Emerson Magtech LTM-350 Series Instruction And Operation Manual Download

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August 2020

Reference Manual

L231040 Rev AD

Magtech LTM−350 Series

Magnetostrictive Level Transmitter for Liquid Level Measurement
Instruction and Operations Manual

Summary of Contents for Magtech LTM-350 Series

Page 1: ...August 2020 Reference Manual L231040 Rev AD 1 Magtech LTM 350 Series Magnetostrictive Level Transmitter for Liquid Level Measurement Instruction and Operations Manual ...

Page 2: ...do so may impair the protection provided by the equipment Do not perform any services other than those contained in this manual unless you are qualified Explosions could result in death or serious injury Verify the operating environment of the Magtech LTM 350 series transmitter is consistent with the appropriate hazardous locations certifications Do not remove the gauge cover in explosive atmosphe...

Page 3: ... Mount Transmitter Installation 7 3 1 Direct Insertion Transmitter Installation 8 3 2 General Installation Guidelines 8 3 3 Recommended Wiring 9 Section 4 Specifications Page 4 0 Transmitter Electrical Specifications 10 4 1 Transmitter Sensor Tube 11 Section 5 Menu Structure and Features Page 5 0 Pushbutton Operation 10 5 1 Menu Structure 11 5 2 Features Description 13 5 3 Advance Menus 13 Section...

Page 4: ...rmation 19 7 1 Hart Protocol Menus and Flowchart 20 Section 8 LTM 350 in a SIS Page 8 0 General Safety Guidelines 22 8 1 LTM 350 Safety Ratings 22 8 2 LTM 350 Proof Test 22 8 3 Safety Inspection 22 8 4 Identification 23 Section 9 Warranty Page 9 0 Warranty 23 Section 10 China RoHS Page 10 0 LTM 350 Model Disclosure 24 ...

Page 5: ... conﬁguration a single purpose ﬂoat rides up and down the sensor tube totally surrounding it A multi purpose ﬂoat may also be used to activate the sensor such a ﬂoat being placed inside a liquid isolation pipe i e MLI and strategically located within a certain longitudinal distance from the sensor tube In either case the ﬂoat has a somewhat lighter speciﬁc gravity than the liquid whose level is to...

Page 6: ...plied properly has potentially very high measurement resolution typically better than 0 001 inch In the machine tool industry such a high resolution is desirable In the liquid level measurement application however a resolution of 0 03 inch is more than adequate In a brief description the magnetostrictive principle consists of a wire extruded and heat treated under carefully chosen conditions to re...

Page 7: ...and the second output will be calibrated automatically The second time interval is timed in the same manner as the first one to derive the position of the heavier float The two floats require a separation of approximately three inches The float size geometry and magnetic strength all play a factor in how close the two floats can be without interfering with each other Only via HART Protocol 3 Prima...

Page 8: ...tube with the change in ﬂuid level If build up of process or contaminates should restrict the movement of the ﬂoat the transmitter sensor tube will have to be cleaned or the ﬂoat may have to be replaced with one that has a wider inside diameter The ﬂoats are designed to match the pressure and speciﬁc gravity for the process being measured and come in various materials ranging from stainless steel ...

Page 9: ...ed around and will not grip the sensor probe C Is incorrect because the clamp has been tightened too much and the probe may be damaged distorted 4 Remote Mount Electronics Option Due to process temperature vibration or accessibility the housing electronics of the LTM transmitter can be remote mounted as far as 25 ft The housing electronics are supplied with a pipe mount bracket that can be mounted...

Page 10: ...TM 351 only Hazardous Location Approvals FM Exp Cl I Div I Grp BCD Cl II Grp EFG Cl III CSA Exp Cl I Div I Grp BCD Cl II Grp EFG Cl III IECEx Exp Ex d IIC T5 Humidity Limits SAMA PMC 31 1 5 2 Vibration Limits SAMA PMC 31 1 5 3 RFI Limits SAMA PMC 31 1 20 to 1000 MHz up to 30V m 4 1 Transmitter Sensor Tube Material 316ss standard optional Hastelloy Monel Kynar coated Operating Temperature 50 to 302...

Page 11: ... Temp mA Out Range SelLngt h 30 00in Lvl Unit in ft mm cm m Temp Unit C F R K Sel PV Level Interface Sel Alrm FailHigh FailLow HoldOut ChgRnge Sel LRV Sel URV Yes No yes 0 00in 24 00in SelDam p 1 sec ROC Fltr 10 0in s TrmSnsr TrimZero TrimZero TrimSpan TrimSpan Span Yes No yes Busy 24 00in Busy Error if incorrect Offset 0 00in TrimDAC Trim 4mA Trim 20mA Yes No yes 120 3860 TstLoop LoopTest Yes No ...

