ULTRASONIC LEVEL TRANSMITTER USER MANUAL
Contents
1. d 3 2 Measurement status measure Pushing M to display measuring status when the menu item is 3 1 LCD displays as below People are our prime movers 39 RLT Instrumentation Pvt Ltd Unit of RLT Group Meas Status 3 2 Meas reliability 10dB Sensor Status OK 3 3 Choose Curve Echo Curve At this menu different curves can be selected to be displayed at menu 3 4 when the menu item is 3 2 Presss M you get Choose Curve 3 3 Echo curve gt Pushing OK to select the curve There are three curves Echo curve false echo curve and output trend curve Choose Curve gt Echo Curve False Echo Curve Output trend 3 4 Curve Pushing M will display the selected curve when the menu item is 3 3 LCD displays as below Curve Zoom When the curve is displayed pushing OK will enter curve Zoom function menu Move arrow with M select menu item for X Y axis Zoom Then confirm with OK People are our prime movers 40 RLT Instrumentation Pvt Ltd Unit of RLT Group For X axis Zoom pushing ff to mark the start position for zoom then confirm with OK Pushing f again to mark the end position for zoom and confirm with OK The selected area of the curve will be shown on the whole screen Exit zoom with BK Echo Curve gt X Zoom Y Zoom Unzoom 3 5 Simulation Simulation is used to simulate the 4 20mA current output By current output simulation the accuracy and linearity of the cu2. Causes Solution ROM verification Error ROM operation illegal Error contact the manufacturer Logger reading error Stored parameters are wrong Power On again contact the manufacturer System Logger error System stored data area has error Power On again contact the manufacturer Measuring circuit hardware error Sub CPU circuit errors Power On again contact the manufacturer Date time error System timer has errors Power On again contact the manufacturer No Display Erratic or abnormal Operation Problem with wiring Check wiring connections No influence of measuring normally No Response to key pressing Keypad is locked Bad Plug connection Input password to unlock keyboard or check wiring connections no influence of measuring normally 54 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group LTRS51 Explosion Proof Approval P Standard Without Approval I Intrinsically Safe Ex ia IIB T6 Material Process Temperature Protection A PU PC 40 70 C IP66 B PTFE PVDF 40 80 C IP67 Electronic B 4 20 mA HART 2 wire C 4 20 mA 22 8 26 4 V DC HART 2 wire 4 wire D 198 242 V AC HART 4 wire Housing A Aluminium IP67 B Plastic IP66 D Aluminium 2 Chamber IP67 G Stainless Steel316L IP67 S Special option IP68 Protection Cable Entry
3. IP67 G Stainless Steel316L IP67 S Special option IP68 Protection Cable Entry M M20x1 5 N NPT Display Programming C Yes X No Note Version I Product must be matched with housing A and electronic components A amp C 57 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Basic Settings Min Adj 1 1 Change 1 3 1 No Damping 1 4 Linearity consumer Prog Display Shut off Map Value 2 1 Percent distance Scaled height LCD Current Percent Contrast 2 2 Distance min Distance Max Meas Status 3 2 Meas reliablity sensor Status Choose Curve 3 3 Echo Curve Flase Echo curve Output trend 58 Peak Values 3 1 Te Echo Curve 3 4 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Appendix Basic Echo Curve 4 1 a ee Settings 1 Output mode Display 2 Current Output 4 2 m failure mode min I mode Basic reset Diagnostics Reset 4 3 Select reset Factory settings Peak values Units of M d penser Measurement 4 4 ft d Info5 Language 4 5 English HART Operation a standard Multidrop mode 4 6 Copy from sensor Copy Sensor Data 4 7 s copy te sensor PIN
4. Unit of RLT Group 4 4 Units of Measure Two sets of measure system units are available The metric system and the British system Units of Measurement 4 4 Push OK to edit it 4 5 Language Language English gt Push OK to edit it 4 6 HART Operation Mode HART offers standard and multidrop mode The standard mode with the fixed address 0 means output of the measured value as 4 20 mA signal In multidrop mode up to 15 sensors can be operated on one two wire cable In this menu you determine the HART mode and enter the address for multidrop HART Operation mode 4 6 Standard Address 0 Push OK you can select HART operation mode 47 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group HART Operation mode 4 6 gt Standard Multidrop The default setting is standard mode with address 0 4 7 Copy Sensor Data In this menu you back up the sensor settings so as to restore them when necessary Copy Sensor mode Copy Sensor date Push OK LCD displays below Copy Sensor date gt Copy from sensor Copy to Sensor Copy from sensor means to save the sensor settings and copy to sensor means to restore the sensor settings 4 8 PIN In this menu the PIN is activated inactivated permanently Entering a 4 digit PIN protects the sensor data against unauthorized access and unintentional modifications People are our prime movers 48 RLT Instrumentation Pvt Ltd
