Turbidity is a general indicator of the optical clarity of water,and is defined as the amount of light scattered from particles in solution. In practice, a light beam is directed into a water sample and a photo detector measures the light scattered at 90 degrees to the incident light beam. While other scatter angles are possible, the 90-degree measurement angle has become the standard for turbidity measurement in most water systems. It is used as a relative indicator of the amount of suspended solids in solution, and is measured in virtually all drinking water systems. It is also used in industrial...

Turbidity Monitor > The monitor provides display of turbidity over a variety ofoperating ranges. The minimum display range of 0-4 NTU provides resolution down to 0.001 NTU and is suitable for almost any final filter monitoring application. Ranges of 0- 40 or 0-400 NTU are available for raw water or clarifier efflu- ent monitoring. A 0-4000 NTU range may be used for very high turbidity applications such as river water monitoring. In addition, the monitor may be calibrated for suspended solids measurements, with ranges from 0-10 mg/l up to 0- 10,000 mg/l. Standard turbidity systems provide a variety...

Range:4/400 NTU (0-4.000, 0-40.00, 0-400.0)40/4000 NTU (0-40.00, 0-400.0, 0-4000) 9/999 mg/l (or PPM) SiO2 (0-9.999, 0- 99.99, 0-999.9) 99/9999 mg/l (or PPM) SiO2 (0-99.99, 0- 999.9, 0-9999) Auto-ranging over 3 decades of con- centrationAccuracy:5% of reading or ѱ0.02 NTU,whichever is greater, on 40/400 scale 10% of reading or ѱ2 NTU, whichever is greater, on 400/4000 scaleLinearity:0.1% of F.S. Display:16 character alphanumeric backlit LCD Control Relays: Two SPDT relays, 5A @ 220 VAC resis-tive. Programmable deadband and time delay.Control Mode:On/Off Alarm Relay:Independent SPDT relay, 5A...