ABB MEASUREMENT & ANALYTICS | DATA SHEET LMT100 magnetostrictive level transmitter High accuracy liquid level and interface level detection

— Measurement made easy K–TEK Level products — Features • High accuracy: 0.01 % of full scale or ±1.27 mm • No re–calibration needed: set it and forget it • Superior sensor (patent #5,473,245) • Local indication with HMI display • Dual compartment housing with separate field terminal compartment • Loop powered to 22 m (75 ft) probe length • Total and/or interface level measurement • Pressure to 165.48 bar (2400 psig) Std. 124.1 bar (1800 psig) • Temperature range: –195.5 to 426.6 °C (–320 to 800 °F) with options • Field replaceable/upgradable electronics module • Built–in RFI/EMI filter • Digital...

— Principle of operation: The LMT100 is based upon the magnetostrictive principle. The device electronics generates a low energy current pulse at fixed intervals. 2 The electrical pulses create a magnetic field which travels down a specialized wire inside the sensor tube. 3 The interaction of the magnetic field around the wire and the magnetic float causes a torsional stress wave to be induced in the wire. This torsion propagates along the wire at a known velocity, from the position of the magnetic float and toward both ends of the wire. 4 A patented sensing element placed in the transmitter...

LMT100 MAGNETOSTRICTIVE LEVEL TRANSMITTER | DS/LMT100-EN REV. D Electronic transmitter Repeatability ±0.005 % of full scale or 0.31 mm (0.012 in), whichever is greater Non-linearity ±0.01 % of full scale or 0.86 mm (0.034in), whichever is greater Measuring accuracy ±0.01 % of full scale or 1.27 mm (0.050 in), whichever is greater1 Supply voltage 12 to 43 V DC for 4 to 20mA HART loop powered, 9.0 to 32 V DC for Foundation Fieldbus Output/Communications 4 to 20mA HART7 or FOUNDATION Fieldbus ITK 6.3.0 User interface Interactive display, DTM, EDDL, FDI with NE107 messaging Write...

— HMI indicator (option) • Display of waveform for device performance confirmation • Display of the current level as well as interface or the temperature of the measuring medium (optional) • Application–specific visualizations which the user can select. Four operator pages can be configured to display multiple values in parallel • Plain text fault diagnostics in conformance to NE107 • Menu–guided parameter settings with four buttons • 'Easy set–up' function for fast commissioning • Parameter settings of the device through the front glass with the housing closed • During ongoing operation, the...

— Electrical connections Devices with HART communication Current output/HART output Terminal PWR/COMM + PWR/COMM – EXT.METER Function/comment Power supply, current output/HART output Not assigned 1 Internal earthing terminal 2 Power supply, current output/ HART output 3 Load resistance 4 Power supply/supply isolator 5 PLC/DCS 6 HART handheld terminal 7 External indicator 8 External earthing terminal 9 Terminal for external indicator 10 Laptop For connecting the signal voltage/supply voltage, twisted cables with a conductor cross–section of 0.8 to 0.35 mm2 (18 to 22 AWG) and a maximum length of...

— ...Electrical connections Power supply Devices with HART communication Terminals PWR/COMM +/PWR/COMM – Supply voltage Non–Ex: 12 to 42 V DC Ex limitation voltage: 30 V Residual ripple Power consumption Devices with Foundation Fieldbus communication Terminals Bus connection, polarity insensitive Supply voltage Non–Ex: 9 to 32 V DC Ex limitation voltage: 24V (for FISCO: 17.5V) Residual ripple Power consumption Current output/HART output Only for devices with HART communication Terminals: PWR/COMM +/PWR/COMM – In HART communication, the smallest load is RB = 250 Ω. The load is RB is calculated...

— ...Probe pressure/temperature charts Probe pressure/temperature charts (continued) MAWP vs Temp Operating Temperature Operating Temperature Note: With SEU wire option temperatures up to 219.4 °C (427 °F) Operating Temperature Operating Temperature Note: Can be cleaned for a maximum of one hour at 149 °C (300 °F)

LMT100 MAGNETOSTRICTIVE LEVEL TRANSMITTER | DS/LMT100-EN REV. D Notes: 1. Can be cleaned for a maximum of one hour at 149 °C (300 °F) 2. Integral RTD (SER and STL options) not availab

LMT100 MAGNETOSTRICTIVE LEVEL TRANSMITTER | DS/LMT100-EN REV. D ...Probe selection guide Probe selection guide (continued) Maximum Minimum Maximum Minimum process Maximum process Probe type Probe diameter insertion length pressure pressure temperature temperature Metal sensor well with removable flexible braided stainless steel sensor element Minimum standard process connection size % in compression fitting, DN25/ 1 in ANSI flange Metal sensor well with removable stainless steel rigid sensor 121 °C (250 °F) -80 °C (-112 °F) 230 °C (450 °F) 427 °C (800 °F) Segmented sensor well...

LMT100 MAGNETOSTRICTIVE LEVEL TRANSMITTER | DS/LMT100-EN REV. D Float selection guide LMT100 with / in OD sensor (probe types - R1, R2, R3, H1, H2, C1, C2,W1, W2, W3) MAX. O.D. LENGTH Min. I.D. *Titanium pressure ratings are valid to 100 °F. For higher temperatures, multiply the titanium pressure ratings by the factors listed to determine revised ratings: 65.6 °C (150 °F) = 0.84 93.3 °C (200 °F) = 0.74 121.1 °C (2 50 °F) = 0.64 148.9 °C (300 °F) = 0.55 176.7 °C (350 °F) = 0.48 Floats can be supplied with coatings for corrosion resistance and resistance to build-up. Consult factory....

LMT100 MAGNETOSTRICTIVE LEVEL TRANSMITTER | DS/LMT100-EN REV. D LMT100 with xh in OD sensor (probe types - R4, R5) 20D 3.55 9.02 C-276 6 15.24 0.68 1.72 0.49 *Titanium pressure ratings are valid to 100 °F. For higher temperatures, multiply the titanium pressure ratings by the factors listed to determine revised ratings: 65.6 °C (150 °F) = 0.84 93.3 °C (200 °F) = 0.74 121.1 °C (2 50 °F) = 0.64 148.9 °C (300 °F) = 0.55 176.7 °C (350 °F) = 0.48 Floats can be supplied with coatings for corrosion resistance and resistance to build-up. Consult factory.