Page 12: ...ll shift 3 00 inches higher than the Sel LRV 0 00 in original point It is recommended to leave this at 0 00 most of the time unless a special circumstance arises Press enter to go the next screen Select Upper Range Value URV This is the 20 00mA 100 00 point on the sensor This value should only be decremented Changing this parameter will change the measuring range or span of the transmitter Sel URV...

Page 13: ...ace or Temp or mA Out or Range Rate of Change RoC Filter The RoC filter is a continuous monitor of how fast the rate the level is rising and falling It is also an excellent tool to help eliminate any temporary spontaneous noise that may be present in field For example if the level in a tank cannot rise or fall faster than 12 0 in s then the setting for the RoC filter should be set to 12 0 in s or ...

Page 14: ...ettings or load settings saved in slots labeled Sensor 1 Sensor 2 or Sensor 3 if utilized by end user If desired one electronics module can save settings for 3 other sensor probes by calibrating the electronics module to a particular sensor probe then saving those settings into slots labeled sensor 1 2 or 3 Change the menu screen from load to save Then the user can save current setting into slots ...

Page 15: ...nt level menu Enter the known current level in the vessel tank in engineering units and press enter The calibration should take place and the transmitter should be operational If the next menu appears then the operation was successful If the menu reverts back to the beginning of the 1pt Cal menu then the operation was unsuccessful Further troubleshooting may be necessary if the operation is unsucc...

Page 16: ...al menu in the special features menu is ChngSgnl or change signal option The feature allows the adjustment of the signal being sent down the sensor probe It can be utilized when one electronics module is being utilized to save settings for various different length sensor probes This menu has 3 parameters that can be adjusted The first is Energy it is increased for a longer sensor probe and decreas...

Page 17: ...and has been approved by the end user at some point during the ordering purchasing process Each transmitter has been factory calibrated to meet end user requirements so there is no need to recalibrate these transmitters unless the requirements have changed from the time of purchase delivery to installation If the need arises to calibrate these units to a new range please carefully read and follow ...

Page 18: ...s are not reversed Electronics not making proper connection to power connector Make sure the electronics module is seated properly Open the front cover where the LCD is and firmly push on the Magtech text A good way to tell if the electronics are not seated properly is by making sure the protection screws are not physically higher than the outside of the housing Sometimes pulling the electronics m...

Page 19: ...gy is sent down for Symptom Transmitter is erratic i e output going from correct reading to failure mode Possible Resolution Increase Energy Settings 1 Unlock the pushbuttons by moving the blue jumper to the left Hold the UP button for 1sec 2 While holding the UP button also hold ENTER button together for 3 secs 3 The menu should change to ComPort release the buttons 4 Bypass this menu by pressing...

Page 20: ... Status Operation Status Calibration Status Level Alarm Status Calibration D A trim Full Level trim Full Temp trim 3 Calibration Review Level Gain Lvl UTP Value Live Measurements Level Pulse Sensor UTP Value Interface Pulse 4 Lvl LTP Value Tic Limit Sensor LTP Value Temperature Gain 3 Temperature Offset 3 RTD UTP Value 3 A D UTP Value 3 RTD LTP Value 3 A D LTP Value 3 DAC Zero DAC Full Basic Setup...

Page 21: ...ode Ao Alrm typ D A trim Loop Test HART Output Poll addr Num req preams HART Information Manufacturer Model Unique ID serial Number Date Sales Order Purchase Order Tag Long Tag Message Descriptor Revision Universal rev Fld dev rev Final asmbly num Software rev Hardware rev 1 When Interf is PV Interf is displayed 2 Only Applies when interface float is included 3 Only Applies when temperature sensor...

Page 22: ...350 Proof Test 1 To avoid any false alarms take appropriate steps to notify control room that the instrument is being tested 2 Utilize the pushbuttons and scroll through the main menus until TestLoop is shown 1 3 Enter into this menu and modulate the current output from 3 5 to 20 8 mA while verifying the current output with a multimeter or the control room If this function does not work then instr...

Page 23: ...iﬁed by persons that are not authorized by Magtech 2 Products subjected to misuse negligence or accidents 3 Products that are connected installed or otherwise used in such a way not in strict accordance with manufacturer s instructions This warranty is in lieu of any other warranty expressed or implied by any party other than Magtech Repairs and or replacements shall be at the sole discretion of M...

Page 24: ...ybrominated diphenyl ethers PBDE 电子组件 Electronics Assembly X O O O O O 本表格系依据SJ T11364的规定而制作 This table is proposed in accordance with the provision of SJ T11364 O 意为该部件的所有均质材料中该有害物质的含量均低于GB T 26572所规定的限量要求 O Indicate that said hazardous substance in all of the homogeneous materials for this part is below the limit requirement of GB T 26572 X 意为在该部件所使用的所有均质材料里至少有一类均质材料中该有害物质的含量高于GB T 26572所规定的限量要...

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