Continuous measurement under tough conditions
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Siemens Automation and Drives product story
Edited by the Engineeringtalk editorial team
Oct 20, 2003
The Sitrans LC 500 provides reliable continuous level and interface measurement, even in the critical conditions often found in the chemical and hydrocarbon processing industries.
The Sitrans LC 500 is a high-performance field instrument that provides reliable continuous level and interface measurement, even in the critical conditions often found in the chemical and hydrocarbon processing industries.
It has been designed for extreme conditions characteristic of high-pressure coalescers, fractional distillation columns, catalytic crackers, glycol regenerators, heater treaters, gas and oil tankers, FPSO ships and LNG processing plants.
The smart, two-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 setup.
One-point calibration makes set-up possible without shutting down the production process.
Full-function diagnostics comply with Namur NE 43 for both local and remote diagnostics, showing all the relevant variables at the same instant.
The Sitrans LC 500 provides unsurpassed performance in terms of accuracy and long-term stability.
The unique 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 420kHz transmitter provides accurate, repeatable readings even in cases of extreme product build-up.
The unique probe design has a high integrity seal, which allows for reliable use in high pressure/high temperature conditions as well as in high pressure/low temperature conditions.
The PFA probe-insulating sleeve is chemically resistant.
This special insulated probe design prevents "cold flow of plastic" often associated with competitors' devices, ensuring stable measurement without the need for frequent recalibration.
The instrument is effective in temperatures from -200 to +400C and pressures from full vacuum to 525bar.
An integrated zener safety barrier blocks excess energy from the transmitter to the sensor for intrinsically safe conditions.
A 55kV ESD protection feature protects the transmitter from electrostatic discharge.
The Sitrans LC 500 is approved for hazardous conditions, and has Lloyd's Register approval for use in marine applications.
The Sitrans LC 500 offers an auxiliary milliamp output and a solid-state switch, enabling the instrument to perform the additional function of a level controller when these are connected to a relay that activates a pump.
Modular construction features a full range of probe options and process connections, as well as customized configurations, to suit virtually any application.
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