BM 500 Handbook
4-wire potentiometric level meter for hygienic applications
© KROHNE 12/2013 - 4003176301 - MA BM 500 R02 en
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All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without the prior written authorisation of KROHNE Messtechnik GmbH.
Subject to change without notice.
Copyright 2013 by
KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany)
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CONTENTS |
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BM 500 |
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Safety instructions |
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1.1 |
Intended use ..................................................................................................................... |
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1.2 |
Certifications .................................................................................................................... |
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1.3 |
Safety instructions from the manufacturer ..................................................................... |
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1.3.1 Copyright and data protection ................................................................................................ |
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1.3.2 Disclaimer ............................................................................................................................... |
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1.3.3 Product liability and warranty ................................................................................................ |
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1.3.4 Information concerning the documentation........................................................................... |
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1.3.5 Warnings and symbols used................................................................................................... |
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1.4 |
Safety instructions for the operator................................................................................. |
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2 Device description |
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2.1 |
Scope of delivery............................................................................................................... |
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2.2 |
Device description ............................................................................................................ |
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2.3 |
Nameplate ...................................................................................................................... |
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Installation |
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3.1 |
Installation requirements .............................................................................................. |
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3.2 |
Process connection ........................................................................................................ |
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3.3 |
Mounting of 3A marked products................................................................................... |
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4 Electrical connections |
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4.1 |
Safety instructions.......................................................................................................... |
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4.2 |
Electrical connection diagrams ..................................................................................... |
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5 Operation |
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5.1 |
Start-up........................................................................................................................... |
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5.2 |
4 and 20 mA setting ........................................................................................................ |
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5.3 |
Fault diagnosis and corrective action ............................................................................ |
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6 Service |
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6.1 |
Availability of services .................................................................................................... |
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6.2 |
Spare parts ..................................................................................................................... |
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6.3 |
Returning the device to the manufacturer..................................................................... |
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6.3.1 General information.............................................................................................................. |
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6.3.2 Form (for copying) to accompany a returned device............................................................ |
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6.4 |
Disposal .......................................................................................................................... |
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CONTENTS |
BM 500 |
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Technical data |
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7.1 |
Measuring principle........................................................................................................ |
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7.2 |
Technical data................................................................................................................. |
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7.3 |
Dimensions ..................................................................................................................... |
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Appendix |
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8.1 |
Order code for BM 500 ................................................................................................... |
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8.2 |
Order code for process connections.............................................................................. |
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Notes |
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12/2013 - 4003176301 - MA BM 500 R02 en |
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SAFETY INSTRUCTIONS 1 |
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1.1 Intended use
CAUTION!
Responsibility for the use of the measuring devices with regard to suitability, intended use and corrosion resistance of the used materials against the measured fluid lies solely with the operator.
INFORMATION!
The manufacturer is not liable for any damage resulting from improper use or use for other than the intended purpose.
The potentiometric level meter BM 500 is designed solely for measuring continuously the level of liquids and pasty and sticky products.
The device is particularly suitable for measuring low levels in the range of 50...1000 mm / 2...39.4". Thanks to the principle involved, this potentiometric measuring system is independent of sticky deposits and varying product properties. All it needs is a minimum conductivity of
50µS/cm.
1.2Certifications
CE marking
The device fulfils the statutory requirements of the following EC directives:
• EMC specification acc. to EN 61326-1 (2006)
The manufacturer certifies successful testing of the product by applying the CE marking.
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1 SAFETY INSTRUCTIONS |
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BM 500 |
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1.3 Safety instructions from the manufacturer
1.3.1 Copyright and data protection
The contents of this document have been created with great care. Nevertheless, we provide no guarantee that the contents are correct, complete or up-to-date.
The contents and works in this document are subject to copyright. Contributions from third parties are identified as such. Reproduction, processing, dissemination and any type of use beyond what is permitted under copyright requires written authorisation from the respective author and/or the manufacturer.
The manufacturer tries always to observe the copyrights of others, and to draw on works created in-house or works in the public domain.
The collection of personal data (such as names, street addresses or e-mail addresses) in the manufacturer's documents is always on a voluntary basis whenever possible. Whenever feasible, it is always possible to make use of the offerings and services without providing any personal data.
