Prior to shipment, TAI equipment is thoroughly inspected and tested. Should equipment failure occur, TAI
assures its customers that prompt service and support will be available.
COVERAGE
After the warranty period and throughout the equipment lifetime, TAI stands ready to provide on-site or inplant service at reasonable rates similar to those of other manufacturers in the industry. All maintenance
and the first level of field troubleshooting are to be performed by the customer.
GENERAL
TAI warrants each Product manufactured by TAI to be free from defects in material and workmanship under
normal use and service for a period of one year from the date of delivery. All replacement parts and repairs
are warranted for 90 days after the purchase.
If a Product fails to conform to its specifications within the warranty period, TAI shall correct such defect
by, in TAI's discretion, repairing or replacing such defective Product or refunding the purchase price of such
Product.
02024c
The warranties set forth in this section shall be of no force or effect with respect to any Product:
(i) that has been altered or subjected to misuse, negligence or accident, or (ii) that has been used in any
manner other than in accordance with the instruction provided by TAI or (iii) not properly maintained.
THE WARRANTIES SET FORTH IN THIS SECTION AND THE REMEDIES THEREFORE ARE
EXCLUSIVE AND IN LIEU OF ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
FOR PARTICULAR PURPOSE OR OTHER WARRANTY OF QUALITY, WHETHER EXPRESSED
OR IMPLIED. THE REMEDIES SET FORTH IN THIS SECTION ARE THE EXCLUSIVE REMEDIES
FOR BREACH OF ANY WARRANTY CONTAINED HEREIN. TAI SHALL NOT BE LIABLE FOR
ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR RELATED TO THIS
AGREEMENT OF TAI'S PERFORMANCE HEREUNDER, WHETHER FOR BREACH OF
WARRANTY OR OTHERWISE.
TERMS AND CONDITIONS
All units or components returned to TAI should be properly packed for handling and returned
freight prepaid to the nearest designated Service Center. After the repair, the equipment will be
returned, freight prepaid.
1.1 Claims for damaged shipments
All instruments should be thoroughly inspected immediately upon receipt. Material in the container
should be checked against the enclosed packing list. If the contents are damaged and/or the instrument
fails to operate properly, the carrier and TAI should be notified immediately.
The following documents are necessary to support claims:
Original freight bill and bill of lading
•
Original invoices or photocopy of original invoice
•
Copy of the packing list
•
Photographs of damaged equipment and container
•
1.2 Claims for shipping discrepancies
All containers should be checked against packing list immediately upon receipt. If a shortage occurs,
notify the carrier and TAI immediately. TAI will not be responsible for shortages against the packing list
unless they are reported immediately.
The following information is necessary to make a claim:
The instrument model number
•
Serial number
•
Sales order number or purchase order number
•
Upon receipt of a claim, TAI will advise disposition of the equipment for repair or replacement.
TAI - Thermal Converter Operator Manual - Page 2
2.0 INTRODUCTION
This manual addendum should be used in conjunction with the standard Model 6200A.
2.1 Specifications
2.1.1 Analyzer Specifications
The specifications for the SO2 analyzer are contained in the standard Model 6200A manual.
The TAI Model 6200A Sulfides Analyzer, is designed to measure mixed sulfur impurities, collectively
referred to as TRS, in carbon dioxide (CO2) gas. Since there is no SO2 scrubber in the system, the
instrument reading is the sum of the reduced sulfur compounds and SO2. The 6200A consists of a
modified 6200A UV Fluorescence SO2 Analyzer and a M501TRS high temperature quartz converter.
The M501TRS converts sulfur compounds to SO2 at high temperature by flowing the gas through a hot
quartz tube, the resultant reaction is as follows:
TRS + O2 --> SO
Since the gas being analyzed is CO2, which generally contains no oxygen, there is an assembly that injects
a small amount of air into the sample stream resulting in about 4% oxygen in the sample. The added
oxygen allows the sulfur compounds to be oxidized to SO2. Any SO2 present in the sample is unaffected
by the converter. The sample gas then passes to a modified 6200A analyzer where the converted
compounds are analyzed as SO2.
