Hach Ultra ORBISPHERE 3625, Руководство оператора

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18 of 90 Installation - 3625 Package Analyzer
Operator Manual
ORBISPHERE
2.3.2 Purge and Forcing Gas Supply
The thermal conductivity sensor must have a supply of purge gas running before
operating the system. Purge and forcing gas are the same gas. Connect the main inlet
port of the piercer to the supply line.
CAUTION:
This sensor, when exposed to a liquid sample, will be damaged if purge gas is not
flowing.
• CO
2
sensor requires N
2
as purge gas
• N
2
sensor requires CO
2
as purge gas
• Purge and forcing gas cylinder pressure setting:
1 bar > package pressure < 5.5 bar
• Set the purge gas regulator at 2 bar gauge (60 psig)
with the pressure regulator on the piercer
Purge gas outlet on thermal conductivity sensor:
• Connect about 25 cm (10") of 1/8" diameter nylon tube.
• Push the tube firmly into the purge gas outlet
• Put the other end into a cup of water for testing
Select
Continuous Purge
in the
Options
menu
• Put the purge gas outlet tube in water.
• Control the purge gas sequence by looking at the
bubbles generated.
CAUTION:
Do not leave tube in water, as moisture may be sucked in
sensor’s cell, thus damaging it.