Products > Test Equipment
Modern replacement for 2-channel recorder with high voltage input needed
Martin72:
Hi folks,
I have searched my fingers to the bone, maybe I searched with the wrong term (then you usually do not find anything clever), "last" hope are you.... ;)
The following situation:
For an ancient project, we used for decades a 2-channel paper recorder that recorded or wrote on paper roll for at least 8h the output voltage and ambient temperature.
This device is defective and there is no more paper for it.
Now we have the 21st century and are all paperless on the road, everything digital.
So there should also be a corresponding new replacement for it, or...
There is also, we ourselves have various recorders from hioki and yokogawa in the house.
But for the project 2 channels are enough, or 4, we do not want to use an expensive hioki with its 10/20 channels for it.
And now comes the special:
We need a measurement input which "tolerates" 115V/400Hz.
Our recorders have max 50V, the others I have found on the net, also have only max 50V in the input.
So the question is, is there a recorder that can handle a higher AC voltage and has a temperature input?
I would be very grateful for any advice. :)
tautech:
SDS1104X-E in Logging mode.
https://int.siglent.com/u_file/document/Data%20Logger%20of%20SDS%20Application%20Notes_EN01A.pdf
Martin72:
Very interesting ! :-+
But unfortunately no temperature...
Hmm...of course you could use a separate temperature logger and include the csv files later together in a table...
OK, that would be a possibility, if there is really no recorder with high input voltage.
Kim Christensen:
You could connect a temperature sensor, that outputs a DC voltage, to the second channel on the SDS1104X-E. Depends on how accurate this needs to be.
CatalinaWOW:
Any reason you can't just put a resistive divider on the in high voltage signals to bring them into the operating range of standard commercial data loggers? Also, if you were actually recording the raw 400 Hz waveform in any kind of viewable format you must have been going through kilometers of paper. Roughly forty centimeters/second would be about the slowest you could run it. I remember filling lab floors many centimeters deep doing this kind of stuff at somewhat higher bandwidths fifty years ago.
If you are more interested in voltage droops and other similar phenomena that vary with similar bandwidth to the temperature signal you could rectify and filter the signal with appropriate scaling to match any number of commercial recorders (data loggers). Or for a cheap alternative an Arduino or similar would do the job.
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