2
2.3 Configurations
There are three configurations available:
1. The standard unit consisting of:
A modified 6200A Fluorescent SO2 Analyzer
•
A M501TRS High Temperature Converter
•
See Figure 2.1 for the pneumatic diagram
•
2. The standard unit described above plus:
An Internal Zero/Span (IZS) Option with H2S permeation tube
•
The IZS option uses sample gas, passed through a charcoal scrubber to dilute H2S from
•
the perm tube plus a converter bypass valve to assure a high quality zero/span
calibration.
See Figure 2.2 for the pneumatic diagram
•
3. The standard unit described above plus:
An external PRC-6000 calibrator for blending tanks of H2S or SO2 span gas with CO2.
•
See Figure 2.3 for the pneumatic diagram
•
TAI - Thermal Converter Operator Manual - Page 4
FIGURE 2.1 – BASIC CONFIGURATION
TAI - Thermal Converter Operator Manual - Page 5
FIGURE 2.2 – WITH IZS OPTION
TAI - Thermal Converter Operator Manual - Page 6
FIGURE 2.3 – WITH M702 CALIBRATOR OPTION
TAI - Thermal Converter Operator Manual - Page 7
2.4 The M501TRS – Total Reduced Sulfur Converter
The M501TRS oxidizes reduced sulfur compounds to SO2 in a high temperature quartz oven.
Power to the heater is controlled by a front panel mounted programmable temperature controller. Power
to the heater is switched by a solid state switch. An over-temperature alarm contact closure is located on
the rear panel. The alarm set point is adjustable in the temperature controller. The heater temperature is
WARNING !
INSURE PROPER LINE VOLTAGE IS SELECTED PRIOR
TO PLUGGING UNIT INTO POWER SOURCE.
WARNING !
THE QUARTZ TUBE AND HEATER ARE VERY HOT
DO NOT TOUCH
sensed by a Type K (chromel-alumel) thermocouple probe inserted in the bore alongside the quartz tube.
The quartz tube carrying the sample mixture runs through the core of the heater and is heated by radiation
from electrical heating elements at the heater bore surface. See Figure 2.4 for a layout view of the
converter.
TAI - Thermal Converter Operator Manual - Page 8
FIGURE 2.4 – TRS CONVERTER LAYOUT
TAI - Thermal Converter Operator Manual - Page 9
2.5 Installation
The 6200A comes in two chassis. There is a power cord for each that should be plugged into the correct
voltage and frequency receptacle. See the tag on the rear panel of each chassis for the voltage and
frequency settings. The power connection must be made by an approved three-wire-grounded power cord.
The pneumatic connections are shown in Figure 2.5.
Connection to the TRS analyzer must be made with Teflon or stainless steel tubing.
•
Connect the sample inlet to the labeled fitting.
•
The sample exhaust must be routed to a well ventilated area away from the air inlet for the zero
•
air scrubber on the rear panel.
CAUTION !
DO NOT BLOCK THE SIDE AND BACK
VENTILATION OF THE M501TRS
CONVERTER
The overall pneumatic diagrams of the Model 6200A are shown in Figures 2.1, 2.2, and 2.3.
TAI - Thermal Converter Operator Manual - Page 10
FIGURE 2.5 – PNEUMATIC CONNECTIONS
TAI - Thermal Converter Operator Manual - Page 11
2.6 Operation and Calibration
Refer to the 6200A manual for the overall operation of the SO2 analyzer. This unit has some unique
operating characteristics and calibration procedures detailed below.
2.6.1 Calibration Theory
The basic purpose of this instrument is to analyze CO2 sample gas for sulfur containing impurities.
Unlike similar analysis, there is not any zero air available. The following procedure will to allow the
instrument to be zeroed and spanned using the CO2 sample gas that may contain impurities.
The CO2 gas used for zero air is routed from the sample inlet through a charcoal scrubber to remove any
SO2 present.
