Revision 1
SLN 700 SmartLine NCR Level Transmitter User’s Manual
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Introduction
1.1 Overview
The SLN 700 SmartLine 80 GHz Non-Contact Radar transmitter is an electronic instrument
designed to measure levels of liquid and solid materials. Non-Contact Radar (NCR) transmitters
use Frequency Modulated Continuous Wave (FMCW) radar signals that are reflected by the
material to be measured. The difference in frequency between the received and transmitted
signal is directly proportional to the distance to the liquid and can be measured with high
precision. Its small beam angle and small antenna size makes it easy to install. In comparison to
other level measurement technologies, NCR provides a highly-accurate, cost-effective, reliable
measurement in applications where Guided Wave Radar (GWR) are not suitable.
1.2 Transmitter Models
The SLN 700 SmartLine 80 GHz NCR transmitter is available as a part of the family of
SLN700L models for liquid and SLN700S for solid applications. The pressure and temperature
range is -40 to 200°C/-1 to 40 bar for both, and each model is available with a range of flange or
threaded antenna, lens diameters, process connection, and accessories to suit most applications.
1.3 Transmitter Components
Overview of components
As shown in
, the transmitter consists of:
•
Electronics housing containing the core measurement module and optional display
module
•
Process connection
•
RF antenna
Figure 1-1 Components of the Level transmitter
