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3. INSTALLATION
The device can be installed in several ways, depending on the design (vertical, horizontal, angle), with threaded connections, mounting plates, adapters, adjusting units,
etc. The unit must be protected against steady material influx by selecting the appropriate mounting position or using an overhead protective shield. When the device is
mounted onto the side of the tank, coning or arching of the material must be taken into consideration. The preferred location for the unit is the one with the least amount of
vibration. It is important that the device is installed so that the cable glands are in the correct position.
If the device is mounted onto the side of the tank, deposits may clog the connection point and block the movement of the paddle; therefore, they must be prevented.
If a 3-blade unit is on a mounting plate, the insertion hole must be at least
110 mm (4.3 inches) for the paddle to pass safely. Do not forget to use the mounting plate
seal! When mounted on a bracket or mounting plate, a 1" or 1½" flat nut can be ordered to fasten the unit. Mounting plates thinner than 9 mm (0.35 inches) requires
spacers. Attaching rod extensions longer than 0.5 m (20 inches) to the tank wall is recommended. For upper-level switching, using a standard model with the appropriate
paddle between the process connection and the measured medium standard is recommended, and if necessary, it must be equipped with a flexible coupling or a rod
extension to reach the required detection level. When using the unit for low fail-safe indication, it is necessary to install a deflector element. A cable-extended version
recommended for low-level switching, with a suitably-sized rigid tube, if necessary. A rigid tube is recommended if the measured medium forms a steep cone or the
surface is so rigid that the paddle cannot penetrate the material, and the level tends to deviate significantly from its vertical position. If so, it is recommended to use a rigid
tube for proper operation.
Besides, there are countless ways to use the device, but you should always be careful about choosing the right process connection and protection of the device.
Protection with a protective shield
Connection for mounting plate (recommended)
Side mounting
Mounting
Correct
Correct
Incorrect
Incorrect
In case of side-mounted units, the cable glands should face down!
4. MOUNTING
The paddle must be fixed to the device by inserting the two attached pins before
the installation. When using a mounting plate, it must be mounted first, followed
by the paddle. The cable of cable-extended units can be secured the same way
as the pins.
To customize the cable extension’s length, cut the cable starting from the lower
end. First, remove the grub screws from the lower cable holder. Then cut the
cable to the required length. It is recommended to wrap adhesive tape around
the wires of the cable when cutting to prevent them from fanning out. After
cutting the cable, the holder must be assembled with the probe. If a rigid tube is
attached to the unit, it must be cut for the appropriate length before re-
assembling!
Modifying the insertion length of an extended rod version is possible with the
optional sliding sleeve. It needs a 1½" BSP / NPT nozzle. The BSPT thread can
be screwed into a suitable BSP or an NPT threaded nozzle with a hex neck
(SW55 size wrench for 1½"), and the single-blade paddle can be passed through
the hole.