1-wire pressure sensor (TAI8570) offset required

Just wondering if anyone else found that they need to set an offset value for the TAI8570 preasure sensor to get the measurments to look reasonable. I had to add a .6 inch offset :!:

hummm
i though they were factor calibrated,and they have internal calibration, that WD reads and uses, which is based on the sea level pressure reading at the factory setting set…
i should have time soon to get the routine imprived in wd…