5. Unit of RLT Group Enable Or Cancel 4 9 Distance Adjustment Distance Adj is used to correct the difference between the measured value and actual distance When menu is 4 8 press M to enter distance Adj LCD displays as below press OK to enter setting Distance Adj 0 000 m d 4 10 Threshold Setting Note This menu requires professionals to operate Threshold set used to set the effective size of the echo threshold threshold set higher ask to respond effectively to fluctuations in degree that greater benefit exclude the small signal clutter but definitely Note if you modify the threshold value is greater than the effective Echo amplitude the wave will cause the result of misunderstanding the menu includes echo threshold and amplitude envelope which the default rate of return threshold for the 60mV amplitude envelope default value of 10mV Threshold 4 10 Echo threshold 60 Envelope level 10 5 Info In this menu the most important sensor information can be displayed 49 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Sensor type E g LTR Serial No E g 123456 Date of manufacturer E g 2013 01 01 Software Version E g 06 08 28 Pushing will select this menu when the main menu item number is 4 LCD displays as below Basic Settings Display Diagnostics Service Info Then Pushing OK enters the info display menu LCD displays as below Sensor Type
6. adjustment max Adjustment medium damping time mapping curve sealed units scaling near blanking and sensor tag In this menu you can setup the sensor display mode and adjust B W contrast for LCD In this menu you can store false echo curve and current output Units of measurement Language rest HART operation mode copy sensor data and PIN the information of sensor including sensor type serial no date of manufacturer software version Enter program mode by press OK Press OK after each parameter editings Otherwise the modification will be abandoned Press BK to quit program status the first digit of the edited parameter will be displayed in black background on entering parameter editing Modify the digit with T Then you can edit next digit with M After editing press OK to confirm and store the modification some settings can be done by selecting one os several optional items with And confirming with OK 26 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Basic Settings Basic settings are basic setup of the sensor such as min Max adjustment medium damping and etc to bring the sensor to program mode from run mode press OK Then the menu is displayed as below gt Basic Settings Display Diagnostics Service Info Note The menu item number is displayed on the top right corner 1 1 Min adjustment the item is one of the setting points that regulates the linear s
7. LTU series Serial No 123456 Pushing LCD Displays as below Date of Manufacturer 5 2 2006 01 01 Software Version 13 03 2013 50 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Example To Display echo curve do as follow ee a a ee e me NNnNBWNK CO Push OK to enter Program status Main menu is displayed on LCD Push M twice to select diagnostics submenu item Push OK to enter the submenu number 3 1 Push to enter next menu the menu number is 3 2 Push M again the menu number is 3 3 Push OK to enter the curve select menu 3 3 Set arrow to point to echo curve with Push OK to confirm Push M the echo curve will be shown Menu number is 3 4 Push OK to enter curve zoom menu Push MP to select X Zoom Push OK to Confirm Push Fto mark the start position Push OK to confirm Push Tto mark the end position Push OK to confirm The area of the curve you select will be shown on the whole screen Push BK several times to return to run state Note Shortcut Key BK can display echo curve on measurement mode but it has no zoom functions Technical Specifications General Parameters Process Connection Process Connection LTUSS1 Silicone G1 4 A Process Connection LTU552 Silicone G2A Process Connection LTU553 Silicone Steel 316L Swiveling Holder Flange Material Transducer PVDF PTFE PU PC Transducer seal Silicone Housing Pla
8. M M20x1 5 N NPT Display Programming A Yes X No Note Version I product must be matched with housing A and electronic components A amp C 55 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group LTU552 Explosion Proof Approval P Standard Without Approval I Intrinsically Safe Ex ia IIB T6 Material Process Temperature Protection C PU PC 40 70 C IP66 D PTFE PVDF 40 80 C IP67 Electronic B 4 20 mA HART 2 wire C 4 20 mA 22 8 26 4 V DC HART 2 wire 4 wire D 198 242 V AC HART 4 wire Housing A Aluminium IP67 B Plastic IP66 D Aluminium 2 Chamber IP67 G Stainless Steel316L IP67 S Special option IP68 Protection Cable Entry M M20x1 5 N NPT Display Programming B Yes X No Note Version I Product must be matched with housing A and electronic components A amp C 56 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group LTUS553 Explosion Proof Approval P Standard Without Approval I Intrinsically Safe Ex ia IIB T6 Material Process Temperature Protection E PU PC 40 70 C IP66 F PTFE PVDF 40 80 C IP67 Electronic B 4 20 mA HART 2 wire C 4 20 mA 22 8 26 4 V DC HART 2 wire 4 wire D 198 242 V AC HART 4 wire Housing A Aluminium IP67 B Plastic IP66 D Aluminium 2 Chamber
