What the Gas-Tec shows
Gas-Tec
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VI What the Gas-Tec shows
6.1 Overview
Gas-Tec makes it easy to pinpoint gas leakages so that they can be dealt with quickly . The data can be
checked while recording is taking place, or loaded down later .
To find information about the location of the Gas-Tec at a particular time, and other basic aspects of the
system, use the ‘Info’ soft key at any time during operation . A choice of screens is provided: ‘System’ and
‘GPS’ .
A record of the concentration of hydrocarbon gases encountered by the probe as it is carried by the opera-
tor is stored in date-stamped files in an internal memory . Data is registered every second and is recorded
against the time the record is logged . The built-in GPS, (if locked), allows the position to be logged at the
same time .
To upload the data, plug the detector's USB connector into a PC (the green led will light on the Gas-Tec
when connected) . Gas-Tec will be recognised as a memory device, and a folder will open displaying log
files in date order .
The files can be manipulated or sent via e-mail to interested parties .
The data collected by Gas-Tec includes:
Column A
Count
An incremental number
Column B
Time
Gas-Tec time
Column C
Absolute
Absolute PPM reading (before autozero setting is deducted)
Column D
Relative
Relative PPM reading (after autozero is deducted)
Column E
Latitude
Latitude of current GPS Position
Column F
Longitude
Longitude of current GPS Position
Column G
Height
GPS height above sea level
Column H
SOG
GPS Speed Over the Ground
Column I
COG
GPS Course Over the Ground (angle measured clockwise
from magnetic north)
Column J
Mark
If the Mark button was pressed during readings
In addition, each report includes the serial number of the Gas-Tec used for the survey .