STONEX R2 PLUS User Manual

131
Appendix I: Atmospheric correction formula and
chart (Just for reference)
Factory setting: temperature: 20℃, pressure:1013hPa, 0ppm
The correction:
Kpt＝278.960-0.2902*p/(1＋0.0036*t)
Where: p--Pressure value (hPa)
t--Temperature value (℃)
Kpt--Atmospheric correction (ppm)
Example:
t=20℃, p=1013hpa, L0=1000m.
Then: Kpt=4ppm
L=L0(1+Kpt)=1000×(1+4×10-6)=1000.004m
The atmospheric value is obtained easily with the atmospheric correction chart. Find
the measured temperature in horizontal axis, and pressure in vertical axis on the chart.
Read the value from the diagonal line, which is the required atmospheric correction
value.

STONEX R2 PLUS Specifications

General

Brand	STONEX
Model	R2 PLUS
Category	Measuring Instruments
Language	English