Sigma Pro & Mini Sigma Filters, Automatic Rinse 2" to 8"

Sigma Pro - Screen technology in akk-polymeric housing. Automatic self-cleaning filter, which combines
Amiad’s superior Suction-Scanning mechanism with a Multi-Screen design, and a new innovative hydraulic turbine. Automatic filtration and water treatment products. Water treatment and sea water filtration.

 
Sigma features:
• Based on Amiad’s proven suction-scanning screen technology
• Very Large Screen Area
• High flow rate per unit
• Made of polymeric materials; fully resistant to corrosion and most fertilizers (PH > 5)
• Short and efficient self-cleaning process
• Water treatment and filtration automatic solutions
• Very low energy consumption during flush
• Small footprint compared to other automatic filters
• Unique design, easy to maintain, few tools required
• Applications: Agriculture Irrigation open fields, landscape, green house, aquaculture
• Optional electronic controller AC or DC * Patent pending
• A good solution for Sea water filtration

Sigma automatic filtration video clip

Sigma Pro Filters Brochure 
Sigma Mini Filters Brochure 

ex Shipping kg
    Delivery time:30 days
Add to cart
2" 50mm > 25 m3/h [110 gpm]  4" Mini Sigma Automatic self-cleaning filter. Single screen filter

2" Automatic self-cleaning filter, electronically controlled.
Flange or Grooved connections.
Sigma Pro Amiad multi-screen technology.
Max. Flow rate: 25 M3/h [110 gpm]
Filtration degrees: 80 Micron [200 mesh] to 500 Mic [40 mesh]
Controlled and monitored by a hydraulic rinse control, or an electronic
battery /AC controller. Filter weight 16 Kg. [40 Lbs.]
Packaging size: 130x58x43cm [6.6"x2.1"x2.1"]

ex Shipping kg
    Delivery time:30 days
Add to cart
4" 100mm > 80 m3/h [350 gpm] 
Sigma Mini Automatic self-cleaning filter. Single screen filter

4" Automatic self-cleaning filter, electronically controlled.
Flange or Grooved connections.
Sigma Pro Amiad multi-screen technology.
Max. Flow rate: 120 M3/h to [528 gpm]
Filtration degrees: 80 Micron [200 mesh] to 500 Mic [40 mesh]
Controlled and monitored by a hydraulic rinse control, or an electronic
battery /AC controller. Filter weight 23 Kg. [51 Lbs.]
Packaging size: 172x57x53cm [68"x22.5"x21"]

ex Shipping kg
    Delivery time:21 days
Add to cart
> 120 m3/h [528 gpm]  4" Sigma Automatic self-cleaning filter

4" Automatic self-cleaning filter, electronically controlled.
Flange or Grooved connections.
Sigma Pro Amiad multi-screen technology.
Max. Flow rate: 120 M3/h to [528 gpm]
Filtration degrees: 80 Micron [200 mesh] to 500 Mic [40 mesh]
Controlled and monitored by a hydraulic rinse control, or an electronic
battery /AC controller. 

ex Shipping kg
    Delivery time:21 days
Add to cart
> 180 m3/h [790 gpm]  6" Sigma Pro Automatic self-cleaning filter

6" Automatic self-cleaning filter, electronically controlled.
Flange [Universal] Standard connections.
Sigma Pro Amiad multi-screen technology.
Max. Flow rate: 180 M3/h to [790 gpm]
Filtration Area 8,000 cm2 [1,240 in2]
Filtration degrees: 80 Micron [200 mesh] to 500 Mic [40 mesh]
Controlled and monitored by a hydraulic rinse control, or an electronic
battery /AC controller. 

ex Shipping kg
    Delivery time:21 days
Add to cart
> 280 m3/h [1233 gpm]  8" Sigma Pro Automatic self-cleaning filter

8" Automatic self-cleaning filter, electronically controlled.
Flange connections, selectable standard.
Sigma Pro Amiad multi-screen technology.
Max. Flow rate: 280 M3/h to [1233 gpm]
Filtration Area 8,000 cm2 [1,240 in2]
Filtration degrees: 80 Micron [200 mesh] to 500 Mic [40 mesh]
Controlled and monitored by a hydraulic rinse control, or an electronic
battery /AC controller. 

ex Shipping kg
    Delivery time:21 days
Add to cart
> 240 m3/h [1056 GPM]  4" Sigma Automatic self-cleaning filter

4" x 2 units on 8" manifold, Automatic self-cleaning filter, electronically controlled.
Flange or Grooved connections.

Sigma Amiad multi-screen technology.
Max. Flow rate: 240 M3/h to [1056 gpm]
Filtration grades range: 400 Mic [40 mesh] to 80 Micron [200 mesh]
12V DC, Electronic flushing controller is included in this package. 
Air freight delivery weight. 815 Kg.
Box size:160 x 130 x 235 cm 

ex Shipping kg
    Delivery time:21 days
Add to cart
> 360 m3/h [1584 GPM]  4" Sigma Automatic self-cleaning filter

4" x 2 units on 8" manifold, Automatic self-cleaning filter, electronically controlled.
Flange or Grooved connections.

Sigma Amiad multi-screen technology.
Max. Flow rate: 360 M3/h to [1584 GPM]
Filtration degrees: 80 Micron [200 mesh] to 500 Mic [40 mesh]
Controlled and monitored by a hydraulic rinse control, or an electronic
battery /AC controller.
Air freight delivery weight. 1070 Kg.
Box size: 210 x 130 x 235 cm

How the Sigma Filter Works

General
The Amiad “Sigma” filter is an automatic filter, with multiple screens operated by a single hydraulic turbine mechanism.
With a capacity up to 120 m
3/h (528 gpm) and from 80-300 micron filtration degree. Inlet/Outlet connections are
100 mm (4”) diameter, and exhaust valve is 50 mm (2”).

The Filtration
Raw water enters from the filter inlet and passes through the multi-screens. Clean water flows through the filter
outlet. The gradual dirt buildup on the inner screen surface causes a filter cake to develop, with a corresponding
increase in the pressure differential across the multi-screens. A pressure differential switch (hydraulic or electric)
senses the pressure differential and when it reaches a pre-set value, the self-cleaning process begins.

The Control System
The “Sigma” operation and cleaning cycle is controlled and monitored by a hydraulic rinse control, or an electronic
battery /AC controller.
During the self-cleaning cycle the rinse control operates the exhaust valve by means of an hydraulic command, and
when the cycle is complete, it automatically closes the exhaust valve and waits for the next cycle. In the case of the
electronic controller, the self-cleaning cycle is triggered by the DP switch, then the AC or DC controller switches the
solenoid to open or close the exhaust valve by means of a hydraulic command, when cycle is complete, the controller
will shut the exhaust valve and wait for another cleaning command.
The self-cleaning cycle begins under any one of the following conditions:

1. Receiving a signal from the Pressure Differential Device - which is preset at 0.5 bar.
2. Time interval parameter set at the controller (electronic controller only).
3. Manual Start, triggered by 3 way ball valve or via electronic controller keypad.

The electronic controller also provides:
Flush cycles counter
Alerts output – low battery, DP cycle