Siemens SITRANS LG270 Operating Instructions Manual
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Siemens SITRANS LG270 Operating Instructions Manual

Profibus pa rod and cable probe
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Guided Wave Radar
SITRANS LG270
Profibus PA
Rod and cable probe
-20 ... +250 °C
Operating Instructions • 01/2020

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Summary of Contents for Siemens SITRANS LG270

  • Page 1 Guided Wave Radar SITRANS LG270 Profibus PA Rod and cable probe -20 … +250 °C Operating Instructions • 01/2020...
  • Page 2 SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 3: Table Of Contents

    Saving the parameterisation data ................... 54 Set up with other systems ....................55 DD adjustment programs ....................55 Diagnostics and servicing ....................56 Maintenance ........................56 Diagnosis memory ......................56 Status messages ......................57 Rectify faults ........................60 PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 4 11.3 Dimensions ........................84 11.4 Trademark ........................89 Safety instructions for Ex areas Take note of the Ex specific safety instructions for Ex applications. These instructions are attached as documents to each instrument with Ex approval and are part of the operating instructions. Editing status: 2020-01-24 SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 5: About This Document

    The dot set in front indicates a list with no implied sequence. Sequence of actions Numbers set in front indicate successive steps in a procedure. Battery disposal This symbol indicates special information about the disposal of bat- teries and accumulators. PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 6: For Your Safety

    During work on and with the device, the required personal protective equipment must always be worn. Appropriate use SITRANS LG270 is a sensor for continuous level measurement. You can find detailed information about the area of application in chapter "Product description". Operational reliability is ensured only if the instrument is properly used according to the specifications in the operating instructions manual as well as possible supplementary instructions.

  • Page 7: Eu Conformity

    English language. Installations in the US shall comply with the relevant requirements of the National Electrical Code (ANSI/NFPA 70). Installations in Canada shall comply with the relevant requirements of the Canadian Electrical Code. PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 8: Product Description

    • Optional accessory The further scope of delivery encompasses: • Documentation – Operating instructions SITRANS LG270 – Instructions for optional instrument features – Ex-specific "Safety instructions" (with Ex versions) – If necessary, further certificates Information: Optional instrument features are also described in this operating instructions manual.

  • Page 9: Principle Of Operation

    14 Hardware and software version Principle of operation Application area The SITRANS LG270 is a level sensor with cable or rod probe for continuous level or interface measurement, especially for applications in high temperatures up to +250° C (482° F).
  • Page 10 Distance to the interface d2 Distance to the level TS Thickness of the upper medium (d1 - d2) h1 Height - Interface h2 Height - Level L1 Lower medium L2 Upper medium L3 Gas phase SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 11: Packaging, Transport And Storage

    Ascertained transit damage or con- cealed defects must be appropriately dealt with. Storage Up to the time of installation, the packages must be left closed and stored according to the orientation and storage markings on the outside. PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 12: Accessories

    DIN 2501, EN 1092-1, BS 10, ASME B 16.5, JIS B 2210-1984, GOST 12821-80. Centering If you mount the SITRANS LG270 in a bypass tube or standpipe, you have to avoid contact to the bypass tube by using a spacer at the probe end.

  • Page 13: Mounting

    Prior to setup you have to replace these protective caps with ap- proved cable glands or close the openings with suitable blind plugs. Note: Process conditions For safety reasons, the instrument must only be operated within the permissible process conditions. You can find detailed information on PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 14: Mounting Instructions

