Hi All,
I am having a difficult time getting the MPRLS modules to hold a constant vacuum reading. I am using 3/32 tubing to the metal port. I also have the suggested 3/32 tubing inside the 1/4 tubing. Additionally I have tried 1/16 for an extra tight fit. All of which wont hold a constant reading, showing a slow leak.
Is the MPRLS just not intended to be used a vacuum gauge for an extended period of time?
I have 6 MPRLS, all seem to showing the same issue. Any suggestions?
Thanks
MPRLS leak, wont hold a constant vacuum
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Please be positive and constructive with your questions and comments.
- Franklin97355
- Posts: 23910
- Joined: Mon Apr 21, 2008 2:33 pm
Re: MPRLS leak, wont hold a constant vacuum
Have you tried to seal the sensor around the edges and on the back?
- RowBotz
- Posts: 2
- Joined: Mon Oct 03, 2022 12:41 pm
Re: MPRLS leak, wont hold a constant vacuum
I have not tired that yet, but I will give it a go.
The only hole on the back side of the board is the port hole for the sensor. I assume I should leave that open?
Thanks
The only hole on the back side of the board is the port hole for the sensor. I assume I should leave that open?
Thanks
- adafruit_support_carter
- Posts: 29153
- Joined: Tue Nov 29, 2016 2:45 pm
Re: MPRLS leak, wont hold a constant vacuum
The MPRLS's are rated down to 0 pressure, so nominally should be able to read vacuum.
The suggestion to seal around the base of the metal housing that comprises the tube port is a good idea. That's a potential weak spot.
Also - could it be somewhere in your tubulation? Have you investigated other possible sources of leaks?
The suggestion to seal around the base of the metal housing that comprises the tube port is a good idea. That's a potential weak spot.
Also - could it be somewhere in your tubulation? Have you investigated other possible sources of leaks?
Please be positive and constructive with your questions and comments.