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Emerson Process Management GmbH & Co. OHG 4-9
4
Maintenance
X-STREAM XEFD
Instruction Manual
HASXEDE-IM-EX
03/2012
4.3 Vapor Recovery Application - Special Information
• Ensure „Pump 1“ within the control menu
is set to ON.
Note!
„Pump 1“ is used to disable (Off) or
enable (On) the gas ow through
the converter!
• Apply the calibration gas for CH2 (e. g.
C
6
H
14
). As CH1 and CH2 inside the ana-
lyzer are piped in parallel, this gas now
goes through the converter.
• When stabilized, write down the measure-
ment reading of CH1 (CH
4
channel with
converter)
• Now change „Pump1“ to Off, to let the gas
bypass the converter.
• When stabilized, write down the measure-
ment reading of CH1 (CH
4
channel with-
out converter)
• Calculate the converter efciency:
• If the result is below 0.9 (90 %), the con-
verter material should be replaced as
described in the next section.
Part number for converter replacement ma-
terial: ETC02579
Notes!
While „Pump 1“ is set to Off, the NAMUR
status Function Check is actvated.
Don‘t forget to set „Pump 1“ to On again, af-
ter nishing the calculation of converter ef-
cieny!
Note!
The analyzer is congured to measure CH
4
at channel 1 (CH1), with the converter in-
stalled in front of its measurement cell.
The total content of hydorcarbons (C
n
H
m
)
within the sample gas is measured at chan-
nel 2 (CH2).
Zero Calibration..
Span Calibration..
Advanced Calibration..
Apply Gas..
Lock Menus!
Acknowledgements
Pump 1: On
Pump 2: Off
Ranges..
4.3.1 Determining the converter efciency