Teledyne 201A User's Manual
Contents
1. 20 4 0 M201A SPARE PARTS LIST 28 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 LIST OF FIGURES FIGURE 1 M201A AMMONIA ANALYZER BLOCK DIAGRAM ii 21 FIGURE 2 M201A EXTERNAL PNEUMATIC CONNECTION DIAGRAM WITH ECO EXTERNAL CALIBRATOR OPTION i a a Oi 22 FIGURE 3 M201A PNEUMATIC DIAGRAM BASIC iii 23 FIGURE 4 M201A PNEUMATIC DIAGRAM Z S 2 7 1 1 1 0 0000000000000000000000001 24 FIGURE 5 M201A PNEUMATIC DIAGRAM EXTERNAL CALIBRATOR OPTION 25 FIGURE 6 M501NH CONVERTER CARTRIDGE 2 242204 0000000000005005000000000000000400 000 26 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 LIST OF TABLES TABLE 2 1 ZERO CALIBRATION PROCEDURE ZERO GAS THROUGH THE SAMPLE PORT 11 TABLE 2 2 ENTER THE EXPECTED SPAN GAS CONCENTRATIONS PROCEDURE 11 TABLE 2 3 SPAN CALIBRATION PROCEDURE SPAN GAS THRU SAMPLE PORT 12 TABLE 2 4 ZERO CALIBRATION PROCEDURE ZERO GAS FROM REAR PANEL ZERO AIR INLET 13 TABLE 2 5 ENTER THE EXPECTED SPAN GAS CONCENTRATIONS PROCEDURE2. 14 TABLE 2 6 CALS SPAN CAL PROCEDURE GAS FROM REAR PANEL SPAN GAS INLET 15 TABLE 3 1 PREVENTATIVE MAINTENANCE SCHEDULE eee 18 TABLE 3 2 M501NH CONVERTER REBUILD PARTS LIST iii 19 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 1 0 M201A AMMONIA ANALYZER This manual is to be used in conjunction with the M200A NOx Analyzer manual 02246 supplied with this instrument The M201A Ammoria Analyzer consists of a modified M200A Nitrogen Oxides Analyzer and 501 Converter A functional block diagram of the system is shown in Figure 1 The instrument comes in three pneumatic configurations The basic system is shown in Figure 3 The M201A with Z S valves is shown in Figure 4 e The M201A with External Calibrator Option ECO is shown in Figure 5 Figure 2 can be used to connect the M201A system for installation Please note that for a M201A with either a Zero Span or ECO option you must connect the umbilical cord 02255 between the analyzer and the converter assembly 1 1 Principle of Operation Teledyne API Model 201A Analyzer measures ammonia by converting NH to nitric oxide by the following reaction 4NH3 4NO 6H50 The resulting NO is then measured by the chemiluminescent r
3. Analyzer Instruction Manual 04689 Rev 1 Table 2 6 CALS Span Cal Procedure Gas from rear panel span gas inlet Comment OO O 1 Press The M201A enters the calibrate mode The CALS Z S valves are activated to route span gas into the analyzer 2 Press Set the converter efficiency parameter to 1 0000 then CAL CONV SET Press ENTR EXIT Wait 20 Wait for the reading to stabilize at span value min 3 Press If vou change vour mind after pressing SPAN SPAN can still press EXIT here without spanning the instrument 4 Press Pressing ENTR actually changes the ENTR calculation equations and causes the instrument to read the TN and TNx span concentrations 5 Press EXIT M201A returns to sampling Immediately after calibration data is not added to the DAS averages 2 1 2 Channel Calibration Quality After the TN and TNx channel calibration it is important to check the slopes and offsets to make sure they fall within the acceptable range The tolerances are different than a typical NOx analyzer primarily because of the performance of the M501NH ammonia converter Slopes can vary from 2 0 to 0 7 and should be within 20 of each other with the TNx slope typically smaller than the TN slope Offsets should be zero 250 mV and be within 100mV of each other If the slope and offsets are within specifications proceed on the ammonia channel calibration 15 Teledyne
4. Model 201 Analyzer Instruction Manual 04689 Rev 1 2 1 3 NH3 Calibration Since the system efficiency is less than 100 it is necessary to determine a conversion efficiency factor for ammonia and enter it into the system 1 Setthe converter efficiency to 1 0000 by Press CAL CONC CONV SET on the keyboard Press the keys under the numbers until 1 0000 appears Press EXIT to return to the sample mode 2 Introduce ammonia span gas of known concentration into the instrument Allow time for instrument stabilization The final readings will be less than the concentration calculated from flows For example with 400 ppb NH3 span gas TN 40ppb TNx 380 ppb The 40 ppb TN reading is due to the fact that the moly converts a small amount of the NH3 gas to The 380 ppb TNx reading is due to ammonia conversion plus some conversion of nitrogen and oxygen in the dilution air 3 Continuing with the example above the instrument will report a NH3 concentration value of 340 ppb Divide the reported NH3 concentration by the concentration computed from flow data NH3 converter eff INH3meotal NH3rLows From the above example M201A NH3 reading 340 ppb NH3 conc from flows 400 ppb 340 400 0 85 NH3 converter svstem efficiencv 4 This value now is entered into the instrument Press CAL CONC CONV SET Press the buttons under the numbers until the desired value is entered in this case 0 8500 then press ENTR P
5. Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 Do NOT use copper tubing or fittings designed for household plumbing Use ONLY Chromatography grade cleaned passivated stainless steel tubing Use ONLY Glass tubing for sample inlet manifold These rules apply also to your calibrator s internal plumbing Verify that the calibrator pneumatic pathway that contacts ammonia only uses stainless steel or glass tubing The M702SS calibrator supplied with the External Calibration Option is built with stainless steel fittings and tubing for all internal plumbing wetted by NH3 Tvpical ambient NH3 levels are lt 15 ppb unless there is some large source of ammonia nearby so the sampling and analysis system must be carefully designed and well maintained 1 1 2 Sample Filtration The M201A does not come with a sample filter installed Depending on the options ordered a sample filter be separately packaged with the instrument If the filter is installed the instrument response time is significantly increased due to its large surface area Also the condition of the filter particulate loading and tvpe can adverselv affect the response time For minimum response time operation the instrument should be supplied with clean sample gas at ambient pressure If the sample filter is not included the additional filter in the 201 pneumatic pathway is a 1 2 dia stainless steel sintered filter used t
6. 10 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 Table 2 1 Zero Calibration Procedure Zero Gas Through the Sample Port Sep No Acton Comment 1 Press The M201A enters the calibrate mode from CAL sample mode Input zero gas through the sample port 2 Wait 20 Wait for reading to stabilize at zero value min 3 Press If vou change vour mind after pressing ZERO ZERO can still press EXIT here without zeroing the instrument 4 Press Pressing ENTR actuallv changes the ENTR calculation equations 5 Press M201A returns to sampling Immediatelv after EXIT calibration data is not added to the DAS averages Table 2 2 Enter the Expected Span Gas Concentrations Procedure StepNo Acton Comment 1 Press This key sequence causes the M201A to prompt for the expected TNX concentration CAL CONC TNX Enter the TNX span concentration value by pressing the key under each digit until the expected value is set This menu can also be entered from CALS or CALZ 2 Press ENTR ENTR stores the expected TNX span value Press Now enter the expected TN span concentration CAL CONC TN as in step one Press ENTR Pressing ENTR stores the TN span value and returns the prompt to the CONC menu Pata EXIT Returns instrument to SAMPLE mode 11 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 Table 2 3 Span Calibration Procedure Span Gas thr
7. Option ECO 25 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 Figure 6 M501NH Converter Cartridge 26 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 27 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 000940400 000940600 002270100 002730000 002761020 003290000 004020200 005140300 007040000 007280000 010680100 010860000 011310000 011930000 011980000 012360000 013140000 013570000 013600000 014020300 014020400 014040000 014040100 014080100 014610000 4 0 M201A SPARE PARTS LIST Orifice 4 mil 80 cc Rx Cell Orifice 10 mil 500 cc Rx Cell Gasket Rx Cell Qty 12 Window 665 NM CPU Board 201A AMX Thermistor Assembly Flow Pressure Sensor Board V F Board Keyboard NEW Display Heater MOLY Converter Status Temperature Board Drier Assembly Complete with Flow Control PMT NOx Assembly MOLY Thermocouple Type J Fan Power Supply Module Fan PMT Cooler Thermistor Assembly Cooler Operators Manual for M200A M200A 37 mm 1 um Filter Expendables Kit M200A 47 mm 1 um Filter Expendables Kit M200A Level 1 Spare Parts Kit for 10 units M200A Spares Kit for 1 Unit Assembly High Voltage Power Supply Cooler A
