Introduction; Application - M&C CG Series Instruction Manual

6

INTRODUCTION

In combustion processes, such as, for example, in large furnaces in which the nitrogen dioxide content
amounts to more than 5 % of the nitrogen oxide emission, continuous measurement of nitrogen oxide
NO consisting of nitrogen monoxide NO and nitrogen dioxide NO
x
many other countries.
7

APPLICATION

The M&C gas converters CG... convert the NO
this, the sample gas is conducted through a special stainless steel cartridge with a catalyst-filling based
on carbon-molybdenum. This conversion makes it possible to measure nitrogen oxides indirectly using
all commercially available NO-selective measurement instruments.
The converter is available in four versions: CG-2 and CG-2M with non heated gas inlet for 'cold gas'
conversion and versions CG-2H-W respectively CG-2MH-W with heated gas inlet and outlet and a sec-
ond internal heating circuit for 'hot gas' conversion.
For test purposes, the catalyst can be bypassed via two 3/2-way solenoid valves out of PVDF with
version CG-2M and one solenoid valve out of stainless steel with version CG-2MH-W. The solenoid
valves can be controlled internally or externally. The versions CG-2 and CG-2H-W are delivered without
bypass valves.
The M&C gas converters CG-2 and CG-2M... are designed as compact, user-friendly and easy to ser-
vice 19" plug-in units for mounting in 19" cabinet systems or with a mounting bracket for wall-mounting.
The M&C gas converters CG-2H-W and CG-2MH-W are executed as a wall mounting unit easy to
mount.
The catalyst cartridge is filled and formatted at the works and is ready for use immediately. The ability
to select the appropriate catalyst filling and the possibility of adjusting the cartridge temperature optimally
to the catalytic reaction by means of an electronic temperature controller provides a wide range of ap-
plications for the M&C gas converter CG... .
Version
CG-2
CG-2M
CG-2H-W
CG-2MH-W
Table 1 Summary of possible versions
www.mc-techgroup.com
19"-plug-in
Wall mounting
x
x
is prescribed by law in Germany and
2
content of the sample gas by catalysis into NO. To do
2
Bypass
optional
optional
x
x
CG-2 | 1.04.00
'Hot gas'-Conver-
sion
x
x
x x
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