KROHNE OPTISWITCH 3100 C Handbook
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KROHNE OPTISWITCH 3100 C Handbook

Vibrating level switch
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OPTISWITCH 3100 C
Handbook
Vibrating Level Switch
Relay (DPDT)

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Summary of Contents for KROHNE OPTISWITCH 3100 C

  • Page 1 OPTISWITCH 3100 C Handbook Vibrating Level Switch Relay (DPDT)

  • Page 2: Table Of Contents

    Exchanging the electronics module ................22 How to proceed if a repair is necessary ................23 Dismount..........................24 Dismounting steps......................24 Disposal ......................... 24 Supplement ..........................25 Technical data ........................ 25 Dimensions ........................28 Trademark ........................31 OPTISWITCH 3100 C • Relay (DPDT)
  • 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: 2018-11-22 OPTISWITCH 3100 C • Relay (DPDT)

  • Page 4: 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. OPTISWITCH 3100 C • Relay (DPDT)

  • Page 5: For Your Safety

    During work on and with the device, the required personal protective equipment must always be worn. Appropriate use The OPTISWITCH 3100 C 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: Safety Label On The Instrument

    The EU conformity declaration can be found on our homepage. SIL conformity OPTISWITCH 3100 C meets the requirements to the functional safety according to IEC 61508. Further information is available in the Safety Manual "OPTISWITCH 3XXX".

  • Page 7: Product Description

    Principle of operation Application area OPTISWITCH 3100 C is a point level sensor with tuning fork for point level detection. It is designed for industrial use in all areas of process technology and is preferably used for bulk solids.

  • Page 8: Adjustment

    Solid detection in water If OPTISWITCH 3100 C was ordered for solids detection in water, the tuning fork is set to the density of water. In air or when immersed in water (density: 1 g/cm³/0.036 lbs/in), OPTISWITCH 3100 C signals "uncovered".
  • Page 9 Technical data - Ambient conditions" • Relative humidity 20 … 85 % Lifting and carrying With instrument weights of more than 18 kg (39.68 lbs) suitable and approved equipment must be used for lifting and carrying. OPTISWITCH 3100 C • Relay (DPDT)

  • Page 10: Mounting

    Switching point In general, OPTISWITCH 3100 C can be installed in any position. The instrument only has to be mounted in such a way that the vibrating element is at the height of the desired switching point.

  • Page 11: Mounting Instructions

    4 Mounting Fig. 2: Measures against moisture ingress Transport Do not hold OPTISWITCH 3100 C on the vibrating element. Espe- cially with flange and tube versions, the sensor can be damaged by the weight of the instrument. Remove the protective cover just before mounting. Pressure/Vacuum The process fitting must be sealed if there is gauge or low pressure in the vessel. Before use, check if the sealing material is resistant against the measured product and the process temperature.
  • Page 12 To achieve a very precise switching point, you can install OPTIS- WITCH 3100 C horizontally. However, if the switching point can have a tolerance of a few centimeters, we recommend mounting OPTIS- WITCH 3100 C approx. 20° inclined to the vessel bottom to avoid buildup. OPTISWITCH 3100 C • Relay (DPDT)
  • Page 13 Fig. 4: Horizontal mounting Inflowing medium If OPTISWITCH 3100 C is mounted in the filling stream, unwanted false measurement signals can be generated. For this reason, mount OPTISWITCH 3100 C at a position in the vessel where no disturbanc- es, e.g. from filling openings, agitators, etc., can occur. Product flow To make sure the tuning fork of OPTISWITCH 3100 C generates as little resistance as possible to product flow, mount the sensor so that the surfaces are parallel to the product movement.
  • Page 14 Marking on top with screwed version Baffle protection against In applications such as grit chambers or settling basins for coarse falling rocks sediments, the vibrating element must be protected against damage with a suitable baffle. This baffle must be manufactured by you. > 125 mm (> 5") Fig. 7: Baffle for protection against mechanical damage OPTISWITCH 3100 C • Relay (DPDT)

  • Page 15: Connecting To Power Supply

    In hazardous areas, use only approved cable connections for OPTIS- WITCH 3100 C. 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. OPTISWITCH 3100 C • Relay (DPDT)

  • Page 16: Connection Procedure

    10. If necessary, carry out a fresh adjustment 11. Screw the housing lid back on The electrical connection is finished. Wiring plan, single chamber housing The following illustrations apply to the non-Ex as well as to the Ex-d version. OPTISWITCH 3100 C • Relay (DPDT)
  • Page 17 Stainless steel (not with Ex d) Filter element for pressure compensation (not with Ex d) Wiring plan We recommend connecting OPTISWITCH 3100 C in such a way that the switching circuit is open when there is a level signal, line break or failure (safe state).

