SICK LFV 310 Operating Instructions Manual
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SICK LFV 310 Operating Instructions Manual

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OPERATING INSTRUCTIONS
LFV 310
Contactless electronic switch
GB

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Summary of Contents for SICK LFV 310

  • Page 1 OPERATING INSTRUCTIONS LFV 310 Contactless electronic switch...

  • Page 2: Table Of Contents

    Exchanging the electronics .................... 24 How to proceed if a repair is necessary ................25 Dismount..........................26 Dismounting steps......................26 Disposal ......................... 26 Supplement ..........................27 Technical data ........................ 27 Dimensions ........................33 Trademark ........................36 LFV 310 • Contactless electronic switch...
  • Page 3 Contents 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: 2024-01-18 LFV 310 • Contactless electronic switch...

  • Page 4: About This Document

    List 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. Disposal This symbol indicates special instructions for disposal. LFV 310 • Contactless electronic switch...

  • Page 5: For Your Safety

    During work on and with the device, the required personal protective equipment must always be worn. Appropriate use The LFV 310 is a sensor for point level detection. 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 6: Installation And Operation In The Usa And Canada

    Installations in Canada shall comply with the relevant requirements of the Canadian Electrical Code (CEC Part I) (Canada). Safety instructions for Ex areas For applications in hazardous areas (Ex), only devices with corre- sponding Ex approval may be used. Observe the Ex-specific safety instructions. These are an integral part of the device documentation and are enclosed with every device with Ex approval. LFV 310 • Contactless electronic switch...

  • Page 7: Product Description

    – If necessary, further certificates Information: Optional instrument features are also described in this operating instructions manual. The respective scope of delivery results from the order specification. Constituent parts The LFV 310 consists of the components: • Housing lid • Housing with electronics •...

  • Page 8: Principle Of Operation

    Typical applications are overfill and dry run protection. With its tuning fork of only 40 mm length, LFV 310 can also be mounted e.g. in pipe- lines from DN 32. The small tuning fork allows use in vessels, tanks and pipes. Thanks to its simple and robust measuring system, LFV 310 is virtually unaffected by the chemical and physical properties of the liquid.

  • Page 9: Packaging, Transport And Storage

    Flanges Screwed flanges are available in different versions according to the following standards: DIN 2501, EN 1092-1, BS 10, ASME B 16.5, JIS B 2210-1984, GOST 12821-80. Plug connector For connecting the sensors with a separator to voltage supply or sig- nal processing, the sensors are also available with plug connectors. The following plug connectors are available: LFV 310 • Contactless electronic switch...
  • Page 10 3 Product description • M12 x 1 • ISO 4400 • Harting HAN 7D • Harting HAN 8D • Amphenol-Tuchel LFV 310 • Contactless electronic switch...

  • Page 11: Mounting

    Switching point In general, LFV 310 can be installed in any position. The instrument only has to be mounted in such a way that the tuning fork is at the height of the desired switching point.
  • Page 12 Switching point approx. 27 mm (1.06 in) Fig. 3: Horizontal mounting Switching point Marking with screwed version, facing up Fig. 4: Horizontal installation (recommended mounting position, particularly for adhesive products) Switching point Marking with screwed version, facing up In the case of flange versions, the fork is aligned as follows. LFV 310 • Contactless electronic switch...
  • Page 13 The vibrating level switch is a measuring instrument and must be treated accordingly. Bending the vibrating element will destroy the instrument. Warning: The housing must not be used to screw the instrument in! Applying tightening force can damage internal parts of the housing. Use the hexagon above the thread for screwing in. LFV 310 • Contactless electronic switch...

  • Page 14: Mounting Instructions

    Welded socket LFV 310 has a defined thread starting point. This means that every LFV 310 is in the same fork position after being screwed in. Remove therefore the supplied seal from the thread of LFV 310. This seal is not required when using a welded socket with O-ring in front.
  • Page 15 Inflowing medium If LFV 310 is mounted in the filling stream, unwanted false measure- ment signals can be generated. For this reason, mount LFV 310 at a position in the vessel where no disturbances, e.g. from filling open- ings, agitators, etc., can occur. To make sure the tuning fork of LFV 310 generates as little resistance...

