Span as small as 50 Pa (0.2 inH2O) up to a range limit of 40 MPa (5800 psi);
Up to 52 MPa static pressure (7500 psi);
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 ;
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
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 LD300HSeries The differential pressure is generated by a primary flow element and the square root function supplies the flow measurement.
Absolute Pressure - LD300ASeries 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 - LD300MSeries 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 - LD300LSeries 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;
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.
Application with Manifold Valves
SMAR manifold valves provide all of the necessary safety for field maintenance ofLD300 Series transmitters. Working at pressures up to 6,000 psi, they are easy to handle and lighter than others in the market.