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Simple SDI Water Testing Equipment – Portable Silt Density Index Analyzer

Fiyat Sorunuz

Portable battery-powered SDI-5/10/15 tester with real-time flow measurement, microprocessor precision, and seawater compatibility for field and laboratory water quality analysis.

Microprocessor-driven accuracy exceeding manual testing by orders of magnitude with superior repeatability
Battery-powered portability: 13 hours of continuous testing between charges
Multi-protocol testing: SDI-5, SDI-10, SDI-15 on 100mL and 500mL sample volumes for comprehensive fouling assessment
ASTM D4189-07 standards-compliant 47mm membrane filters for cost-effective, globally standardized testing
Seawater compatible: Iron-free wetted surfaces suitable for saline and corrosive water matrices
Real-time flow rate display (mL/min) with data logging for Modified Fouling Index (MFI) trend analysis
Linear, high-resolution pressure regulation with set-and-forget operation for consistent results across varying SDI levels
Modular field-serviceable design with on-site sensor calibration capability
Rugged, durable construction with carefully selected components for years of reliable operation
Audio alert notifications for operator error detection during test progression
High-contrast LCD display with guided test procedure prompts and real-time data visualization

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Daha fazla detay

Professional-grade silt density index (SDI) testing instrument designed for accurate water quality assessment in desalination, water treatment, and industrial applications. Features microprocessor-controlled precision, continuous flow monitoring, and compliance with ASTM D4189-07 standards. Performs SDI-5, SDI-10, and SDI-15 tests on both 100mL and 500mL sample volumes. Battery-operated with 13-hour runtime between charges, suitable for field deployment and portable laboratory use.

Technical Specifications

Operating Pressure Range	35 psi (2.4 bar) minimum, 100 psi (6.9 bar) maximum
Minimum Flow Rate	1.4 L/min at 35 psi at test initiation
Water Source Requirements	No large suspended solids; minimum 50-micron prefiltration (includes cleanable 50-micron filter kit)
Booster Pump Accessory	Available kit for low-pressure water sources
SDI Test Protocols	SDI-5, SDI-10, SDI-15 (100mL and 500mL sample volumes)
Flow Measurement Display	Continuous real-time readout in mL/min
Membrane Filter Polymer	Mixed Cellulose Ester (nitrocellulose)
Membrane Filter Form	47mm diameter disk
Pore Size	0.45 micron
Membrane Surface	Flat white
Membrane Thickness	145 microns
Standards Compliance	ASTM D4189-07 fully compliant; manufacturing exceeds standard criteria
RoHS Compliance	Compliant with applicable exemptions
CE Compliance	EN 61000-6-3:2007 (Emissions); EN 61000-6-1:2007 (Immunity)

Applications

Reverse osmosis (RO) feed water quality verification in desalination plants
Pretreatment system monitoring in industrial water treatment facilities
Membrane system inlet water assessment for nanofiltration (NF) and ultrafiltration (UF) processes
Seawater intake water quality characterization for coastal desalination operations
Field water sampling and analysis for water quality compliance testing
Groundwater and surface water assessment before treatment processes
Portable laboratory testing in remote locations or decentralized water systems
Real-time fouling trend analysis during membrane system operation

Frequently Asked Questions

What is the difference between SDI-5, SDI-10, and SDI-15 testing?

These tests measure silt density index over different time intervals (5, 10, and 15 minutes respectively) using the same 0.45-micron membrane filter. SDI-5 provides the fastest assessment, SDI-10 offers standard protocols, and SDI-15 provides extended fouling trend analysis. This device performs all three on both 100mL and 500mL sample volumes for comprehensive water characterization.

Can this equipment test seawater samples?

Yes. The unit features iron-free wetted surfaces (non-metallic water contact components) that are specifically compatible with seawater, brine, and other corrosive saline matrices without material degradation.

How long does the battery last between charges?

The battery provides approximately 13 hours of continuous testing operation between full charges, enabling extended field deployment and multiple sample batches without recharging.

Are replacement membrane filters readily available?

Yes. The device uses industry-standard 47mm diameter mixed cellulose ester membranes (0.45 micron pore size) that comply with ASTM D4189-07. These filters are globally available and cost-effective. The kit includes 100 replacement membranes.

What happens if my water source has low pressure?

A booster pump accessory kit is available for water sources with insufficient inlet pressure (below 35 psi minimum operating requirement). This allows deployment in gravity-fed or low-pressure applications.

Can sensor calibration be performed in the field?

Yes. The modular design enables on-site sensor calibration without factory return. Routine maintenance and calibration procedures can be performed by trained operators using standard field equipment.

What data can be extracted from the flow rate readings?

The continuous mL/min display provides real-time flow data that can be manually plotted to generate Modified Fouling Index (MFI) curves, enabling detailed fouling kinetics analysis and membrane performance prediction.