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Lamtec LT3 User Manual Download Page 11

10

3 

 Product Description

3

Product Description

3.1

Design and Accessory LS2 Lambda Probe

The Lambda Probe LS2 provide the in situ (direct in the flue gas) measurement of O

2

 concen-

tration in exhaust gases in the super-stoichiometric range (

>1).

Fig. 3-1 Lambda Probe LS2 standard design

Alternatively:

Fig. 3-2 Lambda Probe LS2 in HT design

1

Lambda Probe LS2 in standard housing up to 300 °C (572 °F)
Default cable length is 2 m (6.5 ft), FEP, with connecting plug

2

Probe installation fitting (PIF)

3

Gas Extraction Device (GED)

1

Lambda Probe LS2-HT with flue gas bypass tube, temperature up to 1200 °C 
(2192 °F) depending on material,
–

750 °C (1382 °F) Stainless steel

–

950 °C (1742 °F) Inconel

–

1200 °C (2192 °F) Kanthal

Temperature at probe heat max.100 °C (212 °F)
Default cable length is 2 m (6.5 ft), FEP, with connecting plug

2

Flue gas bypass tube

Summary of Contents for LT3

Page 1: ...www lamtec de Sensors and Systems for Combustion Engineering User Manual Lambda Transmitter LT3 Lambda Probe LS2 ...

Page 2: ......

Page 3: ... 4 4 2 Main Menu Calibration 18 4 4 3 Main Menu Settings 19 5 Maintenance 20 5 1 Probe Testing and Calibration 20 5 1 1 Checking Calibrating the Air Voltage Offset 20 5 1 2 Checking Calibrating the O2 Electrode 20 5 1 3 Reading the Measured Values 20 5 1 4 Enter the Password for the Access Level 22 5 1 5 Activate deactivate Maintenance Mode 23 5 1 6 Response of the Internal Resistance Regulation 2...

Page 4: ...a LSB Module LSB Address 03 and 51 46 8 2 1 Functional Description 46 8 2 2 Factory Setting of the Digital Outputs 47 8 2 3 Diagnosis of the Digital Outputs 47 8 3 Digital Inputs via the LSB Module LSB Address 11 and 55 48 8 3 1 Functional Description 48 8 3 2 Factory Settings of the Digital Inputs 49 8 3 3 Diagnosis of the Digital Inputs 49 8 4 LSB Module for Calculating Combustion Efficiency 50 ...

Page 5: ...2 Information on Using this Operating Manual NOTICE Before starting work you absolutely must read these instructions Carefully observe all warning notes They contain important data and information the compliance with which will ensure the func tion of the device and in turn reliable measurement results The device described here corresponds with the standard configuration Particular attention must ...

Page 6: ...s draws the user s attention to the possibility of imminent danger If it is not avoided it may result in death or very serious injury The plant including its surroundings could be damaged CAUTION This draws the user s attention to the possibility of imminent danger If it is not avoided it may result in minor injuries The plant including its surroundings could be damaged NOTICE This draws the user ...

Page 7: ...ational risks and directives all the measures required to preserve the value e g for transportation and storage as well as maintenance and service are maintained Intended use The product described here has left the factory in a flawless safe and checked condition and it must be maintained exclusively in the manner that is described by the manufacturer Equally the proper transportation correct stor...

Page 8: ... VDE 0105 or IEC 364 or directly comparable standards like DIN 0832 These persons must have access to the provided operating manual and any pertinent or der related documentation during all work and observe these documents within the scope of preventing risks and damage User groups For the handling of the Lambda Transmitter LT3 three user groups are required Service technicians of LAMTEC or its OE...

Page 9: ...iding consequential damages To avoid consequential damages in the event of failure which could cause direct or indirect personal or material damage the owner must ensure that qualified personnel can assess the faults and initiate appropriate measures to tackle them Protect against gas leakage from the gas bearing channel The Lambda Probe LS2 is fitted directly to the gas bearing channel via the pr...