8. could ensue with possible hazardous consequences Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 TABLE OF CONTENTS SAFETY MESSAGES ue u u bala da d dada a die qia a 1 TABLE OEF CONTENTS uei en 2 1 0 M201A AMMONIA ANALYZER 6 1 1 PRINCIPLE OF OPERATION i N etn cue cli o GC ade dw 6 1 1 1 Special Considerations for Ammonia 7 1 1 2 Sample Filtraliont sa u esd e 8 1 2 201 ANALYZER 6 8 9 2 0 CALIBRATION PROCEDURE 10 2 1 ZERO SPAN CALIBRATION BASIC 1 rc 10 2 1 1 Zero Span Calibration with Z S Valves or ECO Option 13 2 1 2 TN TNx Channel Calibration 2 15 Zia NE AID ION cuu K 16 2 1 4 Channel Calibration Quality e doo 17 3 0 MAINTENANCE SCHEDULE 18 3 1 M201A MAINTENANCE SCHEDULE uQ A A U LO a 18 3 2 MAINTAINING THE M501NH 18
9. MANUAL ADDENDUM MODEL 201A AMMONIA ANALYZER TELEDYNE ADVANCED POLLUTION INSTRUMENTATION T API 9480 CARROLL PARK DRIVE SAN DIEGO CA 92121 5201 TOLL FREE 800 324 5190 FAX 858 657 9816 TEL 858 657 9800 E MAIL api sales teledyne com WEB SITE www teledvne api com 04689 REV B1 Copyright 2005 T API Inc 12 September 2005 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 SAFETY MESSAGES Your safety and the safety of others is very important We have provided many important safety messages in this manual Please read these messages carefully A safety message alerts you to potential hazards that could hurt you or others Each safety message is associated with a safety alert symbol These symbols are found in the manual and inside the instrument The definition of these symbols is described below GENERAL WARNING CAUTION Refer to the instructions for details on the specific danger CAUTION Hot Surface Warning CAUTION Electrical Shock Hazard Technician Symbol All operations marked with this symbol are to be performed by qualified maintenance personnel only Electrical Ground This svmbol inside the instrument marks the central safetv grounding point for the instrument CAUTION The analvzer should oniv be used for the purpose and in the manner described in this manual If vou use the analvzer in a manner other than that for which it was intended unpredictable behavior
10. alves w o killer can 29 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 KIT000129 KIT000191 OR0000001 OR0000002 OR0000010 OR0000012 OR0000014 OR0000021 OR0000025 OR0000034 OR0000042 OR0000044 OR0000045 PS0000010 PU0000005 PU0000006 PU0000011 RL0000003 RL0000007 RL0000008 RL0000015 SW0000006 SW0000008 VA0000007 VA0000024 M201A Spare Parts List cont Welded Moly Cartridge only Rebuild NH3 INNER TUBE amp CATALYST O Ring Flow Control O Ring Bearing Cell O Ring S O3 Generator O Ring Permeation Oven Units with 125 O Ring Permeation Oven O Ring Scrubber O Ring Zero Air Scrubber O Ring Input Output Mirror Detector O Ring Sensor Assembly O Ring Reaction Cell O Ring Sample Filter 15V Switching Power Supply Pump 1150V 60Hz Pump 220V 50Hz 607 Pump Rebuild Kit Solid State Relay 12 Vdc 3 AMP Opto Relay Solid State Relay 12 VDC Solid State Relav 115 Vac Overheat SW Cell Oven Pressure Sensor Solenoid Valve Stainless Steel 12V Manifold Valve 3 Wav Vent 30
11. eaction of NO with ozone Consult Section 4 1 in the M200A manual provided with this instrument for more details on NO measurement A molybdenum converter is continuously in the pneumatic pathway providing the TN channel signal The M501NH ammonia converter is periodically switched so both converters are in series creating the TNx signal The ammonia concentration is computed by the difference between the TNx and TN channels as shown in the following equation NH3 gt TNx TN See the pneumatic diagram in Figure 1 The actual formula for computation of ammonia concentration is more complicated than the above equation as it includes converter efficiencies plus sample temperature and pressure The difficulty in ammonia measurement is that the molybdenum converter Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 1 1 converts some of the ammonia to NO thus the TN channel data contains a small ammonia signal Secondly the ammonia converter does not convert all of the ammonia or ambient NO2 to NO Finally the high temperature in the ammonia converter causes the oxygen and nitrogen in ambient air to react creating a background of NOx which needs to be factored into computing the result Fortunately all of the above shortcomings have been overcome the M201A by careful calibration and calculation of the result Periodically the AutoZero valve switches allowing the analyzer to read zero backgr
