KROHNE BW 25 Handbook
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KROHNE BW 25 Handbook

Level meter
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Summary of Contents for KROHNE BW 25

  • Page 1 BW25 BW25 BW25 BW25 Handbook Handbook Handbook Handbook Level meter...

  • Page 2: Table Of Contents

    Functional description of the keys ................31 6.3.2 Navigation within the menu structure ..............31 6.3.3 Changing the settings in the menu ................. 32 6.3.4 Measures in the event of faulty indications ............32 www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 3 Form (for copying) to accompany a returned instrument ........45 Technical data ................46 9.1 Operating principle .................... 46 9.2 Technical data ....................47 9.3 Dimensions ......................52 KROHNE measuring technology - Product overview....56 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 4: Safety Instructions

    SAFETY INSTRUCTIONS BW25 1.1 Intended use The BW25 level meter from KROHNE Messtechnik GmbH & Co. KG is suitable for the measurement of liquids and interfaces in liquids. The devices are particularly suitable for the measurement of: • Liquids •...

  • Page 5: Safety Instructions From The Manufacturer

    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. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 6: 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 underneath icons. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 7: Display Conventions

    In general, devices from the manufacturer may only be installed, commissioned, operated and maintained by properly trained and authorized personnel. This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 8: Device Description

    Please check the contents of the consignment for completeness and intactness. Device in ordered version For indicator M10 - bar magnet For indicator M10 - key Manual Certificates, calibration report (supplied to order only) www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 9: Device Version

    2-wire current output 4...20 mA, HART communication BW25/M10 • Pressure-resistant enclosure Ex d • 2 digital adjustable limit switches, 2-wire open collector or type NAMUR • 2-wire current output 4...20 mA, HART communication 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 10: Nameplate

    Additional markings on the indicator • SN - serial no. • SO - sales order / item • PA - KROHNE order • Vx - product configurator code • AC - article code www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 11: Description Code

    Electrical signal output • ESK - Electronic transmitter Limit switch • K1 - One limit switch • K2 - Two limit switches * positions which are not needed are omitted (no blank positions) 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 12: Installation

    Align the gaskets. Tighten the nuts with the tightening torques of the appropriate pressure • rating. Do not lay signal cables directly next to cables for the power supply. • www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 13: Installation

    If the displacer rod is connected to the spring system under atmospheric conditions, then a different height may cause the pointer to show something different. Do not change the factory setting of the pointer. This particularly applies at high pressures • and high temperatures. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 14: Protection Category

    The cables must be laid with a loop upstream of the flowmeter to prevent water from getting into the housing. • The cable glands must be tightened. • Close the unused cable glands using blanking plugs 1. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 15: Grounding

    Grounding on the flange Grounding indicator M9 Grounding indicator M10 DANGER! The grounding wire may not transfer any interference voltage. Do not use this grounding wire to ground any other items of electrical equipment. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 16: Electrical Connection Indicator M9

    Please check on the device nameplates, that the device is supplied according to your order. Check for the correct mains voltage printed on the nameplate. If not, contact your local representative for advice. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 17: Limit Switch

    The built-in contact types are shown on the indicator. Electrical connection of the limit switches Electrical connection of the limit switches Electrical connection of the limit switches Electrical connection of the limit switches Contact Terminal no. 2-wire connection 3-wire connection 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 18 Slide the scale back to the latching point • Set contact pointers to the desired switching point After setting has been carried out: Fix the contact pointers with the locking screw 3. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 19 MIN 1 contact or MAX 2 contact Contact Type Current ≤ 1 mA MIN 1 SJ3,5-S1N ≤ 1 mA MIN 2 SC3.5-NO ≥ 3 mA MAX 1 SJ3,5-S1N ≥ 3 mA MAX 2 SC3,5-NO 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 20: Electrical Signal Output Esk

    (PELV) is recommended. ESK2A connection with electrical isolation Figure 4-6: Terminal connection Converter supply isolator with electrical isolation Power supply (see supply isolator information) Measurement signal 4...20mA External load, HART communication www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 21 22 mA + 12 V where = the minimum supply voltage and = the total measuring loop resistance INFORMATION! The power supply has to be able to supply a minimum of 22 mA. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 22 Configuration The ESK can be configured via HART communication. DD (Device Descriptions) for AMS 6.x and PDM 5.2 and a DTM (Device Type Manager) are available for configuration (download centre at www.krohne.com www.krohne.com). www.krohne.com www.krohne.com The current level can be transmitted using the integral HART communications.

