AMS 3220 Transmitter User Manual
Contents
1. 16 7 2 1 The hidden button sanken ee en ede das eene eb oe da 16 8 ALIGNMENT OPERATING PARAMETER ANALYSING SYSTEM 17 8 1 ALIGNMENT MEASURING RANGES ANALYSING SYSTEM 17 8 2 SIGNAL OUTPUT 5d tee tert E el e S NEUSS RE RR HERE degrades 18 8 3 ALARMS ehe iet eroe ie ei aue 18 8 3 1 Signal Status Analyser System aiias tue eto teo a tette teet etre 18 6 3 2 Value Alaris oi hos eo ead ree esa 18 8 4 RELAYS ALIGNMENT CLEAR 5 19 9 CALIBRATION 22202445060 21 9 1 SELECTING CALIBRATION GASES e int cues ouverts as len als 21 9 1 1 Measuring Oxygen Concentration in Process Gas Samples esee 21 9 1 2 Measuring Oxygen Concentration for Controlling and 21 9 2 CALBRATION BROCEDURE e eh ete ae 21 9 2 1 Assigning Set Points and Calibration Points eese eene nemen nne 22 9 2 2 Start the Calibr tion eie ta teet Ire bua ATTE 23 9 2 5 Calibrating LO and HI s aan ote diei e P ore 23 9 2 4 Connect the Process Line Purging and Measuring 24 9 3 AUTOCAEIBRATION OPTIONAL nein E A MIS AR CO E 25 9 3 1 Assigning the Autocalibration eese eee2. 25 9 3 2 Execute nnns 26 933 Adjusting the Purge Timers e d f heiten eee ede 27 9 4 CALIBRATION ERRORS u P 28 10 OPTIONS esnnnsnnnsssnnnsssnnnenen 29 10 1 SERIALINTERF CERS232 u a san Ree s e nee e P e RS RR SERO HN RA YN Ib ente e RE TRE VERRE V n 29 10 2 MAGNETIC SOLENOID CONTR OL 1 5 esee tede oen ee ege eei E e re 37 11 ERROR MESSAGES 4 4 4 40 4 38 12 SERVICE 39 IX EGIT 39 12 2 EXCHANGE OF THE SENSOR LIFETIME cesses 39 12 3 PROBE MAINTENANCE Ss ne nie RR IR NE UR e EE ANE RICE RECON 39 13 MESSAGES 7 40 14 APPENDIX 7 4 4 4 23 4 5 42 Version 07 2010 Instruction Manual Page 3 AMS 3220 ZrO Oxygen Analyser 1 Electronic Controller AMS 3220 The electronic controller AMS 3220 is the supply control and evaluation unit for all AMS ZrO probes It is T V approved for large boilers in power plants for industrial boilers and furnaces for waste incinerators and for crematoria The unit can be delivered in several housing models available also for CENELEC zone 1 operating The measuring range for flue gas appli
3. AMS 3220 EEx e terminal box probe with terminal terminal 1 terminal 6 heating terminal 4 terminal 2 terminal 5 bridged over to terminal 6 terminal 3 terminal 4 bridged over to terminal 3 terminal 4 terminal 3 heating terminal 3 terminal 5 terminal 2 signal terminal 1 terminal 6 terminal 1 signal terminal 2 6 25211 2 4 1 Sensor 3 M 2 Heizung EEx Electronic controller terminal EEx approved probe AMS 3220 box 3210 860 150 Fig 3 Electrical connection between electronic controller AMS 3220 and ZrO probe 3210 860 150 Version 07 2010 Instruction Manual Page 12 AMS 3220 ZrO Oxygen Analyser 5 3 Cable Lengths and Cable Cross Sections To connect the electronic controller to the measuring probe shielded conductors have to be used The maximum load for the conductors is 48V 3A For cable lengths up to 150 m a joint cable with multiple conductors can be used for signal and heating Above 150 m cable length usually the conductors for signal and heating should be routed separately 1 Cable cross sections for length up to 150 m cable length 1 minimum cross section up to 40m 6x 0 75 mm from 40 to 60m 6x 1 0 mm from 60 to 90m 1 5 mm from 90 to 150m 6x2 5 mm 2 Cable cross sections for cables longer than 150 metres Basically a six core cable has to be used with the core assignment as follows 2 cores for the sensor signal 2 cores for the temperature
4. aS ae rn 19 DISABEISD 19 AUTO RESET 19 DEEAYED uei II NIRE 19 ALARM2 BYSTSB rel tette etti EA 15 19 PN LIRE OTT LIMITEM 20 Lower row CHANGE 2 ND LINE 15 16 NOTHING 552 Ote bye dee E ES a deed re 16 SENSOR VOLEEBA E tormenti distet tese s 16 HEATER RESISTANGE iei tedio nnt t v ce S 16 HEATER POWER NE nocet ee a el eee eo Ee se se nes 16 ADARMS ORCI RII DIN NEN IE S 16 Calibration CAL LOW HEHE 96 siete ie Rada tetti vr ee eoe UE 15 22 CALL HIGH 222506 te oerte e n 15 22 PUT LO GAS BAH ANM 23 PRESS F TO CONTINUE PUT HI GAS FH Go t E leet ui deed ee ed tt deat cM n 23 PRESS F TO CONTINUE CATs VHEHE 90 ete ette irte Cet eie Hasc 24 26 PURGING ttt s CAILxxxx900 HEHE 96 eei ener 24 26 SAMPLING ttt s Version 07 2010 Instruction Manual Page 40 AMS 3220 ZrO Oxygen Analyser PUT PR GAS EHE ri e e eed 24 PRESS F TO CONTINUE PROC GAS I och cases
5. The following messages appear successively on the display CAL xx xx PPM PPM Index xx xx pre assigned calibration value PURGING ttt current measuring value ttt purging time left in seconds CAL xx xx PPM PPM Index xx xx pre assigned calibration value SAMPLING ttt current measuring value ttt sampling time left in seconds The value in the upper row of the display indicates the calibration mode and the pre assigned concentration value The latter must correspond with the measuring value of the calibration gas currently used after the purging time has run out Otherwise the autocalibration procedure has to be stopped and the calibration procedure following Chapter 9 2 must be repeated After this start the autocalibration mode manually through pressing again the two cursor but tons simultaneously Note After finishing the PURGING phase the indicated measuring value should be constant The electronic controller controls the autocalibration procedure internally possible faults are indicated on the display Version 07 2010 Instruction Manual Page 27 AMS 3220 ZrO Oxygen Analyser When the Autocalibration is terminated successfully the adjacent message appears on the display PROC GAS PPM current measuring value PURGING ttt ttt purging time left in seconds This menu indicates that the ZrO probe is now purged with process gas When the pu
6. 3 Choice for the 2 9 LINE DISPLAYS No Display Reading Description Function 1 NOTHING 2 line not visible E 2 SENSOR VOLTAGE Sensor signal mV 3 3 HEATER RESISTANCE Current resistance of the sensor heater O 4 HEATERPOWER Current heater power OO E s ALARMS Value alarms 1 and or 2ifanyactive 000000 72 Parameter Mode AMS 3220 To extend the already described variety of parameter selection to operate the AMS 3220 a hidden button has been built in 7 21 The hidden button To locate the hidden button please check Chapter 4 of this manual for the front view of the electronic controller This particular button is not directly visible on the front panel as indicated by the dashed lines in the diagram It is placed just 3 cm to the right and parallel to the cursor Pressing the hidden button leads to the lower programming level of the control menu Chang ing the alignment of the parameter through the hidden button affects the entire mode of op eration of the electronic controller AMS 3220 and thus may result in changing the complete production system Hence only authorised personal should be permitted to operate the hidden button Version 07 2010 Instruction Manual Page 17 AMS 3220 ZrO Oxygen Analyser After completing the alignment press the hidden button again to move to the upper level thus protecting the analyser against unintentiona