This gas then passes through the converter and into the reaction cell for measurement. When the signal is
stable, the value Z1 is stored.
Since there are numerous other sulfur containing gasses, it is not possible to determine how well the
charcoal will scrub compounds other than SO2. A 3-way valve is used to bypass the M501TRS converter,
so the sample gas now passes through a charcoal scrubber, then directly to the reaction cell.
The instrument is allowed to collect data with the converter bypassed and this reading is stored as Z2.
This is the actual instrument zero reading.
Span calibration uses span gas generated by a H2S permeation tube, which has been diluted by scrubbed
CO2 described above.
During this phase, the converter MUST be in the pneumatic pathway so the H2S can be oxidized to SO2
and thus measured. However, the converter will not only convert the H2S, but also any impurities that
were not scrubbed by the charcoal, thus producing an anomalously high reading. (If there is no additional
impurities in the CO2 gas, the correction factor will be zero.)
To correct for this error, the software computes a span correction by the following equation:
Z3 = Z1 - Z2
Where:
Z2 = Zero reading with the converter bypassed.
Z1 = Zero reading with the converter in place
Z3 = Zero gas impurity correction factor
TAI - Thermal Converter Operator Manual - Page 12
When the span gas reading stabilizes, Z3 is subtracted from the span reading, yielding the actual H2S span
gas value as follows:
[H2S]
Actual
= [H2S]
Apparent
– Z3
Where:
Z3 = Zero gas impurity correction factor
[H2S]
[H2S]
The [H2S]
Actual
= Analyzer response to H2S perm tube + impurities in the zero air.
Apparent
= H2S span reading corrected for impurities in zero air.
Actual
is the reading used to compute the span concentration.
2.6.2 Zero and Span Calibration Procedure
The following is a concise summary of the steps required to zero and span calibrate the 6200A. Please
refer to the standard 6200A manual for a more complete description of the calibration procedure.
Table 2.2 – Zero Calibration Procedure
1.
Step
Number
Press CALZWith sample gas flowing into the sample inlet of the
ActionComment
instrument, press CALZ, which routes sample air into the
charcoal scrubber.
2.Press ZEROZERO starts Phase 1 of the zero calibration procedure,
allowing zero to be measured with the converter in the
pneumatic pathway. Allow 10 min for stable zero.
3.
Press ENTR
After allowing the instrument to stabilize, press ENTR, to
store the Z1 zero value with the converter in the pathway.
The ZERO key now re-appears, which starts Phase 2
of the zero calibration. Allow 10 min for stable zero.
4.Press ENTRThe converter is not in the pathway. Allow the
instrument to stabilize on the new zero value, then press
ENTR to store the Z2 zero value.
5.
Press EXIT
Returns instrument to SAMPLE mode.
TAI - Thermal Converter Operator Manual - Page 13
Table 2.3 – Span Calibration Procedure
Step
Number
1.
2.Press SPANWith the converter in the pathway, the instrument will
3.
4.
Press CALSWith sample gas flowing into the sample inlet of the
Press ENTR
Press EXIT
ActionComment
instrument, press CALS, which routes sample air into the
charcoal scrubber, then over the H2S permeation tube.
respond to H2S from the perm tube plus any impurities in
the zero air.
After allowing the instrument to stabilize, press ENTR.
The instrument will use the span reading, corrected for
impurities, to compute the actual H2S span value.
Returns instrument to SAMPLE mode.
2.7 M501TRS Temperature Controller
The heater temperature is maintained by a front panel-mounted programmable controller. The “Fuji
Electric PXZ Series Operation Manual” is included with the documentation for this instrument. The
controller has been set up at the factory. Should further adjustments be necessary, a brief summary of the
operation of the controller is included.
By pressing the PV/SV button in the lower left corner of the controller, you can see the Present Value
“PV” (actual temperature) or the Set Value “SV” (Set point Value).
2.7.1 Changing the Temperature Set Point
The temperature can be adjusted to optimize conversion efficiency, follow these steps:
1. Select SV with the PV/SV button,
2. Select the Set-Point value at approximately 960oC by Press the "up-arrow" under the digit you
want to change, (the digit will flash).
