NIR scattered light
Turbidity is measured using near-infrared light scattered at 90°, according to the nephelometric principle, with automatic temperature compensation. The range can be set to 0/40, 0/400 or 0/4,000 NTU.
Measuring probes
ETORB2 turbidity
Turbidity probe using NIR light scattered at 90° and the nephelometric principle, for drinking water, swimming pool water and process water. Scratch-resistant sapphire glass optical window and water-jet self-cleaning ensure accurate measurements over time.
- Range 0/40 – 0/400 – 0/4,000 NTU
- Water-jet self-cleaning
- Sapphire glass window
- Temperature compensation
4,000NTUMaximum range
± 5%Measurement error
2barOperating pressure
0 – 40°COperating temperature
Operation
Measuring principle and self-cleaning
Self-cleaning
A water jet (maximum 1 bar), controlled by the controller according to the set programme, cleans the optical measuring window.
Technical data
Data sheet
| ETORB2 | |
|---|---|
| Measuring range | 0/40 NTU – 0/400 NTU – 0/4,000 NTU |
| Measurement error | ± 5% of reading |
| Measuring system | NIR scattered light at 90°, nephelometric principle |
| Body | PVC |
| Optical window | Sapphire glass |
| Automatic compensation | Temperature |
| Self-cleaning | Yes (water jet, max 1 bar) |
| Operating temperature | 0 – 40 °C |
| Operating pressure | 2 bar |
Installation
Installation
The probe is installed in one of the Giemme probe holders:
In by-pass
In a flow-through probe holder, installed in by-pass on the pipe.
Probe holders →Immersion
In an immersion probe holder, directly in the tank or basin.
Probe holders →Technical advice
Tell us about your application: our technical staff will recommend the most suitable model, configuration and accessories.