Siemens LC 500 instruction manual Sitrans Lc, Applications, Introduction

SITRANS LC 500

SITRANS LC 500 is a high performance 2-wire capacitance instrument for continuous level and interface measurement in extreme or critical conditions. It uses a unique frequency- based measurement system and patented Active-Shield technology to deliver highly accurate, repeatable results. The measurement is unaffected by moisture, vapors, foam, temperature and pressure variations, or material build-up around the mounting glands.

SITRANS LC 500 combines a sophisticated, easy-to-adjust transmitter (MSP-2002-2) with a measurement electrode and process seal selected from a range of options1, to suit a wide variety of applications. The advanced electronics and integrated local display provide for one-step calibration without interrupting the process, and the probe shield design eliminates the need for frequent recalibration.

SITRANS LC 500 can be used as a level controller, by connecting the mA output and/or the solid-state switch to a relay, and activating a pump via an auxiliary power circuit.

The SITRANS LC 500 is equipped with:

•Smart 2-wire transmitter

•Remote adjustable commissioning / control capabilities via HART2

•Analog (2-wire) 4 to 20mA / 20 to 4 mA output

•Solid-state and Current detection (4 or 20 mA / 20 or 4 mA, two-state functionality)

•Adjustable hystereses on/off for solid-state output and for current signal

•Damping functionality

•Signal current (measurement/detection) according to NAMUR NE 43

•Integrated local display for commissioning and services activities

•Full range of local/remote diagnostic facilities

•Pre-detection of trip point for high safety requirements

•Polarity-insensitive current loop

•Integrated zener safety barrier for Intrinsically Safe applications

Applications

•General Purpose, Dust Ignition Proof, Explosion Proof, and Intrinsically Safe

•A wide range of applications in high pressure and temperature, chemically aggressive, and other extreme measurement/detection environments

•Liquids, Solids, Quality, and Interface measurement

•Viscous non-conducting and conducting liquids

1.Customized probe configurations can also be provided.

2.HART® is a registered trademark of the HART Communications Foundation, Austin, Texas, USA.

7ML19985GE01 SITRANS LC 500 – INSTRUCTION MANUAL Page 1

Introduction