  • Page 23: Electrical Connection Indicator M10

    Please check on the device nameplates, that the device is supplied according to your order. Check for the correct mains voltage printed on the nameplate. If not, contact your local representative for advice. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 24: M10 Electrical Connection And Functions

    5.3 M10 Power supply - analog output The electrical connection is polarized. Indicator M10 - terminal connection I Figure 5-1: Terminal connection Power supply 16...32VDC Measurement signal 4...20 mA External load, HART communication www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 25 (not including the flowmeter). The required supply voltage can be calculated using the formula below: 22 mA + 16 V where = the minimum supply voltage and = the total measuring loop resistance 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 26 The M10 electronic indicator can be parametrized via HART communications. DD (Device Descriptions) for AMS 6.x and PDM 5.2 and a DTM (Device Type Manager) are available for parametrization (download center at www.krohne.com). The current level can be transmitted using the integral HART communications. Two limit values can be monitored.

  • Page 27: M10 Switching Outputs B1 And B2

    Switching values NO contact NC contact NAMUR NAMUR I [mA] Switching value < 1 < 1 > 3 max 100 reached Switching value > 3 max. 100 < 1 < 1 not reached 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 28 Max. switching current Y1 [mA] Minimum load impedance Y2 [ohm] Power supply Indicator M10 - power loss of B1 and B2 Figure 5-5: Load impedance 100 Ohm Load impedance 1000 Ohm Power loss Power supply www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 29: Operation Of Indicator M10

    Operation INFORMATION! The device is low-maintenance Comply with the application limits with regard to temperature of the medium and ambient temperature. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 30: Operating Elements

    The mechanical keys and keys for the bar magnet are identical in their function. In this documentation the keys are represented as symbols to describe the operating functions: M10 operation keys Symbol → right ↑ Enter www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 31: Basic Principles Of Operation

    Measuring Main menu Sub-menu Function Edit ↑ ↑ ↑ → ↑ ^ ^ ^ ^ operation ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 32: Changing The Settings In The Menu

    6.3.4 Measures in the event of faulty indications If the indications on the display or the responses to keypad commands are faulty, you have to do a hardware reset. Switch the power supply OFF and ON again. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 33: Overview Of The Most Important Functions And Indicators

    The value set is represented by a 20 mA current at the analog output.. If the current value exceeds the preset value, an alarm is indicated. M10 level units The following units are supported: m - cm - mm - inch - feet 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 34: Error Messages

    Check linearization or carry it out again (HART™ TABLE BAD existent data in communication and linearization software are required; the original calibration values must be linearisation known), or send the device back to KROHNE for a table = check of the linearization. measuring error LINEARIZATIO...
  • Page 35 MEMORY Internal Error Restart the device; if the error occurs again the device CORRUPTION memory error, must be sent back to KROHNE with an indication of the caused by a error. hardware or software problem 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 36 3.12), and is no longer coupled with the measured value. Device drivers for HART™ tools, process control equipment (e.g. Siemens PDM or AMS) PACTware™ and HART™ DTMs are available at the KROHNE Download Center. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 37: Menu Indicator M10

    The device has been set at the factory in accordance with the customer order. Therefore subsequent configuration via the menu is only necessary if the intended use of the device is changed. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 38: Menu Structure

    Switching value B2 1.2.2 Hysteresis B2 Display Time constant Reset 1.5.1 Inactive 1.5.2 Reset error Test & Info 4...20 mA output Output B1 Output B2 Inactive Serial no. Software version Tag No. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 39 4mA Calibration 3.11 20mA Calibration 3.12 Alarm current 3.13 Upper range value and unit 3.13.1 Level 3.13.2 Inactive 3.14 Inactive 3.14.1 Inactive 3.14.2 Inactive 3.14.3 Inactive 3.15 Input code 3.16 Basic setting 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 40: Menu Explanations

