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.

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);
• 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 ;
• 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.

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. Top

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. Top

Application with Manifold Valves:
Smar manifold valves provide all of the necessary safety for field maintenance of LD300 Series transmitters. Working at pressures up to 6,000 psi, they are easy to handle and lighter than others in the market. Top

Programming & Diagnostics

LD300 Series are available in three different technologies: HART? (LD301), FoundationTM Fieldbus (LD302) and PROFIBUS PA (LD303). These instruments can be configured with Smar software and other manufacturer configuration tools. Local adjustment is available in all LD300 Series. It is possible to configure zero and span, totalization, set point and other control functions using the magnetic screwdriver. Smar has developed Asset View, which is a user-friendly Web Tool that can be accessed anywhere and anytime using an Internet browser. It is designed for management and diagnostics of field devices to ensure reactive, preventive, predictive and proactive maintenance. Top

HART, Foundation Fieldbus and Profibus Models:

	LD301 - HART?Models
	LD302 - FoundationTM Fieldbus Models
	LD303 - Profibus PA Models