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KROHNE MS15 Series User Manual

KROHNE MS15 Series
28 pages
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Limit switches for
the BM26A series bypass level indicator
Supplementary Instructions for ATEX applications
Supplementary Instructions for ATEX applicationsSupplementary Instructions for ATEX applications
Supplementary Instructions for ATEX applications
MS15 - MS40 SERIES
MS15 - MS40 SERIESMS15 - MS40 SERIES
MS15 - MS40 SERIES
Supplementary Instructions
Supplementary InstructionsSupplementary Instructions
Supplementary Instructions
© KROHNE 06/2020 - 4007717401 - AD ATEX MS15-MS40 R01 en
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KROHNE MS15 Series Specifications

General IconGeneral
BrandKROHNE
ModelMS15 Series
CategorySwitch
LanguageEnglish

Summary

1 GENERAL SAFETY INFORMATION

1.1 Scope of the document

Defines the applicability of these supplementary instructions to explosion-protection versions.

1.2 Device description

Describes the limit switch and its function with the BM26A series bypass level indicator.

1.3 Standards and approvals

Lists compliance with ATEX directives and relevant European standards for safety.

1.4 Device categories

Details Ex ia and Ex db approved device categories and their suitability for explosive atmospheres.

1.4.1 Ex ia-approved devices

Explains Ex ia approval markings and suitability for use in explosive atmospheres.

1.4.2 Ex db-approved devices

Explains Ex db approval markings and suitability for use in explosive atmospheres.

1.5 ATEX nameplate

Explains the symbols and information found on the ATEX nameplate for identification.

2 INSTALLATION

2.1 Precautions

Outlines essential warnings and conditions for safe installation in hazardous areas.

2.1.1 General notes

Provides general warnings and conditions for installation, referencing EU-Type Examination certificates.

2.1.2 Special conditions

Details specific conditions, especially regarding aluminum housing and device placement.

2.1.3 Electrostatic discharge

Warns about electrostatic discharge risks and locations to avoid for installation.

2.2 Operating conditions

Discusses general conditions for explosive atmospheres and temperature/pressure limits.

2.2.1 General notes

Defines explosive atmosphere and warns about deviations from specified conditions.

2.2.2 Ambient and service temperatures

Lists ambient and service temperature ranges for MS15 and MS40 series limit switches.

2.2.3 Process temperature

Explains the relationship between temperature class and process/ambient temperatures.

2.2.4 MS15 series limit switch

Provides maximum limits for MS15 measuring chamber with EPL Ga/Gb.

MS15 series limit switch (Stainless steel housing)

Details maximum limits for MS15 with stainless steel housing.

Minimum limits (Ex ia version)

Shows minimum process and ambient temperatures for MS15 Ex ia.

Minimum limits (Ex db version)

Shows minimum process and ambient temperatures for MS15 Ex db.

2.2.5 MS40 series limit switch

Provides maximum limits for MS40 measuring chamber with EPL Ga/Gb.

Minimum limits (MS40 series)

Shows minimum process and ambient temperatures for MS40.

3 ELECTRICAL CONNECTIONS

3.1 General notes

Provides crucial safety warnings for working with limit switches and cable glands.

3.2 Terminal compartment for MS15

Details how to open the terminal compartment for the MS15 series.

3.2.1 How to open the terminal compartment

Step-by-step instructions for opening the MS15 series terminal compartment.

3.2.2 How to close the terminal compartment

Step-by-step instructions for closing the MS15 series terminal compartment.

3.3 Terminal compartment for MS40

Details how to open the terminal compartment for the MS40 series.

3.3.1 How to open the terminal compartment

Step-by-step instructions for opening the MS40 series terminal compartment.

3.3.2 How to close the terminal compartment

Step-by-step instructions for closing the MS40 series terminal compartment.

3.4 Terminal tightening capacity

Lists terminal tightening capacity for MS15 and MS40 series wires.

3.5 Equipotential bonding system

Explains connecting the device to the equipotential bonding system.

3.5.1 MS15 series

Describes methods for equipotential bonding for the MS15 series.

3.5.2 MS40 series

Describes methods for equipotential bonding for the MS40 series.

3.6 Ex i version of limit switches

Provides instructions and limits for Ex i (intrinsically safe) versions.

3.6.1 How to connect electrical cables

Details cable connection guidelines for Ex i version.

3.6.2 Maximum intrinsically-safe values for the electrical circuit

Lists maximum intrinsically-safe values for voltage, current, and power.

3.7 Ex d version of limit switches (MS15 series only)

Provides instructions and limits for Ex d (flameproof) versions.

3.7.1 How to connect the electrical cables

Details cable connection guidelines for Ex d version.

3.8 Electrical data (functional values)

Lists functional electrical data for different versions of the limit switches.

4 START-UP

Start-up checks

Lists essential checks before supplying electrical power to the device.

5 SERVICE

5.1 Periodic maintenance

States that no maintenance is necessary under normal operational conditions.

5.2 Keep the device clean

Provides instructions on how to clean the device safely.

5.3 How to remove the device

General notes on removing the device in a hazardous location.

5.3.1 General notes

Safety notes and references for removing Ex i and Ex d devices.

5.3.2 Replacement of the old version of the MS15

Instructions for replacing an older MS15 series limit switch.

5.3.3 Replacement of the old version of the MS40

Instructions for replacing an older MS40 series limit switch.

5.3.4 Replacement of the new version of the MS15 or MS40 series limit switch

Instructions for replacing a newer MS15 or MS40 series limit switch.

5.4 Manufacturer

Provides the manufacturer's contact details and address.

5.5 Returning the device to the manufacturer

General information and warnings about returning the device for inspection or repair.

5.5.1 General information

Precautions and requirements for returning devices for service.

5.5.2 Form (for copying) to accompany a returned device

Provides a form to confirm the safe condition of a returned device.

6 NOTES

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