Gas-Tec Introduction; Product Description; Flame Ionisation Detection (Fid); Hydrogen Safety - Crowcon Gas-Tec Manual Del Usuario

Gas-Tec Introduction

II. Gas-Tec Introduction

2.1 Product description

Gas-Tec is a portable gas detector for rapid survey and leak localisation . GPS, data and event logging
allow survey teams to pinpoint and report on areas of significant interest .
Gas-Tec senses hydrocarbons through the use of flame ionisation detection offering an extremely fast
detection speed of less than 2 seconds .
Gas-Tec is worn across the body and is supplied with a standard probe . A wide range of other probes and
accessories are available (see Sections VIII and XI) .

2.2 Flame Ionisation Detection (FID)

Flame Ionization Detection (FID) is the fastest, most sensitive and accurate way to detect concentrations of
hydrocarbons such as methane, butane or hexane . The FID process uses a hydrogen flame to burn hydro-
carbons in an air sample then counts the ions produced by the burnt sample . The instrument then displays
an accurate measurement of the concentration of hydrocarbons present in the sample . All samples are
destroyed as the measurements are generated . This process takes place in a specially designed chamber .

2.3 Hydrogen Safety

Users of the Gas-Tec will need to handle the hydrogen cylinder correctly . A leak from a full cylinder could
result in a build-up of gas that could, in extreme cases, cause an explosion .
Install the cylinder carefully (Section III .1, page 10)
Check the cylinder is secured in place before opening the valve . Tighten the
cylinder as tightly as possible by hand . Never use a wrench, hammer, or
other tool to open or close the hand wheel.
The Gas-Tec LCD display will prompt users through the startup and shut-
down procedures ensuring safe use . Gas-Tec will display relevant messages:
• Will let the operator know if the gas pressure is too low .
• Will prompt the operator to open the valve to allow gas to flow
• Will prompt the operator to close the valve during shut-down
• Will let the operator know it is safe to power down the Gas-Tec
If the gas pressure is too high
• Will let the operator know if the gas pressure is too high;
• Will prompt the operator to close the valve to allow gas pressure to decrease and disconnect the gas
cylinder .
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Gas-Tec