Systea S.p.A.

25 microns cut-off filtration cartridge with antifouling capability

The 25 microns cut-off inlet cylindrical filter cartridge (dimensions 30 mm x 100 mm) avoids the clogging of the sample inlet and protect the probe’s inlet tube and internal hydraulics from fouling.

It has to be mounted directly on the sample line and it has to be cleaned regularly at the time of maintenance service.

Autocleaning 25 microns cut-off filtration system with antifouling capability

The same 25 microns cut-off inlet cylindrical filter cartridge is provided coupled with a compressed air generator and sample line rinsing pump: this device produces compressed air at 1 bar to clean automatically the filter; a secondary peristaltic pump updates the outlet of the filter to the inlet of the probe.

This device has to be mounted outside water; the internal air compressor is protected by a water level sensor placed at the bottom of the device. The autocleaning and rinsing sequence is defined by a programmable internal timer.

In-situ 0.1 microns cut-off microfiltration unit with auto back-wash

This microfiltration device with auto-backwash capability is composed by the following components:

• 25 microns filter with antifouling capability;
• 0.1 microns cut-off filtration cartridge;
• PVC IP67 cylinder containing a 12 Vcc peristaltic pump and a three way selection valve, to update the water sample into the 0.1 microns cut-off filtration cartridge and to perform the periodic backwash;
• 250 ml storage bag, to store the filtered sample to be used for filter backwash after the measurement.

Variable depth sampling system with autocleaning 25 microns cut-off filtration system and antifouling capability

The WIZ variable depth sampling system can be used to allow the measurement of a water sample collected at various depths in a lake, lagoon or estuary, down to -50 m depth.

The system is composed by the following units:

• raw filter inlet and sample line: the incoming water sample is collected with a raw filter having a cut-off of about 1 mm; the 4 mm I.D. sampling Rilsan type tube can be provided up to 50 m length;
• submergible sampling pump unit: peristaltic pump, 250ml/min flow at 12 Vcc; this device can be submerged, max. down to -5 m depth;

• filtration chamber: it contains the 25 µm cut-off filter with autocleaning and biofouling protection: this unit can be opened from the bottom side to ensure a complete manual cleaning of the filter during routine maintenance activities; the internal volume of the filtration chamber is about 250 ml; this device can be submerged too;
• compressed air generator and sample line rinsing pump: this device produces compressed air at 1 bar to clean automatically the filter; a secondary peristaltic pump updates the outlet of the filter to the inlet of the probe. This device has to be mounted outside water; the internal air compressor is protected by a water level sensor placed at the bottom of the device. The autocleaning and rinsing sequence is defined by a programmable internal timer.

The WIZ variable depth sampling system can be used to allow the measurement of a water sample collected at various depths in a lake, lagoon or estuary, down to -50 m depth.