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Two versions of this product are available from this page: The EZ SDI-1 and the EZ SDI-1-Analog which has the optional Four 4-20 mA output.
THIS IS A LOW VOLUME SELLER, contact_us FOR A CUSTOM QUOTATION.
The RODI Systems EZ SDI™ automatically and consistently monitors the silt density index of RO feed water. Operators can quickly and regularly check the effectiveness of the RO pretreatment system without bothering with labor-intensive manual tests.
The EZ SDI™ is microprocessor controlled and fully automatic. The monitor is housed in a NEMA 4X enclosure and is designed for permanent installation in industrial environments. The filter holder allows the use of standard 25mm test filters available from a number of suppliers. Replacing the media is a two-minute process and the test is initiated with the press of a button.
The EZ SDI™ uses the same testing method as specified in ASTM D 4189-07. This standard method indicates the quantity of particulate matter in water and is applicable to relatively low (less than 1.0 NTU) turbidity waters such as well water, filtered water, or clarified effluent samples. Since the size, shape, and nature of particulates may vary, this test method is not an absolute measurement of the quantity of particulate in a particular water source. Maximum SDI values of RO feed water are commonly specified by RO membrane manufacturers, and demonstrating adherence to these SDI specifications may be necessary to receive guaranteed performance from the membrane supplier.
Continuous Sample Flow - The EZ SDI™ is designed for permanent installation. In order to prevent stagnant conditions in the sample line, the monitor continuously allows a side stream of sample to flow through the monitor up to the point where the sample enters the filter. A specially designed orifice controls the rate of this side-stream flow. The orientation of the flow control orifice also allows air in the sample line to be separated from the sample before the sample enters the filter holder.
Discrete Outputs One Normally-Open Form A, 2 Amp, 30 VDC/240 VAC
Analog Outputs Four 4-20 mA (optional)
Serial Ports One RS-232 (RJ Connector) for data download
User Interface 4 x 20 LCD with backlight; 4 Keys, Tactile
Realtime Clock Backed with Lithium Battery, 10 Year Life
Power 120-240 VAC,50-60 Hz, 0.8 A
Enclosure NEMA 4X enclosure
Mounting Wall Mounting
Dimensions EZ SDI™:11" high x 15" wide x 9" deep; EZ SDI-4™:11" high x 22.5" wide x 9" deep
Electrical All connections via removable screw terminals.
Environment 0 to 50 C (32 to 122 F), 10 to 90% relative humidity, non-condensing
Certification Complies with ASTM D4189-07.
Repait Parts Avaialble via Custom Order. CLICK HERE TO CONTACT US
|Item||Quantity in Package||Part Number|
Replacement filter disks for EZSDI 1 or 4. 25mm
disposable filter, 45 micron (package of 100)
2 year spare parts kit for EZ SDI-1C and EZ-SDI-4.
Includes one of PN 112, one of PN 258, two of PN
439, one of PN 465, one of PN 498, one of PN 507
and one of PN 902. This kit is put together for the
purpose of replacing parts after two years of use.
EZ-SDI Sample Sequencer for EZSDI-4 only
(specify USA – 120 volt or INT- 240 volt)
|1||EZSDI-SS-INT or USA|
Booster Pump in enclosure for EZ SDI, 230VAC or
115VAC, make a choice of one (USA or INT)
|Water Vent Tubing Flow Orifice||1||112|
|Pressure Transmitter (pressure sensor)||1||126|
|1/4" OD Vent Tubing 250 psi||100 Feet||133|
|Air and Water Vent Tubing Bulkhead Connector||1||134|
|Drain Tube Hose Barb||1||256|
|1/4" ID Drain Tubing||5 Feet||257|
|1/4" Fuse 2 Amp, 250 V||1||439|
|Optical Level Switch||1||465|
|¼’ male connector SS||1||481|
Replacement filter disks for EZSDI-1C,
pkg. of 100. 25mm disposable filter,.45 micron (package of 100)
|Cartridge Filter Fitting (for EZ SDI-1-C & EZ SDI -4)||1||498|
|Cartridge Filter Adapter (for EZ SDI-1-C & EZ SDI -4)||1||507|
|Volumetric Container Cover||1||525|
|Vent Solenoid Valve with Teflon Plunger (for EZ SDI-4)||1||536|
|Drain Solenoid Valve with Teflon Plunger||1||902|
|Manifold Solenoid Valve with Teflon Plunger||1||903|
Prices for the Continental 48 states of the USA only.