WQA-320T Portable Turbidity Analyzer Sapphire Optical Window 0.01 NTU Resolution Chlorine Mode

WQA-320T Portable Turbidity and Residual Chlorine Analyzer

The WQA-320T is a portable analyzer for turbidity and residual chlorine checks at treatment plants, distribution points and industrial sites. The upgrade addresses three field problems that shorten the life of portable turbidimeters: scratched optical windows, unstable low-range readings, and housings that corrode in chlorinated splash zones.

Higher Accuracy Than Previous Generation

• Turbidity accuracy of plus or minus 2% of reading plus 0.01 NTU, with resolution of 0.01 NTU below 10 NTU for low-level drinking water checks.
• Stable readings at the 0.1 NTU level through an 860 nm infrared source that reduces colour interference compared with tungsten lamps.
• Residual chlorine accuracy of plus or minus 0.02 mg/L using DPD method with matched vials, so free chlorine trend reporting stays consistent.
• Four-point calibration with formazin or polymer standards, with the calibration date and standard values stored for traceability.

Improved Instrument Performance

• Measurement in about 5 seconds per sample, with autoranging so the operator does not need to select a range before reading.
• 1000 reading memory with time stamp for later reporting, avoiding handwritten field records.
• 860 nm LED light source rated for 100,000 hours, removing lamp replacement and warm-up time.
• Battery life of about 40 hours on four AA cells, with a low-battery warning well before shutdown.
• Backlit display readable in direct sunlight, with clear prompts for vial positioning and blank measurement.

Upgraded Materials and Construction

• Sapphire optical window replaces the glass window used in earlier models: it resists scratching from abrasive samples and cleaning cloths, which is the most common cause of turbidity drift.
• Anodised aluminium body resists corrosion and provides rigidity so the optical alignment stays fixed after transport.
• Stainless steel sample chamber with a silicone vial sleeve prevents vial wobble and stray light.
• IP65 protection keeps dust and spray out of the optics compartment during plant walk-throughs.

Technical Specifications

Typical Applications

• Drinking water treatment plant filtered water checks
• Distribution network turbidity and chlorine spot testing
• Wastewater effluent compliance sampling
• Swimming pool and leisure water quality control
• Food and beverage process water verification

Standard Kit

The kit includes the analyzer, four matched sample vials, calibration standards, cleaning cloth and syringe, batteries and a hard carry case. Chlorine reagent packs and additional vials are available as consumables.

Ordering and Support

Standard configuration includes the analyzer main unit, sensor set, calibration solutions, USB cable and operation manual. Custom probe lengths, extra parameters, local language interfaces and OEM branding are available on request. Our technical team supports method setup, calibration training and after-sales spare parts supply.

Contact our sales team for a quotation, datasheet or sample evaluation unit.