Smart level and interface measurement

The new Sitrans LC 500 provides reliable continuous level and interface measurement, even in the critical conditions found in the chemical and hydrocarbon processing industries

The new Sitrans LC 500 provides reliable continuous level and interface measurement, even in the critical conditions found in the chemical and hydrocarbon processing industries.

Featuring HART communications, this 2-wire instrument from Siemens Automation and Drives has been designed for the temperature and pressure extremes in applications such as high pressure coalescers, fractional distillation columns, glycol regenerators, heater treaters, gas and oil tankers, FPSO (Floating Production Storage Offloading) ships and LNG (Liquefied Natural Gas) processing plants.

The inverse-frequency capacitance technology and patented Active-Shield ensure reliable measurement even in extreme material build-up.

It complies with NAMUR standards, is approved for hazardous conditions, and has Lloyd's Register approval for use in marine applications.

The Smart, 2-wire transmitter has HART communications for remote commissioning and inspection.

Its advanced electronics provide for one-step calibration and local display for easy on-site installation and set-up.

One-point calibration makes set-up possible without shutting down the production process.

Full-function diagnostics comply with NAMUR NE 43 standards for both local and remote diagnostics, showing all the relevant variables at the same instant.

Several features ensure accuracy and long-term performance reliability.

The inverse-frequency approach to capacitance technology provides high resolution.

The patented Active-Shield technology protects the measurement from the effects of moisture, vapours, foam, material build-up, and temperature or pressure variations.

The powerful 420 kiloHertz transmitter provides accurate, repeatable readings even in cases of extreme product build-up.

The probe design has a high integrity seal, and the PFA (PerFluoro Alkoxy alkane) probe-insulating sleeve is chemically-resistant.

The special insulated probe design prevents "cold flow of plastic" often associated with conventional devices, ensuring stable measurement without the need for frequent recalibration.

The instrument is effective in temperatures from minus 200 to plus 400 degrees Celsius and pressures from full vacuum to 525 bar.

The transmitter is protected from electrostatic discharge, and an integrated zener barrier blocks excess energy from the transmitter to the sensor for intrinsically safe conditions.

The instrument may perform the additional function of a level controller when the auxiliary output and solid state switch are connected to a relay that activates a pump.

A full range of probe options and process connections, as well as custom configurations, are available to suit virtually any application.

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