looking for DAQ that measures PPM tia sal22

[ratullloch_delthis]

Greetings all

I'm looking for a DAQ that will measure PPM (particles per million) over time, can anyone recomend one?

tial sal22

 

[Bob Masta]

Greetings all

I'm looking for a DAQ that will measure PPM (particles per million) over time, can anyone recomend one?

tial sal22

Could you elaborate on exactly what you want to do?

Best regards,


Bob Masta

DAQARTA v5.10
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Scope, Spectrum, Spectrogram, Sound Level Meter
Frequency Counter, FREE Signal Generator
Pitch Track, Pitch-to-MIDI
DaqMusic - FREE MUSIC, Forever!
(Some assembly required)
Science (and fun!) with your sound card!

 

[Martin Brown]

Not really clear here what you are asking for.
DACs output voltages, and ADCs measure them.

Old Solatron 7060 voltmeter secondhand, provided you don't want absolute
calibration will just about do it on the 10v range (as will some of the
later models but they are usually more expensive).

It is actually rather hard to get ppm low noise ADCs to behave reliably
at 6 sig figs and you need reference gear to qualify and calibrate it.

Regards,
Martin Brown