Topcon GPT-7005i User Manual

93
7 SETTING ATMOSPHERIC CORRECTION
Atmospheric Correction Chart (For your reference)
The atmospheric correction value is obtained easily with the atmospheric correction chart. Find the
measured temperature in horizontal, and pressure in vertical on the chart.
Read the value from the diagonal line, which represents the required atmospheric correction value.
Example:
The measured temperature is +26°C
The measured pressure is 1013 hPa
There fore,
The correction value is +10ppm

Topcon GPT-7005i Specifications

General

Brand	Topcon
Model	GPT-7005i
Category	Measuring Instruments
Language	English