    Mounting instructions Installation position Mount SITRANS LG270 in such a way that the distance to vessel installations or to the vessel wall is at least 300 mm (12 in). In non- metallic vessels, the distance to the vessel wall should be at least 500 mm (19.7 in).
  • Page 15 If this is not possible, use short sockets with small diameter. Higher sockets or sockets with a bigger diameter can generally be used. They can, however, increase the upper dead zone. Check if this is relevant for your measurement. In such cases, always carry out a false signal suppression after mounting. You can find further information under "Setup procedure". PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 16 Fig. 7: Socket must be installed flush Unfavourable mounting 2 Socket flush - optimum mounting Welding work Before beginning the welding work, remove the electronics module from the sensor. By doing this, you avoid damage to the electronics through inductive coupling. Do not mount the instruments in or above the filling stream. Make sure Inflowing medium that you detect the product surface, not the inflowing product. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 17 Measuring probes can be mounted in bypass tubes up to DN 200. For bypass tubes, select the probe length such that the dead zone of the probe is above and below the lower lateral filling openings of the bypass tube. You can thus measure the complete range of the medium in the bypass tube (h). When designing the bypass tube, keep the dead zone of the probe in mind and select the length of the bypass tube above the upper lateral filling opening accordingly. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 18 If durability is no problem, we recommend the use of uncoated metal standpipes. When the SITRANS LG270 is used in bypass tubes, contact with the tube wall must be avoided. We recommend for this purpose a cable probe with centering weight.
  • Page 19 If durability is no problem, we recommend the use of uncoated metal standpipes. When the SITRANS LG270 is used in standpipes, contact with the tube wall must be avoided. We recommend for this purpose a cable probe with centering weight.
  • Page 20 • The 0 % point in standpipes should be above the gravity or center- ing weight. • A false signal suppression with installed sensor is generally rec- ommended to achieve the best possible accuracy. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 21 If there is a danger of the rod probe touching the vessel wall, fasten the probe at the bottom end. Keep in mind that measurement is not possible below the fastening point. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 22 If internal installations such as struts, ladders, etc. are present on the vessel wall, the measuring probe should be mounted at least 300 mm (11.81 in) away from the vessel wall. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 23 You can find further information in the supplementary instructions of the rod extension. PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 24: Connecting To Power Supply

    Note: Prior to setup you have to replace these protective caps with ap- proved cable glands or close the openings with suitable blind plugs. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 25: Connecting

    5. Insert the cable into the sensor through the cable entry Fig. 14: Connection steps 5 and 6 Single chamber housing Double chamber housing 6. Insert the wire ends into the terminals according to the wiring plan PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 26: Wiring Plan, Single Chamber Housing

    Selection switch for instrument address For external display and adjustment unit Ground terminal for connection of the cable screening Wiring plan, double chamber housing The following illustration applies to the non-Ex, Ex-ia and Ex-d ver- sion. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 27: Set Instrument Address

    The address setting is carried out either via: • The address selection switch in the electronics compartment of the instrument (address setting via hardware) • The display and adjustment module (address setting via software) • PACTware/DTM (address setting via software) PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 28: Switch-On Phase

    PC • Status byte goes to fault value Then the actual measured value is output to the signal cable. The value takes into account settings that have already been carried out, e.g. default setting. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 29: Set Up With The Display And Adjustment Module

    Fig. 19: Installing the display and adjustment module in the electronics compart- ment of the single chamber housing Fig. 20: Installing the display and adjustment module in the double chamber housing In the electronics compartment In the connection compartment PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 30: Adjustment System

    5 s, the display returns to the main menu. The menu language is then switched over to "English". Approx. 60 minutes after the last pressing of a key, an automatic reset to measured value indication is triggered. Any values not confirmed with [OK] will not be saved. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 31: Parameter Adjustment - Quick Setup

