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KM26 |
MAGNETIC LEVEL GAUGE | OI/KM26-EN REV I
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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 ___________________...
Page 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...
Page 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...
Page 33: ...33 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I...
Page 34: ...34 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I...
Page 35: ...35 KM26 MAGNETIC LEVEL GAUGE OI KM26 EN REV I...
Page 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...
