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KM26 | 

MAGNETIC LEVEL GAUGE  |  OI/KM26-EN REV I

General safety information

The following safety section provides an overview of the 
safety aspects that must be observed for operation of the 
device.

The device is constructed in accordance with international 
and local regulations and is deemed to be operationally safe. 
Additionally, the device is tested and shipped from the 
factory in working condition. The information contained 
within this manual, as well as all applicable documentation 
and certification, must be observed and adhered to in order 
to maintain the factory-deployed condition throughout the 
operations of the KM26 series system/solution.

Full compliance with the general safety requirements must be 
observed during operation of the device. In addition to 
providing general information, the individual sections within 
this manual contain descriptions, processes and / or 
procedural instructions with specific safety information for 
that corresponding action.

Only by observing all of the safety information the user can 
minimize the risk of hazards to personnel and / or the 
environment. The provided instructions are intended as an 
overview only and do not contain detailed information on all 
available models or every conceivable scenario that may arise 
during setup, operation and / or maintenance work. 

For additional information, or in the event of specific issues 
not covered within these operating instructions, please 
contact the manufacturer. ABB declares the contents of this 
manual are not part of any prior or existing agreements, 
commitments or legal relationships and are not intended to 
amend those that are already in place.  

2     Safety

The device can be operated at high levels of pressure and 
with aggressive media. As a result, serious injury or 
significant property damage may occur if this device is 
operated incorrectly.

WARNING

Only qualified and authorized personnel are to be tasked 
with the installation, electrical connection, commissioning 
and maintenance of the KM26 series MLG. Qualified 
personnel are those individuals who have experience in 
the installation, electrical connection, commissioning and 
operation of the KM26 series MLG or similar devices /
systems and hold the necessary qualifications. These 
qualifications include but are not limited to:

•  training or instruction – authorization to operate and 

maintain devices or systems according to safety 
engineering standards for electrical circuits, high 
pressures and aggressive media

•  training or instruction in accordance with safety 

engineering standards regarding maintenance and 
use of adequate safety systems.

For reasons of safety, ABB recommends that only 
sufficiently insulated tools, conforming to IEC EN 60900, 
be used. Since the MLG may form a link within a safety 
chain, it is recommended that the device be replaced 
immediately if defects are detected. In the event of use in 
a hazardous area, only non-sparking tools are to be used.

CAUTION

In addition, the user must observe all relevant safety 
regulations regarding the installation and operation of 
electromechanical systems and the relevant standards, 
regulations and guidelines concerning explosion protection.

Improper use  

The KM26 series MLGs are designed for reliable and accurate 
measurement of liquid levels in the industrial applications. 
Use the KM26 series MLG for this purpose only. The 
manufacturer accepts no liability for any form of damage 
resulting from improper use! 
It is prohibited to use the device for the following but not 
limited to these purposes:

•  as a climbing aid (for example, for mounting purposes) 

port for pipes.

•  removing material (for example, by drilling any part of the 

MLG

 

Technical limit values

The device is designed for use exclusively within the values 
stated on the identification plates (Refer to section 4.1 
identification) and within the technical limit values specified 
on the data sheets.
The following technical limit values must be observed:

•  the maximum working pressure must not be exceeded.
•  the maximum ambient operating temperature must not 

be exceeded.

Содержание KM26

Страница 1: ...free solution for total and or interface level detection in toxic corrosive high pressure and high temperature processes ABB offers the standard KM26 magnetic level gauge with a chamber of virtually...

Страница 2: ...ts 1 Introduction 2 2 Safety 4 3 Mounting 9 4 Troubleshooting 21 5 Service and maintenance 21 6 MLG parts 28 7 MLG parts ordering 30 8 Customer specific product information 30 9 Certificate EU declara...

Страница 3: ...n the float chamber is a float which is designed to float with approximately 70 to 80 of its mass submerged in the process fluid The float magnet assembly is located such that the magnetic actuation p...

Страница 4: ...installation electrical connection commissioning and maintenance of the KM26 series MLG Qualified personnel are those individuals who have experience in the installation electrical connection commissi...

Страница 5: ...l packaging or other suitably secure shipping method The sender should contact the factory for return authorization number and fill out return form provided at the end of the manual and include it wit...

Страница 6: ...the equipment include but are not limited to limited mechanical agitation shall be used use of stilling wells to mitigate effect of agitation limit rate of change of level to values such that frictio...

Страница 7: ...ttom or lower chamber branch connection locations For the KM26S it is also acceptable to connect a wire ring terminal to a flange stud locked in with another nut The grounding connection must be metal...

Страница 8: ...erature classifications of the ATEX approved KM26 is limited to process temperatures up to 50C below the maximum surface temperature allowed for each of the temperature classes as per the below table...