    Switch-on phase After switching on, the SITRANS LG270 carries out a short self-test where the device software is checked. The output signal transmits a fault signal during the switch-on phase. The following information is displayed on the display and adjustment module during the startup procedure: •...
  • Page 32 Profibus PA network. Then the address must be changed to integrate additional instruments. The address setting is carried out either via: • The address selection switch in the electronics compartment of the instrument (address setting via hardware) SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 33 It can be selected from the distance units such as for example m, mm and ft. Probe length In this menu item you can enter the probe length or have the length determined automatically by the sensor system. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 34 You can choose between the following medium types: Dielectric con- Type of medium Examples stant > 10 Water-based liq- Acids, alcalis, water uids 3 … 10 Chemical mix- Chlorobenzene, nitro lacquer, aniline, tures isocyanate, chloroform < 3 Hydrocarbons Solvents, oils, liquid gas SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 35 The distance refers to the sensor reference plane (seal surface of the process fitting). Keep in mind that the max. level must lie below the dead zone. Min. adjustment level In this menu item you can enter the min. adjustment for the level. With interface measurement this is the minimum total level. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 36 "Application". Enter the requested percentage value for the min. adjustment (inter- face). Enter the respective distance value in m for the interface correspond- ing to the percentage value of the interface. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 37 The menu item "Delete" is used to completely delete an already cre- ated false signal suppression. This is useful if the saved false signal suppression no longer matches the metrological conditions in the vessel. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 38 If the socket is lower than the up- per edge of the vessel, this value can also be negative. Fig. 22: Vessel height and socket correction value D Vessel height +h Positive socket correction value -h Negative socket correction value SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 39 Level measured value min. Measured level value max. AI FB1 - damping To damp process-dependent measured value fluctuations, you can set a time of 0 … 999 s in this menu item. The damping applies to the level and interface measurement. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 40 The submenu points are described below. Menu language This menu item enables the setting of the requested national lan- guage. In delivery status, the sensor is set to English. Displayed value 1 In this menu item, you define the indication of the measured value on the display. You can display two different measured values. In this menu item, you define measured value 1. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 41 In delivery status, the lighting is switched on. 6.4.3 Diagnostics Sensor status In this menu item, the device status is displayed. When the instrument displays a failure message, you can here get detailed information on the failure reason. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 42 The respective min. and max. measured values are saved in the sensor. The values are displayed in the menu item "Peak values Ad- ditional". This menu item displays the peak values of the electronics tempera- ture as well as the dielectric constant. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 43 The simulation is terminated automatically 60 minutes after the activa- tion of the simulation. Echo curve memory With the menu item "Setup" the echo curve it is possible to save at the time of setup. This is generally recommended; for using the Asset PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 44 After a reset, certain parameter adjustments made by the user are Reset reset. Note: After this menu window, the reset process is carried out. No further safety inquiry follows. The following reset functions are available: SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 45 0.0 s Integration time - Interface 0.0 s Linearisation type Linear Linearisation - Socket correction 0 mm Linearisation - Vessel height Probe length AI FB1 Tag Descriptor AI FB1 Channel Primary Value (lin. percent level) PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 46 Device memory - Measured value memory - Recording in time 3 min. interval Device memory - Measured value memory - Recording with 15 % measured value difference Device memory - Measured value memory - Start with meas- Not active ured value SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 47 AI FB1 scaling PV Scale (min.) AI FB3 scaling PV Scale (max.) 100 % AI FB3 Lin. Type Linear AI FB3 Out Scale Unit AI FB3 Out Scale Decimal Point #.## AI FB3 Out Scale (min.) PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 48 Before the data are stored in the sensor, a check is carried out to determine if the data fit the sensor. If the data do not fit, a fault signal is triggered or the function is blocked. When data are being written into the sensor, the display shows which instrument type the data originate from and which TAG-no. this sensor had. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 49 PC. Profibus Ident Number In this menu item, the Profibus ident number of your sensor is dis- played. Sensor characteristics In this menu item, the features of the sensor such as approval, pro- cess fitting, seal, measuring range, electronics, housing and others are displayed. PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 50: Saving The Parameterisation Data

    In the display and adjust- If the instrument is equipped with a display and adjustment module, ment module the parameter adjustment data can be saved therein. The procedure is described in menu item "Copy device settings". SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 51: Setup With Pactware

    A description of the update procedure is also available in the Internet. The further setup steps are described in the online help of PACTware and the DTMs. PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 52: Set Up With The Quick Setup

    The quick setup is another option for parameter adjustment of the sensor. It allows fast, convenient adjustment of the most important parameters to adapt the sensor quickly to standard applications. To use it, select the function "Quick setup" in the start screen. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 53 Extended adjustment Maintenance Quick setup With quick setup you can carry out the parameter adjustment of SITRANS LG270 for your application in just a few simple steps. The assistant-driven adjustment includes the basic settings for simple, reliable setup and commissioning. Information: If the function is inactive, then possibly no instrument is connected.

  • Page 54: Saving The Parameterisation Data

    Saving the parameterisation data We recommend documenting or saving the parameterisation data via PACTware. That way the data are available for multiple use or service purposes. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 55: Set Up With Other Systems

    Set up with other systems DD adjustment programs Device descriptions as Enhanced Device Description (EDD) are available for DD adjustment programs such as, for example, AMS↑ and PDM. PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 56: Diagnostics And Servicing

    • Modification of a parameter • Switch-on and switch-off times • Status messages (according to NE 107) • Error messages (according to NE 107) The data are read out via a PC with PACTware/DTM or the control system with EDD. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 57: Status Messages

    This status message is always active. It cannot be deactivated by the user. Function check: The instrument is being worked on, the measured value is temporarily invalid (for example during simulation). This status message is inactive by default. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 58 Disconnect operating voltage briefly munication Communication Send instrument for repair error F125 Temperature of the electronics in the Check ambient temperature Bit 7 non-specified range Impermissible Insulate electronics electronics tem- Use instrument with higher temper- perature ature range SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 59 S601 Level echo in the close range not Reduce level Bit 24 available Overfilling 100 % adjustment: Increase value Check mounting socket Remove possible interfering signals in the close range Use coaxial probe PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 60: Rectify Faults