9. presence in vessels E g outdoor installation with gusty wind or presence of vortex inside vessels Vent hole of diameter 5 10 mm you are advised to opt for installation with standpipe or bypass tube to avoid the influence on measurement caused by barriers inside vessels People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group foam generation or air vortex If the measurement is undertaken by LTU55X inside the standpipe should be at least bigger than the outside diameter of transducer Please see dimensional drawings for actual sizes Avoid large cracks or welding seam when connecting standpipe False echo storage must be carried out as well in this case Dimensional Details Dimension Unit mm Housing Material PBT AL 316L Material Two Chamber 15 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group FBS Series FBS 2 Exia IIC NO Um Uo Io Co Lo No 16 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group LTUS51 17 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group LTU553 WIRING 4 ELECTRICAL CONNECTIONS Power Supply 20mA HART 2 Wire Power supply and current signal are carried by the same two wire connection cable See the Technical Specifications of this guide for detailed requirement on power supply A safety barrier should be placed between power supply and ins
10. selected in this menu For the non linear correlations parameters setting must be done by a computer previously Pushing will select this menu when the menu item number is 1 4 LCD display as below Mapping Curve 1 5 Linear gt Press OK enter editing menu Move arrow with to select linear or non linear Then confirm with OK 35 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 1ScaledUnits The unit of the scaled output value can be set in this menu Pushing will enter this menu when item number is 1 5 LCD displays as below Scaled Units Height gt M gt 1 7 Scaling Pushing OK to enter the editing menu see parameter editing for the value editing press OK to confirm the modification Scaling 0 100 1 8 Range Measure range should be set in order to get accurate result When menu is 1 8 press Key to enter Range LCD displays as below Press OK key to enter Please see appendix as reference When finishing editing parameter Press OK key to confirm or press BK to cancel Range 00 000 m d 36 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 1 9 Sensor Tag Sensor Tag SENSOR In the menu sensor TAG you edit a 11 digit measurement loop designation The diameter set comprises Letters from A Z and Numbers from 0 9 See Optional item programming to edit the tag name 2 Display This menu is used
11. should be smooth and burr free if possible also rounded Moreover false echo storage must be carried out afterwards On the contrary if the reflective properties of medium are weak you are advised to heighten the mounting position of instruments and also use a standpipe optional to reduce the influence caused by socket Agitator People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group If there are agitators in vessels instrument must be mounted as far away from agitators as possible once installation completed a false echo storage should be carried out while agitators in motion to eliminate negative influence caused by false echo of agitators You are advised to opt for installation with standpipe if foam or wave is generated due to the action of agitators Foam Due to the action of filling stirring or other processes inside vessels dense foams are formed on the surface of some liquid medium which could attenuate emitting signals considerably You are advised to mount the instrument inside a standpipe or opt for a ultrasonic level transmitter if the generation of foam incurs measurement errors Guided Wave radar level instrument is the best option for similar applications thanks to the fact that it is unaffected by foam generation Airflow You are advised to mount the instrument inside a standpipe or opt for a low frequency ultrasonic level transmitter with guided microwaves in the event of strong airflow
12. the technical data on the nameplate 1 3 Operational Safety 1 3 1 Hazardous areas Optional Devices for use in hazardous areas are fitted with an additional Nameplate If the device is to be installed an explosion hazardous area then the specifications in the certificate as well as al national and local regulations must be observed a separate Ex documentation is enclosed with the device and is an integral part of this documentation The installation regulations connection values and safety instructions listed in this document must be observed The documentation number of the related safety instructions is also indicated on the additional Nameplate Ensure that all personnel are suitably qualified People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 1 4 Notes on Safety Conventions and icons In order to highlight safety relevant or alternative operating procedures in the manual the following conventions have been used each indicated by a corresponding icon in the margin Warning A warning highlights actions or procedures which if not correctly will lead to personal injury a safety hazard or destruction of the instrument Caution Caution highlights actions or procedures which if not performed correctly may lead to personal injury or incorrect functioning of the instrument Note A note highlights actions or procedures which if not performed correctly may indirectly affect operation or may lead
13. 4 8 Distance Adj 4 9 Threshold 4 10 Date of 3 Manufacturer Sensor Fypes t software Version 5 2 59 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Head Office RLT INSTRUMENTATION PVT LTD 2 Rangarajapuram 1st Street Kodambakam Chennai 600024 Ph 044 24806500 10 Lines Fax 044 24806555 E mail chennaiho rltinst com Website www rltech in 60 People are our prime movers