7. 3220 T V approval for large boilers in power plants for industrial boilers and furnaces for waste incinerators and for crematoria certification no 936 807023 A dated 08 14 2000 Inconnection with the appropriate pneumatic units for automatic calibration it of fers the AUTOCAL routine for all AMS ZrO probes e For the EEx d probe AMS 3110 150 an EEx d housing for the electronic unit can be offered Depending upon the application either an EEx IIC or an EEx d IIB housing is available for operating in CENELEC zone 1 and 2 The housing of the electronic unit is made out of painted steel sheet the enclosure complies with IP65 and warrants an improved dissipation of the heat produced e Signal from the sensor and heating power are galvanically isolated to keep away wandering signals Two galvanically separated signal outputs 0 4 20 mA are standard e Digital interface RS232 CAN bus interface is optionally available An improved A D converter provides better resolution and the continuous meas urement from 25 vol down to less than 0 1 vol Oxygen Version 07 2010 Instruction Manual Page 4 AMS 3220 ZrO Oxygen Analyser 2 ZrO Probes for the Measurement of Oxygen in Flue Gases The wide range of applications of ZrO probes for the measurement of oxygen requires the adaptation of this measuring system to varying process conditions like temperature aggres sive flue gas and even hazardous areas A s
8. 5_ppm_ lt CR gt E Executed 0000 no error 81 Calibration Cal Low 11 5 Value for Cal Low Gas ppm dimension CR Telegram end Spacing The calibration needs approx 100 Seconds and may be aborted by M 80 CR at any time Version 07 2010 Instruction Manual Page 36 AMS 3220 ZrO Oxygen Analyser 10 2 Magnetic Solenoid Control The magnetic solenoid control board for the analysing system AMS 3220 is placed in a specific aluminium made box dimensions 120x220x80 mm To connect electronic controller and solenoid control board a 1 1 connection line has to be sup plied as described in the appendix Voltage supply 115 Vac or 230V ac check your order form cen ie c L L reis terminal plug terminal terminal terminal terminal block 1 in block 2 block 3 block 4 block 5 Fig 4 Power board for magnetic solenoid control The terminals on the power board are to assign as follows see AMS Drawing No 00 3220 000 43 A3 at the appendix Terminal block Connection 1 voltage supply 115V ac or 230V ac power 20 2 magnetic solenoid valve switching over measuring calibrating MV1 3 magnetic solenoid valve switching over calibration gas HIGH air calibration gas LOW MV2 4 5 free for optional control Note Connecting the terminals one should regard the proper polarity concerning the supply lines for the magnetic solenoid valves The latter are
9. Ohm Field 5 is transmitted on demand only and may be omitted Maximum length is 20 Bytes Telegram End CR Instruction Manual Page 34 AMS 3220 ZrO Oxygen Analyser EXAMPLES Remark In the following a spacing is indicated by 1 Request from Master Answer from Instrument G 02 CR T 0000 02 20 95 002 CR G Send Data T Data sent 02 Oxygen 0000 HEX no error CR Telegram end 02 Oxygen 20 95 Oxygen Value 02 Dimension CR Telegram end Or if the instrument is not o k par example X 5000 02 17 5 7002 CR X Error from Instrument 5000 Temperature error heater broken 02 Oxygen 17 5 Sauerstoffwert 02 Dimension CR Telegram end Version 07 2010 Instruction Manual AMS 3220 ZrO Oxygen Analyser 2 Command from Master 3 S 11 12 34 CR S Set Parameter 11 OFFSET 12 34 new Value for Offset CR Telegram end Spacing Command from Master M 81 CR M Command Make 81 Calibration Cal Low lt CR gt Telegram end Spacing Page 35 Answer form Instrument Status o k L 0000 11 12 34 CR L Parameter changed 0000 no error 11 OFFSET 12 34 new value for Offset CR Telegram end Spacing Status not o k could not change parameter X 0001 11 gt gt X Malfunction 0001 Transmission error 11 OFFSET CR Telegram end gt Spacing Answer form Instrument Status o k E_0000_81_11
10. data sent optional field for supplementary data Telegram End lt CR gt Telegram from Master to Instrument S_11_ 12 3456_ lt CR gt S Field 11 3 Field 12 3456 4 Field CR 6 Field Telegram from Instrument to Master L 0000 11 12 3456 CR L 1 Field 0000 2 Field 11 2 Field 12 3456 lt 4 Field CR 6 Field Description of the Fields 1 Field Definition of the meaning of the telegram Version 07 2010 From Master to Instrument G 5 M Get Master requests Instrument to send data Set Master requests Instrument to change a parameter Make Master requests Instrument to start a procedure e g calibration From Instrument to Master Answer to G Instrument sends data Answer to S Instrument confirms changed parameter Answer to M Instrument confirms execution of procedure this code indicates that the self checking procedures in the instrument have detected an error or a malfunction such errors or malfunctions are stored in flags and sent in Field 2 of the answer telegram from the instrument to the master 2 Field Instruction Manual Page 31 AMS 3220 ZrO Oxygen Analyser Status Field 16 Bit Error Flags gt for messages from the instrument to the master only Coding is bit by bit 0 OK 1 Error B0 Communication Error RS232 frame error timeout Bl B2 B3 Unknown Command B4 Parameter Error Parameter outside a
11. signal check current voltage 2 cores for the heater voltage The dimensions of the cross sections for the signal and heater conductors required should be as follows The sensor signal conductors terminal no 5 and 6 of the electronic controller AMS 3220 must show a cross section of at least 0 5mm regardless of the cable length Lar ger cross sections do not affect the measurement The temperature signal conductors terminal no 2 and 3 of the electronic controller AMS 3220 must show a cross section of at least 0 5mm regardless of the cable length Larger cross sections do not affect the measurement e The cross section of the heater conductor terminal no 1 and 4 of the electronic controller AMS 3220 has to be calculated as described below In any case it is impor tant to observe that the overall resistance of the heating loop excluding the sensor does not exceed 3 2 Ohm Version 07 2010 Instruction Manual Page 13 AMS 3220 ZrO Oxygen Analyser How to calculate the cross section for the heater cores example only Assume a cable with 4mm cross section and 4 7 Ohm km core resistance Which cable length fits to this 4 7 Ohm km core results in 9 4 Ohm km connection The connection comprises two cores Prescription AMS max permissible resistance 3 2 Ohm 3 20hm 0 340 km 340m 9 4Ohm km maximum cable length The cable cross section req