12. he converter assembly out of the U shaped bracket and slide the assembiv out of the oven 6 Loosen the 1 2 SS tube fitting nearest the hold down bracket this fitting holds the central tube in the converter Replace the tube that is part of 000191 7 Re assemble the converter bv doing the above steps in reverse order 19 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 3 3 AutoZero Flow Check Since the M201A is an ammonia analyzer the flow through the AutoZero orifice is especially important Check the AutoZero flow as follows 1 This procedure should be performed with the sample pump running 2 Fold down the rear panel on the M201A chassis Locate the vacuum manifold at the center rear of the chassis Locate the 1 8 tube fitting 277 from the left It will a label of 0 010 indicating the flow orifice installed 3 Remove the fitting and attach a calibrated flowmeter capable of measuring in the range of 500 The flowmeter should indicate a flow of 500 10 4 If the flow is outside this range most likely lower due to plugging 1 Turn off the sample pump and instrument 2 Remove the 1 8 pipe to tube fitting and remove the 1 2 sintered filter p n FL0001 This filter is meant to protect the orifice it will usually become plugged and need replacement rather than the orifice Replace the filter then re assemble the manifold Re start
13. ires replacement The most obvious indicator of failure is no ammonia conversion despite the converter being at temperature This is caused by the oxidized tube breaking off in the converter The following procedure describes how to disassemble and replace converter parts The various parts in the converter become delicate and brittle after prolonged exposure to high temperatures It is therefore a good idea to have a complete set of replacement parts on hand before starting as listed in Table 3 1 18 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 Table 3 2 M501NH Converter Rebuild Parts List Part No Description KIT000191 Converter Rebuild Kit KIT000139 Ceramic Bushings HE0000007 Ceramic Heater 220W 60 VAC Procedure 1 Turn off power to the converter and allow to cool IT IS VERY IMPORTANT THAT THE CONVERTER BE COOL BEFORE DISASSEMBLY OR REPAIRS CAUTION VERY HOT Will cause severe burns disassembly while hot will damage other converter components Allow sufficient time to cool 2 Remove the chassis cover of the M501NH remove the aluminum cover over the oven remove the two U shaped hold down clamps 3 Disconnect the 1 stainless steel and 2 PTFE tubes from the converter cartridge 4 Loosen the nut holding the cartridge assembly in the U shaped angle bracket mounted on the chassis floor 5 Gentiv lift and tilt t
14. o protect the flow control orifice from plugging This filter will plug rapidiv if the sample gas is not filtered before entering the analvzer Some means of filtering the sample gas such as an external stainless steel filter should be added upstream of the analvzer Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 1 2 M201A Analyzer Specifications Ranges 0 50 to 0 2000 ppb in 1 ppb increments Range Modes Single Independent AutoRange Noise at Zero 5 ppb RMS Noise at Span lt 1 0 of reading above 50 ppb Lower Detectable Limit 1 ppb RMS Zero Drift 2 ppb 24 hours Span Drift lt 1 0 FS Range 7 days Lag Time 40 sec Rise Time 90 120 sec Fall Time 90 120 sec Sample Flow Rate 1000 cc min Linearity 2 of full scale Precision 1 0 of reading Temp Range 10 30 C Dimensions HxWxD 7 x 17 x 23 6 18cm x 43cm x 61cm Weight Analyzer 43 lbs 20 kg Weight Converter 24 Ibs 11 kg Weight Pump 16 lbs 7 kg Power Analyzer 100V 50 60 Hz 120V 60 Hz 220V 50Hz 240V 50 Hz 125 watts Power Analyzer Power Pump 230V 50 Hz 125 watts 110V 60 Hz 220V 50 Hz 240 50 Hz 295 watts Power Pump CEMark Environmental 230 V 50 Hz 2 5 A peak Installation Category Pollution Degree 2 Over voltage Category ll Analog Output 0 100 0 1 0 5 0 10VDC bi