    It thus allows attenuated depiction when the display is not calm. If the current level is polled via HART communication, then the transferred measured value is dependent on the time constant. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 41 Output B1 is normally open. If an alarm situation occurs, the contact closes. FUNCTION B2 INACTIVE See FUNCTION B1 SWITCHING See FUNCTION B1 POINT CONTACT B2 NC CONTACT See CONTACT B1 NO CONTACT See CONTACT B1 Inactive Inactive Inactive 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 42 This menu item can be used to select the calibrated basic SETTING setting. This can be helpful if operating data have been changed a number of times. This menu item cannot be used to reset the calibration. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 43: Service

    The manufacturer offers a range of services to support the customer after expiration of the warranty. These include repair, technical support and training. NOTE! For more precise information, please contact your local representative. 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 44: Returning The Device To The Manufacturer

    • such dangerous substances, to enclose a certificate with the device confirming that is safe to handle and stating the • product used. www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 45: Form (For Copying) To Accompany A Returned Instrument

    We have flushed out and neutralized all cavities in the device. We hereby confirm that there is no risk to persons or the environment through any residual media contained in the device when it is returned. Date: Signature: Stamp: 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 46: Technical Data

    The atmospheric pressure and temperature must be known. Due to the length of the spring suspension pin 3, the unmeasureable area is L = 340 mm. Measuring spring Measuring range L ≥ 340mm Displacer rod www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...

  • Page 47: Technical Data

    Cat. II 1/2G, EEx d IIC T6 ATEX, indicator M9 without electrical installations for Zone 0 tanks Cat. II 1/2 Gc for Zone 1.21 Cat. II 2 GD for Zone 2.22 Cat. II 3 GD 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 48 Indicator M9 with electrical installations Product or flange temperature -20…+295°C Product or flange temperature, HT version -40…+400°C Ambient temperature -40…+60°C Storage temperature -40…+60°C Indicator M10 Product or flange temperature -40…+200°C Ambient temperature -40…+60°C Storage temperature -40…+60°C www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 49 < 0.1% Temperature influence < 5 uA / K Max. external resistance / load 800 Ohm (30 VDC) Min. load for HART TM 250 Ohm Software firmware version 02.14 Ident No: 3210680500 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 50 TECHNICAL DATA BW25 M9 ESK2A HART ESK2A HART TM configuration Manufacturer name (code) KROHNE Messtechnik (69 = 45h) Model name ESK2A (226 = E2h) HART TM protocol revision Device revision Physical layer Device category Transmitter non dc isolated device M9 ESK2A process variable...
  • Page 51 NAMUR switching output Power supply Signal current > 3 mA switching value not < 1 mA switching value reached reached; Switching output, Open Collector Power supply 8...30 VDC Pmax 500 mW Imax 100 mA 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 52: Dimensions

    TECHNICAL DATA BW25 9.3 Dimensions Dimensions with M9 indicator Dimensions with M9 indicator (I) ≥ 20 Dimensions [mm] min. 340 Length of the displacer rod (measuring area) According to the operating conditions www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 53 TECHNICAL DATA BW25 Dimensions with M9 indicator (II) Dimensions with M9 indicator (II) Dimensions [mm] Dimensions with M10 indicator Dimensions with M10 indicator Dimensions [mm] 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...
  • Page 54 TECHNICAL DATA BW25 Dimensions of bypass chamber Dimensions of bypass chamber Dimensions [mm] Connection according to DIN EN 1092-1 or ASME B16.5 Length of the displacer rod (measuring area) www.krohne.com 10/2008 • 4000432301 MA BW25 R01 en...
  • Page 55 TECHNICAL DATA BW25 10/2008 • 4000432301 MA BW25 R01 en www.krohne.com...

  • Page 56: Krohne Measuring Technology - Product Overview

    BW25 nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn KROHNE measuring technology - Product overview • • Electromagnetic flowmeters Level measuring instruments • • Variable area flowmeters Temperature measuring instruments • • Mass flowmeters Pressure measuring instruments • • Ultrasonic flowmeters Analysis • • Vortex flowmeters Oil and gas industry •...

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