VIASYS Vmax Encore, Техническое справочное руководство

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Chapter 1 Introduction
1–10
L2707
Technical Reference Manual
Vmax Encore
filaments also makes it possible to track the rapidly changing gas temperatures encountered in all
Vmax Encore diagnostic functions.
MULTI-GAS ANALYZER
The rapid-response Multi-gas Analyzer provides a real-time measurement of Carbon Monoxide
(CO) and Methane (CH
4
). Measurement of the gas concentration is made using a Non-dispersive
Infrared (NDIR) technique. This technique involves directing a beam of infrared energy through a
sample of the gas to be analyzed and measuring the amount of infrared energy that is absorbed.
In order to measure multiple gases in a single sample, the analyzer incorporates an assembly with
multiple filters and detectors; this removes the requirement for the motorized filter wheel common
on other infrared analyzers. The wavelength of each band is carefully chosen to measure only the
desired gas.
O
2
Sensor
The oxygen sensor works on the principle of the electrochemical mechanism. It consists of a metal
lead as the anode and a potassium hydroxide solution as the electrolyte.
C
AUTION
!
During the course of servicing the equipment, wear eye and hand pro-
tection if you notice liquid on or around the O
2
sensor, and heed all
safety notices that are included in the procedure.
W
ARNING
!
The O
2
sensor contains 10% Potassium Hydroxide (KOH), a CORRO-
SIVE chemical. Contact with Potassium Hydroxide may cause irrita-
tion or severe chemical burns. Exposure may lead to acute and
chronic damage to the individual.
R35 – Causes severe burn
R42 – May cause sensitization by inhalation
R36/37/38 – Irritating to eyes, respiratory system and skin
W
ARNING
!
The O
2
sensor contains lead (Pb), a chemical known to the state of
California to cause cancer, birth defects, or other reproductive harm.
Exposure may lead to acute and chronic damage to the individual and
the fetus of a pregnant woman.