KROHNE OPTISONIC 7300 Supplementary Instructions Manual
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KROHNE OPTISONIC 7300 Supplementary Instructions Manual

Ultrasonic gas flowmeter
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OPTISONIC 7300
Supplementary Instructions
Ultrasonic gas flowmeter
Addendum for hazardous areas.
These instructions are an extension to the OPTISONIC 7300 Quick Start and
Handbook.
© KROHNE 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04

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Summary of Contents for KROHNE OPTISONIC 7300

  • Page 1 OPTISONIC 7300 Supplementary Instructions Ultrasonic gas flowmeter Addendum for hazardous areas. These instructions are an extension to the OPTISONIC 7300 Quick Start and Handbook. © KROHNE 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 2: Table Of Contents

    3.4 Connection of signal cable to signal converter (remote version only)......25 4 Electrical connections 4.1 General ........................... 27 4.2 Cable glands ........................30 4.3 Field Wiring........................30 4.4 Non-"Ex i" I/O connections..................... 31 4.5 "Ex i" I/O connections ..................... 33 www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...
  • Page 3 5.4 Exchange of electronics unit ..................37 5.5 Service / repair information ................... 40 5.6 Form (for copying) to accompany a returned device ............. 41 5.7 Disposal .......................... 41 6 Notes 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...

  • Page 4: Introduction

    The manufacturer reserves the right to alter the content of its documents, including this disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable in any way for possible consequences of such changes. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 5: Product Liability And Warranty

    This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device. Special considerations and precautions are also described in the document, which appear in the form of icons as shown below. 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...

  • Page 6: Warnings And Symbols Used

    1.2 Manufacturer The instrument is developed and manufactured by: KROHNE Altometer Kerkeplaat 12 3313 LC Dordrecht The Netherlands For information, maintenance or service please contact your nearest local KROHNE representative. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 7: Safety Instructions For The Operator

    General • The relationship between ambient- and/or process temperature and temperature class is described in this manual. • For details of the flameproof joints, contact KROHNE Altometer. • No repairs are permitted to the flameproof joints. 1.4 Electrostatic charge CAUTION! Electrostatic charging of the meter and/or converter housing MUST be avoided.

  • Page 8: Special Notes For Safe Operation

    (only in case of a single-beam sensor). 3. The OPTISONIC 7300 C/…-Ex and OPTISONIC 7000…-Ex shall be included in the local equipo- tential bonding system of the potentially explosive area.

  • Page 9: Approvals

    If you need the approval certificate, please download it from our website. 1.7 OPTISONIC 7300 C/...-Ex The OPTISONIC 7300 C/...-Ex is the compact configuration of the GFC 300 ultrasonic signal converter and the OPTISONIC 7000 ultrasonic gas flow sensor. The gas flow sensor contains flameproof (Ex db) gas transducers (type G7.nn or G11.nn) or partially "Ex db"...

  • Page 10: Optisonic 7000

    Equipment protected by increased safety "e" IEC60079-11:2011/EN60079-11:2012 Equipment protected by increased safety "i" The GFC 300 F/…-Ex ultrasonic signal converter has the following approval numbers: KIWA 17ATEX0002 X - IECEx KIWA 17.0001X - CSAE 22UKEX1288X www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 11: Biogas Versions

    The biogas versions are low-pressure (maximum 10 bar / 145 psi) designs of the gas flowmeters and available as compact flowmeter (OPTISONIC 7300 C/…-Ex) and as remote flow sensor (OPTISONIC 7000…-Ex). The biogas flow sensors have one or two additionally G½" BSPP screw- in connections for the ATEX/IECEx/UKCA-approved ("Ex ia"...