14. RLT Instrumentation Pvt Ltd Unit of RLT Group ULTRASONIC LEVEL TRANSMITTER USER MANUAL People are our prime movers INDEX 1 Safety Instructions 2 Identification 3 Installation 4 Wiring 5 Operation 6 Commissioning 7 Maintenance 8 Trouble Shooting 9 Technical data RLT Instrumentation Pvt Ltd Unit of RLT Group TABLE OF CONTENTS PAGE NO 19 24 27 55 55 52 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 1 SAFETY INSTRUCTIONS 1 1 Designated Use The Ultrasonic Level Transmitter for measuring level The manufacturer accepts no liability for damages resulting from incorrect use or use other than that designated 1 2 Installation Commissioning and Operation The device has been designed to operate safely in accordance with current technical safety Standards If installed incorrectly or used for applications for which it is not intended however it is possible that application related dangers may arise E g product due to incorrect installation or calibration For this reason the instrument must be installed connected operated and maintained according to the instructions in this manual personnel must be authorized and suitable qualified The manual must have been read and understood and the instructions followed Modifications and repairs to the device are permissible only when they are expressly approved in the manual Pay particular attention to
15. caled current output At main menu the menu number is 1 Select basic settings with and confirm with OK now the min adjustment is displayed on LCD The menu item number is 1 1 Min adjustment 1 1 0 00 35 000 m d 1 346 m d Pressure OK you can edit the percentage Value Press OK again you confirm the modification and further more you can edit the corresponding distance value See parameter edition to learn how to edit parameters 1 2 Max Adjustment The item is one of the two setting points that regulates the linear scaled current output Pushing M enter this menu when the menu item number is LCD displays 27 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Max adjustment 1 2 100 00 0 000 m d 1 409 m d Pressure OK you can edit the percentage value press OK again you confirm the modification and further more you can edit the corresponding distance value See parameter edition to learn how to edit parameters 1 3 Medium Pushing MAr enter this menu when the menu item number LCD displays as below each medium has different reflective properties This menu is used to set the medium to be solid or liquid Furthermore make sure other relative factors Medium Liquid gt Move arrow with Solid or liquid can be selected Pushing OK will confirm the selection and enter fast level change sub menu 28 People are our prime movers RLT Instrumentation Pvt L
16. cho Edit 4 1 Start 1 00 amplitude 1300 Stop 2 00 amplitude 1200 M d Each curve edit points start point and end point coordinates for the curve you want to edit then the corresponding range of values Is to modify the value Note When the distance coordinate input or modified then the rate will automatically be the root corresponding according to the current saved data update rate changes used as a reference Two pairs of coordinates after editing press OK to confirm the amendment instrument will automatically enter the two points into the line with mew false echo generated curve to replace the original curve press OK to confirm the interface will show the received by this false echo curve for reference then edited by BK to return to the above interface to edit when the editor has been confirmed false echo conditions required to be false then echo BK exit the Edit menu then the interface displays the following False Echo Edit Press OK button to save the above changes according to BK key to abandon the current changes 4 2 Current Menu Current Output 4 2 Output Mode 4 20 mA gt Failure mode no change P Min current 4mA gt 44 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Current Output gt Output Mode Failure mode Min Current Output mode Select output as 4 20 mA or 20 4 mA means the min levels is corresponding to 4mA and the Max Level is correspon
17. ding to 20 mA 20 4 mA mean the min level is corresponding to 20 mA and the Max Level is corresponding to 4mA When the arrow points at output mode push OK you get Output mode gt 4 20 mA 20 4 mA Push you select the item you want and confirm wih Failure Mode Setup the output current on sensor error Three status are available When the arrow points at output mode push M you get item failure mode and confirm with OK Current Output gt No Change 20 5 mA 22 0 mA Min Current Setup the minimal output current is 4mA or 3 8 mA When the arrow points at fail mode push fF You get min current menu Confirm with OK You get 45 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Min Current gt 3 9 mA 4mA Select the item you want with M rnd confirm with OK 4 3 Reset With the reset function modified settings are reset Three sub functions are available Basic Settings Reset settings modified with view point to the default values factory settings Reset special settings as well as basic settings to default values peak measured values Reset the min Max level records When the menu item is 4 2 Push MP you get Reset 4 3 Select Reset gt Push OK LCD displays as below Reset 4 3 Basic Adjustment Factory settings Peak values menu Select the item with M confirm with OK 46 People are our prime movers RLT Instrumentation Pvt Ltd
