NIVELCO NIVOROTA EL-EK-7 Series User Manual Download Page 4

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Pipe extension Ø10x1 

EAR–70

–1

 

Rigid pipe for cable extended version 

EAK–7



–1

 

3- blade extended paddle (268 mm, 10.5 inches) 

EAL–708–1 

Mounting plate 

EAM–70

–0 

 

 

The extension can only be used with a 

standard model. 

 

It is crucial it the paddle of pipe-extended 

models is not exposed to strong lateral forces, 

for they may damage the pipe! 

 

If the required “L” length is different than the 

one in the order code, it must be specified. 

 

 

By pulling it over the cable rope, it makes 

units with cable rope extension stiffer. 

 

Caution! If the cable rope is shortened, the 

tube must be cut to a matching length. 

 

The length of the exposed cable rope section 

must be at least 30 mm (1.2 inches). 

 

 

Use a mounting plate to insert paddle into the 

tank! 

 

 

Primarily for light materials due to its large blade.

 

 

Extended variant.

 

 

Paddle pressure*: 0,3 kPa (0.044 psi)

 

 

 

Stainless steel and carbon steel variant 

available. The latter is electrostatic powder-

coated to prevent rusting.

 

 

Sliding sleeve for rod extended version 

EAM–703–0

 

Flexible Coupling 

EAS–701–0

 

 

 

Only for the E

R–7



 variant, for changing 

the insertion length. 

 

 

To protect the paddle from strong dynamical 

effects that may occur during operation. 

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. It must be installed vertically. It will not work correctly if it is slanted or horizontal. 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 

 

 

Correct 

 

 

Incorrect 

 

 

Mounting 

 

Correct 

 

Incorrect

 

 

In case of side-mounted units, the cable glands should face 
down! 

 

The paddle pressure value is understood for 0.2 Nm (0.148 ft-lb) torque in the case of complete 

immersion. The specified values are for comparing the paddles. Paddles with lower paddle pressure are 

for lighter materials, while paddles with higher paddle pressure are recommended for heavier materials. 

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