We draw your attention to the fact that data transmission over the Internet (e.g. when communicating by e-mail) may involve gaps in security. It is not possible to protect such data completely against access by third parties.
We hereby expressly prohibit the use of the contact data published as part of our duty to publish an imprint for the purpose of sending us any advertising or informational materials that we have not expressly requested.
1.3.2 Disclaimer
The manufacturer will not be liable for any damage of any kind by using its product, including, but not limited to direct, indirect or incidental and consequential damages.
This disclaimer does not apply in case the manufacturer has acted on purpose or with gross negligence. In the event any applicable law does not allow such limitations on implied warranties or the exclusion of limitation of certain damages, you may, if such law applies to you, not be subject to some or all of the above disclaimer, exclusions or limitations.
Any product purchased from the manufacturer is warranted in accordance with the relevant product documentation and our Terms and Conditions of Sale.
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.
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SAFETY INSTRUCTIONS 1 |
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BM 500 |
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1.3.3 Product liability and warranty
The operator shall bear responsibility for the suitability of the device for the specific purpose. The manufacturer accepts no liability for the consequences of misuse by the operator. Improper installation and operation of the devices (systems) will cause the warranty to be void. The respective "Standard Terms and Conditions" which form the basis for the sales contract shall also apply.
1.3.4 Information concerning the documentation
To prevent any injury to the user or damage to the device it is essential that you read the information in this document and observe applicable national standards, safety requirements and accident prevention regulations.
If this document is not in your native language and if you have any problems understanding the text, we advise you to contact your local office for assistance. The manufacturer can not accept responsibility for any damage or injury caused by misunderstanding of the information in this document.
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.
12/2013 - 4003176301 - MA BM 500 R02 en |
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1 SAFETY INSTRUCTIONS |
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BM 500 |
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1.3.5 Warnings and symbols used
Safety warnings are indicated by the following symbols.
DANGER!
This information refers to the immediate danger when working with electricity.
DANGER!
This warning refers to the immediate danger of burns caused by heat or hot surfaces.
DANGER!
This warning refers to the immediate danger when using this device in a hazardous atmosphere.
DANGER!
These warnings must be observed without fail. Even partial disregard of this warning can lead to serious health problems and even death. There is also the risk of seriously damaging the device or parts of the operator's plant.
WARNING!
Disregarding this safety warning, even if only in part, poses the risk of serious health problems. There is also the risk of damaging the device or parts of the operator's plant.
CAUTION!
Disregarding these instructions can result in damage to the device or to parts of the operator's plant.
INFORMATION!
These instructions contain important information for the handling of the device.
LEGAL NOTICE!
This note contains information on statutory directives and standards.
• HANDLING
This symbol designates all instructions for actions to be carried out by the operator in the specified sequence.
iRESULT
This symbol refers to all important consequences of the previous actions.
1.4Safety instructions for the operator
WARNING!
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.
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12/2013 - 4003176301 - MA BM 500 R02 en |
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DEVICE DESCRIPTION 2 |
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BM 500 |
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2.1 Scope of delivery
INFORMATION!
Inspect the cartons carefully for damages or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate.
The following items are supplied with the device:
•Measuring device
•Hygienic adapter (optional)
•Product documentation
2.2Device description
The BM 500 level meter utilises the potentiometric measuring principle and can be used in all medias that have a minimum conductivity of 50 μS/cm.
From the low resistive measuring rod a high frequent current is fed through the media to the tank wall. The voltage between the tip of the rod and the tank wall is measured. This output voltage is proportional to the level in the tank.
The measurement is unaffected by temperature and adhesive media.
The device is ideal for measurements in small vessels with tough, pasty or strong adhesive media, such as ketchup, honey, and toothpaste. The integrated electronics provide a 4...20 mA output.
The device has automatic recognition of top/buttom mounting position. Even angled installation is possible.
In non-conductive tanks, e.g. plastic, a reference rod must be installed (order a standard LS 7200 without electronics).
The BM 500 is available as compact and remote version. The remote version is recommended for applications where the ambient temperature at the measuring point exceeds +60°C / +140°F. Due to the high process temperature limit, the device is well suitable for CIP and SIP processes.
The hygienic installation is guaranteed by using one of the hygienic weld-in sleeves. For further information refer to the specific data sheet "Hyg. accessories".
12/2013 - 4003176301 - MA BM 500 R02 en |
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