USB-6001 output voltage does not go above 0.8V

[RavensFan]

Sure.  Why not.

But I'm afraid I don't have any experience with your specific device to be able to help you further.  If you are still stuck, you might want to call the manufacturer of the pressure regulator.

[AnalogKid2DigitalMan]

---

@Sorosham wrote:

There is no setting on the device. What if I use a differential amplifier?

Best,

---

See pg 8 of the software manual, there are settings:

https://www.enfieldtech.com/site/Product-Documentation/TR-Electronic-Pressure-Regulator-Users-Manual...

-AK2DM

[aputman]

Don't you still need to ground the analog input to the power supply ground?  I don't think the AI and AO grounds are connected internally.  Picture below is for a single ended measurement.  

Edit:  RavensFan already suggested this.  Oops. 

[aputman]

The pressure regulator sheet says that the command input is configurable for 0-10VDC or 4-20mA.  I'm not sure what you have this set for now but it looks like this is done via serial port.  Are you sure this device can be operated separately from the software?  Try contacting Enfield and see if they already have a LabVIEW driver developed. 

[JÞB]

---

@aputman wrote:

The pressure regulator sheet says that the command input is configurable for 0-10VDC or 4-20mA.  I'm not sure what you have this set for now but it looks like this is done via serial port.  Are you sure this device can be operated separately from the software?  Try contacting Enfield and see if they already have a LabVIEW driver developed. 

---

In fact,

5mA into a 210ohm load would cause exactly this problem-  I  bet the thing is set for 4-20mA

[Sorosham]

Hi, I contacted them, but no solution yet.

should it be like a selector between current and voltage type of input? 

What’s the solution then? 

Best,

[RavensFan]

Look at page 8 of the manual again.  There is a radio button selector.

[aputman]

I'm assuming that it is a command that is sent to the device thru the USB cable (serial port).  As AK2DM says above, check page 8.  Can you send this command to the device thru the software and then disconnect USB cable?  What happens?