YSI EXO Turbidity Sensor
The YSI EXO turbidity sensor is a digital smart sensor featuring welded titanium construction and wet-mateable connectors.
Features
- 0 to 4000 FNU measurement range
- T63<2 sec response time
- 0.3 FNU or ±2% of reading accuracy from 0 to 999 FNU
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The EXO turbidity sensor is a digital smart sensor featuring welded titanium construction and wet-mateable connectors. For long-term, in situ continuous monitoring of turbidity, the EXO2 sonde has a wiper to clean the turbidity sensor to avoid sensor fouling and maintain accuracy.
Mechanics
Turbidity is the indirect measurement of the suspended solid concentration in water and is typically determined by shining a light beam into the sample solution and then measuring the light that is scattered off of the particles which are present. The suspended solid concentration is an important water quality factor and is a fundamental measure of environmental change. The source of the suspended solids varies in nature (examples include silt, clay, sand, algae and organic matter), but all particles will impact the light transmittance and result in a turbidity signal.
Customizable
The EXO Turbidity sensor employs a near-infrared light source and detects scattering at 90 degrees of the incident light beam. According to ASTM D7315 method, this type of turbidity sensor has been characterized as a nephelometric near-IR turbidimeter, non-ratiometric. This method calls for this sensor type to report values in formazin nephelometric units (FNU). FNU is the default calibration unit for the EXO sensor, but users are able to change calibration units to nephelometric turbidity units (NTU), raw sensor signal (RAW), or total suspended solids (TSS).
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