Magnetostrictive Level Transmitter LMT100 ABB

High accuracy liquid level and interface level detection

The LMT Series of level transmitters is a modular range of field mounted, advanced microprocessor-based electronic transmitters, utilizing multiple sensor technologies. Accurate and reliable measurement of liquid level and interface are provided in even the most difficult and hazardous  industrial environments. The LMT100 is also available with optional temperature measurement.

KEY FEATURES:

  1. High accuracy: 0.01% of full scale or + 1.27mm
  2. Never requires re-calibration: set it & forget it
  3. Superior Sensor (Patent #5,473,245)
  4. Local indication with HMI display
  5. Dual compartment housing with separate field
    terminal compartment
  6. Loop powered to 22m (75ft) probe length
  7. Total and/or interface level measurement
  8. Pressure to 165.48 bar (2400 psig) Std. 124.1 bar (1800 psig)
  9. Temperature range: -195.5 to 426.6ºC (-320 to 800ºF)
    with options
  10. Field replaceable/upgradable electronics module
  11. Built-in RFI/EMI filter
  12. Digital communications

Options:

  1. Two level indications
  2. RTD for process temperature measurement
  3. Glass viewing window
  4. 316/L Stainless Steel enclosure
  5. 21-point linearization table

Magnetostrictive Level Transmitter LMT100

TECHNICAL SPECIFICATIONS:

Repeatability:± 0.005% of Full Scale or 0.305 mm (0.012 in), whichever is greater
Non-linearity: ± 0.01% of Full Scale or 0.864 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 42 Vdc – 4-20mA HART loop powered
Output/Communications: 4-20mA HART7®
User Interface: Interactive display, DTM, EDDL with NE107 messaging
Power consumption:
4-20mA:                           at 36.0 Vdc – 3.6mA 0.13 watts; 21mA 0.76 watts
at 12.0 Vdc – 3.6mA 0.043 watts; 21mA 0.25 watts
HART mode (4.0mA):      at 36.0 Vdc 0.144 watts
at 12.0 Vdc 0.048 watts
Maximum line resistance:
4-20mA:                           at 36.0 Vdc and 21mA, 1142 ohms*
at 24.0 Vdc and 21mA, 571 ohms
at 12 Vdc and 21mA, < 72 ohms**
*Maximum allowable with HART® communication is 700 ohms
**See the current/resistance chart
HART mode (4.0mA):       < 650 to 700 ohms
Polarity protection: 4-20mA, Diode in series with loop, FOUNDATION Fieldbus and Profibus PA,
polarity insensitive
Update rate: 10 measurements per second
Minimum measuring span:2 mm (3.0 in), consult factory if smaller span is required
Damping: Field Adjustable, Range: 0.1 to 60 seconds
Alarm output: NE43, Software or Hardware selectable. Upscale (21 mA) or Downscale (3.6 mA)
Surge Suppression Integral surge suppression available with option code S1
Ambient temperature: -40 to 85ºC (-40 to 185ºF) Ambient2
Humidity: 0 to 100% RH
Linearization: 21 Point Table Available
Temperature sensor (optional): 1000 ohm Pt RTD, option code SER or STL
Temperature tolerance class: IEC 60751 Class B, + (0.3+0.005[t]), -700 to 2300C
Enclosure: Dual Compartment
Enclosure material: Cast Low Copper Aluminum with Powder Coat or 316 Stainless Steel
Device tag material: AISI 316 Stainless Steel
Electrical connection: Two M20 x 1.5 or two 1/2in. FNPT, adapters and bus connectors also available
Ingress protection: IP66, NEMA 4X

Notes:
1 Measurement accuracy is recorded at factory ambient conditions (23.88 °F +/-5.6 °C (75 °F +/-10 °F)) using a calibration magnet. Accuracy may be further influenced by other factors such as float
hysteresis, installation, process conditions and ambient conditions.
2 Some agency approvals may differ.
HART® is a registered trademark of the FieldComm Group

SENSOR TUBE

  • Material:
    Standard: 316/L Stainless Steel
    Options:   Alloy 20, Hastelloy® C-276, FEP-TEFLON® jacketed, electropolished 316/316L Stainless
    Steel, others on requestProcess temperature:
    Standard: -195.5 to 121.1ºC (-320 to 250ºF)
    Options:   up to 427ºC (800ºF) with options

    Process pressure:
    Standard: -1.0 to 124.1 bar @ 149ºC (-14.7 to 1800 psig @ 300ºF)
    Options:   165.47 bar (2400 psig) maximum with the HP probe type

  • Probe length:
    Standard: 304.8mm to 9.14m (1 to 30 ft)
    Options:   22.86m (75ft) maximum w/ W7 flexible probe in sensor wellProbe length tolerance:
    Standard/Options:± 3.2mm (0.125in) up to 3.0m (10ft); +/- 6.4mm (0.25in) up to 6.0m (20ft); ± 9.0mm (0.35in) up to 9.0m (29.5ft); +/- 25.4mm (1.0in) up to 22.86m (75ft)

    Mounting:
    Standard:3/4 in MNPT compression fitting
    Options:plugs, threaded fittings, loose flanges a

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