Appendix, 4 glossary – KROHNE OPTIWAVE 6300C EN User Manual

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APPENDIX

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OPTIWAVE 6300 C

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03/2014 - 4000547004 - HB OPTIWAVE 6300 R04 en

10.4 Glossary

Dead zone

Non-measurement zone below the process connection.

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.

Direct Plus

Direct Plus mode is an alternative measurement mode. If it is possible
there will be an interference signal in the measurement zone that is larger
than the level signal, select "Direct Plus" mode. If you select "Direct Plus"
mode, the device locks on the level signal and monitors changes in level. If
the device then finds larger reflections in the silo, it will only monitor the
largest signal in a small search zone around the first reflection found and
ignore all other reflections. The interference signal must not be near to the
level signal.

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.

Drop antenna

A new generation of antenna made of PP or PTFE. It has an ellipsoidal
shape for a more precise emission of radar signals.

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.