    The operator of the system is responsible for taking suitable meas- tion occurs ures to rectify faults. The first measures are: Fault rectification • Evaluation of fault messages • Checking the output signal • Treatment of measurement errors SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 61 Amplitude or position of a false signal Determine the reason for the changed has changed (e.g. buildup); false signal false signals, carry out false signal sup- time suppression no longer matches pression, e.g. with buildup PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 62 Measured value remains re- Stored false signals in this position are Delete false signal suppression producible in one position larger than the level echo Carry out a new false signal suppression during emptying time SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 63 Amplitude or position of a false signal has Determine the reason for the changed false changed (e.g. condensation, buildup); false signals, carry out false signal suppression, signal suppression no longer matches ac- e.g. condensation time tual conditions PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 64 Carry out false signal suppression or in- jumps sporadically the antenna crease false signal suppression in the close towards 100 % dur- range by editing ing emptying With bulk solids use radar sensor with purg- ing air connection or flexible antenna cover time SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 65: Exchanging The Electronics Module

    To loosen the rod or cable you need a fork spanner with spanner width 13. 1. Loosen the rod or cable by applying a fork spanner to the flat surfaces (SW 13), provide counterforce with another fork spanner (SW 13) 2. Unscrew the loosened rod or cable manually. 3. Place the enclosed new double washer onto the thread. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 66 6. Cable with gravity weight: Shift the cable according to the drawing into the gravity weight 7. Cable with gravity weight: Fasten cable with the pins, torque 7 Nm (5.16 lbf ft) Cable with centering weight: Fasten cable with the pins, torque 7 Nm (5.16 lbf ft) and fix the clamping part on the centering weight. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 67: Software Update

    Instruments with approvals can be bound to certain software versions. Therefore make sure that the approval is still effective after a software update is carried out. You can find detailed information in the download area on our home- page: www.siemens.com/sitranslg. How to proceed if a repair is necessary If it is necessary to repair the instrument, please contact Siemens. You find the locations on "www.siemens.com/processautomation". PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 68: Dismount

    Pass the instrument directly on to a specialised recycling company and do not use the municipal collecting points. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 69: Supplement

    Ʋ Supporting material 316L Ʋ Glass potting Borosilicate glass GPC 540 Ʋ Contacts Alloy C22 (2.4602) PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 70 Sensor address 126 (default setting) Damping (63 % of the input variable) 0 … 999 s, adjustable Profibus PA profile 3.02 Number of FBs with AI (function blocks with analogue input) Default values Ʋ 1. FB Primary Value (filling height linearized in %) SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 71 Ʋ Medium Water/Oil (dielectric constant ~2.0) Ʋ Mounting Probe end does not touch the vessel bottom Sensor parameter adjustment No gating out of false signals carried out With interface measurement = 2.0 PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 72 Fig. 30: Measuring ranges - SITRANS LG270 Reference plane Probe length Measuring range (default setting refers to the measuring range in water) Upper dead zone (see following diagrams - grey section) Lower dead zone (see following diagrams - grey section) Typical deviation - Interface measure- ±...
  • Page 73 -5 mm (-0.197") 0,08 m 0,3 m 0,015 m (3.15") (11.811") (0.591") Fig. 31: Deviation SITRANS LG270 in rod version in water Dead zone (no measurement possible in this area) Probe length 25 mm (0.984") 2 mm (0.079") -2 mm (0.079")
  • Page 74 (3.15 ") Fig. 34: Deviation SITRANS LG270 in cable version (2 mm/0.079 in), in medium oil Dead zone (no measurement possible in this area) When using a centering weight, it is only possible to measure up to the upper edge of the cerntering weight.
  • Page 75 0,15 m (5.906") Fig. 35: Deviation SITRANS LG270 in cable version (4 mm/0.157 in), in medium oil Dead zone (no measurement possible in this area) When using a centering weight, it is only possible to measure up to the upper edge of the cerntering weight.
  • Page 76 The measurement error from the process conditions is in the specified pressure and temperature range of below 1 %. Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk solids applications, until the output signal has taken for the first time 90 % of the final value (IEC 61298-2). SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 77 – ● steel Wire cross-section (spring-loaded terminals) Ʋ Massive wire, stranded wire 0.2 … 2.5 mm² (AWG 24 … 14) Ʋ Stranded wire with end sleeve 0.2 … 1.5 mm² (AWG 24 … 16) PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 78 Date format Day.Month.Year Time format 12 h/24 h Time zone, factory setting Max. rate deviation 10.5 min/year Additional output parameter - Electronics temperature Range -40 … +85 °C (-40 … +185 °F) Resolution < 0.1 K Deviation ±3 K SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 79 Ʋ by default up to 2000 m (6562 ft) Ʋ with connected overvoltage protection up to 5000 m (16404 ft) Pollution degree (with fulfilled housing protection) Protection rating (IEC 61010-1) Galvanic separation between electronics and metal housing parts PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 80: Communication Profibus Pa

