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

Ultrasonic gas flowmeter addendum for hazardous areas
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OPTISONIC 7300
OPTISONIC 7300
OPTISONIC 7300
OPTISONIC 7300
Ultrasonic gas flowmeter
Addendum for hazardous areas.
These additional instructions are an extension to the OPTISONIC 7300 Quick Start and
Handbook.
© KROHNE 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02
Supplementary Instructions
Supplementary Instructions
Supplementary Instructions
Supplementary Instructions

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  • Page 1 Supplementary Instructions Supplementary Instructions Supplementary Instructions Supplementary Instructions Ultrasonic gas flowmeter Addendum for hazardous areas. These additional instructions are an extension to the OPTISONIC 7300 Quick Start and Handbook. © KROHNE 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 2: Table Of Contents

    2.4 OPTISONIC 7000...-Ex..................... 18 3 Connection of separate systems 3.1 General ........................... 19 3.2 Cable marking ........................ 19 3.3 Equipotential bonding..................... 19 3.3.1 Flow sensor........................... 19 3.3.2 Signal converter ........................19 www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...
  • Page 3 5.4 Exchange of electronics unit ..................29 5.5 Service / repair information ................... 31 5.6 Form (for copying) to accompany a returned device ............. 32 5.7 Disposal .......................... 32 6 Notes 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 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 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • 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. 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 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 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 7: Safety Instructions For The Operator

    These additional instructions are an extension to the standard documentation and only apply to the Ex versions of the OPTISONIC 7300 C/..., OPTISONIC 7000... and GFC 300 F ultrasonic flowmeters. All technical information as described in the standard documentation is applicable, when not specifically excluded, completed or replaced by the instructions in these additional instructions.

  • Page 8: Special Conditions For Safe Use

    (only in case of a sin- gle-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

    (warning sign!). For the OPTISONIC 7300 C/...-Ex compact gasflowmeter the waiting time is 35 minutes for temperature class T6 and 10 minutes for temperature class T5. No waiting time(s) have to be considered for temperature classes T4 ...T1...

  • Page 10: Optisonic 7300 C

    OPTISONIC 7300 1.6 OPTISONIC 7300 C/...-Ex The OPTISONIC 7300 C/...-Ex is the compact configuration of the GFC 300 ultrasonic flow 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" with an encapsulated front "Ex ma"...

  • Page 11: Gfc 300 F

    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 additionally one or two screw-in connections for ATEX/IECEx-approved ("Ex ia"...

  • Page 12: Technical Data

    C applies to the flow sensor equiped with gas transducers of type 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 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 13: Marking Labels (Examples)

    1.12 Marking labels (examples) See the following examples of marking labels (i.e. data stickers) of respectively OPTISONIC 7300 C-Ex, OPTISONIC 7300 C/i-Ex ultrasonic compact flowmeter, GFC 300 F/...-Ex ultrasonic signal converter in field design and OPTISONIC 7000...-Ex ultrasonic flow sensor.

  • Page 14: Nameplate Sensor Optisonic 7000

    2. Protection class and Explosion safety notes 3. Tag number 4. PED data 5. Size and calibration data 6. Type designation of the flowmeter and manufacturing date 7. Name and address of the manufacturer www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 15: 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. See chapter 4 "Electrical connections", for details. 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...

  • Page 16: 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 17 TEMPERATURE LIMITS OPTISONIC 7300 Temperature classification OPTISONIC 7300 C/…-Ex with aluminum MH 300-Ex and gas transducers type G7.nn or G11.nn. Temperature class Maximum process temperature [ºC] at 40ºC 45ºC 50ºC 55ºC 60ºC = 65ºC Temperature classification OPTISONIC 7300 C/...-Ex with aluminum MH300-Ex and gas transducers type G6.nn.

  • Page 18: 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 www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 19: Connection Of Separate Systems

    The transducer circuits of the signal converter are galvanically isolated from earth, therefore an equipotential bonding conductor between the flow sensor and the signal converter does not have to be connected, but can be used if desired (e.g. for EMC reasons). 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...

  • Page 20: 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 21 • Position 5, 6, 7; standard 0, power supply, type of display • Position 8...10; selection I/O "Ex i" I/O connections For a selection of the different CG36 numbers XYZ refer refer to on page 25 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...

  • Page 22: Cable Glands

    However, the semi-circular insulation cover (covering the non-intrinsically safe mains supply terminals L and N or L+ and L-) MUST MUST MUST be kept closed at all times. MUST www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 23: 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 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...
  • Page 24 CI = Control Input, PA = Profibus PA, FF = Foundation Fieldbus, DP = Profibus DP, RS485 = RS 485 Modbus, n.c. = not connected. All in-/outputs are passive unless otherwise noted as active with extension (a). www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 25: 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. 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...
  • Page 26 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 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 27: 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 700N/mm 5.2 Before and after opening...

  • Page 28: Replacement Of Mains Fuse

    250 V / 0,8 A T 5080850000 WARNING! Before reassembling the unit, refer to Before and after opening on page 27 , then: • Reassemble the unit in reverse order. www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 29: Exchange Of Electronics Unit

    All work on the electrical connections may only be carried out with the power disconnected. Take note of the voltage data on the nameplate! Figure 5-1: Unscrew the cover and remove the display 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...
  • Page 30 • 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. www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 31: Service / Repair Information

    • such dangerous substances, to enclose a certificate with the device confirming that is safe to handle and stating the • product used. 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...

  • Page 32: Form (For Copying) To Accompany A Returned Device

    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. www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...

  • Page 33: Notes

    NOTES OPTISONIC 7300 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...
  • Page 34 NOTES OPTISONIC 7300 www.krohne.com 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02...
  • Page 35 NOTES OPTISONIC 7300 08/2018 - 4003791402 - AD EX OPTISONIC 7300 R02 www.krohne.com...
  • Page 36 • Process Analysis • 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.com The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...

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