NOTE:
DO NOT SET THE TEMPERATURE HIGHER THAN 1050OC
TAI - Thermal Converter Operator Manual - Page 14
3. Press the "up-arrow" under the digit or the "down-arrow" at the left to scroll the digit to the
desired value.
4. Repeat for the other two digits,
5. Press the ENTER button.
6. Select PV with the PV/SV button to observe the actual temperature. Allow temperature to
equilibrate for a minimum of 30 to 45 minutes.
NOTE:
It is normal for the ceramic heating element to emit a red glow
at the operating temperature.
2.7.2 Adjusting the P-I-D Parameters
In the event that the control parameters must be changed or in the event that a new controller is installed,
it must be reprogrammed to suit the thermal characteristics of the instrument. It is recommended that the
Auto Tune function be used to set the control functions if reprogramming is necessary.
The following table is a guide to the approximate values for setting the parameters that will produce the
initial settings for the autotune function. Below is a summary of the autotune procedure, refer to the Fuji
Manual for more detailed information.
To perform Auto Tune function, set the parameter A7 to 1, then press ENTER.
The controller will begin the autotune process, which takes several minutes. The decimal point at the
lower right of the display will blink, indicating the controller is autotuning. During the process, the
temperature may oscillate ±100oC or more. When the process is completed, the decimal point will stop
blinking.
TAI - Thermal Converter Operator Manual - Page 15
Table 2.4 – Temperature Controller - Initial Settings
PRESSDISPLAYINITIAL VALUE
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
Table 2.4 shows a Secondary Menu of parameters that set more basic parameters of the controller, these
include the thermocouple type, the temperature units etc.
P PROP BAND
i INTEGRAL
d DERIVATIVE TIME
AL LOW ALARM
SETPOINT
AH HIHG ALARM
SETPOINT
7C CYCLE TIME
HYS HYSTERESIS
A7 AUTOTUNE
LOC LOCK
Table 2.5 – Temperature Controller - Secondary Menu
UP/DOWN SET TO “11”
SET TO “10”
SET TO “7.7”
SET TO “50” (C BELOW FINAL SETPOINT)
SET TO “50” (C ABOVE FINAL SETPOINT)
SET TO “2”
SET TO “3”
SET TO “0” (OFF)
“0” (OPEN) “1” (LOCKED)
“2” (SV ONLY OPEN)
PRESSDISPLAYPARAMETER VALUE
SEL HOLD TILL p-n1
SEL p-n2
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
p-dF DIGITAL FILTER
P-SL LOWER LIMIT
P-SU UPPER LIMIT
P-AL ALARM TYPE2
P-AH ALARM TYPE 1
P-An HYTERESIS
P-dP DECIMAL LOCATION
PVOF PROCESS OFFSET
SVOF SET POINT OFFSET
P-F
FUZZY FUZZY LOGIC
SET TO “0”
SET TO “3” (TYPE K THERMOCOUPLE)
SET TO “5”
SET TO “32” (32C)
SET TO “1050” (1050C)
SET TO “900”
SET TO “1050”
SET TO “3”
SET TO “0”
LEAVE AT “0”
LEAVE AT “0”
SET TO “ºC” (CENTIGRADE)
SET TO “ON”
TAI - Thermal Converter Operator Manual - Page 16
3.0 TROUBLESHOOTNG
NO POWER:Plugged in?
Switched on?
Circuit breaker Tripped?
NOT HEATING:PV/SV switch to PV. Is it heating?
PV/SV switch to SV. Set point correct?
Socket in place on back of controller?
Check M501TRS wiring diagram Figure 3.1
TRS ANALYZER UNSTABLE:Leak-check.
(Pressurize and see if pressure falls.
Use soap bubble to find leak.)
EFFICIENCY <90%:Leaking? Leak-check.
Plugged? Compare flow through and bypassing converter.
Flow too high?
Set-point temperature optimized?
Span gas correct?