  • Page 16: Connecting To Power Supply

    In hazardous areas, use only approved cable connections for LFV 310. Take note of the corresponding installation regulations for Ex applica- Connection cable tions. for Ex applications Cover all housing openings conforming to standard according to EN 60079-1. LFV 310 • Contactless electronic switch...

  • Page 17: Connection Procedure

    The following illustrations apply to the non-Ex as well as to the Ex d version. Housing overview Fig. 7: Material versions, single chamber housing Plastic (not with Ex d) Aluminium Stainless steel (electro-polished) Filter element for pressure compensation (not with Ex d) LFV 310 • Contactless electronic switch...
  • Page 18 DIL switch for mode adjustment DIL switch for switching point adaptation Ground terminal Connection terminals Wiring plan We recommend connecting LFV 310 in such a way that the switching circuit is open when there is a level signal, line break or failure (safe state). Information: The contactless electronic switch is always shown in non-operative condition.
  • Page 19 5 Connecting to power supply Fig. 9: Wiring plan, single chamber housing LFV 310 • Contactless electronic switch...

  • Page 20: Setup

    DIL switch for mode adjustment - A/B (2) • DIL switch for adjustment of the density range (3) Note: Always immerse the tuning fork of LFV 310 in a liquid to test its func- tion. Do not test the function of LFV 310 with your hand. This can damage the sensor. Adjustment elements Fig. 10: Oscillator SWE60C - Contactless electronic switch...

  • Page 21: Function Table

    Mode A Overflow protec- tion Switch closed Green Mode A Overflow protec- tion Switch open Mode B Dry run protection Switch closed Green Mode B Dry run protection Switch open Failure of the sup- ply voltage (mode A/B) Switch open LFV 310 • Contactless electronic switch...
  • Page 22 6 Setup Level Switching status Control lamp Fault Switch open flashes red LFV 310 • Contactless electronic switch...

  • Page 23: Maintenance And Fault Rectification

    The operator of the system is responsible for taking suitable meas- tion occurs ures to rectify faults. Causes of malfunction The device offers maximum reliability. Nevertheless, faults can occur during operation. These may be caused by the following, e.g.: • Sensor • Process • Voltage supply • Signal processing Fault rectification The first measure to take is to check the output signal. In many cases, the causes can be determined this way and the faults quickly rectified. LFV 310 • Contactless electronic switch...

  • Page 24: Exchanging The Electronics

    You can find all the information you need to carry out an electronics exchange in the handbook of the new electronics module. In general, all electronics modules of series SW60 can be inter- changed. If you want to use an electronics module with a different signal output, you carry out the complete setup. You find the neces- sary, suitable operating instruction on our homepage. LFV 310 • Contactless electronic switch...

  • Page 25: How To Proceed If A Repair Is Necessary

    7 Maintenance and fault rectification How to proceed if a repair is necessary If a repair should be necessary, please contact your contact person. LFV 310 • Contactless electronic switch...

  • Page 26: Dismount

    If personal data is stored on the old device to be disposed of, delete it before disposal. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. LFV 310 • Contactless electronic switch...

