Teledyne 6200T - Sulfides Analyzer - Manual (Page 23)

6200T Total Sulfur Analyzer Introduction
Teledyne Analytical Instruments 23
1. INTRODUCTION, FEATURES AND OPTIONS
This section provides an overview of the Model 6200T Analyzer, its features and its
options, followed by a description of how this user manual is arranged.
1.1. 6200T Overview
The 6200T consists of two major assemblies: a modified 6400T SO
2
analyzer and an
M501TS thermal converter. The Model 6200T is a microprocessor controlled UV
Fluorescence Total Sulfur Analyzer used to measure the total sulfur (TS) concentration
as sulfur dioxide (SO
2
) after first thermally converting the sulfur components of the
sample gas to SO
2
. When operating in TS mode, sample is drawn into the analyzer and
passed to the thermal converter. After conversion, the sample returns to the analyzer and
is drawn through the instrument’s sample chamber where it is exposed to ultraviolet
light, which causes any SO
2
present to fluoresce. The analyzer measures the amount of
fluorescence to determine the amount of SO
2
present in the sample gas. In SO2 mode,
the analyzer measures the sample without sending it though the converter, hnce only
SO
2
is meaured. The mode is user switchable from the touch screen display panel.
The 6200T’s exceptional stability is achieved with the use of an optical shutter to
compensate for sensor drift and a reference detector to correct for changes in UV lamp
intensity. Additionally an advanced optical design combined with a special scrubber,
called a "kicker" that removes hydrocarbons (which fluoresces similarly to SO
2
)
prevents inaccuracies due to interferents.
Calibration of the instrument is performed in software which stores SO
2
concentration
measurements made gas with when specific, known concentrations of SO
2
are supplied
to the analyzer. The microprocessor uses these calibration values along with other
performance parameters such as the sensor offset, UV lamp intensity and the amount of
stray light present and measurements of the temperature and pressure of the sample gas
to compute the final SO
2
concentration.
Built-in data acquisition capability, using the analyzer's internal memory, allows the
logging of multiple parameters including averaged or instantaneous concentration
values, calibration data, and operating parameters such as pressure and flow rate. Stored
data are easily retrieved through the serial port or optional Ethernet port via Teledyne’s
AICOM software or from the front panel, allowing operators to perform predictive
diagnostics and enhanced data analysis by tracking parameter trends. Multiple
averaging periods of one minute to 365 days are available for over a period of one year.
1.2. Features
The features of your 6200T UV Fluorescence Sulfur Dioxide Analyzer include:
 LCD Graphical User Interface with capacitive touch screen
 Ranges, 0-50 ppb to 0-20,000 ppb, user selectable
 Dual ranges and auto ranging
 Microprocessor control for versatility
 Multi-tasking software to allow viewing test variables while operating
 Continuous self checking with alarms
 Bi-directional USB, RS-232, and 10/100Base-T Ethernet ports for remote
operation (optional RS-485)