Bar30 pressure sensor wrong but repeatable readings

[EliotBR (Eliot)]

@Tronic

I don’t recall seeing that mention in the datasheet

Just had a look and this is actually mentioned on the third page of both the Bar30 and Bar02 datasheets, as

@MS5837-xxBA datasheet

(4) Wet/dry cycle: sensor must be dried typically once a day

@Tronic

Looks like the design needs to be altered so that it can dry when not in use, or do you suppose that some sort of coating could be applied to the sensor itself to make it better protected against water?

I brought this up last week and was told

@BrianBR

If it fits [your] requirements the Bar100 can be wet indefinitely, but obviously there’s a significant price difference.

From what I can tell, the issue with the MS5837 is the gel coating built in to the sensor. I’m not sure there’s much we can do to keep it dry that won’t affect the measurement.

Rusty also added that

@rjehangir

not much we can do at the moment, but we do want to investigate ways to make the MS5837 more resilient. We’d have to put some fluid between the sensor and the water that doesn’t degrade it, like oil or grease perhaps.

so it is at least being looked into - just not top priority at this stage while we’re sorting out other things like the continued expansion of the newly announced wetlink family of products