  • Page 12: Technical Data

    G6.nn The process temperature is the temperature of the medium that surrounds the transducers. The ambient temperature is the (air) temperature at the location where the meter is installed. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 13: Marking Labels Atex/Iecex (Examples)

    8 Name and address of the manufacturer. a: CE mark with number of notified body b Manufacturer website, safety instructions, disposal and China RoHs marking c: Auto ID according to DIN SPEC 91406 (data matrix) 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...
  • Page 14 8 Name and address of the manufacturer. a: CE mark with number of notified body b Manufacturer website, safety instructions, disposal and China RoHs marking c: Auto ID according to DIN SPEC 91406 (data matrix) www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...
  • Page 15 INTRODUCTION OPTISONIC 7300 Figure 1-4: Example of the nameplate for the OPTISONIC 7300 C-Ex compact version 1 Ex approval mark, marking code, ATEX /IECEx approval number and ambient temperature range 2 Additional information (intrinsically safe circuits) 3 Explosion safety notes and warning messages...

  • Page 16: Marking Labels Ukca Ex (Examples)

    8 Name and address of the manufacturer. a: UKCA mark with number of notified body b Manufacturer website, safety instructions, disposal and China RoHs marking c: Auto ID according to DIN SPEC 91406 (data matrix) www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...
  • Page 17 8 Name and address of the manufacturer. a: UKCA mark with number of notified body b Manufacturer website, safety instructions, disposal and China RoHs marking c: Auto ID according to DIN SPEC 91406 (data matrix) 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...
  • Page 18 INTRODUCTION OPTISONIC 7300 Figure 1-9: Example of the nameplate for the OPTISONIC 7300 C-Ex compact version 1 Ex approval mark, marking code, UKCA Ex approval number and ambient temperature range 2 Additional information (intrinsically safe circuits) 3 Explosion safety notes and warning messages...
  • Page 19 Scan the auto ID code on the device nameplate to download all product specific information. • Handbooks, Quick Starts and Supplementary instructions • Calibration certificates • Factory settings as bin file • Parameter data sheets • Digital nameplates 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...

  • Page 20: I/O Sticker

    • Fieldbus IO PA on IO board 1. • Intrinsic safety option with current out active • Pulse/Status Out/Control in on IO board 2 Other combinations are possible, for details. refer to General on page 27 www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 21: Temperature Limits

    It therefore has a temperature rating of T6. 2.3 OPTISONIC 7300 C/...-Ex The OPTISONIC 7300 C/...-Ex ultrasonic compact gas flow meter is provided with the same electronics housing as the GFC 300 F/...-Ex and therefore has the same ambient temperature range of -40...+65°C (aluminum housing) and -40...+60°C (stainless steel).
  • Page 22 TEMPERATURE LIMITS OPTISONIC 7300 Temperature classification OPTISONIC 7300 C/...-Ex with aluminum MH300-Ex and gas transducers type G6.nn. Temperature class Maximum process temperature [ºC] at = 65ºC ≤ ≤ ≤ ≤ ≤ 40ºC 45ºC 50ºC 55ºC 60ºC OPTISONIC 7300 C/...Ex (stainless steel housing) The temperature limitations in the table below apply to compact flowmeters with a stainless steel MH 300-Ex housing.

  • Page 23: Optisonic 7000

    The following table shows the temperature classification for gas flow sensors in remote design equipped with gas transducers of type G6.nn. Temperature classification of OPTISONIC 7000…-Ex sensor with G6.nn. Temperature class Maximum process temperature [ºC] at T = 70ºC 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...

  • Page 24: Connection Of Separate Systems

    4 mm (11 AWG). Make sure that the core of the bonding wire is properly mounted under the U-clamp of the PE-terminal and that the screw is tightly fixed. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 25: Connection Of Signal Cable To Signal Converter (Remote Version Only)

    To ensure smooth functioning and safe instrument usage, always use the signal cable(s) included in the delivery. Figure 3-2: Clamp the cables on the shielding bush 1 Cables 2 Cable glands 3 Grounding clamps 4 Cable with metal shielding bush 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...
  • Page 26 CONNECTION OF SEPARATE SYSTEMS OPTISONIC 7300 Figure 3-3: Connect the cables in the connection box of the sensor INFORMATION! Connect the cable on connector with similar numeral marking www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 27: Electrical Connections