Page 10: ...till Residual gases will cause corrosion and could damage the probe Do not store the device outside without any protection Always store in a dry location and if possible keep in the original packaging When uninstalling protect the ends of cables and the connectors from corrosion and soil ing Corroded connectors can cause malfunctions If possible always transport in the original packaging ...

Page 11: ...ambda Probe LS2 in HT design 1 Lambda Probe LS2 in standard housing up to 300 C 572 F Default cable length is 2 m 6 5 ft FEP with connecting plug 2 Probe installation fitting PIF 3 Gas Extraction Device GED 1 Lambda Probe LS2 HT with flue gas bypass tube temperature up to 1200 C 2192 F depending on material 750 C 1382 F Stainless steel 950 C 1742 F Inconel 1200 C 2192 F Kanthal Temperature at prob...

Page 12: ... manual purging for application in high dusty environments 1 Lambda Probe LS2 HT up to 300 C 572 F Temperature at probe heat max 100 C 212 F Default cable length is 2 m 6 5 ft FEP with connecting plug 2 High dust reception flange with pneumatic connections ...

Page 13: ...ed in the standard Functions Reading of the O2 measured values Password entry Information regarding the probe fuel warnings faults software version CRC and serial number Calibration of measurement Settings maintenance filter time analogue output probe replacement display limit values and digital outputs Fig 4 1 LT3 user interface Fig 4 2 Housing with user interface ...

Page 14: ...nu entries or to the edit mode in the case of selected pa rameters or values With the keys and the currently selected value can be changed accordingly Hold down the respective key and the value will count automatically up or down BACK BACK leaves the window menu or edit mode 4 2 Menu Structure 4 2 1 Password Entry Menu Structure No access level necessary Access level Customer Access level Service ...

Page 15: ...14 4 Display and Operational Controls 4 2 2 Information Menu Structure 4 2 3 Calibration Menu Structure Enter the password for access level 1 see chapter 5 1 4 Enter the Password for the Access Level ...

Page 16: ...15 4 Display and Operational Controls 4 2 4 Settings Menu Structure Enter the password for access level 1 see chapter 5 1 4 Enter the Password for the Access Level ...

Page 17: ...Description status line Active fault warning Operating mode OK Heat up cold start Status of limit values 1 4 Active limit value not triggered Non active limit value off Active limit value undershot exceeded Active maintenance mode Without access level Access level 1 Customer Access level 2 Service Window number If a limit value is exceeded the display shows an upward or downward arrow ...

Page 18: ...ccess the main menu Meaning of the symbols Password entry Information regarding the probe and fuel warnings and faults software version CRC and serial number Calibration of measurement Settings maintenance filter time analogue output probe replacement display limit values and digital outputs Basic display Main menu ...

Page 19: ...checksums Serial number Manual reset of the limit values if they are set to manual reset 4 4 2 Main Menu Calibration Enter the password for access level 1 see chapter 5 1 4 Enter the Password for the Access Level Meaning of the Symbols Required Access Level Offset calibration to 21 O2 calibration in air none O2 calibration 1 customer or higher Fuel change over 1 customer or higher ...

Page 20: ...chapter 5 1 4 Enter the Password for the Access Level Meaning of the Symbols Required Access Level Maintenance mode none Filter time of the measurement values none Analogue outputs 1 customer or higher Trigger probe replacement 1 customer or higher Display parameters none Limit values 1 customer or higher ...

Page 21: ...ning 12 months for natural gas combustion systems 5 1 1 Checking Calibrating the Air Voltage Offset 1 Shut down the system If the system cannot be shut down the probe must be removed from the system Respect the safety hints and warnings 2 Pre purge until there is no more flue gas at the measuring point about 1 minute 3 Finish pre purge 4 Perform the offset calibration of the O2 U O2 electrode see ...

Page 22: ... current fuel selection The O2 probe voltage U O2 stabilises to val ues between 10 20 mV Die Rki internal probe resistance lies between 15 25 Display of whether the internal probe resistance regulation is active Ph Display of the current heating capacity Rki S Display of the setpoint value for the internal resistance regulation Currently selected fuel ...

