Sensors
OEM conductivity sensor
The OEM conductivity sensor is designed as a sensor element for integration into custom underwater measurement systems. The conductivity cell is based on a 7-pole platinum electrode arrangement in cylindrical geometry.
A central platinum electrode is used to feed a measurement signal into the surrounding medium. Two symmetrically arranged electrode pairs detect the resulting voltage drop. The outer electrodes limit the electric field to the cell interior, thereby minimizing external influences.
The platinum conductivity cell features a linear characteristic over the entire operating range and is suitable for continuous measurements and long-term applications.
The sensor is supplied without integrated electronics and is intended for direct further processing by the user. Electrical connection, signal processing, and calibration are carried out by the customer and must be designed according to the respective application.
Technical data
| Parameter | Spezifikation |
|---|---|
| Sensortyp | 7-polige Quarzglaszelle |
| Messbereich | Abhängig von der vom Kunden vorgenommenen Kalibrierung: z.B. 0…60 mS/cm |
| Gesamtabmessungen des Sensors | 90 × 31 × 16 mm |
| Abmessungen der Quarzglaszelle | Innenlänge: 45 mm · Innendurchmesser: 8 mm |
| Genauigkeit (neuer Sensor) | 0,002 mS/cm (abhängig von Kalibrierung und Elektronik) |
| Langfristige Stabilität | 0,002 mS/cm pro Monat (kann bei Proben mit starker biologischer Verschmutzung, Abwasser oder kontaminierten Medien variieren) |
| Zeitkonstante | > 100 ms (abhängig von der Abtastrate im Sensor und in der Elektronik) |
| Gewicht (Luft) | ca. 40 g |
| Baustoffe | Titan, Epoxidharz |
| Druckstabilität | 600 bar |
| Temperaturbereich | -2…+38 °C |
| Flansch-O-Ringe | 10 × 1.5 mm (NBR70) |
Application areas
Integration into customer-specific probe systems
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