queries related to daq

[PARULP]

I am using TGS825 sensor with DAQ USB-6210 and as i connect this sensor circuit to the  daq hardware the vc pin is showing only 1.6 v  instead of 5v and when i check the voltage on vc pin of daq without circuit it is showing 5v and  i m not able to analyze the problem with this unaccepted drop .i am using Rl of 1k

[Alexander_Sobolev]

Change of the 5V pin to 1.6V means you are overloading it.

Is it this sensor?

https://www.soselectronic.com/a_info/resource/c/figaro/tgs825.pdf

Are you using external power supply for heater, or 5V from USB-6210? If you are using external PS and it 5V from usb-6210 is still dropping, something is wrong with connection or sensor. Check resistance with multimeter.

[PARULP]

I am providing 5v to heater  from usb6210 ,and as u said i checked the circuit and sensor it is ok  .FOR TGS 825 I AM PROVIDING 5V FOR VC AS WELL AS FOR VH.Also when i am connecting this circuit to the arduino   5v     it is not introducing any problem like in case of daq .

[Alexander_Sobolev]

5V from board is limited at 50 mA, it is too low to power the heater. It is not directly from USB as on Arduino, but limited on the board.

[PARULP]

THANKS 

[PARULP]

so it means we have to provide heater voltage externally or is there any method by which we can provide 5v to heater pin through daq.