Contaminated? Check inside of Teflon tubing.
CONVERTER TEMP UNSTABLE: Perform autotune procedure in Section 2.7.2.
TAI - Thermal Converter Operator Manual - Page 17
FIGURE 3.1 – TRS WIRING DIAGRAM
TAI - Thermal Converter Operator Manual - Page 18
4.0 MAINTENANCE
4.1 SO2 Analyzer Maintenance
Maintenance of the SO2 analyzer is covered in Section 8 of the 6200A manual.
4.2 Changing the Quartz Tube
1. Turn off M501TRS and allow it to cool to room temperature.
2. See Figure 2.4. – M501TRS Layout
3. Remove the screws from the top inside of the front panel and fold panel downward.
4. Loosen front and rear fittings at each end of the tube.
5. Carefully slide tube out of heater – the ceramic bushings at each end of the heater are very fragile.
6. Slide in new tube and re-connect fittings.
7. Leak check the unit.
8. Check the converter efficiency. See Section 4.3
4.3 Checking the Converter Efficiency
After maintenance it is good practice to check the converter efficiency. To check the converter efficiency,
perform the following procedure:
1. Obtain a gas blender that will create H2S span gas (either permeation tube or tank) with CO2 gas as
the diluent. Remember that rotameters and mass flow controllers are calibrated with air or nitrogen.
Using them with CO2 will produce large calibration errors. Since CO2 gas has considerably different
characteristics, use flowmeters such as soap bubble, or BIOS – DryCal flowmeters that measure
volume flow.
2. Produce a calibration gas of 400 ppb H2S at a flow greater than the demand of the instrument, vent the
excess gas out of the room.
3. Allow the 6200A to stabilize at span.
4. Adjust the converter efficiency by:
Lower the set-point temperature of the Converter in 5oC increments allowing 10
•
minutes minimum between increments until a drop of approximately 1% Full Scale is
observed. Note the Thermal Converter temperature.
Increase the set-point temperature in 5C increments allowing 10 minutes minimum
•
between increments until a drop of approximately 1% Full Scale is observed. Note the
Thermal Converter temperature.
Set the set-point value to fall midway between the low and high temperatures.
•
TAI - Thermal Converter Operator Manual - Page 19
If no drop off occurs when the temperature is raised to 1050C, select the set-point
•
temperature that maximizes analyzer reading.
4.4 Sample Diluter Maintenance
The sample diluter is used to inject a small amount of ambient air into the sample stream to provide
oxygen for the converter. The diluter is located on the inside rear panel of the SO2 analyzer. It consists of
a stainless steel block and 2 orifices to control the amount of sample and air that is blended.
There should be no periodic maintenance required on this assembly, but a diagram is included in case
rebuilding of this assembly is required. The assembly is shown in Figure 4.1.
TAI - Thermal Converter Operator Manual - Page 20
FIGURE 4.1 – DILUTER FLOW BLOCK ASSEMBLY
TAI - Thermal Converter Operator Manual - Page 21
INSTRUCTION MANUAL
MODEL 6200A
SULFUR DIOXIDE ANALYZER
SERIAL NO. _______________
TELEDYNE ANALYTICAL INSTRUMENTS
16830 CHESTNUT STREET
CITY OF INDUSTRY, CA 91749-1020
TOLL-FREE: 888.789.8168
FAX: 626.961.2538
TEL: 626.934.1500
E-MAIL: tetci_customerservice@teledyne.com
WEB SITE: www.teledyne-ai.com
Copyright 1994
02164
REV. G
12/12/98
TAI Model 6200A SO2 Analyzer Operator Manual, 02164, Rev. G
Table of Contents
1 HOW TO USE THIS MANUAL..................................................................1-1
AINTENANCE SCHEDULE
EPLACING THE SAMPLE PARTICULATE FILTER
EPLACING THE PERMEATION TUBE (OPTION
EPLACING THE
LEANING ORIFICE AND ORIFICE FILTER
LEANING THE REACTION CELL
NEUMATIC LINE INSPECTION