the optical fiber as sensor. i am going to to control the water pump by using the DAQ when the optical sensor gives an indication that tank is full. i need to know that which DAQ i can use for it and what technique use to convert it in electric?

 

Regards,

Saeed

Member
BB_Phil
Posts: 27
0 Kudos

Re: which NI DAQ i should use for Optical Sensing of Water level?

Hello Saeed, 

 

I think this is what you're looking for: 

http://sine.ni.com/nips/cds/view/p/lang/en/nid/209012

 

You can find more information about optical sensing here:

http://www.ni.com/opticalsensing/

 

Are you using an FBG sensor?  That is the type of optical sensor that PXIe-4844 works with.  If you have any questions, please let me know.