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CMM USER'S MANUAL (E2.51)
10
1
GASMET CMM OVERVIEW
1.1 Basic structure
The Gasmet CMM is designed for continuous total mercury (atomic mercury Hg
0
and oxidized Hg
2+
,
HgCl
2
) monitoring and the measurement is based on Cold Vapor Atomic Fluorescence (CVAF).
Integrated high temperature dry thermal converter converts all Hg compounds to atomic mercury.
The Gasmet CMM is designed for on-line measurements. It measures hot, wet and corrosive gas
streams. All sample wetted parts of the Gasmet CMM are heated up to 180 °C.
The Gasmet CMM consists of the Gasmet CVAF mercury analyzer, the Gasmet test gas generator for
atomic mercury and mercury chloride, and the Gasmet Hg dilution probe (
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ot found.
). All parts of the system are 19” rack mounted and are installed on pullout shelves. The
Gasmet CMM includes all power connections and temperature controllers for heated line and heated
sample probe. The operation of the system is fully automatic and controlled by the Gasmet MAUI
application software. Additionally, all functions of the Gasmet CMM can also be performed manually.
The built-in control panel PC and the Gasmet MAUI software control the CMM fully automatically. The
measuring data can be transferred from the CMM to control room with analog output 4-20 mA. The
alarms are transferred with relay contacts. The Gasmet CMM provides alarm functions such as System
alarm, Service request, Maintenance, Concentration alarm and Result valid.
The Gasmet CMM is air conditioned by a compressor-cooling unit.
Figure 1. A general view of the CMM