Page 23: ...r password via and ENTER Access level 1 Factory setting Customer Level 0000 access to customer functions only Customers can change the password for access level 1 For details ask the burner manufacturer supplier Access level 2 Service level Password customer specific Access to customer and service functions ...

Page 24: ...d substitute values can be set as an output during active maintenance mode A specific access level is not required for this In the main menu select In the MAINTENANCE MODE select Menu 460 ACTIVATE DEACTIVATE MAIN TENANCE MODE opens Use the keys and ENTER to activate deactivate the MAINTENANCE mode Activate maintenance mode Deactivate maintenance mode If both parameters UI300 LT V2 and LT3 are the ...

Page 25: ... for optimum operation Rki O2 15 The probe does not become hot enough The probe was installed in a cold spot and is thus cooled Determine a new installation site If necessary check whether a Rki O2 of 15 is reached when it is disassembled If a too high Rki O2 is assumed by the internal resistance regulation the probe func tions outside of its optimum operating point Rki O2 15 The internal resistan...

Page 26: ...cold start termination leads directly into measurement operation without an addi tional prompt If the probe does not reach its optimum operating point falsified measured val ues and possibly faults and warnings are the result In the main menu select for the calibra tion of the probe Interrupt the cold start prematurely By selecting with the cursor key and ENTER the cold start is terminated pre mat...

Page 27: ...test gas calibration the LS2 HT is be provided with a test gas connection It can then be calibrated when installed whilst combustion is taking place A testing device is available for the test gas calibration of the of the standard probe LS2 type 650R1000 s chapter 5 1 Probe Testing and Calibration Disassemble the probe for calibration The following calibration processes must be performed after com...

Page 28: ...V To perform an offset calibration the probe must be located in the ambient air and should run for at least 30 minutes in a fault free measuring mode No access level is required NOTICE When using a LS2 HT type 656R2015 the offset calibration can also be performed in an in stalled state whilst combustion is running For this purpose air dry and oil free air instrument air or ambient air must be fed ...

Page 29: ...sing the keys and ENTER triggers the offset calibration Confirm the setting with ENTER within 10 s otherwise the value is rejected The U O2 value stabilises to values between 10 20 mV The Rki internal probe resistance value is 15 Display of whether the internal probe resistance regulation is active Ph Display of the current heating capacity Rki S Display of the setpoint value for the control of th...

Page 30: ...ernal measuring device check if the measuring device is measuring wet or dry In the case of devices with an upstream measuring gas cooler it always concerns a dry measurement This also applies to devices which remove the moisture by means of a chemical substance The LS2 measures wet The difference be tween a wet to dry measurement is evident from the graphic in chapter 11 1 Wet Dry Meas urement De...

Page 31: ...f the measuring point through an additional device Choose a test gas combination so that O2 content lies in the usual plant specific range and within the specified measuring range of the probe Description The testing device is a device for the task of testing gases via the test gas connection ON Nr 4 in Fig 5 2 Testing device laying on the table onto the probes LS2 in the standard housing The prob...

Page 32: ... device laying on the table 1 Probe LS2 KS1 KS1D in Standard housing 2 Hose 3 Particle filter 4 Test gas connection ON 5 Plug in nozzle for flue gas channel 6 Test gas outlet 7 Hose Fig 5 3 Testing device plugged into flue gas channel ...

Page 33: ...ting in the Operating Point with Reference Measurement NOTICE With LS2 HT the test gas to be tested calibrated can be connected directly at the hose con nection for calibration gas this can be done while combustion is running the probe does not have to be removed A special testing device is not necessary The required test gas quantity lies between 40 60 l h if no flow meter is available a test gas...

Page 34: ...must be in operation ideally at the desired operating point Perform the calibration as described in Chapters 5 1 2 Checking Calibrating the O2 Elec trode and 5 1 2 Checking Calibrating the O2 Electrode 5 1 11 Consumables Lambda Probe Average lifetime natural gas and light fuel oil 3 5 years with heavy fuel oil coal and biogas 1 3 years Functional check calibration with test gas Probe LS2 1 Offset ...