  • Page 18: Setup

    (1) It is already preset and must only be modified in special cases. By default, the potentiometer of OPTISWITCH 3100 C is set to the right stop (> 0.02 g/cm³ or 0.0008 lbs/in³). In case of very light-weight solids, turn the potentiometer to the left stop (> 0.008 g/cm³ or 0.0003 lbs/in³).

  • Page 19: Function Table

    (6) (7) Relay deenergized Mode of operation min. Dry run protection (6) (7) Relay energized Green Mode of operation min. Dry run protection (6) (7) Relay deenergized Failure of the supply volt- (min./max. mode) (6) (7) Relay deenergized OPTISWITCH 3100 C • Relay (DPDT)
  • Page 20 6 Setup Level Switching status Control lamp Fault (6) (7) Relay deenergized flashes red OPTISWITCH 3100 C • Relay (DPDT)

  • Page 21: Maintenance And Fault Rectification

    Check the vibrating element and the sensor for buildup ement and remove the buildup if there is any. Wrong mode selected Set the correct mode with the mode switch (overflow protection, dry run protection). Wiring should be carried out according to the closed-circuit principle. OPTISWITCH 3100 C • Relay (DPDT)

  • Page 22: Exchanging The Electronics Module

    6. Pull out the old electronics module 7. Compare the new electronics module with the old one. The type label of the electronics module must correspond to that of the old electronics module. This applies particularly to instruments used in hazardous areas. OPTISWITCH 3100 C • Relay (DPDT)

  • Page 23: How To Proceed If A Repair Is Necessary

    15. Screw the housing lid back on The electronics exchange is now finished. How to proceed if a repair is necessary If it is necessary to repair the instrument, please contact the responsi- ble Krohne agency. OPTISWITCH 3100 C • Relay (DPDT)

  • Page 24: Dismount

    With Ex instruments, the housing cover may only be opened if there is no explosive atmosphere present. Disposal The device is made of recyclable materials. For this reason, it should be disposed of by a specialist recycling company. Observe the ap- plicable national regulations. OPTISWITCH 3100 C • Relay (DPDT)

  • Page 25: Supplement

    1½ NPT Instrument weight (depending on pro- 0.8 … 4 kg (0.18 … 8.82 lbs) cess fitting) Max. lateral load 600 N (135 lbf) Fig. 13: Max. lateral load alongside fork side (narrow fork side) OPTISWITCH 3100 C • Relay (DPDT)
  • Page 26 -1 … 25 bar/-100 … 2500 kPa (-14.5 … 363 psig) OPTISWITCH 3100 C of 316L -50 … +150 °C (-58 … +302 °F) Process temperature (thread or flange -50 … +250 °C (-58 … +482 °F) temperature) with temperature adapter (option) OPTISWITCH 3100 C • Relay (DPDT)
  • Page 27 U >60 V DC, the ambient temperature can be max. 50 °C/122 °F) Max. power consumption 8 VA (AC), 1.5 W (DC) Electrical protective measures Protection rating IP66/IP67 (NEMA Type 4X) Altitude above sea level up to 5000 m (16404 ft) OPTISWITCH 3100 C • Relay (DPDT)

  • Page 28: Dimensions

    ø 77mm (2.72") ø 84mm ø 77mm (3.03") (3.31") (3.03") M20x1,5/ M20x1,5/ M20x1,5/ M20x1,5 ½ NPT ½ NPT ½ NPT Fig. 15: Housing versions Plastic single chamber Stainless steel single chamber Aluminium - single chamber OPTISWITCH 3100 C • Relay (DPDT)
  • Page 29 9 Supplement G1½ ø 43 mm (1.69") Fig. 16: OPTISWITCH 3100 C, threaded version G1½ (DIN ISO 228/1) OPTISWITCH 3100 C • Relay (DPDT)
  • Page 30 9 Supplement ø 34 mm (1.34") Fig. 17: Temperature adapter OPTISWITCH 3100 C • Relay (DPDT)

  • Page 31: Trademark

    9 Supplement Trademark All the brands as well as trade and company names used are property of their lawful proprietor/ originator. OPTISWITCH 3100 C • Relay (DPDT)
  • Page 32 • Engineering, commissioning, calibration, maintenance and train- ing services Head Office KROHNE Messtechnick GmbH Ludwig-Krohne-Straße 5 47058 Duisburg (Germany) Tel.: +49 (0) 203 301 0 Tel.: +49 (0) 203 301 10389 info@krohne.de The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...

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