    SI0181B9.GSD PA139702.GSD Cyclical data traffic The master class 1 (e.g. PLC) cyclically reads out measured values from the sensor during opera- tion. The below block diagram below shows which data can be accessed by the PLC. SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 81 Fig. 37: SITRANS LG270: Block diagram with AI FB 1 … AI FB 3 OUT values TB Transducer Block FB 1 … FB 3 Function Block Module of the PA sensors For the cyclic data traffic, SITRANS LG270 provides the following modules: • AI FB1 (OUT) – Out value of the AI FB1 after scaling •...
  • Page 82 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 Sign Significant Significant Exponent Significant (Exponent - 127) Value = (-1) (1 + Significant) Fig. 39: Data format of the measured value SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 83 - high limited 0 x 8d good (non-cascade) - ac- Lo-Lo-Alarm tive critical alarm - low limited 0 x 8e good (non-cascade) - ac- Hi-Hi-Alarm tive critical alarm - high limited PBD-51041506 SITRANS LG270 - Operating Instructions...

  • Page 84: Dimensions

    ½ NPT Fig. 41: Housing versions with protection rating IP66/IP68 (0.2 bar), (with integrated display and adjustment mod- ule the housing is 9 mm/0.35 in higher) Aluminium - single chamber Aluminium - double chamber SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 85 Fig. 42: Housing versions with protection rating IP66/IP68 (0.2 bar), (with integrated display and adjustment mod- ule the housing is 9 mm/0.35 in higher) Stainless steel single chamber (electropolished) Stainless steel single chamber (precision casting) Stainless steel double chamber housing (precision casting) PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 86 ø 20 mm (0.79") (0.79") Fig. 43: SITRANS LG270, threaded version with gravity weight (all gravity weights with thread M8 for eye-bolt) Sensor length, see chapter "Technical data" Cable ø 4 mm (0.157 in) Cable ø 2 mm (0.079 in) Max.
  • Page 87 SW 41 mm ø 2 mm / ø 4 mm (0.08") (0.16") Fig. 44: SITRANS LG270, threaded version with centering weight Sensor length, see chapter "Technical data" ø 40 mm (1.57 in) ø 45 mm (1.77 in) ø 75 mm (2.95 in) ø...
  • Page 88 SITRANS LG270, rod version SW 41 mm ø 8 mm (0.32") Fig. 45: SITRANS LG270, threaded version Sensor length, see chapter "Technical data" Max. height of the vessel insulation SITRANS LG270 - Operating Instructions PBD-51041506...

  • Page 89: Trademark

    11.4 Trademark All the brands as well as trade and company names used are property of their lawful proprietor/ originator. PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 90 Event memory 56 Quick setup 31 Factory calibration date 49 False signal suppression 37 Fault Read out info 49 – Rectification 60 Repair 67 Fault rectification 60 Replacement parts Functional principle 9 – Spacer 12 Reset 44 SITRANS LG270 - Operating Instructions PBD-51041506...
  • Page 91 Sensor characteristics 49 Sensor status 41 Simulation 43 Software addressing 28, 33 Special parameters 49 Status bytes PA output value 83 Telegram configuration 82 Type label 8 Type of medium 34 Units 33 Vessel insulation 21 PBD-51041506 SITRANS LG270 - Operating Instructions...
  • Page 92 For more information www.siemens.com/level www.siemens.com/weighing Siemens Canada Limited Subject to change without prior notice PD PA PI LW PBD-51041506 Rev. 5.0 1954 Technology Drive P.O. Box 4225 © Siemens AG 2020 Peterborough, ON K9J 7B1, Canada email: techpubs.smpi@siemens.com Printed in Canada www.siemens.com/processautomation...

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