Ratio iX3M2 transmitter on HP cylinders

[stiebs]

I've recently hooked my Ratio iX3M2 transmitter onto my twin 7L (300bar) tanks, and have noticed that the pressure reading shows a maximum of 254bar. It'll read 254 bar until the pressure drops below that, and then it decreases in line with my SPG.

I've submitted a support ticket, but got a response back saying they're closed over Christmas, so will be a few days before I expect to hear back.

Does anyone else have any experience with readings above 254bar (3683 PSI) with a Ratio transmitter.

I do find it a strange coincidence that 254 is only 1 less than the maximum 8-bit unsigned integer. I can only assume that the pressure is read into an 8-bit integer in bar, and then for PSI is converted into a 16-bit int for display. Seems odd though.

( .. and if that indeed is the case, surely flame bait for the Shearwater pundits .. )

 

[tridacna]

I've recently hooked my Ratio iX3M2 transmitter onto my twin 7L (300bar) tanks, and have noticed that the pressure reading shows a maximum of 254bar. It'll read 254 bar until the pressure drops below that, and then it decreases in line with my SPG.

I've submitted a support ticket, but got a response back saying they're closed over Christmas, so will be a few days before I expect to hear back.

Does anyone else have any experience with readings above 254bar (3683 PSI) with a Ratio transmitter.

I do find it a strange coincidence that 254 is only 1 less than the maximum 8-bit unsigned integer. I can only assume that the pressure is read into an 8-bit integer in bar, and then for PSI is converted into a 16-bit int for display. Seems odd though.

( .. and if that indeed is the case, surely flame bait for the Shearwater pundits .. )

What happens if you change to non-metric PSI?

 

[stiebs]

What happens if you change to non-metric PSI?

I haven't dived with it on PSI, but be chbtest dhoes it reads 3683 which converts 254 bar after rounding down