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Summary of Contents for Emerson Magtech MLT-350 Series
- Page 1 February 2025 Reference Manual L231040, Rev AH Magtech MLT-350 Series Magnetostrictive Level Transmitter for Liquid Level Measurement Instruction and Operations Manual...
- Page 2 High voltage that may be present on leads could cause electrical shock. • Make sure the main power to the Magtech MLT-350 series transmitter is off and the lines to any other external power source are disconnected or not powered while wiring the instrument.
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Page 3: Table Of Contents
February 2025 Reference Manual L231040, Rev AH TABLE OF CONTENTS Table of Contents ................................3 Transmitter Overview ..............................5 General Description ..............................5 Level Transmitter ................................. 5 MLI Mounted Transmitter ............................5 Direct Insertion Transmitter ............................5 Instrument Description ..............................6 Transmitter Detail Description ........................... - Page 4 February 2025 Reference Manual L231040, Rev AH MLT-350 Safety Ratings .............................22 MLT-350 Proof Test ..............................22 Safety Inspection ................................22 Identification ................................23 Warranty ..................................23 Warranty ..................................23 China RoHS ..................................24 MLT-350 Model Disclosure ............................24...
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Page 5: Transmitter Overview
February 2025 Reference Manual L231040, Rev AH changes, the float tracks the change and continuously TRANSMITTER OVERVIEW activates the sensor in the tube. The electronics in the housing process the changing signal and update an ENERAL ESCRIPTION analog 4-20 mA output and digital HART signal. This The MLT-350 is an electronic field instrument, suitable for analog output is precisely proportional to the liquid level in the tank. -
Page 6: Instrument Description
February 2025 Reference Manual L231040, Rev AH NOTE: When a stilling HEORY OF PERATION well is used, care The MLT-350 Level Transmitter is based on the principle should of magnetostriction first used for digital delay lines and exercised when later for precision distance or displacement in the installing machine tool industry. - Page 7 February 2025 Reference Manual L231040, Rev AH written to an output D/A Converter and subsequently filtered so that only high integrity data is converted to a 4-20 mA signal proportional to the item accepted. The conditioned signal is converted to measured.
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Page 8: Installation And Wiring
February 2025 Reference Manual L231040, Rev AH INSTALLATION AND WIRING IRECT NSERTION RANSMITTER NSTALLATION The MLT-350 stand-alone transmitter comes equipped MLI M OUNT RANSMITTER NSTALLATION with a 3/4” compression fitting, mounted approximately 3.00” to 6.00” below the electronics housing. The fitting WARNING is placed in this area to ensure the transmitter is If the instrument is used as an explosion proof (exp) - Page 9 February 2025 Reference Manual L231040, Rev AH The following is a depiction of damaged probes: Mounting the Transmitter. Align the 4/20 mA (or 0 and 100%) markings with the center of the top and bottom process connection. Mount the transmitter along the level gage and use a nut driver to tighten the clamps so the sensor probe of the transmitter is held securely (will not slip up and down).
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Page 10: Recommended Wiring
February 2025 Reference Manual L231040, Rev AH The drawing below depicts a gage mounted transmitter in the top mount remote electronics configuration. A typical Remote Mount Electronics Option In REMOTE MOUNT electronic options please support the NOTE: Please visit www.hartcomm2.org to learn more sensor probe at the elbow/condulet and then every 3 feet about HART Protocol. -
Page 11: Transmitter Sensor Tube
February 2025 Reference Manual L231040, Rev AH Hazardous CSA– Location Class I, Division 1 or Division 2, Groups B, C, D Approvals: Class II, Division 1 or Division 2, Groups E, F, G Class III IECEx– -40°C 85°C Ex tb III C T100°C Db IP66 Humidity SAMA PMC 31.1-5.2 Limits:... - Page 12 February 2025 Reference Manual L231040, Rev AH SelLngt 30.00in This menu can be used to change the level engineering units. It can be changed by incrementing/decrementing to one of the Lvl Unit following units: in, ft, mm, cm, m and then Temp Unit** pressing enter.