15. ound The AutoZero readings subtracted from all of the other readings This improves zero baseline stability As with many chemical reactions the conversion of ammonia in the presence of other oxides of nitrogen is complicated In the molybdenum converter operating at 315 C the following significant reactions are taking place Mo gt MoOs NO 100 Eff NHs Mo gt MoO NO lt 10 Eff Notice in the second reaction some of the ammonia is converted to NO by the molybdenum metal The M501NH NH3 Converter operates at 825 C Atthis high temperature several reactions occur NO gt NO Efficiency 7100 NOx gt NO Efficiency 85 NH3 gt NO Efficiency 85 N2 02 gt NO Efficiency lt 1 As be seen from the above reactions the calculation of the ammonia concentration overall calibration of the instrument must be done carefully if accurate ammonia concentrations are to be measured The calibration procedure is covered in Section 2 1 Special Considerations for Ammonia Measurement Ammonia is a difficult gas to measure due to its chemical characteristics Because of its large dipole moment the gas tends to adsorb on surfaces and diffuse into many materials The following precautions should be observed when designing an ammonia sampling system and connecting the M201A analyzer to the system Materials Do NOT use TEFLON tubing or fittings in contact with NH3 sample or span gas
16. polar 4 20mA isolated Analog Resolution 1 part in 2048 Status Option 12 Status Outputs Measurement Units b ug m3 1 As defined by USEPA 2 Defined as twice the zero noise level 3 At constant temperature and voltage 4 Bi polar 5 Electrical rating for CE Mark Compliance Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 2 0 CALIBRATION PROCEDURE Calibration of the M201A is done by first calibrating the TN and TNx channels with NO span gas diluted with zero air In the second phase of calibration ammonia span gas is introduced to measure the overall system efficiency for NH3 conversion Unlike NOx analysis the NH3 converter efficiency must be measured because it is considerably lower than 100 and may change as the converter ages If the instrument is configured as a basic model all zero span gasses are introduced through the sample port Ifthe Zero Span valves option or the ECO option is ordered the zero span gas is introduced through the zero span valves There are several ways of automating the calibration or span check process they are covered in Section 7 of the M200A manual After reviewing the procedure described below it should be simple to adapt the procedures in Section 7 to the M201A if necessary 2 1 Zero Span Calibration Basic Instrument Since the zero gas concentration is defined as 0 ppb it is not necessary to enter the expected zero value
17. ress to return to SAMPLE mode 16 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 The instrument is now fully calibrated 2 1 4 Channel Calibration Quality After the ammonia channel is calibrated via the converter efficiency parameter it is important to check the calibration by sampling the NH3 calibration gas and confirming that the instrument responds with the correct concentration In the above example the M201A should report 400 ppb NH3 concentration when measuring the 400 ppb NH3 span gas used 17 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 3 0 MAINTENANCE SCHEDULE 3 1 M201A Maintenance Schedule The maintenance requirements of the M201A are essentially like a standard M200A NOx analyzer Please refer to Table 8 1 in the M200A Operator Manual for the M200A maintenance schedule In Table 3 1 below there are the extra maintenance items required by the M201A Table 3 1 Preventative Maintenance Schedule Item Maintenance Interval Reference Section M501NH3 Converter Reaction Cell every 6 months Clean quarterly as necessary Section 3 2 Sect 9 3 8 Fig 8 3 in the M200A Manual AutoZero flow check Quarterly as needed Section 3 3 3 2 Maintaining the M501NH Converter The M501NH Converter is operated at very high temperature The center tube in the converter slowly oxidizes and requ
18. ssembly 28 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 016810200 017230000 018720000 021070000 022300000 024710000 024720000 024730000 024750000 046890000 046570100 CB0000001 CP0000014 DR0000002 FL0000001 FL0000003 FM0000004 HE0000007 HE0000017 HE0000019 HW0000020 HW0000036 HW0000150 KIT000019 KIT000021 KIT000036 KIT000041 KIT000051 KIT000058 KIT000059 KIT000067 KIT000103 KIT000110 M201A Spare Parts List cont Generator Assembly for M200A 200AH Low Output Dryer Material Drierite Welded Moly Conv Assy w Scrubber w valves PMT Pre amplifier Board Assembly DC Power Supply Board Tubing 6 1 8 CLR Tubing 6 1 8 BLK Tubing 6 1 4 BLK Tubing 6 1 4 TYGON M201A Manual Addendum Catalytic Converter Insert FUSE 1A Fuji Temperature Controller PMT Desiccant Baggies Sintered Filter Filter DFU Flow Meter 0 1000 cc Ceramic Heater 220W 60 Heater Reaction Cell 12W Heater MOLY Converter Spring Flow Control TFE Thread Tape 48 FT Clamp Hose Nylon 1 4 Replacement Cooler Assembly 100 200 Replacement PWR SW BD M100A 200A Retrofit Killer Retrofit Moly Valves M200A Rebuild Kit RX Cell Ambient M200 A 251 252 Leak Checker with Gauge Leak Checker without Gauge Retrofit M200A Rcell Rebuild Kit Replacement Welded Moly Cart Type J Tc Heater Repl Welded Moly Type J w o v
