KROHNE OPTIFLEX 2200 C_F EN - Manual (Page 161)

APPENDIX
10
161
OPTIFLEX 2200 C/F
www.krohne.com 07/2013 - 4000668002 - HB OPTIFLEX 2200 R02 en
10.4 Glossary
C
D
E
H
L
Cable Cable Cable Cable This is a wire rope. It is used as a measurement pulse guide.
Dielectric constant Dielectric constant Dielectric constant Dielectric constant An electrical property of the product to be measured used in TDR
measurement. Also known as εr, DK and relative permittivity. This gives the
strength of the measurement pulse reflected back to the device's signal
converter.
Direct mode Direct mode Direct mode Direct mode The device sends a signal along the probe. It receives the reflection of the
signal from the surface of the tank contents. The device uses an algorithm
to convert the time it takes to receive the signal into a distance. Use of this
measurement mode depends on the minimum dielectric constant limit of
the probe type. For more data, refer to
Technical data on page 116. Refer
also to TBF mode TBF mode TBF mode TBF mode.
Discontinuities Discontinuities Discontinuities Discontinuities These are objects or parts of objects (including the tank) that are in the
tank, are possibly in the probe's empty space and can potentially influence
the electromagnetic field around the probe. This can cause a measurement
error. Also refer to
General requirements on page 22.
Distance Distance Distance Distance This is a display option. It is the distance from the face of flange to the level
(1 product) or the surface of the top product (2 or more products). Refer to
the diagrams at the end of this section.
Electromagnetic compatibility Electromagnetic compatibility 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 and EN 61326-2-3 for further details.
Electromagnetic field Electromagnetic field Electromagnetic field Electromagnetic field This is a physical field that is produced by electrically-charged objects and
which may affect the behaviour of other objects near to the field.
Empty space Empty space Empty space Empty space A minimum diameter around a probe that should have no objects in it for
the device to work correctly. This depends on the probe type. Refer to
Installation
Installation Installation Installation for more details.
Hazardous area Hazardous area Hazardous area 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, cFMus,
NEPSI etc.) related to site specifications. You can find more data about
hazardous areas in the Ex Manuals and Ex Certificates of Compliance.
Level Level Level Level This is a display option. It is the height from the bottom of the tank (user-
defined) to the surface of the top product (Tank height – distance). Refer to
the diagrams at the end of this section.