20
P: Air Pressure
（
Unit : hPa If the unit is mmHg , please convert using
1hPa = 0.75mmHg 1mmHg = 1.333hPa
T: temperature
（
unit
‵）
Direct Setting Method of Atmosphere Correction Value
After measuring the temperature and air pressure, the atmosphere correction value can
be obtained from an atmospheric correction chart or correction formula (PPM).
Operation Procedure
Operation
Display
①
Press star key into quick setting, then
press 3
3
②
Press [
▲
] or [
▼
] to PPM
[
]or[
]
③
Input data and press [OK]
Input data
*1
）
Refer to 2.10“How to Enter Alphanumeric Characters”
Input range
：
-99. 9PPM to +99. 9 Interval: 0 .1PPM
*2
）
If Temperature and Air Pressure are reset, the PPM will be recalculated automatically.
