User Manual

3 INSTALLATION
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OPTIWAVE 7400-24 C
www.krohne.com 12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
• Drill 1 or more liquid circulation holes in the stilling well (if there is more than 1 liquid in the
tank).
i These holes help the liquid to move freely between the stilling well and the tank.
• Remove the burr from the hole.
Stilling wells: floating roofs
If the device must be installed on a tank with a floating roof, install it in a stilling well.
Stilling wells: horizontal cylindrical tanks
We recommend that you install the device in a stilling well if the device:
• is for a horizontal cylindrical tank,
• is in a metallic tank,
• measures a product with a high dielectric constant and
• is on the centerline of the tank.
Figure 3-13: Floating roofs
1 Sediment
2 Support fixtures
3 Stilling well
4 Floating roof
5 Product
6 Tank