Turbidity Sensor


Tethys turbidity sensor is based on nephelometric method (ISO 7027 – EN 27027). A light beam from a laser diode is sent to the sample through an optical lens. The 90 degree scattered light by suspended particles is collected by a photo detector and converted to an electric signal proportional to the turbidity of the sample.
The sensor uses a 650 nm red laser light or on request a 860 nm infrared laser light so that the measuring is not affected by the color of the sample (ISO7027). It is suitable for measurement of turbidity in drinking water and aquaculture as well as for the outlet of municipal or industrial water treatment plants.
A integrated bubble trap avoid the effect of bubbles on the measurement.
The sensor can be easily opened for calibration on a formazine solution. A valve at the bottom allows to empty the cylinder during calibration operations or for a manual cleaning.
The turbidity sensor must be connected to the EL200 controller for display, calibration and measurement transmission though RS232/RS485 under Modbus protocol or by analog 4-20 mA output.

SPECIFICATIONS


Measurement method Nephelometric
Measurement range 0 - 100 NTU (other ranges on request)
Detection limit 0.015 NTU
Repeatability +/- 0.01 NTU
Accuracy +/- 2% or +/- 0.015 NTU whichever is greater up to 20 NTU, +/- 5% above 20 NTU
Detector 90ᵒ scattered light detector
Light source visible laser diode (or infrared laser diode on request), lifetime > 5 years
Bubble Trap integrated
Capacity 250 ml
Inlet/outlet fittings for 9.6 mm external diameter plastic tubing
Ambient temperature range -5 to 60 ᵒC
Working pressure 6 Bar maximum at 25 ᵒC
Body material POM
Wet material POM, PP, FKM, quartz
Sensor cable Length 3 meters (to EL200 controller)
Associated controller EL200 (to order separately)
Mounting on wall by 4 screws
Sensor warranty 1 Year

Reference Part


TURB200 Nephelometric turbidity sensor low range
Range: 0 – 100 NTU
3 meters of cable
Tethys turbidity sensor is based on nephelometric method (ISO 7027 – EN 27027). A light beam from a laser diode is sent to the sample through an optical lens. The 90 degree scattered light by suspended particles is collected by a photo detector and converted to an electric signal proportional to the turbidity of the sample.
The sensor uses a 650 nm red laser light or on request a 860 nm infrared laser light so that the measuring is not affected by the color of the sample (ISO7027). It is suitable for measurement of turbidity in drinking water and aquaculture as well as for the outlet of municipal or industrial water treatment plants.
A integrated bubble trap avoid the effect of bubbles on the measurement.
The sensor can be easily opened for calibration on a formazine solution. A valve at the bottom allows to empty the cylinder during calibration operations or for a manual cleaning.
The turbidity sensor must be connected to the EL200 controller for display, calibration and measurement transmission though RS232/RS485 under Modbus protocol or by analog 4-20 mA output.

Download Turbidity Sensor


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Turbidity Sensor PDF English 498 KB
Brochure For All Probes PDF English 4510 KB