12. use the cursor key to adjust the value required Not pressing any key on the control panel within 5 seconds puts the electronic controller automatically into the measuring mode regarding the parameters just set through the dis play Warning Faulty parameters will also be accepted from the electronic controller without any confirmation of the apparent mistake Tab 2 Standard alignments factory delivery Measurement Mode Assignment Mode Display Reading Value Display Reading Value CAL LOW 96 2 00 ALARM 1 MODE Auto Reset CAL HIGH 2995 ALARMIHYST rel s Hs ALARM 2 jAutoRest m ALARM 2 HYST rel 1 ALARM 95 RHEATER ALARM 1 TYPE ug Hee PIGH ow RANGE HI 25 00 ALARM 2 5 mon M 2 TYPE HIGH ee da Porc H A For all Operation Modes Display Reading Value CHANGE 27 LINE Nothing NO Version 07 2010 Instruction Manual Page 16 AMS 3220 ZrO Oxygen Analyser 7 1 2 Alignment Sensor Signal Heater Power and Value Alarms Through the lower display row it can be aligned as follows Press or toggle the F button to obtain this reading CHANGE 2 LINE YES assignment of the 2 line can be changed YES NO NO assignment of the 2 line cannot be changed To call on YES or NO press the cursor button The content of the 2 line must be selected from the list shown below through the cursor buttons Tab
13. 1 000 probe probe for high temperatures gas temperature 500 C 500 C 1750 C 1100 C 500 C 1100 C 450 C maximum protection IP65 IP65 IP65 IP65 IP65 EExd Il B H2 IP65 EEx d IIB H2 IP 44 time constant t time lt 2s 10s 28S 10s 5s lt 20 5 bs 20s bs 20s 5s 20s 28S 10s position any but to be adjusted downwards any but to be adjusted downwards depending from sample tube material recommended vertical suspended up to 900 C any adjusted downwards gt 900 C vertical suspended any but to be adjusted downwards any but to be adjusted downwards any but to be adjusted downwards weight at length 6 5 kg 1000 mm 3 kg 500 mm 6 5 kg 1000 mm 7 kg 1000 mm 10 kg 500 mm 15 kg 1000 mm 0 3 kg dust content beyond 5 g m a shield made of stainless steel is supplied to protect the sinter filter beyond 5 g m a shield made of stainless steel is supplied to protect the sinter filter beyond 20 g m a protection shield made of stainless steel is recommended up to 20 g m wet dust not allowed beyond 5 g m a shield made of stainless steel is supplied to protect the sinter filter beyond 20 g m a protection shield made of stainless steel is recommended beyond 5 g m a shield made of stainless steel is supplied to protect the sinter filter sa
14. E HH THHHE end of scale value in vol output 20 mA Through the cursor button the end of scale value is freely eligible After completing the assignment of the measuring range it is recommended to move to the upper programming level by pressing the hidden button again If the hidden button or any other button is not pressed within 10 minutes time the electronic controller automatically returns to the main level Warning Faulty parameters will also be accepted from the electronic controller without any con firmation of the apparent mistake Version 07 2010 Instruction Manual Page 18 AMS 3220 ZrO Oxygen Analyser 82 Signal Output Analogue output 1 0 4 20 mA for Oxygen concentration programmable signal output electrically isolated Analogue output 2 Option 0 4 20 mA scale custom assigned not programmable signal output galvanically isolated 8 3 Alarms The analysing system is equipped with two different kinds of messages 1 signal status analyser system 2 value alarms 8 3 1 Signal Status Analyser System The analyser system features a relay controlled status signal For the technical data of the relay see Chapter 3 and 5 of this manual The status signal monitors the functions as follows warm up phase circuit break sensor heating missing sensor heating circuit power failure The relay wiring is FAIL SAFE 8 3 2 Value Alarms The value alarms 1 and 2 are freely configurable A signal is trig
15. Instruction Manual Analyser AMS 3220 for AMS ZrO Probes AMS Analysen Mess und Systemtechnik GmbH Analysen Mess und Industriestrasse 9 A S Systemtechnik D 69234 Dielheim Tel 49 6222 78877 0 e mail info ams dielheim com Fax 449 6222 7887 1 20 Web site www ams dielheim com Instruction Manual Page 2 AMS 3220 ZrO Oxygen Analyser Table of Contents 1 ELECTRONIC CONTROLLER 8320 3 2 ZRO2 PROBES FOR THE MEASUREMENT OF OXYGEN IN FLUE GASES 4 3 TECHNICAL DATA ELECTRONIC CONTROLLER AMS 3220 5 4 DIMENSIONAL DRAWING AND FRONT VIEW OF THE ELECTRONIC CONTROLLER AMS 3220 1 11 11 1 1 1 000 Lesser 7 5 ELECTRIC CONNECTION FOR ELECTRONIC CONTROLLER AMS 3220 8 5 1 TERMINAL ASSIGNMENTS 8 5 2 INTERNAL WIRING OF ELECTRONIC CONTROLLER AMS 3220 AND 9 5 3 CABLE LENGTHS AND CABLE 55 5 6 12 6 PREPARATIONS FOR START UP 4 14 7 MEASURING MODE AND PARAMETER MODE 7 1 15 7 1 MEASURING MODE AMS 3220 ete mestre teet ee Pent bt ge ed tete gue aeree 15 7 1 1 Assignment of the Operation Parameter AMS 3220 eene 15 7 1 2 Alignment Sensor Signal Heater Power and Value eese 16 7 2 PARAMETER MODE AMS 3220 Ere ETERNI
16. brackets on the display Wait until measured Oxygen con centration is stable Version 07 2010 Instruction Manual Page 24 AMS 3220 ZrO Oxygen Analyser Press F button and the following messages appear successively CAL xx xx 96 PURGING ttts Index XX xx pre aligned calibration gas concentration 4 measured calibration gas concentration ttt s counter for purging time left CAL xx xx ftit 96 SAMPLING ttts Index pre aligned calibration gas concentra tion measured calibration gas concentration ttt s counter for sampling time left Once this measuring sequence is finished the analyser automatically calculates and stores the calibration curve The following message appears on the display PUT PR GAS HHHH 9 PRESS F IF STABLE 9 2 4 Connect the Process Line Purging and Measuring Connect the analyser system to the process line Press the F button the adjacent message appears on the display PROC GAS Index measured Oxygen concentration PURGING ttts ttt left over The measuring procedure for the process gas either starts automatically after the purging time is finished or after pressing the F button Important IV Terminating the purging phase before the purging time has run out may cause unreliable meas uring values for a short period of time since the measuring cell must align to the current Oxy gen concentration Versi
17. cations covers 0 1 25 vol oxygen permitting the operator to adjust to the process values Considering process applications measuring ranges from 0 1 vol to 100 vol can be applied The calibration limits will be laid down in the E PROM of the controller corre spondingly Programming and controlling the entire measuring system will be executed with only three push buttons one for the operation mode two for the cursor A display featuring two LCD rows indicates the measuring value and user fed data as well as the operation directions in plain text messages The programming level is accessible only for authorised personal through a specific service mode The self diagnostics of the controller with the corresponding fault signals reduce the usu ally time consuming monitoring to a reasonable extent instrument parameters be comfortably set at the control unit the calibration and alarm data the assignment of the display lines as well as the two analogue outputs 0 4 20 mA to the current measurement limits Particularly important regarding the reliability of the O2 measurement is of course the iden tification and hence the error message while calibrating e The stability of the measuring signal during calibration and the plausibility of the calculated correction data are subject to the continuous check from the electronic controller Some additional functions have been integrated into the recently redesigned controller AMS
