User Manual

INSTALLATION 3
29
OPTIWAVE 7400-24 C
www.krohne.com12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
3.7.3 Devices with Metallic Horn antenna
The antenna must project out of the nozzle. If necessary, use an antenna extension. But if the
tank roof is flat and the tank fitting is symmetrical, it is not necessary for the antenna to project
out of the nozzle. Thus, the device can have a larger measuring range.
3.7.4 Process connections
Equipment needed:
• Device
• Flange gasket (not supplied)
• Wrench (not supplied)
CAUTION!
Do not put the device near to the product inlet. If the product that enters the tank touches the
antenna, the device will measure incorrectly. If the product fills the tank directly below the
antenna, the device will also measure incorrectly.
Figure 3-9: Product inlets
1 The device is in the correct position.
2 The device is too near to the product inlet.
Requirements for flange connections
Figure 3-10: Flange connection