User Manual

8 TECHNICAL DATA
88
OPTIWAVE 7400-24 C
www.krohne.com 12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
8.2 Technical data
INFORMATION!
• The following data is provided for general applications. If you require data that is more
relevant to your specific application, please contact us or your local sales office.
• Additional information (certificates, special tools, software,...) and complete product
documentation can be downloaded free of charge from the website (Downloadcenter).
Measuring system
Measuring principle 2-wire loop-powered level transmitter; K-band (24...26 GHz) FMCW radar
Application range Level measurement of liquids, pastes and slurries
Primary measured value Distance and reflection
Secondary measured value Level, volume, mass and flow rate
Design
Construction The measurement system consists of a measuring sensor (antenna) and a signal
converter
Options Integrated LCD display (-20..+60°C/ -4…+140°F); if the ambient temperature is not
in these limits, the display switches off automatically
Straight antenna extensions (length 105 mm / 4.1¨)
Max. extension length, Drop antenna: 525 mm / 20.7¨;
Not available for the Hygienic antenna
Antenna purging system (supplied with a ¼ NPTF connection)
PTFE/PP flange plate protection (for Drop antennas without antenna extensions
only)
Distance piece (for process temperature: +150...+200°C / +302...+392°F) 1
Signal cable for remote housing version (refer to cable properties in "Electrical
connection: Remote device version")
Weather protection
Max. measuring range 80 m / 260 ft
Also depends on the dielectric constant of the product and the installation type.
Refer also to "Antenna selection".
Min. tank height 0.2 m / 8¨ (1 m / 40¨ for hygienic antenna)
Top dead zone Antenna extension length + antenna length + 0.1 m / 4¨ (500 mm / 20¨ for hygienic
antenna)
Beam angle Metallic Horn (machined) DN 40 (1.5¨): 20°
Metallic Horn (machined) DN 50 (2¨): 15°
Metallic Horn (sheet metal) DN 65 (2.5¨): not appicable. This antenna option is for
the BM 26 W.
Metallic Horn (sheet metal) DN 80 (3¨): 10°
Metallic Horn (sheet metal) DN 100 (4¨): 8°
Metallic Horn DN150 / 6¨: 6°
Metallic Horn DN200 / 8¨: 4°
Drop DN80 / 3¨: 8°
Drop DN150 / 6¨: 4°
Hygienic DN50 / 2¨: 15°
Display and user interface
Display and user interfaceDisplay and user interface
Display and user interface