  • Page 27: Supplement

    See chapter "Dimensions" Instrument weight (depending on pro- 0.8 … 4 kg (0.18 … 8.82 lbs) cess fitting) Surface quality Ʋ Standard 3 µm (1.18 in) Ʋ Hygienic version (3A) < 0.8 µm (3.15 in) Process fittings Ʋ Pipe thread, cylindrical (DIN 3852-A) G¾, G1 Ʋ Pipe thread, conical (ASME B1.20.1) ¾ NPT, 1 NPT Ʋ Flanges DIN from DN 25, ASME from 1" LFV 310 • Contactless electronic switch...
  • Page 28 Ʋ Product temperature +18 … +30 °C (+64 … +86 °F) Ʋ Product density 1 g/cm³ (0.036 lbs/in³) (water) Ʋ Product viscosity 1 mPa s Ʋ Superimposed pressure 0 kPa Ʋ Sensor installation Vertically from top Ʋ Density selection switch ≥ 0.7 g/cm³ Measurement accuracy Deviation ± 1 mm (0.04 in) LFV 310 • Contactless electronic switch...
  • Page 29 (0,022) (0,029) (0,036) (0,043) (0,051) (0,058) (0,065) (0,072) (0,079) (0,087) Fig. 12: Influence of the product density on the switching point Shifting of the switching point in mm (in) Product density in g/cm³ (lb/in³) Switch position ≥ 0.5 g/cm³ (0.018 lb/in³) Switch position ≥ 0.7 g/cm³ (0.025 lb/in³) Switching point at reference conditions (notch) Tuning fork LFV 310 • Contactless electronic switch...
  • Page 30 Maximum allowable operating pressure 100 bar/10000 kPa (1450 psig) or 1.5 times process pressure The function of the instrument is ensured up to an operating pressure of 100 bar/10000 kPa (1450 psig) at a maximum process temperature of +50 °C (+122 °F) (only with threaded versions). Process temperature (thread or flange temperature) Ʋ LFV 310 of 316L -50 … +150 °C (-58 … +302 °F) Ʋ LFV 310 with temperature adapter -50 … +250 °C (-58 … +482 °F) (option) LFV 310 • Contactless electronic switch...
  • Page 31 (212 °F) (302 °F) (392 °F) (482 °F) Fig. 16: Process temperature - Process pressure with switch position ≥ 0.5 g/cm³ (sensitivity switch) Process pressure in bar (psig) Process temperature in °C (°F) SIP process temperature (SIP = Sterilization in place) PFA and ECTFE coatings are not suitable for SIP cleaning Vapour stratification up to 2 h +150 °C (+302 F) LFV 310 • Contactless electronic switch...
  • Page 32 Ʋ Min. 10 mA Ʋ Max. 400 mA (with I > 300 mA the ambient temperature can be max. 60 °C/140 °F) max. 4 A up to 40 ms (not WHG specified) Electrical protective measures Protection rating IP66/IP67 acc. to IEC 60529, Type 4X acc. to NEMA Altitude above sea level up to 5000 m (16404 ft) Overvoltage category Pollution degree Protection rating (IEC 61010-1) LFV 310 • Contactless electronic switch...

  • Page 33: Dimensions

    ø 79 mm (3.15") (3.03") M20x1,5 M20x1,5/ M20x1,5/ M20x1,5/ M20x1,5 ½ NPT ½ NPT ½ NPT M20x1,5/ ½ NPT Fig. 17: Housing versions Plastic single chamber Stainless steel single chamber (electropolished) Aluminium - single chamber LFV 310 • Contactless electronic switch...
  • Page 34 G¾A, ¾"NPT G1A, 1"NPT ø 33,7 mm (1.33") Fig. 18: LFV 310 Thread Clamp Cone DN 25 Slotted nut DN 40 Flange Tuchenhagen Varivent 19 mm (0.75 in) Flansch aus Monel: 34,8 mm (13.7 in) LFV 310 • Contactless electronic switch...
  • Page 35 9 Supplement LFV 310, options Fig. 19: Options Temperature adapter LFV 310 • Contactless electronic switch...

  • Page 36: Trademark

    9 Supplement Trademark All the brands as well as trade and company names used are property of their lawful proprietor/ originator. LFV 310 • Contactless electronic switch...
  • Page 37 Notes LFV 310 • Contactless electronic switch...
  • Page 38 Notes LFV 310 • Contactless electronic switch...
  • Page 39 Notes LFV 310 • Contactless electronic switch...
  • Page 40 Phone +65 6744 3732 E-Mail sales.gsg@sick.com E-Mail office@sick.com.gr E-Mail sales.gsg@sick.com Hong Kong Slovakia Phone +852 2153 6300 Phone +421 482 901 201 E-Mail ghk@sick.com.hk E-Mail mail@sick-sk.sk Detailed addresses and further locations at www.sick.com SICK AG | D-79183 Waldkirch | Germany | www.sick.com 35910-EN-240122...

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