18. designed for 24 Vpc if not described otherwise Note Pay attention to the marks engraved on the board next to the terminals while assigning voltage supply and magnetic solenoid valves 11 Error Messages Version 07 2010 Instruction Manual Page 37 AMS 3220 ZrO Oxygen Analyser HEATER ALARM HEATER SHORTCUT Cause Short circuit in probe heating line terminal 1 and 4 wall mountable housing error correction test the sensor heating lines for short circuit probe heating line resistance is approximately 2 2 at room temperature and approx 9 Q at operating temperature HEATER ALARM HEATER MISSING Cause Broken or not connected probe heating line terminal 1 and 4 wall mountable housing error correction I test terminal for connecting cables Or II check probe heating lines for a break probe heating line resistance is approximately 2 2 at room temperature and approx 942 at operating temperature e FACT DEF LOADED PRESS F TO START Cause e faulty EEPROM e faults causing a RESET e g a short circuit in the probe heating line during normal operation error correction press F button e if the error message is not cleared the EEPROM is faulty and must be exchanged e if the error message is cleared the EPROM is ok and the factory supplied set tings will be loaded again after the F button has been pressed e alarms and calibration points must be realigned e re calibration at
19. ection list appears ALARM 1 MODE alarm modus indicated e Through the cursor buttons one of the modes listed below may be chosen HOLD MANUAL RESET The alarm holds itself Measuring values above or below the alarm threshold causes the flashing of the message AL 1 in the lower row of the display if it was assigned before To clear the message press the cursor button 7 the message AL 2 will only be cleared by pressing the cursor button DISABLED The alarm is switched off AUTO RESET The alarm clears automatically Measuring values above or below the alarm thresh old are indicated as an alarm message on the lower row of the display but are then automatically reset message cleared if assigned before To assign a particular deviation value permitted select AUTO RESET as described above and press the F button again The adjacent message appears on the display AL 1 HYST rel difference to the alarm value in rel Version 07 2010 The value of the deviation can be selected through the cursor button from 0 1 10 relative to the alarm threshold DELAYED The alarm clears itself Measuring values above or below the alarm threshold are indicated as an alarm message on the lower row of the display but are then reset message cleared after a pre set delay time if assigned before To assign a particular deviation value permitted select AUTO RESET a
20. er may either request those data to be sent or he may request to set new values S Procedures 80 81 82 are started by M The Oxygen concentration 02 is transmitted as mean value since the last command G 02 If no request to send the Oxygen concentration is received for more than 15 minutes the transmitter starts a new averaging other values are transmitted as the actual values whenever the re4spective command with a closing CR is received by the transmitter Version 07 2010 4 Field 50 Field 6 Field Version 07 2010 Instruction Manual Page 33 AMS 3220 ZrO Oxygen Analyser Data In this field the data as characterised in field 3 are listed The length and the format of the field is determined by the type of the data The maximum length is 50 Bytes Format 02 Oxygen floating point Vol o ppm 03 Sensor Signal floating point mV 04 Heater resistance floating point Ohm actual value 12 Status 0 OPERATING 1 START UP 2 PREHEATING 3 SETUP MODE 4 CALIBRATION 5 6 SYSTEM ALARM 11 OFFSET floating point 12 SPAN floating point dimensionslos 13 Heater resistance floating point Ohm programmed value 21 TAG Number string 22 Application string 31 Cal Gas Low floating point Vol 32 Cal Gas High floating point Vol Supplementary Data This field contains supplementary data for field 4 e g the dimensions or units of the measured values Vol ppm mV
21. gered when the upper or lower limit marks are exceeded respectively The alarm signal is transferred via the corresponding relay to the row of terminals on the rear panel of the electronic controller Additionally it is indicated on the display provided that this has been properly assigned according to Chapter 7 1 2 of this manual For the technical data and wiring of the alarms and the corresponding relays compare Chapter 3 and 5 Alignment of the value alarms The value alarms are independent from each other as well as from the measuring range Each alarm may be assigned individually to a value in the range 0 2 25 vol To align the alarm 1 follow the instructions listed below alarm 2 has to be aligned corre spondingly Press the F button until the following selection list appears ALARM 1 HH HH alarm limit in vol Os e Through the cursor buttons select the proper alarm value Push the F button until the following display appears Version 07 2010 Instruction Manual Page 19 AMS 3220 ZrO Oxygen Analyser ALARM 1 TYPE HIGH Low e Through the cursor buttons select the type of alarm HIGH or LOW e Not pressing any button within 5 minutes time automatically puts the instrument back into the measuring mode 8 4 Relays Alignment Clear Alarms Press the hidden button how to locate this button compare Chapter 4 of this manual e Press the F button until the following sel
22. hort response time and durability of the sensor are further major customer demands In addition however ease of use reliability and minimum maintenance of the analysis system are important design features Twenty years of experience in system technology enable AMS Analysen Mess und Sys temtechnik to provide ZrO probes with these features already built in while offering the instruments at an attractive price The oxygen measuring units are used for the determination of the oxygen concentration in flue gases of incinerators or in pure industrial gases covering the temperature range from 20 C to 1750 C Since the Zirconia measuring cell is located in the flue gas flow the measurement takes place directly in situ allowing the sample extraction and conditioning system to be omit ted Specific applications demand probes aligned to the particular process environment e g to hazardous areas classified as CENELEC zone 1 or 2 to residue free combustion processes using natural gas or to flue gas ducts with small diameters System features e Specially AMS designed sensor for flue gas applications operator replaceable TUV approval for large boilers in power plants industrial furnaces and for waste incinerators and for crematoria Gas wetted parts made of stainless steel other materials are available Range of probe lengths from 150 mm to 3000 mm Gas temperatures up to 1750 C EEx d II B H probe for CENELEC zone 1 To operate the Z
