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LD300Series

Pressure Transmitter for Pressure, Level and Flow Applications


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Features

 
  • ± 0.04% high performance option;
  • ± 0.2% of URL stability guarantee for 12 Years;
  • 120:1 rangeability;
  • Span as small as 50 Pa (0.2 inH2O) up to a range limit of 40 MPa (5800 psi);
  • Static pressure up to 320 bar;
  • Direct digital capacitance sensing (no A/D conversion);
  • True non-interactive zero and span;
  • Local zero and span adjustment;
  • Remote calibration and parameterization;
  • Transfer functions: linear, V x, V x and V x ;
  • Tank linearization;
  • Alphanumerical LCD indication;
  • Small and lightweight;
  • Explosion proof and weather proof housing approved (IP67);
  • Intrinsically safe certification;
  • Signal simulation for loop tests;
  • Non-volatile flow totalization;
  • Configurable user unit;
  • Configurable local adjustment;
  • EMC (Electromagnetic Compatibility) according to IEC 61000-6-2, IEC 61000-6-4 and IEC 61326;
  • Write protection function;
  • Three protocols options: HART®, FoundationTM Fieldbus, PROFIBUS PA.
  • Supported by DD, DDL and FDT/DTM

 

For all features, technical characteristics, performance, specifications and ordering code, see LD300 Series catalog.

 

LD301 - HART® - 4 to 20 mA Pressure Transmitter Models

  • Update output current in 100 ms with 0.75 µA/bit resolution;
  • Improved performance due to dedicated math co-processor;
  • Multi-drop operation mode;
  • PID control function;
  • Supports DTM and EDDL;
  • Bi-directional flow measurement;
  • With FMEDA analysis and MTBF of 244 years.

 

LD302 - FoundationTM Fieldbus Pressure Transmitter Models

  • 17 different types of function blocks for control strategies and advanced diagnostics;
  • Up to 20 function blocks;
  • Execution of up to 29 external links;
  • 12 mA consumption;
  • Dynamic block instantiation improves interchangeability;
  • Fieldbus Foundation registered and ITK approved;
  • MVC enabled;
  • MTBF of 186 years.

 

LD303 - PROFIBUS PA Pressure Transmitter Models

  • 12mA consumption;
  • Function blocks for analog input and totalization;
  • Integrated to SMAR PROFIBUS View and Simatic PDM
  • Supports DTM and EDDL;
  • Profile 3.0 improves interchangeability;
  • MTBF of 186 years

 

Transmitter's Applications
 

Differential Pressure - LD300D and LD300H Series 
Pressure is applied to high and low sides and differential pressure is measured. High static pressure is supported by LD300H models.

Flow - LD300D and LD300H Series
The differential pressure is generated by a primary flow element and the square root function supplies the flow measurement.

Absolute Pressure - LD300A Series
The pressure is measured at the high side of the transmitter and the low side is at zero absolute reference due to a sealed chamber with vacuum applied.

Gage Pressure - LD300M Series
The pressure is measured at the high side of the transmitter and the low side is open to the atmosphere, providing true local atmospheric reference.

Level - LD300L Series
The transmitter has a flange mounted unit with a flush diaphragm for direct installation on vessels. Extended diaphragms are also available.

 
Application with Remote Seals
 

LD300 Series can be assembled with separate diaphragm seals in either one or both sides of the sensor. SR301 is a remote seal designed for chemical and thermal isolation. SR301 options include: flanged "T", flush connection, threaded, sanitary and flanged with extension.

Typical applications for LD300 Series with remote seals:

  • Corrosive process fluid;
  • Suspended solids or viscous process fluid;
  • Process fluids that may freeze or solidify;
  • Process temperatures higher than supported by transmitters;
  • Replaces impulse lines and condensate legs;
  • Bubble system.
 

See the SMAR SR301 Series catalog for further information regarding application and specification.

 
Application with Sanitary Connections
 

LD300S Series are specially designed for food and other applications where sanitary connections are required. With threaded or "tri-clamp" connections, it allows for easy and quick maintenance and cleaning. The flush connection enables deposits removal without disconnecting the seal.

Tri-clamp and other connections are compliant to 3A (74-02) standard for food grade applications. For further information, see the SMAR SR301 Series Catalog.
 



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