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8. Version for Hg determination in natural gas and other hydrocarbon gases (Tedlar®

Bag Version)

page 83

Mercury Instruments

UT-3000-E_V2.11.docx

31.07.12

Analytical Technologies

IGURE

AMPLING

ONTINUOUS SAMPLING OF NATURAL GAS

ENCHAMAS

FFSHORE

LATFORM

;

HAILAND

)

8.2 Setup for continuous measurement of Hg in natural gas

For automatic 24 hours per day monitoring an optional setup for continuous measurement is

available. The analyser system is installed in a safe place out of the hazardous zone. The sample

is extracted from the gas pipeline with a heated sampling system (described under 8.1. The

sample is then guided to the analyser through a stainless steel/Teflon (PFA) capillary. The

analyser is purged with air to avoid formation of an explosive atmosphere in case of leakage. In

addition a built in gas sensor shuts the system down and stops the sample gas flow by closing a

valve which is installed in the sample line.

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UNI-T UT3000 series Istruzioni per gli Interventi Pagina 83