23. ibration sequence does not affect the performance of the analysing sys tem Possible calibration errors indicated on the display A CALIBRATION ERROR 10 PRESS F TO CONTINUE Cause This message may be caused by inconsistent measuring values due to inadmissible variations of the measuring signal Possible sources Gas flow in the calibration gas line is too low e Leaking calibration gas line e Pressure variations in the calibration gas line Gas flow the flue gas duct is too high e Faulty sensor B CALIBRATION ERROR 11 PRESS F TO CONTINUE Cause This message may be caused from implausible calibration results Possible errors No gas flow in the calibration gas line ncorrect calibration parameters Version 07 2010 Instruction Manual Page 29 AMS 3220 ZrO Oxygen Analyser 10 Options 10 1 Serial Interface RS232 The electronic controller can be optionally equipped with a serial interface RS232 to transfer the data to a remote computer through a specific evaluation programme or just a simple terminal programme Note If the measuring value indicated changes while connecting the control cable for the magnetic solenoid valves a ground loop may be the cause To correct this fault detach the cable shield at one end of the control cable In order to connect the electronic controller and the remote computer via a serial interface RS232 follow these instructions 1 The connecting line m
24. l or unauthorised operation If the hidden button or any other button is not pressed within 10 minutes time the electronic controller automatically returns to the main level Continuously moving up and down does not affect the performance of the analyser as far as no alterations have been carried out Before starting to operate the hidden button and before changing the alignments or as signments in the electronic controller it is strongly recommended to read the instruction manual very carefully and to act only as advised Otherwise severe personal injury and or substantial damage to property can occur Warning Faulty parameters will also be accepted from the electronic controller without any confirmation of the apparent mistake 8 Alignment Operating Parameter Analysing System 8 31 Alignment Measuring Ranges Analysing System The electronic controller features are freely programmable 0 4 20 mA analogue output ana logue output 1 see 8 2 of this manual To assign the analogue output 0 4 20 mA to the measuring range required follow these in structions e press the hidden button see Chapter 4 of this manual e toggle the F button until the following list appears on the display RANGE LO THHE d THHHE start of scale value in vol output 0 4 mA The start of scale value is freely eligible through the cursor buttons e toggle the F button until the following list appears on the display RANGE HI TH
25. llowed range B5 Command could not be executed B6 B7 B8 After poweron Sensor has not yet reached the operating temperature B9 Instrument is busy with a calibration procedure B10 B11 B12 Sensor Temperature Error B13 B14 Heater or heater line broken B15 Heater shortcut Format for transmission HEX Examples HEX Binary No Error 0000 00000000 00000000 Heating up phase 0100 00000001 00000000 Temp Error heater broken 5000 01010000 00000000 Version 07 2010 3 Field 00 01 02 03 04 10 11 12 13 21 22 31 32 80 81 82 Instruction Manual Page 32 AMS 3220 ZrO Oxygen Analyser Characterisation of Data transmitted 2 digit number from 00 to 99 Reservied Instrument number Oxygen Concentration Value Sensor Signal Heater Resistance actual value Sensor Temperature Status Signal Sensor OFFSET Sensor signal mV in air Sensor SPAN Sensor signal change mV for an Oxygen concentration change of 1 10 Heater Resistance programmed value Option Tag Number by user Option Application user Oxygen concentration for lower calibration point Cal Low Oxygen concentration for upper calibration point Cal High Abort calibration Start Calibration Cal Low Start Calibration Cal High 9 to 99 reserved for future demand 01 to 10 11 to 90 Master may only request the instrument to send those data Mast
26. lues 1 vol 0 1 vol for standard measuring range 0 5 rel for range 25 vol to 10 vol O 0 05 vol for range 10 vol to 0 2 vol 96 rel for standard measuring range flue gas applications alphanumeric display with 2 x 20 digits sensor voltage heating cartridge resistance limits analogue output 1 0 4 20 mA galvanically isolated max load 600 Ohm freely programmable from 0 1 to 25 vol O analogue output 2 Option 0 4 20 mA galvanically isolated max load 600 Ohm not programmable custom scaled signal input signal outputs heating power for the sensor 2 potential free relay contacts max 60 0 5 A freely programmable for the entire measuring range for limits as well as for fast hold potential free relay contact max 60 V 0 5 A e g for sensor voltage heating cartridge RS232 TUV approval for large boilers in power plants for industrial boilers and furnaces for waste incinerators and for crematoria CE 1996 as well as according to electromagnetic compatibility standards and safety rules for electrical instruments wall mounting case made out of painted steel sheet IP 65 19 plug in desktop C or EEx dII B housing 300 x 400 x 120 mm WxHXxD for IP 65 housing approx 9 kg 5 C to 45 C 24 115 230 V AC 500r 60 Hz Tab 1 Technical Data ZrO Probes ZrO probe 3211 500 3211 500L 3211 600 3211 700 EEx approved EEx approved 321
27. mple flow probe heating time beyond 20 m s a shield made of stainless steel is supplied to protect the sinter filter 10 minutes beyond 20 m s a shield made of stainless steel is supplied to protect the sinter filter 10 minutes no limitations 10 minutes higher as 5 m s 10 minutes beyond 20 m s a shield made of stainless steel is supplied to protect the sinter filter 10 minutes no limitations 10 minutes beyond 20 m s a shield made of stainless steel is supplied to protect the sinter filter 10 minutes Page 7 Instruction Manual AMS 3220 ZrO Oxygen Analyser 4 Dimensional Drawing and Front View of the Electronic Controller AMS 3220 327 2 295 9 Display Version 07 2010 Instruction Manual Page 8 AMS 3220 ZrO Oxygen Analyser 5 Electric Connection for Electronic Controller AMS 3220 5 1 Terminal Assignments This Chapter only refers to the wall mounted housing for the AMS 3220 IP65 Please check the appendix for different housing models 8 18 Fig 2 Terminal assignments wall mounted housing IP65 Terminal Assignment 10 11 12 13 14 15 16 17 18 Connecting Terminals for the ZrO Probe Heater voltage check current voltage check current voltage Heater voltage Sensor signal Sensor signal Con
