Basic HTML Version
Methanizer accessory - SRI Instruments
Methanizer (for low level CO and CO
2
by FID)
85
|
|
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●
Converts CO and CO
2
to methane without changing retention times
●
Enables the FID detector to detect low levels of CO and CO
2
●
Three possible configurations for your application needs
●
Thermostatted to 380
°
C
The Methanizer option enables the
to detect low levels of CO and CO
2
. It is
installed as the removable jet in a special FID
detector assembly. The Methanizer is packed with a
nickel catalyst powder. During analysis, the
Methanizer is heated to 380
o
C with the FID detector
body. When the column effluent mixes with the FID
hydrogen supply and passes through the
Methanizer, CO and CO
2
are converted to methane.
Since the conversion of CO and CO
2
to methane
occurs after the sample compounds have passed
through the column, their retention times are
unchanged. Hydrocarbons pass through the
Methanizer unaffected.
The special Methanizer FID detector assembly operates like the regular SRI
, except that the FID
temperature must be set to 380
°
C. Due to the chemical relationship between nickel and sulfur, the Methanizer can
be poisoned by large quantities of sulfur gas.
The Methanizer accessory is available in three configurations:
1. Built into the FID detector.
2. Built into the valve oven ducts on the side of an 8610 GC (a valve oven must also be ordered; see
price list below).
3. As a stand alone unit for use with any FID detector.
http://www.srigc.com/2005catalog/cat85.htm (1 of 2) [20/02/2012 4:18:41 PM]