ProbeSuspended Solid digital sensor MES5 for ODEON



◼ Optical Technology without calibration
◼ Digital Technology (Modbus RS-485)
◼ No drift, Reduced maintenance
◼ Body in Stainless steel (316 L) or Titanium

Applications :
◼ Urban wastewater treatment
◼ Industrial effluent treatment
◼ Surface water monitoring,
◼ Sea water monitoring, fish farming, aquarium
◼ Drinking water

  • Description
  • Additional information


  • Technical Data
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Scope :
◼ Urban Waste water treatment (Inlet/ sewage water (SS, Turbidity), Aeration basin (SS), Outlet (Turbidity).
◼ Treatment of industrial effluents (Aeration basin (SS)), Clarifier (Sludge blanket), Outlet (Turbidity)
◼ Sludge treatment (Centrifugation)
◼ Dredging site (turbidity)
Optical technology :
The principle of measure is based on the mitigation of the Infra-Red signal in 870 nm through an optical path of 5mm. The sensor delivers measures in Suspended Solid (g/l), Turbidity (FAU) and Sludge Blanket detection in % of transmission IR. For a better precision, the optics of the sensor are regulated in temperature.
For a measure of Suspended Solid, the sensor is directly calibrated on the material to be measured (sample of sludge).
In Turbidimeter version the sensor delivers measures on a range 0-4000 FAU (Formazine Attenuation Unit) and is calibrated with solutions of Formazine.
Temperature: measures and regulation of optics via CTN.
Digital Communication / Integrated transmitter :
The sensor PONSEL connects to every type of recorder, transmitter, system of remote processing or automaton endowed with an entrance Modbus RS485. Thanks to the indexation of the sensor, more than 200 sensors can be connected on a recorder.
Resisting the disturbances: pre-development integrated into the sensor and the digital treatment of the signals.

All the data concerning the calibration, the history and the users are directly recorded in the digital sensor MES5.
A handle in DELRIN material assures the mechanical dress of the sensor and the sealing seals of the cable.
Compact, strong and light, the sensor allows a use in portable version or fixed post.

Technical data :

Suspended Solid measure
Principle of measure Optical IR (870 nm) based on IR absorption

Range of measure

SS : 0-50 g/L
Turbidity : 0-4000 FAU Sludge blanket : 0-100 %


SS : 0.01 g/L
Turbidity : 0.01 à 1 FAU Sludge blanket : 0.01 à 0.1 %


SS< 10 %
Turbidity : +/- 5% (range 200-4000 FAU) Sludge blanket : +/- 2%
Response time < 35 secondes
Temperature measure
Principle of measure NTC
Working temperature -5.00 °C to + 60,00°C
Resolution 0,01 °C
Accuracy +/- 0.5 °C
Storage Temperature -10°C to + 60°C
Degree of protection IP 68
Singal Interface Modbus RS-485 or SDI-12
Refreshment of the measure Maximum < 1 seconde
Power supply 5 to 28 volts


Standby : 25 µA (5 V)
Average RS485 (1 measure/seconde) : 4.5 mA (5V) Average SDI12 (1 measure/seconde) : 4.5 mA (5V) Curent Pulse : 100 mA during 30 mS
Heating times : 100 mS
Weight 750 g (sensor)
Material DELRIN, Nickel-plated brass, EPDM
Pressure max. 5 bars
Cable/ connexions 9 armoured connectors, polyurethane jacket, bare-wires or waterproof Fisher connector
Outline Drawing

Wiring diagram

Cable length up to 15m

Cable lenght 15 to 100 meters


Red Purple
Yellow             Power supply
Orange             V+ pink

  1. – Blue            SDI-12
  2. – Black           Power supply V-
  3. – Green  B ” RS-485 “
  4. – White    A ” RS-485 “
  5. – Green/yellow     Cable shield

1- Red

Power supply V+

2 – Blue


3 – Black

Power supply V-

4 – Green

B ” RS-485 “

5 – White

A ” RS-485 “

6 –

Cable shield

Additional information

Cable Length

3m, 7m, 15m