28. necting Terminals for Alarm Relays Outputs Alarm 1 NC SPDT relay contacts potential free NO max load 60V 0 5A resistive load C Alarm 2 NC SPDT relay contacts potential free NO max load 60V 0 5A resistive load C Status signal ready yes no NC SPDT relay contacts potential free NO max load 60V 0 5A Connecting Terminals for Digital Interface RS 232 OPTION des RS 232 interface no handshake wiring GND see also paragraph 6 Version 07 2010 Instruction Manual Page 9 AMS 3220 ZrO Oxygen Analyser Connecting Terminals for Analogue Outputs 19 Current Output 1 0 4 20mA max 7000 20 Current Output 1 galvanically isolated 21 Current Output 2 0 4 to 20 mA max 700Q 22 Current Output 2 galvanically isolated Option Connecting Terminals for Power Supply L N PE Power supply 230V Ac 1A 115 Vac lt lA resp 24Vac lt 2 5A see your order 5 22 Internal Wiring of Electronic Controller AMS 3220 and ZrO Probe Attention The terminal numbers listed below refer to the wall mounted housing and to the ZrO gt probe as ordered For different terminal assignments please check the ap pendix The electronic controller must be connected to the proper measuring probe see your order form as follows 1 ZrO Probe 3211 000 AMS 3220 probe with ready made cable pins terminal 1 sensor heating colour white terminal 2 terminal 3 terminal 4 se
29. ns that solid and largely cor rect measuring values can be expected III Regarding the terminal assignment see diagram in Chapter 5 of this manual all alarms required must be connected to the proper terminal as well as the analogue output if needed IV Option Connect the serial interface RS232 in accordance to the terminal diagram see Chapter 5 of this manual V Option Connect the magnetic solenoid control according to the terminal diagram see the corresponding diagram in the appendix of this manual VI If required set the customer prescribed parameters according to Chapter 7 of this man ual Version 07 2010 Instruction Manual AMS 3220 ZrO Oxygen Analyser Page 15 7 Measuring Mode and Parameter Mode of the Electronic Controller AMS 3220 7 1 Measuring Mode AMS 3220 The measuring value in vol units is indicated in the upper row of the display like the read ings for the operation parameters see 77 1 1 Further information concerning the status of the device can be user assigned to the lower row as described in Z7 1 2 outputs and feedbacks are active 7 1 1 Assignment of the Operation Parameter AMS 3220 The assignment of the operation parameters must follow this sequence e Press or toggle the F button to indicate the parameter required e Through the cursor buttons the factory given alignments can be changed Repeat pressing the F button to indicate the parameters successively
30. nsor heater colour white terminal 5 sensor colour black terminal 6 sensor colour grey Version 07 2010 Instruction Manual Page 10 AMS 3220 ZrO Oxygen Analyser 2 ZrO2 Probes 3211 500 600 700 AMS 3220 probe with Harting plug in terminal 1 sensor heating terminal 6 terminal 2 check current voltage terminal 5 terminal 3 check current voltage terminal 4 terminal 4 sensor heating terminal 3 terminal 5 sensor terminal 1 terminal 6 sensor terminal 2 L ET sensor O 4 3 3 4 chec gt gt 5 2 gt Heater tage i Analyser AMS 3220 Probe 3211 500 600 700 Electronic Version 07 2010 Instruction Manual Page 11 AMS 3220 ZrO Oxygen Analyser 3 ZrO Probe 3210 860 150 EEx d H2 and High Temperature Probe with EEx d Certification In classified areas the electrical connection between the electronic controller and the ZrO probe must be routed from an extra BEx e approved terminal box not included in the standard delivery but it can be ordered from AMS It is important to provide the EEx e approved box in the immediate vicinity of the measuring probe permissible distance max 2 m
31. on 07 2010 Instruction Manual Page 25 AMS 3220 ZrO Oxygen Analyser 9 3 Autocalibration optional The autocalibration mode calibrates the analyser system automatically within pre selectable time periods The autocalibration procedure is accessible only if the corresponding magnetic solenoid valves and the control system are supplied To connect the electronic controller to the magnetic sole noid valves through a particular cable see the appendix of this manual Note If the measuring value indicated changes while connecting the control cable for the magnetic solenoid valves a ground loop may be the cause To correct this fault detach the cable shield at one end of the control cable 9 3 1 Assigning the Autocalibration autocalibration mode of the electronic controller is deactivated when delivered To align the autocalibration just follow the instructions as listed below Press or toggle the F button until the following message appears on the display AUTO CAL TYPE i ok ok sete ok ok so KEE selection list e press the cursor buttons to select the calibration sequence as listed below HIGH LOW Start CAL HIGH calibration first then go on with LOW HIGH Start CAL LOW calibration first then go on with CAL HIGH This sequence is recommended by the supplier HIGH Only CAL HIGH calibration will be executed LOW Only CAL LOW calibration will be exec
32. ormance The regular ageing of the sensor can be compensated for some time through calibrations re peated periodically Overused sensors exhibit faulty calibration values indicating the need for replacement 12 3Probe Maintenance Service for the probe is restricted to cleaning from deposits or pollution These effects are sig nalled through delayed response time and extended time needed for stable measuring values Version 07 2010 Instruction Manual Page 39 AMS 3220 ZrO Oxygen Analyser 13 Messages Basics R HEATER EHEN LS 15 RANGE T etn 15 17 RANGE AU FH FHF 96 iiit eie ciere eden tees 15 17 Alarms ALARM JT JHHES 95 opea le EE Ie 15 19 AARM IDs T IC ELM 15 19 HIGH ALARM MODE noie a ee 15 18 HOLD MANUALE tete ee kan have aul satus 19 DISAB AR a Aix statis el Ads RDAs hac ad 19 8 20 0020 0 19 JB AVI DENM LE PE E 19 ALARM EHYST Heeb jannn eot tees tente nte e tl ED eee ee 15 19 ATEIEDELAYCHR RAT DE 20 ALARM 2 PHRF a eie tete aiuti Vtde dae as PU ene od deve n 15 19 ATARM 2 PYPE ES 15 19 Low ALARM 22 MODE hnelt 15 19 HOED MANUAIRESET