19. the sample pump and re check the flow 20 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 I SA d llill l 7 NV l Figure 1 201 Analyzer Block Diagram 21 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 NO SPAN GAS NH3 SPAN GAS ce 50 PSIG MAX emi ena N N Ta 1 F N w S Y ANE PRESSURE y AROARIN Nu FROM N B ZERO AIR MODULE SS TUBING SS TUBING EXHAUST SAMPLE TN OUT IN SS TUBING m UMBILICAL SS TUBING VENT TO VACCUM PUMP II TO CONV N Z Z UMBILICAL 02522 UMBILICAL CORD Figure 2 M201A External Pneumatic Connection Diagram with ECO External Calibrator Option 22 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 a le i bi Figure 3 M201A Pneumatic Diagram Basic 23 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 N 9 I i lt l y d i Dog 1 1 Figure 4 M201A Pneumatic Diagram Z S Option 24 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 u e 1 l WW 11 3 a A 1 ji l l Figure 5 201 Pneumatic Diagram External Calibrator
20. to stabilize at zero If the min instrument has recently been exposed to high levels of NH3 you may need to wait up to 2 hours for the instrument to return to zero 3 Press If you change your mind after pressing ZERO ZERO you can still press EXIT here without zeroing the instrument 4 Press Pressing ENTR actually changes the ENTR calculation equations 5 Press M201A returns to sampling This switches the EXIT ZS valves so that sample gas is coming in the sample port on the rear of the instrument Immediately after calibration data is not added to the DAS averages Since the zero gas concentration is defined as 0 ppb it is not necessary to enter the expected zero value The expected value of the span gas is entered into the instrument by the following procedure 13 Teledyne Model 201 Analyzer Instruction Manual 04689 Rev 1 Table 2 5 Enter the Expected Span Gas Concentrations Procedure This key sequence causes the M201A to prompt for the expected TNX concentration Enter the TNX span concentration value by pressing the key under each digit until the expected value is set This menu can also be entered from CALS or CALZ Press ENTR stores the expected TNX span value ENTR Now enter the expected TN span concentration as in step one Pressing ENTR stores the TN span value and returns the prompt to the CONC menu Returns instrument to SAMPLE mode 14 Teledyne Model 201
21. u Sample Port StepNo Comment M201A enters the calibrate mode Input NO span gas through the sample port Set the converter efficiency parameter to 1 0000 then CAL CONV SET Pess ENTR EXIT 2 20 min Wait for reading to stabilize at span value 3 Press SPAN If you change your mind after pressing SPAN you can still press EXIT here without spanning the instrument 4 Press ENTR Pressing ENTR actually changes the calculation equations and causes the instrument to read the TN TNx span concentrations Press M201A returns to sampling Immediatelv after calibration data is not added to the DAS averages 12 Teledyne API Model 201 Analyzer Instruction Manual 04689 Rev 1 2 1 1 Zero Span Calibration with Z S Valves or ECO Option The zero gas enters through the zero gas inlet port on the rear panel Make sure that the umbilical cord that makes the control connections between the analyzer and the converter is connected see Figure 2 below The zero gas valve can be activated by a variety of methods discussed in Section 7 of the M200A manual The example below will use the front panel keyboard to activate the valves Table 2 4 Zero Calibration Procedure Zero Gas from rear panel zero air inlet Comment The M201A enters the calibrate mode from sample mode The zero gas is supplied through the zero air inlet port on the rear panel 2 Wait 20 Wait for reading
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