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Installing the Instrument Air and Test Gas Supply,
Exhaust Gas
Purge Gas (Probe)
20
Connect the exhaust gas line (using the shortest possible line with an I.D.
8 mm). Allow the exhaust air to pass freely and do not install reduction
sections or shutoff valves. Note: The diameter of the exhaust gas line should be
widened at the shortest possible distance behind the cabinet to prevent any
backpressure due to long line length.
Provide a separation for air and condensate after the exhaust. Due to the prin-
ciple of the gas transportation the sample gas is diluted after measurement with
the instrument air by a ratio of approx. 1: 5. In spite of this condensation occurs
when the water dew point of the mixture reaches the ambient temperature.
Do not connect the exhaust gas line with the drain line of the air conditioning
unit. Due to diffusion aggressive gases could damage the air conditioning unit.
Connect the purge gas line to the gas sampling probe. The purge gas line can
run along the same route as the sample gas line.
WARNING!
Some of the gases measured with the analyzer system are harmful to health.
Therefore, the sample gas must not escape from the gas path during normal
operation and maintenance works.
A seal integrity check of the analyzer system has to be performed at regular
intervals.
The diluted exhaust gas must be drained out of the installation room of the
analyzer cabinet.
Installation Instructions ACF-NT, ACF-NT V0309
continued
42/23-571 EN Rev. 5
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