18. e angler repose When measure medium is solid LCD menu Press to choose next menu and enter angler repose LCD displays as below Large Angle repose Normal gt Press OK to enter large angler repose menu Large Angle repose 1 3 4 Liquid Foaming Pushing will enter this menu when the menu item number is LCD displays as below 31 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Foaming Push OK enter the submenu of foaming powder dust confirmation LCD displays as below 1 3 4 Solid Powder Dust Pushing pwill enter this menu when the menu item number is LCD displays as below Powder Dust Push OK enter the submenu of foaming powder dust confirmation LCD displays as below Powder Dust 32 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 1 3 5 Low DK Pushing will enter this menu when the menu item number is LCD displays as below Push OK enter the submenu of foaming powder dust confirmation LCD displays as below Move arrow with M to select yes or No for medium with Low DK Then confirm with OK 1 3 6 Measuring in Tube When measurement is carried through a tube that is limited for the liquid medium the tube diameter must be set in menu measure in tube so as to rectify the measuring error Pushing will enter this menu when the menu item number LCD displays as below Measure in Tube 1 3 6 People are our
19. easurement A false echo memory should be created with empty vessel so that all potential interfering reflections will be detected Pushing OK will enter this menu when the menu item is 4 LCD displays as below False Echo Change People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Then Push OK LCD displays as below False Echo gt Delete Update Create New Edit With select Update Create new Delete a false echo confirm with OK False Echo Update create new 01 000 m d When you select update create new you are asked to input a distance value for the real echo Then push OK to confirm it and to start the operation It will take some time to store the false echo Note Check the distance to the product surface Because if an incorrect too large value is entered the existing level will be saved as false signal The filling level would then no longer be detectable in this area To edit a false echo curve press the button move the arrow to the desired section will be present Press OK key to confirm This feature has been built on false echo to edit or change to meet the special requirements of working conditions access to virtual False echoes editing interface is as follows Note this menu requires professionals to operate False Echo Delete Update Create New Fait People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group False E
20. must be connected to ground potential via a ceramic capacitor e g 1 F 1500V in order to dampen the low frequency grounding current and avoid the disturbance caused by high frequency signals 2 wire Wiring Diagram 19 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 2 wire wiring used for HART electronic unit B 1 Power Supply and Signal Output 4 wire 2 chamber Wiring Diagram 220V AC Power Supply 4 20mA Signal Output electronic unit D Note 1 short 5 to6 in cause of output not for 4 20mA Wiring Diagram 4 wire 24V DC Power Supply 4 20mA Signal Output electronic unit C Note 1 short5 to 6 in cause of output not for 4 20mA 20 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Wiring Diagram dual wire 24V DC Power Supply 4 20mA Signal Output electronic unit E Note 24V OC switch on 4 4 20mA switch on amp Explosion Proof Connection This product is an intrinsic safety explosion proof version Exia II C T6 with aluminum housing and plastic encapsulated internal structure aimed to prevent sparks resulted from transducer and circuit malfunction from leaking out It is applicable for the non contact continuous level measurement of flammable medium under the level of explosion proof inferior to Exia II c T6 You are required to use FBS 2 series intrinsic safety explosion proof Exia II C voltage of
21. odule The adjustment can be done through operating with four buttons on View Point Optional menu operation languages are available for selection View Point is only used for display after adjustment in that the measurement results can be seen clearly through the glass window Display Adjustment Module onar 1 LCD 2 Adjustment Keypad Keypad Confirm modifications to parameters Enter programming mode Confirm programming options OK Keypad 24 People are our prime movers Choose programming options Choose the digit of parameters to edit Display the contents of parameters B K Keypad Shortcut B K Display Echo wave 25 RLT Instrumentation Pvt Ltd Unit of RLT Group Modify parameter values Keypad Programming mode exit Return to higher menu level People are our prime movers Program Instruction Program Menu Structure Program Submenu Basic Settings Display Diagnostic Info Program Operation Parameter Editing Parameter Editing Optional item Program Program Menu instruction RLT Instrumentation Pvt Ltd Unit of RLT Group Adjustment parameter settings and testing s can be done by the four keys View point Menu structure is shown in the appendix Turn to next menu item Pointed by right arrow with OK Turn to next menu item pointed by down arrow with M Turn to left item with BK Basic adjustment for the sensor is included in this menu They are min
