User Manual

INSTALLATION

OPTIWAVE 7400-24 C

www.krohne.com 12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr

• Make sure the flange on the nozzle is level.

• Make sure that you use the applicable gasket for the flange dimensions and the process.

• Align the gasket correctly on the flange facing of the nozzle.

• Lower the antenna carefully into the tank.

• Make sure that you point the device in the correct direction. Refer to "Point the device in the

correct direction" in this section.

• Tighten the flange bolts.

i Refer to local rules and regulations for the correct torque to apply to the bolts.

Equipment needed:

• Device

• Gasket for G 1½ connection (not supplied)

• Thread seal tape (PTFE) for 1½ NPT connection (not supplied)

• 50 mm / 2¨ wrench (not supplied)

• Make sure the tank connection is level.

• ISO 228-1 (G) connection:

ISO 228-1 (G) connection:ISO 228-1 (G) connection:

ISO 228-1 (G) connection: Make sure that you use the applicable gasket for the connection

dimensions and the process.

• ISO 228-1 (G) connection:

ISO 228-1 (G) connection:ISO 228-1 (G) connection:

ISO 228-1 (G) connection: Align the gasket correctly.

• NPT connection:

NPT connection:NPT connection:

NPT connection: Wind the thread seal tape around the process connection in agreement with

good engineering practice.

• Lower the antenna carefully into the tank.

• Turn the threaded connection on the antenna to attach the device to the process connection.

• Make sure that you point the device in the correct direction. Refer to "Point the device in the

correct direction" in this section.

• Tighten the connection to the correct torque (not more than 40 Nm).

Requirements for threaded connections

Figure 3-11: Threaded connection

WARNING!

Do not tighten the connection to a torque more than 40 Nm. If the connection is too tight, this will

damage the thread.

To prevent damage to the antenna, make sure that the minimum diameter of the hole for a

NPT thread connection is not less than 43.4 mm / 1.71