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LMK 351 Screw in Transmitter

Brand: BD Sensors

The screw-in transmitter LMK 351 has been designed for measuring small system pressure and level measurement in container. 

The LMK 351 is based on an own-developed capacitive ceramic sensor element. 

Usage in viscous and pasty media is possible because of the flush mounted sensor. 

For the usage in aggressive media a pressure port in PVDF and the diaphragm in Al₂O₃ 99.9% is available. 

An intrinsically safe version complete the range of possibilities.

Specifications

Brand

Accuracy

  • ≤ ± 0.25 % of FSO According to IEC 60770
  • ≤ ± 0.35 % of FSO According to IEC 60770

Applications

  • Environmental Engineering
  • Fuel & Oil
  • Plant & Machine Engineering
  • Viscous Media

Approvals & Certifications

  • ATEX: IBExU05-ATEX-1070 X, 2014/34/EU
  • CE-Conformity
  • EMC: Emission & Immunity According to EN 61326 & 2014/30/EU
  • REACH
  • RoHS
  • TÜV NORD

BSP Connection

  • G 1-1/2"

Capacitance

  • Connecting Cables Capacity: 160 PF/m
  • Input Capacitance: 27 NF

Compensated Temperature

  • -20° to 80° C (-4° to 176° F)

Consumption

  • Signal Output Current: Max.
  • Signal Output Voltage: Max.

Current

  • Input Current: 93 mA

Diaphragm Material

  • Ceramic Al₂O₃ 96 %, Al₂O₃ 99.9 %

Electrical Connectors

  • Binder Series 723 5-Pin
  • M12 x 1 Plug 4-Pin
  • Plug (ISO 4400)

Electrical Protection

  • Reverse Polarity
  • Short Circuit

Enclosure, Body Material

  • 316L Stainless Steel
  • PVDF

Environmental Protection

  • IP65
  • IP67
  • IP68

Inductance

  • Connecting Cables Inductance: 1 µH/m
  • Input Inductance: 5 µH

Input Power

  • 660 mW

Load Effect

  • 0.05 % of FSO / kΩ

Materials of Construction

  • Pressure Port: 316L Stainless Steel, 1.4401
  • Pressure Port: PVDF

Measuring Time

  • Mean Measuring Time: 5 seconds

Mounting Position

  • Installation Position: Any

Nominal Pressure

  • psi: 0.58 to 290.1 (kPa: 4 to 2,000, bar: 0.04 to 20)

Output

  • 0-10 V, 3-Wire
  • 4-20 mA, 2-Wire

Overpressure & Static Pressure Limits

  • Overpressure: psi: 29.01 to 652.7 (kPa: 200 to 4,500, bar: 2 to 45)

Power Supply Effect

  • 0.05 % of FSO / 10 V

Pressure Cycles

  • Operational Life: > 100 Million Loading Cycles

Pressure Range

  • bar: 0.03 to 19.61
  • kPa: 3.92 to 1,961
  • meter WC 0.4 to 200
  • psi: 0.56 to 284.5

Process Temperature

  • -40° to 125° C (-40° to 257° F)

Resistance

  • Minimum 10 kΩ

Response Time

  • Maximum
  • Mean Response Time: ≤ 200 ms

Seat / Seal Material

  • EPDM for -40° to 125° C (-40° to 257° F)
  • FFKM for -15° to 125° C (5° to 257° F)
  • FKM for -40° to 125° C (-40° to 257° F)

Shock

  • 100 G, 1 ms According to DIN EN 60068-2-27

Stability

  • Long Term Stability: ≤ ± 0.1 % of FSO/Year

Storage Temperature

  • -40° to 100° C (-40° to 212° F)

Supply Voltage

  • 12.5-32 Vdc
  • 9-32 Vdc

Temperature Coefficient

  • Tolerance Band: ≤ ± 0.1 % of FSO/10 K

Temperature Range

  • Electronics / Environment: -40° to 85° C (-40° to 185° F)

Turn-On Time

  • 700 ms

Vibration

  • 10 G RMS (20 to 2000 Hz) According to DIN EN 60068-2-6

Voltage

  • Input Voltage: 28 V

  • Mechanical and Plant Engineering
  • Laboratory
  • Environmental Industry

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