22. or equipotential line according to national or company practice People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 3 INSTALLATION 3 1 Incoming acceptance and storage 3 1 1 Incoming acceptance e Check the Packaging and the contents for damage e Check the shipment make sure nothing is missing and that the scope of supply matches your order 3 1 2 Storage The device must be stored in dry clean area and protected against damage from impact 3 2 Installation Conditions 3 2 1 Dimensions For dimensions please refer to the Technical information mechanical construction section and Overview documentation 3 3 Installation Instructions 3 Mounting Requirements Basic Requirements There is a certain existing beam angle while transducer radiating ultrasonic pulses There should be no barriers between the lower edge of antenna and surface of measured medium Therefore it is highly recommended to avoid facilities inside vessels such as ladders limit switches heating spirals struts and etc during the mounting process False echo storage must be carried out during the installation in this case Furthermore ultrasonic waves must NOT intersect the filling streams Be cautions during the installation when the highest level of target medium must NOT enter into blanking zone the instrument must keep certain distance to vessel walls every possible measure needs to be taken to position the instrument so that
23. power supply 24V DC 5 short circuit current 135mA operating current 4 20mA of safety barriers which are supplementary to this product for the power supply of this product All connection cables must be screened with max Length of 500m Stray capacitor 0 1 F Km stray inductance 1mH Km The level measurement instrument must be connected to ground potential and unapproved supplementary devices are not allowed to use 21 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Explosion Proof Zone None Explosion Proof Zone None Explosion Proof Zone 4 20 mA choose either one AN Adjust with Intrinsically Safe Flameproof Approval 22 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group SOFTWARE Connect with another unit through HART RS232 Connect Cable USB port LTRSX HART port adapter used on COMWAY convertor 250 ohm Resistance COMWAY Convertor Connect with another unit through I 2 C a oe he a software 1 RS232 Connect Cable USB port 2 LTRSX 3 I 2C adapter port used on MOMWAY convertor 23 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group 4 COMWAY Convertor Operation 5 Adjustment Instructions Adjustment Methods Three adjustment methods available for LTR5X 1 Display Adjustment Module 2 Adjustment software 3 HART handheld programmer View Point is a pluggable display adjustment m
24. prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Push OK enter the submenu of measure in tube confirmation LCD displays as below Measure in Tube 1 3 6 If the selection use is confirmed by OK the diameter of the tube will be required LCD displays as below Press OK the value can be edited 1 3 1 Micro DK When choose micro OK as Medium property press OK to enter micro DK setting Micro DK 1 3 1 Empty Span 10 00m True Lever 0 00m DK 1 00 0 020 m d Normally when electronic constant is smaller than 1 4 the direct echo from the medium is low and hard to detect However by measuring the echo reflected from the base of the vessel the height of the medium can be measured Two parameters are needed to be entered here People are our prime movers 34 RLT Instrumentation Pvt Ltd Unit of RLT Group 1 Height of empty vessel 2 True medium height or medium electronic constant these two parameters are related entering either one is accepted The precision of parameters will affect the precision of the measurement 1 4 Damping Pushing will enter this menu when the menu item number 1 3 LCD displays as below Damping Press OK enter editing menu See parameter edition to learn how to edit the parameter To confirm the modification with OK give up with BK 1 5 Mapping Curve This menu define the correlation between the measured value and the current output Linear or non linear mapping can be
25. rrent output can be checked And he system testing can be carried out Push to enter simulation menu when the menu item number is 3 4 LCD displays as below Simulation Start Simulation gt Pushing OK enter simulation mode selection menu LCD Displays as below Simulation gt Percent Current Distance Pushing select the simulation mode Then confirm with OK The corresponding value will be required and then simulation starts 41 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Three types of simulations Percent the output current is decided by a percent Value 100 relative to 20mA 0 is relative to 4 mA Current the Output current is regulated by a current value Distance the output current is decided by a distance value The current output depends on Min adjustment see 1 1 Max adjustment see 1 2 and Mapping see 1 5 4 Service This menu with professional functions can only be used by trained technicians They are false echo storage reset and sensor settings back up password setting and etc Basic Settings Display Diagnostics Service Info 4 1 False Echo High sockets or vessel installations E g Struts or agitators as well as buildup and weld joints on the vessel walls cause interfering reflections which can impair the measurement A false echo storage detects and marks these false echoes so that they are no longer taken into account for the level m
