USB-6210 RESISTANCE MEASUREMENT

[PARULP]

I Want to measure the resistance of a sensor using USB-6210  ,but i am not getting the accurate result  Can you please help  me about the circuit as  i need to connect 5v as input and ground to the circuit , can i get the output of circuit by connecting it to the analog input pin ai9 

thanks

[Minions]

Parulp,

Think about this, you are using a piece of equipment that captures voltage using the analog inputs.  If you place 5V and ground  across the sensor, what would you expect to read? (5V of course)

How is resistance calculated? (V/I) 

We already know how to measure V across the sensor inputs.  The question is how to find the current?  You will need to place a Current Sense Resistor (0.1 ohm) in series with the sensor and read the voltage drop across that resistor.  Reading the Voltage across a known resistance will give you I which can then be used to calculate the sensor resistance.  BE CAREFUL. Not many sensors are purely resistive in nature.