Foxboro 244LD Intelligent Buoyancy Transmitter

Buoyancy Transmitter, Level, Digital, Liquid Level, Interface Level, Liquid Density Measurement

The intelligent transmitter 244LD is designed to perform continuous measurements for liquid level, interface or density of liquids in the process of all industrial applications. The measurement is based on the proven Archimedes buoyancy principle and thus extremely robust and durable. Measuring values can be transferred analog and digital. Digital communication facilitates complete operation and configuration via PC or control system. Despite extreme temperatures, high process pressure and corrosive liquids, the 244LD measures with consistent reliability and high precision. It is approved for installations in contact with explosive atmospheres. The 244LD combines the abundant experience of FOXBORO ECKARDT with most advanced digital technology.


  • Communication HART, PROFIBUS PA or FOUNDATION Fieldbus
  • Conventional operation with local keys
  • Easy adaptation to the measuring point without calibration at the workshop
  • Backdocumentation of measuring point
  • Continuous self-diagnostics
  • Configurable safety value
  • Software lock for local keys and reconfiguration
  • Approved for SIL applications
  • Simulation of analog output for loop-check
  • Local display in %, mA or physical units
  • Signal noise suppression by Smart Smoothing
  • Linear or customized characteristic
  • Process temperature from –196 °C to +400 °C
  • Materials for use with aggressive media
  • Micro sinter metal sensor technology (Separate mounting of sensor and amplifier with remote amplifier mounting kit)


Range of Product Level
Product or Component Type Buoyancy transmitter
Product Specific Application Liquid level measurement
Interface level measurement
Density measurement
[Us] rated supply voltage 12…42 V DC
Kit composition Transmitter
displacer element (to be purchased seperately)
Housing material Aluminium
Stainless steel
Pressure Rating 14.50…7251.89 psi (1…500 bar)
Safety level SIL2
Communication port protocol HART, 4…20 mA
Display Type LCD display
Measurement accuracy +/- 0.2 % of reading
Measurement range 0…10 m
0…30 ft
Type of measurement Level inferred by buoyant force
Connector type DIN flange
ASME flange
JIS flange
Ambient air temperature for operation -321…932 °F (-196…500 °C)
Ambient Air Temperature for Storage -40…185 °F (-40…85 °C)
Product certifications CE
Standards EN/IEC 61508
IP Degree of Protection IP66
Packing Units
Unit Type of Package  PCE
Number of Units in Package  1


Document Downloads

Data Sheet

Instruction Sheet


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