33. rO probes a reference gas as well as a test gas for calibration is re quired The corresponding tubing includes a pressure controller or a diaphragm pump a filter switching valves and a flow meter all parts being mounted in a special sample cabinet For the gas supply 6 mm Schott terminals have been chosen Power and signal connections are fitted to a row of terminals located in the sample cabinet Ambient air or instrument air can be used as reference gas Furthermore the automatic calibration of all AMS ZrO probes within pre selectable time periods is feasible while using the electronic unit AMS 3220 Alternatively to the separated mounting of pneumatic unit and electronic controller a cabinet housing for both of them can be supplied Version 07 2010 Instruction Manual Page 5 AMS 3220 ZrO Oxygen Analyser 3 Technical Data Electronic Controller AMS 3220 Measuring range s Resolution of display Measuring accuracy Repeatability of the measuring signal Drift month Display Monitoring Signal outputs Galvanic isolation Alarms for measuring signals Status output Digital interface Certifications Electrical safety Housing protection Dimensions Weight Ambient temperature Voltage supply Version 07 2010 standard 0 1 to 25 vol for flue gas applications 0 1 vol for measuring values 210 0 vol 0 01 vol for measuring values from 1 00 to 9 99 vol display in ppmv for measuring va
34. rging phase is finished the electronic controller automatically starts measuring 9 3 3 Adjusting the Purge Time Note 1 Each calibration sequence starts and ends with purging the analyser for a specific time period primarily factory adjusted Note 2 Proper purging is required for reliable as well as solid measuring val ues If the measuring values during the calibration sequence SAM PLING are not stable an error message appears on the display and the purge time should be extended CALIBRATION INSTABLE Note 3 Aligning the purge time may be required to take into account the vol ume of the supply gas lines Purge time setting e Press the Hidden key the adjacent message appears on the dis play e press the until this message appears PURGE TIME via the two arrow keys T and the purge time can be changed The Purge Time may be assigned individually to a value in the range 30 900 1200 sec Not pressing any button within 5 minutes time automatically puts the instrument back into the measuring mode Version 07 2010 Instruction Manual Page 28 AMS 3220 ZrO Oxygen Analyser 94 Calibration Errors The calibration procedure will be controlled continuously and calibration errors will be indi cated on the display Note Calibration errors cause the calibration procedure to stop To launch the measuring mode again just press the F button The interruption of a cal
35. s described above and press the F button again The following message appears on the display Instruction Manual Page 20 AMS 3220 ZrO Oxygen Analyser AL 1 DELAY s Delay time in s The delay time can be chosen from 1 60 seconds All alarms are also available at the terminals on the rear panel of the electronic controller via the relay wiring respectively see Chapter 3 for the technical data of the relays and Chap ter 5 for the terminal assignment After completing the assignment of the measuring range it is recommended to move to the upper programming level by pressing the hidden button again If the hidden button or any other button is not pressed within 10 minutes time the electronic controller automatically returns to the main level Warning Faulty parameters will also be accepted from the electronic controller without any confirmation of the apparent mistake Version 07 2010 Instruction Manual Page 21 AMS 3220 ZrO Oxygen Analyser 9 Calibration 91 Selecting Calibration Gases The Oxygen analyser must be calibrated with two different calibration gases Depending on the application the calibration gases must be chosen as follows 9 1 1 Measuring Oxygen Concentration in Process Gas Samples To determine the Oxygen concentrations in a custom set range the calibration gases must cover the upper and the lower set point of this Oxygen concentration range Example Measuring a process gas
36. the earliest after operating 1 hour Version 07 2010 Instruction Manual Page 38 AMS 3220 ZrO Oxygen Analyser 12 Service The electronic controller AMS 3220 features a substantial self diagnostic philosophy with fault signals Maintenance is only necessary for the probe cleaning from dust and deposits and in case the sensor has to be exchanged 12 1 Calibration Basically calibration should be executed for two concentrations see 9 It is recommended to calibrate after at least one hour operation and at regular operation tem perature Regularly repeating the calibration within 3 months period is also recommended This calibration period might be extended up to 6 months due to the long term stability of the ZrO The calibration period might be shortened if the probe is exposed to aggressive chemicals heavy dust deposits high temperatures and temperature differences etc Just monitor the suc cessive measuring values at the calibration points for some time to detect solid deviations from the initial calibration 12 2 Exchange of the Sensor Lifetime The average lifetime of the sensor is about two years This time might be extended regarding applications with almost constant operation temperature and less aggressive gas mixtures e g for flue gas measurements in natural gas incinerators It is recommended to exchange the sensor after 30 months operation Storing a sensor for up to two years does not affect its lifetime or perf
37. this proportion and set points with a lower proportion as shown cannot be assigned to the analysing system Version 07 2010 Instruction Manual Page 23 AMS 3220 ZrO Oxygen Analyser 9 2 2 Start the Calibration Important I During the measuring phase no button should be pressed Pressing the F button after purge time breaks off the calibration procedure Important IT While calibrating the Oxygen concentration should not be altered or only slightly at the most Important III Regarding the calibrating sequence it is recommended to calibrate the lower calibration point first and then the upper calibration point LO Start the calibration of the lower calibrating point Press and hold cursor button 4 push F button Release the buttons The adjacent message appears on the display PUT LO GAS HEHH 96 Index measured Oxygen concentration PRESS F IF STABLE HI Start the calibration of the upper calibration point Press and hold cursor button f push F button Release the buttons The adjacent message appears on the display PUT HI GAS HEHH 96 Index measured Oxygen concentration PRESS F IF STABLE Proceed as described in 9 2 3 9 2 3 Calibrating LO and HI Connect the analyser system to the calibration gas line for the lower or upper calibration point respectively Adjust the gas flow to 40 60 Monitor the current Oxygen concentration as indicated in