Page 35: ...Output Range via the User Interface Select in the MAIN MENU for the set tings SETTINGS allows the following Maintenance mode level 0 see chapter 5 1 12 1 Maintenance Mode Filter time for the measured values level 0 Analogue outputs level 1 see chapter 8 1 3 Conversion of the Output Range via the User Interface Probe replacement level 1 Display level 0 Limit values level 1 Digital outputs level 2 F...

Page 36: ...35 5 Maintenance 5 1 12 4 Display Display no access level is required Brightness Contrast Time in seconds until the background lighting is shut OFF Switch from C to F and vice versa ...

Page 37: ... the main menu to the indication of the limit value The display shows the hand symbol if the limit value needs to be quitted manually Click ENTER to switch to the menu for acknowl edge the limit value Limit values Click to proceed Use the keys to change the limit values Limit value OFF Monitoring exceeding Monitoring undershooting Setting of the limit value Adjusting the trigger time of the limit ...

Page 38: ... Remote Software and sent it to LAMTEC for fault diagnostics 6 1 1 Faults F W H 001 1 Fault Warning Main processor Fault number Fault probe probe voltage trigger 1 Fault no Fault text 002 HP 102 ÜP Probe heating fault 1 The heater is short circuited or has a high resistance tolerance time of 10 s Help Check the wiring LT3 Term 13 and 14 disconnect the probe probe heating at LT3 or in SAK and measu...

Page 39: ...i of 15 Check the value of the internal resistance Rki in the display Trigger the probe exchange and restart the probe so that the Rki of 15 can be learnt again Check the system temperature at the installation site Check the probe when removed if pertinent Exchange the worn probe if pertinent As a follow up fault 002 2 Heating capacity outside of permissible interval 8 W 25 W for longer than 15 s ...

Page 40: ...wiring errors when using a SAK Check wiring Help Remove the probe For LS2 Standard Extend the connection piece of the probe installation fit ting and GED if necessary Extension must not be insulated For LS2 HT Use intermediate flange The intermediate flange must not be insulated 008 HP 108 ÜP Intern fault measured value comparison HP UP Device defective contact the manufacturer and specify the tri...

Page 41: ...2 temperature is not accepted The O2 measurement remains will be improper 1 29999 Trigger value of the O2 temperature x0 1 K 010 HP 110 ÜP For LT3 F Internal resistance of ceramics of the O2 electrode over 45 Ω For LT3 Internal resistance of ceramics of the O2 electrode over 80 Ω 0 65535 Trigger value of current internal resistance x0 1 tolerance time of 3 seconds 016 HP 116 ÜP Internal warning 1 ...

Page 42: ...n INFORMATION select for the fault history Fault history 01 Number of the entry 001 Fault number of the main processor If the fault number is displayed as 101 100 there is a fault in the monitoring processor 1 Trigger 1 0h Occurs in case of Operating hours For fault numbers see Chapter 6 1 1 Faults ...

Page 43: ...tling the LS2 Lambda Probe or the probe installation fitting PIF Before opening shut down the system Wear suitable protective clothing and a protective mask Fix respective warning information in close proximity to the mounting site Immediately seal the opening again The LT3 Lambda Transmitter and the LS2 Lambda Probe are a high quality electronic meas uring system It therefore requires careful han...

Page 44: ...re controlled via the LSB SYSTEM BUS In the process the module is triggered by an adjustable address 1 99 The statuses of the outputs are transferred in the data bytes If an analogue output module with the same address exists in the system the voltage current measured there is shown on the respective output NOTICE All outgoing lines from the LSB module must be shielded The shields must be applied ...

Page 45: ... value Setting range 0 25 O2 adjustable Factory setting 0 10 Vol O2 4 20 mA fault 0 mA 1 Analogue output module Terminal assignment 2 LSB terminal resistance 120 1 1 Analogue output 1 3 Rotary switch for setting the tens LSB address 2 2 Analogue output 2 4 Rotary switch for setting the ones LSB address 3 3 Analogue output 3 5 Jumper plug 4 4 Analogue output 4 24 VDC Voltage supply for LT3 Terminal...