Страница 9: ...hin 24 hours Do not discard the shipping container until all parts components are verified and checked 3 Mounting General Read the following installation instructions carefully before proceeding Failu...

Страница 10: ...e flange at the bottom and a cap at the top A float assembly hangs below the chamber into the liquid via a guide rod The float assembly consists of a magnet at the top of a guide rod and a float at th...

Страница 11: ...racted to the float not repelled when inserted correctly The KM26T float is wrapped separately in bubble wrap The magnet assembly at the end of the float rod is inserted into the top of the guide cham...

Страница 12: ...delivered correctly set up for measuring the product specified in the order The optional magnetic bar graph indicator is available in yellow black or red white for use in locations where temperature i...

Страница 13: ...ition on the chamber figure 14 Limit switches To signal specific liquid levels the KM26 can be equipped with several different types of ABB limit switches Magnetically actuated limit switches are the...

Страница 14: ...lements overvoltage protection devices lightning protection and or voltage separation capacity must be provided at the plant Check that the existing operating voltage corresponds to the voltage indica...

Страница 15: ...tions gussets support brackets etc may interfere with installation at desired locations Cam actuated switches must be mounted in the correct orientation Magnetic level gague switches Model Approvals E...

Страница 16: ...ring length of the gauge align the zero mark with the zero of the scale if the transmitter measuring length matches the center to center of the gauge align the zero mark with the center of the bottom...

Страница 17: ...tter reads higher than zero raise the transmitter If the transmitter reads lower than zero lower the transmitter 16 Attach proper field wiring to the transmitter according to the instruction manual in...

Страница 18: ...sary to retain the tube in the channel 3 Cryogenic indicator tubes are sealed into the scale assembly and should be replaced as a unit These scale assemblies are strapped in place using gear clamps Ve...

Страница 19: ...the scale is located opposite to the process connections and the insulation will be thinned down to in on that side If the scale has been moved from the position that it is shipped in then the thinne...

Страница 20: ...to identify the true liquid level because of the very abnormal performance Similarly if a large number of small bubbles form underneath and around the float it will decrease the buoyant force that is...

Страница 21: ...f the tank vessel 4 Troubleshooting Indicator decoupling Causes float is upside down Remove check field strength of magnets and install correctly Proximity to opposing field may weaken magnetic field...

Страница 22: ...gh the chamber top end 2 After cleaning the MLG chamber replace the float and drain flange A new flange gasket may be required 3 Note Use gaskets compatible with process fluid 4 Verify that the stainl...

Страница 23: ...Align top tube holder with scale channel and slide down until top surface of the holder is flush with top of scale channel The screw hole should align with the hole in the holder 7 Use a 6 32 machine...

Страница 24: ...24 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I 5 Service and maintenance Figure 27 KM26 shuttle replacement glass installation procedure KM26 shuttle replacement glass installation procedure...

Страница 25: ...older cavity 4 Carefully align replacement glass with shuttle indicator into scale channel and lower into bottom tube holder Ensure glass tube rest flat on rubber bumper and is firmly seated Nipple on...

Страница 26: ...26 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I 5 Service and maintenance KM26 bargraph replacement glass installation procedure Figure 29 KM26 bargraph replacement glass installation procedure...

Страница 27: ...into bottom tube holder Flat faces on glass tube should register with corresponding flat faces in cavity of bottom tube holder Ensure glass tube rest flat on rubber bumper and it firmly seated Nipple...

Страница 28: ...cale assembly includes 1 ABC Ser 1 1A Tube with follower Ser 1A 1B Tube holder Ser 1B 1C Scale Ser 1C 2 KM26S chamber Ser 2KS 3 Vent plug Ser 3KS 4 Gasket Ser 4KS 5 Float chamber closure Ser 5KS Flang...

Страница 29: ...ption Part 1 Scale assembly includes 1 ABC Ser 1 1A Tube with follower Ser 1A 1B Tube holder Ser 1B 1C Scale Ser 1C 2 KM26T chamber Ser 2KT 3 Float stop tube Ser 3KT 4 Float stop plate Ser 4KT 5 Snap...

Страница 30: ...irmed by applications engineering 7 MLG parts ordering 8 Customer specific product information Use this area to record pertinent information about your purchased unit Serial number ___________________...

Страница 31: ...defective the original purchaser shall notify ABB Inc K TEK products and request a returned material authorization before returning the material to ABB Inc K TEK products with transportation prepaid...

Страница 32: ...ata Sheets MSDS and decontamination tags by affixing these documents in close proximity to the shipment label for identification purposes January 18 2006 Return Authorization Form Customer Date Contac...

Страница 33: ...33 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I...

Страница 34: ...34 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I...

Страница 35: ...35 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I...

Страница 36: ...and illustrations contained therein Any reproduction disclosure to third parties or utilization of its contents in whole or in parts is forbidden without prior written consent of ABB 2020 ABB ABB Inc...

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