26. stic PBT FR Aluminium Seal ring between housing and Housing covers Polycarbonate 51 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group View Point window on housing Polycarbonate Swiveling holder Stainless Steel Weight LTU551 552 3 Kg Depend on process connection and housing LTUS553 5 Kg Depend on process connection and housing Power 2 Wire Standard Version 16 36 V DC Intrinsic Safe Version 21 6 26 4 V DC Power Consumption max 22 5 mA Ripple Allowance lt 100Hz Uss lt 1 V Ripple Allowance 100 100K Hz Uss lt 10 mV 4 Wire Intrinsic Safe Explosion Proof 22 8 26 4 V DC 198 242 V AC Power Consumption max 1 VA 1W Parameters on Cable Cable Entry Plug One Cable entry of M20x1 5 Cable diameter of 5 9m one binding of M20x1 5 Spring Connection Terminal Applicable for cables with cross section of 2 5mm Output Output Signal 4 20 mA HART Resolution 1 6 uA Fault Signal Constant current output 20 5 mA 22mA 3 9mA 2 wire load resistance See diagram 4 wire load resistance Max 500Q Integration Time 0 40 sec adjustable 52 People are our prime movers 2 Wire Resistance Diagram Load 1100 500 250 0 ae 1 Cable Resistance HART Resistance Load Resistance HART Load 22 RLT Instrumentation Pvt Ltd Unit of RLT Group Voltage limit for non explosion proof version Voltage limit for explosion proof
27. td Unit of RLT Group Fast Level Change 1 3 1 Yes gt 1 3 1 Fast Level Change Pushing OK will enter this menu when it is liquid or solid selection menu and menu item number is LCD display as below Push OK enters Fast Level change confirmation LCD Displays as below Fast Level Change 1 3 1 Yes gt No Move arrow with M to select yes or No for Fast Level changes Then confirm the selection with OK 1 3 2 First Echo When medium is chosen as liquid or solid LCD menu is press to choose next menu LCD displays as below Fast Echo Normal gt People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Press OK to enter first echo menu LCD displays as below Fast Echo Normal Big Small Bigger Biggest Press to choose the way to set first echo There are five ways Normal No adjustments on first echo Small decrease first echo by 10dB Big Increase first echo by 10 dB Bigger Increase first echo by 20 dB Biggest Increase first echo by 40 dB 1 3 3 Liquid Agitated Surface When measure medium is liquid LCD menu Press OK to choose next menu and enter agitated surface LCD displays as below Agitated Surface 1 3 3 Large Angle repose 1 3 3 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Agitated Surface 1 3 3 Large Angle repose 1 3 3 Yes Yes gt No gt No Press OK to enter Agitated surface menu 1 3 3 Solid Larg
28. the direction of transducer emission is perpendicular to the surface of measured medium The installation of instruments in Explosion proof area must abide by relevant local or federal safety regulations Aluminum housing should be used for intrinsically safe explosion proof version which is also applicable in explosion proof areas The instrument must be connected with ground in this case People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group The lower edge of probe is the reference plane for measurement Blanking Zone Empty Max Adjustment Min Adjustment cal ll ale Note The highest level of measured medium must not enter into blanking zone while ultrasonic level instrument is in operation People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Mounting Position Minimum distance of 200mm between instrument and vessel wall must be assured while mounting LTU551 or LTU552 1 Reference Plane 2 Center of vessel or symmetrical axis People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Minimum distance of 500mm between instrument and vessel wall must be assured while mounting LTU553 1 Reference Plane The best mounting position for a conical vessel with flat top is the center of its top As the effective measurement can reach the bottom of vessel Illustrative Diagram on installation People are our prime movers RLT Instrumenta
29. tion Pvt Ltd Unit of RLT Group 1 Wrong Fail to turn the antenna perpendicular to the surface of target medium 2 Wrong Instruments are mounted in the center of concave or arched vessel tops which results in multiple echoes 3 correct 1 Wrong Mount the instrument in above filling stream which results in the measurement of filling stream not the target medium 2 Correct Note sun shield or rain proof is required for outdoor mounting Installation Methods 10 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Use flange to mount LTU553 11 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Damp Proof In order to avoid dampness under outdoor or humid indoor conditions or for those instruments mounted on cooling heating vessels seal rings used on cables should be screwed tight plus the cable must be bended downward outside cable entry indicated on the diagram Socket 12 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group The transducer end must at least protrude 10mm out of socket 50mm 2 80mm 3 100mm 4 150mm 6 d1 gt 150mm L2 lt 400mm L1 gt L2 In case of strong reflective properties of target medium and big socket diameter you can mount instruments on sockets higher than the antenna length The recommended values for socket heights are shown in the illustration below The socket end