38. truction Manual Page 22 AMS 3220 ZrO Oxygen Analyser Calibration sequence I check set points for calibration see Chapter 9 2 1 IL start calibration 9 2 2 calibrating LO and HI see 9 2 3 IV connect the process line purging and measuring see 9 2 4 Important During the calibration procedure all alarm messages and signal outputs are fixed The last measuring value is indicated on the display for verification 9 2 1 Assigning Set Points and Calibration Points Before starting the calibration of the analysing system the set points of the calibration gases used must be assigned to the instrument as described below Press the F button until the adjacent message appears CAL 96 THHHt Oxygen concentration in vol for the lower calibration point With the help of the cursor buttons assign the lower calibration point according to the cali bration gas specification label Press the F button again until the following message appears CAL HIGH 9 90 THHHt Oxygen concentration in vol for the upper calibration point e Through the cursor buttons assign the upper calibration point according to the calibration gas specification label It is important for a reasonable calibration that the proportion of the Oxygen concentrations in the two reference gases employed should be at least upper set point x 5 lower set point 1 The analyser system monitors
39. u 24 26 PURGING ttt 5 Autocalibration AUTO CAL 25 AUTO CAL TIME Uu 25 NEXT CAL TIME Men PURGE TIME tette eee ted anao eus 258 Calibration error CALIBRATION ERROR trie eerie ev EPOR MER 28 PRESS F TO CONTINUE CALIBRATION ERROR 31l 5 eter ete ete fuper on ete po i tte dee 28 PRESS F TO CONTINUE System error ALARM E 37 HEATER SHORTCUT HEATER ALAR Mies 5 eerte ARRIERE NRI I EHE 37 HEATER MISSING FACT DEELONADED esed 37 PRESS F TO START Version 07 2010 Instruction Manual Page 41 AMS 3220 ZrO Oxygen Analyser 14 Appendix Drawings Dimensions Version 07 2010
40. uired may be split to different cores Version 07 2010 Instruction Manual Page 14 AMS 3220 ZrO Oxygen Analyser 6 Preparations for Start Up of Electronic Controller AMS 3220 The electronic controller AMS 3220 must be connected to the ZrO probe as described in Chapter 5 of this manual gas lines must be connected corresponding to their assignment in doing so we recommend leak proofed fittings The reference air flow to the probe must be adjusted to 20 40 NI h Only for the initial start up the RS232 interface cable control cable for magnetic solenoids must be de connected from the corresponding terminals if the cable has been wired before I Switch on the analyser Immediately the display indicates the system s identification number and after some seconds time the following message appears PREHEAT WAIT HHH 5 waiting time 600 sec If this warm up period is finished the electronic controller automatically switches to the measuring mode The first row of the display shows the current Oxygen concentration value Pre assigned by the factory the second row does not appear but is freely pro grammable by the operator see Chapter 7 1 2 of this manual II Function test The probe must be purged through the calibration gas line with air and bottled gas while monitoring the measuring value The corresponding gas flow should be 30 to 60 Nl h This function test is pre aligned from the supplier this mea
41. ust be a non modem cable with the pin assignment as shown in drawing number 03 3220 000 36 A4 see appendix 2 Start the terminal programme on the remote computer and take care of the assignments as follows COM Port COM interface at the computer Baud Rate 19200 bps Start Bits 1 Data Bits 8 Stop Bits 1 Parity None Data Protocol Whenever the master sends a data telegram to the instrument the instrument is re quired either to send data change parameters or carry out a procedure The instrument answers by sending the data required resp by changing the parame ters or by carrying out a procedure e g calibration Each telegram is for one kind of information only The instrument answers with a maximum delay of 0 2 seconds Each telegram consists of several fields which are separated by a maximum of 5 spacings Each telegram is closed by lt CR gt Carriage Return The instrument recognises and evaluates a telegram only after receiving CR Description of Fields and their meaning and formats Version 07 2010 Instruction Manual Page 30 AMS 3220 ZrO Oxygen Analyser Each telegram consists of a maximum of 6 Fields 1 Field 244 Field 34 Field 4 Field 5 Field 6 Field Example for interpretation see further below Definition of the meaning of the telegram Status Field in messages from the instrument only characterises the data transmitted Field for
42. uted Press or toggle the F button until the following message appears on the display AUTO CAL TIME THHHE h time interval required between two NEXT CAL TIME calibrations tme period to the next calibration e Select the time interval between two calibrations through the cursor buttons The interval time can be freely chosen from 1 9999 hours with one hour steps The lower row indicates the time left to the next calibration Note Setting a time interval starts the calibration procedure at the time prescribed automatically Version 07 2010 Instruction Manual Page 26 AMS 3220 ZrO Oxygen Analyser Note Setting AUTO CAL TIME 0 and subsequently setting a time interval starts the calibration procedure immediately Note Setting AUTO CAL TIME 0 Clears the autocalibration mode 9 3 2 Execute Autocalibration Note Before executing autocalibration the assignment procedure see Chapter 9 4 1 should be com pleted The autocalibration procedure takes into account the pre assigned calibration sequence com pare Chapter 9 4 1 Therefore by choosing the LOW HIGH or HIGH LOW mode the autocalibration procedure is performed automatically for both calibrations points The autocalibration mode starts either automatically through selecting AUTO CAL TIME and setting a time interval or e manually through pressing the two cursor buttons simultaneously
43. with an Oxygen concentration of about 1 10 vol in Na calibration gases with following oxygen concentrations are recommended For the lower set point 2 Vol O in N as the lower calibration point For the upper set point 20 95 Vol in as the upper calibration point 9 1 2 Measuring Oxygen Concentration for Controlling and Alarming Usually in these application areas the Oxygen concentration is relatively constant just varying in a narrow concentration range around the correct value Correspondingly for process control one calibration gas should show the correct Oxygen concentration value and for alarming pur poses the lower or upper alarm value The Oxygen concentration of the second calibration gas should be aligned to the range of devia tion from the correct Oxygen value it may contain more or less Oxygen compared to process gas 9 2 Calibration Procedure The calibration procedure of the analysing system AMS 3220 occurs semi automatic as well as in multiple steps A single calibration step is started manually but supervised and controlled automatically by the analyser The calibration procedure may be stopped anytime through pressing the F button The system functions will not be affected through this handling While calibrating the system step by step as listed below one should carefully consider the dif ferent meaning of upper HI and lower calibration point LO Version 07 2010 Ins
Download Pdf Manuals
Related Search