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Page 13: Features Description
February 2025 Reference Manual L231040, Rev AH This parameter helps ignore erroneous 10.0in/s Exit: Exit? readings from the transmitter’s surroundings. This signifies the last menu before the main If the user knows how fast the level can screen. If the user desires go back through the change in the vessel (i.e. -
Page 14: Advance Menus
February 2025 Reference Manual L231040, Rev AH 0.00in -Busy- DVANCE ENUS There is an “advance” menu incorporated into the MLT-350 ChgSgnl? Energy DCOffset HoldTime model. To access this menu press and hold the increment () button first then while holding the increment button Yes ... - Page 15 February 2025 Reference Manual L231040, Rev AH Loading Factory Defaults: 2. The first menu is “SelLngth” or select length. This is not the measuring range but the overall probe Enter into the “Defaults” menu by changing the “no” to length. This information can be found on the a “yes”.
- Page 16 February 2025 Reference Manual L231040, Rev AH Level Adjustment (LvlAdjst): up or down buttons to select “Yes” and press Enter. If the level gage indicator and level transmitter reading 6. When “Yes” is selected the next menu is the do not match or appear to be incorrect by a few inches “Config”...
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Page 17: Transmitter Calibration And Troubleshooting
February 2025 Reference Manual L231040, Rev AH TRANSMITTER CALIBRATION AND or hold time [µs], this is how long the Energy is held for. This parameter is recommended to stay within a certain TROUBLESHOOTING range. Also section “6.3 Changing Signal Parameters” ALIBRATION NOTICE: This option is also intended for mainly... -
Page 18: Basic Troubleshooting
February 2025 Reference Manual L231040, Rev AH NOTE: Physical and water damage are not covered user some point during ordering/purchasing process. Each transmitter has been under warranty. factory calibrated to meet end user requirements so Magnetic Indentation there is no need to recalibrate these transmitters unless It is possible for any magnetostrictive instrument to have the requirements have changed from the time of residual magnetic energy stored along the length of the... -
Page 19: Changing Signal Parameters
February 2025 Reference Manual L231040, Rev AH electronics from display then module out and DAC Trim putting it back in reseat electronics HANGING IGNAL ARAMETERS correctly. There are 3 parameters involved with “Energy Settings”. cutters or needle These parameters are Energy, DCOffset and HoldTime. nose pliers to grip protection •... -
Page 20: Mlt-350 Has Hart Protocol
February 2025 Reference Manual L231040, Rev AH MLT-350 HAS HART PROTOCOL Communication Protocol has been utilized in the MLT- 350. This section does not explain what HART Protocol is, ROTOCOL ENERAL NFORMATION please visit www.hartcomm2.org to learn about HART. The MLT-350 is a HART registered and certified instrument. - Page 21 February 2025 Reference Manual L231040, Rev AH Load User 1 Slot Load Save User 2 Slot Continued on Next Page Load Save User 3 Slot Load Save Signal Setup Energy DC Offset Hold Time Digital Level Alarms Alarms are: ...
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Page 22: Mlt-350 In A Sis
February 2025 Reference Manual L231040, Rev AH MLT-350 P ROOF MLT-350 IN A SIS To avoid any false alarms take appropriate steps ENERAL AFETY UIDELINES to notify control room that the instrument is being tested. The MLT-350 transmitters are designed to output a Utilize the pushbuttons and scroll through the 4/20mA output... -
Page 23: Identification
FACTORY AND ARE FULLY PROTECTED AGAINST DAMAGE OR LOSS DURING SHIPMENT. ANY CLAIMS FOR PARTS DAMAGED DURING SHIPMENT SHOULD BE SUBMITTED WITHIN 15 DAYS OF RECEIPT OF GOODS BY CUSTOMER. Emerson Automation Solutions- Magtech 3902 Magnolia Road, Pearland, Texas, 77584-1610, USA... -
Page 24: China Rohs
February 2025 Reference Manual L231040, Rev AH CHINA ROHS MLT-350 M ODEL ISCLOSURE MLT-350/351 China RoHS 管控物质超过最大浓度限值的部件型号列表 含有 List of MLT-350/351 Parts with China RoHS Concentration above MCVs 有害物质 / Hazardous Substances 六价铬 多溴联苯 多溴联苯醚 部件名称 铅 汞 镉 Hexavalent Polybrominated Polybrominated Part Name...
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