Page 46: ...nu to switch to the settings menu Select to switch to the analogue outputs The analogue outputs menu provides the fol lowing setting options Current range or voltage range Output range Selection of current range or voltage range depending on the module Output range for O2 O2 measurement value η Efficiency T ex Output temperature ...

Page 47: ... are to be executed NOTICE All outgoing lines from the LSB module must be shielded The shields must be applied to the PE rail as short as possible NOTICE The termination resistor 120 must be installed and activated on the first and the last BUS device Avoid stub line 1 Digital output module Terminal assignment 2 LSB terminal resistance 120 13 14 Relay output 1 3 Rotary switch for setting the tens ...

Page 48: ... only 2 rotary switches 8 2 3 Diagnosis of the Digital Outputs 4 LEDs above the switches indicate the switching state of the digital outputs NOTICE Manual activation of the relay outputs Position 1 output contact always closed Position A output contact switches via LSB Position 0 output contact always open Digital output 1 Term 13 14 Faults Digital output 2 Term 23 24 Warning Digital output 4 Term...

Page 49: ...OTICE All outgoing lines from the LSB module must be shielded The shields must be applied to the PE rail as short as possible NOTICE The termination resistor 120 must be installed and activated on the first and the last BUS device Avoid stub line 1 Digital input module Terminal assignment Input 1 4 address 11 Input 5 8 address 55 1 1 Digital input 1 2 LSB terminal resistance 120 2 2 Digital input ...

Page 50: ...ernal contact with 24 VDC Position 0 input always deactivated 8 3 3 Diagnosis of the Digital Inputs 4 LEDs above the switches indicate the switching state of the digital outputs Digital input 1 Trigger OFFSET CALIBRATION Digital input 2 RESET FAULT Digital input 4 DEACTIVATION LIMIT VALUE 1 4 Digital input 5 RESET LIMIT VALUE 1 4 Digital input 8 DEACTIVATION CALIBRATION ...

Page 51: ...of function The calculation takes place according to the following formula nF in 1 qA 100 qA flue gas loss qA tair tex A2 21 O2 B with the oxygen content in the exhaust gas in Vol O2 with the intake air temperature tair and the flue gas temperature tex each in C as well as with the fuel specific factors for oil A2 0 68 B 0 007 for gas A2 0 66 B 0 009 Function not effective until 14 9 Vol O2 It is ...

Page 52: ... 3 Analogue output 3 efficiency Factory setting 80 100 4 20 mA 4 4 Analogue output 4 flue gas temperature Factory setting 0 400 C 32 F 752 F 4 20 mA LED 1 red ERROR OFF Normal mode ON Initialisation not yet performed or not successfully ended e g because the module could not be initialised No message has been received for at least 3 seconds LED 2 green POWER ON Module completely initialised and wi...

Page 53: ...ninstalling protect the ends of cables and the connectors from corrosion and soil ing Corroded connectors can cause malfunctions Always store in a dry location and if possible keep in the original packaging If possible always transport in the original packaging Transport and storage 20 C up to 70 C 4 F up to 158 F ...

Page 54: ...and LS2 is also based on environmental considerations The modules can easily be separated and sorted into distinct types and recycled accordingly The device contains electrical and electronic components and must not be disposed of as do mestic waste The local and currently valid legislation absolutely must be observed ...

Page 55: ...ements are normally used here since the humidity has been extracted from the flue gas As a result O2 measurement values vary see diagrams below Fig 11 1 Theoretical max deviations of the O2 concentration in wet and dry meas urement Fuel natural gas or oil Fig 11 2 Calibration plot for the concentra tion values of O2 dry and O2 wet O2 concentration range Constant C gas Ch4 Constant C oil CH2 x 0 6 ...

Page 56: ...55 11 Appendix 11 2 EU Declaration of Conformity ...

Page 57: ...56 11 Appendix ...

Page 58: ...Josef Reiert Straße 26 D 69190 Walldorf Telefon 49 0 6227 6052 0 Telefax 49 0 6227 6052 57 info lamtec de www lamtec de Publication no DLT3151 21 aEN 003 The information in this publication is subject to technical changes Printed in Germany Copyright 2021 ...

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