30. to an instrument response which is not planned Device certified for use in explosion hazardous area If the device has this symbol embossed on its nameplate it can be installed in an explosion hazardous area or a non hazardous area according to the approval Explosion Hazardous area Symbol used in drawings to indicate explosion hazardous areas Devices used in hazardous areas must possess an appropriate type of protection Safe area non Explosion hazardous area Symbol used in drawings to indicate if necessary non Explosion hazardous areas People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Devices used in hazardous areas must possess an appropriate type of protection Lines used in hazardous areas must meet the necessary safety related characteristic quantities Direct Voltage A terminal to which or from which a direct current or voltage may be applied or supplied Alternating Voltage A terminal to which or from which an alternating sine Wave current or voltage may be applied or supplied Grounded Terminal A Grounded terminal which as far as the operator is connected is already grounded by means of earth grounding Protective grounding Earth Terminal A terminal which must be connected to earth ground prior to making any other connection to the equipment Equipotential connection Earth Bonding A connection made to the plant grounding system which may be of type e g neutral star
31. to set display mode Pushing M will select this menu when the main menu item number is 1 LCD displays as below Basic Settings Display Diagnostics Service Info Push OK you get 2 1 Display Value Enter display mode set with OK LCD displays as below Display Value Distance gt People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Push OK you can select different display types of the measured value as shown below Display Value 2 1 Shut off Map Distance Scaled Height Current Percent Move arrow to point to the type you want confirm it with OK 2 2 LCD Contrast Adjustments Pushing amp will enter this menu when the menu item is 2 1 LCD displays as below LCD Contrast Adjust Adjust the B W contrast by pressing OK LCD displays as below LCD Contrast 38 People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group Increase contrast with t decrease contrast with onfirm with OK 3 Diagnostics The running status of the sensor can be provided by the menu diagnostics and furthermore sensor testing can be done Pushing to select this menu when the main menu item number is 2 LCD displays as below Basic Settings Display Diagnostics Service Info Push OK you get 3 1 Peak Values Peak values record the maximum and minimum distance The records can be cleared to zero at menu 4 4 Peak Values 3 1 Distance min
32. trument for intrinsically safe version 20mA HART 4 wire Power supply and current signal are carried by two 2 wire connection cables respectively See the Technical Specifications of this guide for detailed requirement on People are our prime movers RLT Instrumentation Pvt Ltd Unit of RLT Group power supply Earth connected current output can be used for standard version of level instruments while the explosion proof version must be operated with a floating current output Both instruments and earth terminals should be connected with ground firmly and securely Normally you can either choose to connect with the earth terminal on vessel or adjacent ground in case of plastic vessels Cable Connection General Introduction 4 20mA HART Standard 2 wire cable with outside diameter of 5 9mm which assures the seal effect of cable entry can be used as feeder cable You are recommended to use screened cables in the event of electromagnetic Connection cable with special earth wire can be used as feeder cable Connection cable with special earth wire can be used as feeder cable 20mA HART 4 wire Shielding amp Grounding The two ends of shielded cable must be connected with earth terminal The shielded cable must be connected with inner earth terminal directly inside the transducer while the outside earth terminal on housing must be connected with ground In the event of Earth connected current the shielding side of shielded cable
33. version Voltage 24 26 28 30 32 34 36 V Characteristic Parameters Blanking Distance LTU551 LTU552 LTU553 Max Measurement Distance LTUS551 LTU552 LTU553 Ultrasonic Frequency LTUS51 LTU552 LTUS553 Measurement Interval Adjustment Time Beam Angle LTU551 552 LTUS553 Resolution of Display Accuracy Temp for storage Transport Process Temp Probe Relative Humidity 0 25mm 0 4m 0 5m Liquids 4m 8m 15m 55 KHz 55 KHz 35 KHz gt 2S Depend on Parameter settings gt 3S Depend on parameter settings 5 5 3 Imm 2mm or 0 2 of the empty calibration 40 70 C 40 80 C lt 95 53 People are our prime movers Pressure Vibration Resistance RLT Instrumentation Pvt Ltd Unit of RLT Group Up to 3 Bar for LTU551 LTU552 and 2 5 Bar for LTU553 Mechanical Vibration 10 m s 10 1500 Hz Note mentioned as under standard temperature and pressure 1 Correct level measurement result needs longer time to be presented than usual in the event of drastic level changes Maintenance Exterior Cleaning Please note the following points when cleaning the device e The Cleaning agents used should not attach the surface and the seals e Mechanical damage to the membrane e g due to pointed objects must be avoided e Observe degree of protection See therefore nameplate if necessary Trouble Shooting LCD Display Information
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