Product Overview

The AquaScat 2 HT is an on-line turbidity meter designed for water treatment applications. It utilises a unique non-contact free-fall measurement principle, where the water's turbidity is measured as it drops without touching the optical unit. This design prevents contamination of the optics, leading to extremely low maintenance. The device features an integrated control unit with a convenient colour touchscreen display for operation and visualisation of values and graphics.

Key Benefits

• Non-Contact Measurement: The optics do not contact the water, meaning they remain clean and are not contaminated, resulting in extremely low maintenance.
• Simple Verification: Calibration can be precisely verified using a non-toxic solids reference (secondary turbidity standard), saving time.
• High Precision: Provides precise results over the entire turbidity range.
• Integrated Display: Convenient operation via a colour touchscreen that displays values, graphics, status, and alarm messages.

Applications

The AquaScat 2 HT is suitable for a variety of water quality measurements, particularly in applications with higher turbidity values:

• Turbidity measurement in untreated water and for raw water control.
• Turbidity in the sedimentation stage.
• Turbidity before and after the filtration stage.
• Used across the drinking water, waste water, and process water industries.

Features & Construction

• Measuring Principle: 90 degree scattered light in accordance with the ISO 7027/EN27027 standard.
• Light Source: LED 870 nm.
• Calibration: Factory calibrated with formazin, with a factory-read solids reference available for recalibration during operation.
• Integrated Control: Features a 1/4 VGA, 3.5" touchscreen colour display.
• Data Memory: An internal data memory enables visualisation of measurement data over the last 32 days.
• Materials: Sample inlet/outlet connection material is Stainless steel 1.4435/PVC.

Technical Specifications

Specification	Value
Measuring Range	0 ... 4000 FNU
Resolution	0.1 FNU
Accuracy (0-10 FNU)	+/- 0.1 FNU, or +/- 1.5%
Accuracy (10-4000 FNU)	+/- 1.5%
Sample Flow Rate	Min. 1.3 L/min, unpressurised
Sample Temperature	0 ... +40 degrees C
Protection (Electronics)	IP66
Power Supply	18 ... 30 VDC
Outputs	2 x 0/4 ... 20 mA (galvanically isolated), 2 x relays 250 VAC, 4A

Installation & Maintenance

• The measuring windows remain clean and do not need to be cleaned, even with high turbidity.
• Minimal maintenance is achieved thanks to non-contact measurement.
• The sample inlet/outlet is a hose connection with an internal diameter of 12/25 mm.