[WebDAQ 504 DC Coupled Time Constant]

Thanks for answering.  That answers my question. 

Follow up question: Is there a way to enable DC coupling for an IEPE sensor?  I hope to use this sensor during calibration in a quasi-static environment, but I noticed in the documentation / help page > job editor > channels > channel properties: "Note: AC coupling is automatically enabled for IEPE channels."  Is there a way to disable this default and enable DC coupling instead?  If not, I may have to use the voltage mode and provide my own excitation, but I was hoping not to have to do this.  

Josh B

[WebDAQ 504 DC Coupled Time Constant]

I am using a Dytran 1053V3 (datasheet attached).  This has a rated time constant of 100 sec.  I have seen some power supplies listed as AC or DC coupled.  From Dytran's literature (attached): "A DC coupled power unit uses a summing op-amp circuit rather than a capacitor to direct couple the sensor to the readout."   

The WebDAQ datasheet lists AC/DC coupling as options, but I am wondering what the limiting discharge time constant would be.  

1053V3_ds.pdf 20170501044839Low_Frequency_Response_and_Quasi_Static_Behvaior_of_LIVM_Sen.pdf

[WebDAQ 504 DC Coupled Time Constant]

Good Morning, 

I am using the WebDAQ 504 to log data from an IEPE force sensor.  This sensor has a discharge RC time constant of 100 seconds.  I am concerned with the time constant because I will be collecting some quasi static calibration data and would like a few seconds to be able to do so.  Some power supplies will decrease that time constant.  I didn't see a coupled time constant listed in the data sheet for this logger when DC coupled.  

What is the discharge time constant of the WebDAQ 504 when DC coupled?  

Thank you, 

Josh B

[Do I need a WiFi adapter to use the WebDAQ 504?]

Thank you, Fausto!  That answers my question.  

[Do I need a WiFi adapter to use the WebDAQ 504?]

Hi there, 

 

We recently purchased a WebDAQ 504 Vibration Data logger and are in the process of figuring out what cabling / other instrumentation we will need for our test setup.  In the manual I see, "After the WebDAQ is detected on a wired network, users can connect an approved WiFi adapter to the rear panel and communicate with the WebDAQ over a wireless network.  Refer to our website for a list of the WiFi adaptors apoproved for use with WebDAQ Series hardware."  

 

Does this mean that I need to purchase a WiFi adaptor to use the WebDAQ unit at all, or only if I desire a wireless connection?  I want to make sure that I can actually get my unit to function - if I need to purchase an adapter that will take some time.  

 

Thanks for your help, 

 

Josh Burns