DC Voltage Measurement using C-Series

[Midlothian]

Hello,

What is the recommended compact DAQ for measuring DC signals up to +/- 10V ?

I have two NI 9233 modules that fit into NI USB 9162 carriers, however these have hard-wired AC coupling.

There are thermocouple modules like the 9211A but they can only handle +/- 80mV.

Thanks.

[Tom.]

Hi,

The best way to evaluate which cDAQ module is best for your needs would be to use our online advisor which can be found here.

Follow the steps of the advisor to view different module specifications to establish which module can perform the measurements you require at the best price.

Good Luck,

Tom
NIUK

[Midlothian]

Thanks, I had looked in here. 

It looks as if the 9205 is suitable but I can't see confirmation of DC coupling. 

Could you please confirm for me?

[Tom.]

Hello,

If you look at the manual for the NI-9205 here, and navigate to page 19 you will see that the input coupling is listed as DC:

Analog Input Characteristics

ADC resolution................................. 16 bits

DNL..................................................No missing codes guaranteed

INL....................................................Refer to the

AI Absolute Accuracy Tables and Formulas Section

Conversion time

       R Series Expansion Chassis ....... 5.2

μs or 192.3 kS/s

       All other chassis .........................4

μs or 250 kS/s

Input coupling...................................DC

Nominal input ranges........................±10 V, ±5 V, ±1 V, ±0.2 V"

Hope this helps!

Tom
NIUK

[Midlothian]

Many thanks.

It's all there if you know where to look. 😄