Appendix, 4 glossary – KROHNE OPTIWAVE 5200 C_F EN User Manual

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APPENDIX

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OPTIWAVE 5200 C/F

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07/2013 - 4001904902 - HB OPTIWAVE 5200 R02 en

10.4 Glossary

Dead zone

Non-measurement zone.

Dielectric constant

An electrical property of the product to be measured used in Radar
measurement. Also known as εr, DK and relative permittivity. Defines the
strength of the wave reflected back to the device's signal converter.

Distance

The distance from the face of flange to the level (1 product) or the surface
of the top product (2 or more products). See the diagrams at the end of this
section.

DTM

Device Type Manager. A driver for use in the PACTware™ program. All data
and functions of the device are included in it.

Electromagnetic compatibility

Electromagnetic compatibility Defines how much a device influences or is influenced by other devices that

generate electromagnetic fields during operation. Refer to European
standard EN 61326-1 for further details.

FMCW

Frequency-modulated continuous-wave radar technology. The signal is
continuously present, but the frequency is modulated, usually in
successive linear ramps over time (frequency sweeps).

Hazardous area

An area with a potentially explosive atmosphere. Trained personnel can
install and use a device in this area. The device must be ordered with the
appropriate options. The device requires approvals (ATEX, IECEx, FM, CSA,
NEPSI etc.) related to site specifications. You can find more data about
hazardous areas in the Ex Manuals and Ex Certificates of Compliance.

Horn (cone) antenna

A common antenna for most applications. It is used for the controlled
emission and collection of radar signals.

Interference signals

False radar reflections.

Level

Height from the bottom of the tank (user-defined) to the surface of the top
product (Tank height – distance). See the diagrams at the end of this
section.

Mass

Total mass of tank contents.