    OPTISONIC 7300 4.1 General The OPTISONIC 7300 C/...-Ex compact flowmeter must be incorporated within the equipotential bonding system of the installation. This can be established internally by connection of the protective earth (PE conductor of the mains supply system to the internal PE clamp, or...
  • Page 28 Connections for signal I/Os (PELV circuits), non-“Ex i” or “Ex i”, are B, B- dependent on the specific version of the GFC 300 converter ordered. C, C- Consult the tables with CG36/CG46 numbers for details. D, D- www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...
  • Page 29 • Position 5, 6, 7; standard 0, power supply, type of display • Position 8...10; selection I/O For a selection of the different CG36 or CG46 numbers XYZ refer to "Ex i" I/O connections on page 33 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...

  • Page 30: Cable Glands

    However, the semi-circular insulation cover (covering the non-intrinsically safe mains supply terminals L and N or L+ and L-) MUST be kept closed at all times. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 31: Non-"Ex I" I/O Connections

    The options separated by “or” are hardware versions (must be ordered as such) All outputs are passive unless otherwise indicated HighC means High Current input/output, Namur means that the in-/outputs are according to the NAMUR NE43 standard 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...
  • Page 32 Overview of the possible combinations, defined by characters XYZ of the CG46 number Characters Name of I/O Terminals Terminals Terminals Terminals circuits A, A-, A+ B, B- C, C- D, D- Modular I/O Many combinations possible without modular carriers www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 33: Ex I" I/O Connections

    60079-11 between the non-”Ex i” and “Ex i” circuits, the mains terminals are provided with a semi-circular protection cover with a “snap-in” lock. This cover MUST be closed before establishing the power supply to the converter. 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...
  • Page 34 Used abbreviations for in-/output functions: CO = Current Output, PO = Pulse Output, SO = Status Output, CI = Control Input, n.c. = not connected All in-outputs are passive unless otherwise noted as active with extension (a). www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 35: Maintenance

    For information about the flameproof joints please contact your KROHNE representative. The four M6 bolts to screw the MH300-Ex housing have a strength of 700 MPa.

  • Page 36: Replacement Of Mains Fuse

    250 V / 0.8 A T 5080850000 WARNING! Before reassembling the unit, refer to Before and after opening on page 35 , then: • Reassemble the unit in reverse order. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 37: Exchange Of Electronics Unit

    Only the sensor calibration data are loaded. - if in the screen appears “load no data”, all data have been lost. Contact your local representative. Figure 5-1: Unscrew the cover and remove the display 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...
  • Page 38 CAUTION! Please pay attention that the same amount of force is applied on both pullers, otherwise the connector at the backside can be damaged. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...
  • Page 39 • Screw the electronics unit back to the housing. • Re-install the display and make sure not to kink the display's flat ribbon cable. • Replace cover and tighten by hand. • Connect power. 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...

  • Page 40: Service / Repair Information

    • to check and ensure, if necessary by rinsing or neutralizing, that all cavities are free from such dangerous substances, • to enclose a certificate with the device confirming that is safe to handle and stating the product used. www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...

  • Page 41: Form (For Copying) To Accompany A Returned Device

    WEEE symbol and reaching their end-of-life must not be disposed of with other waste. The user must dispose of the WEEE to a designated collection point for the recycling of WEEE or send them back to our local organisation or authorised representative. 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...

  • Page 42: Notes

    NOTES OPTISONIC 7300 www.krohne.com 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04...
  • Page 43 NOTES OPTISONIC 7300 11/2022 - 4003791404 - AD EX OPTISONIC 7300 R04 www.krohne.com...
  • Page 44 Engineering, commissioning, calibration, maintenance and training services Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.: +49 203 301 0 Fax: +49 203 301 10389 info@krohne.de The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...

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