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 | Specification |
|---|---|
| Sensor Type | 7-pin Quartz Glass Cell |
| Measurement Range | Depending on customer calibration: e.g. 0…60 mS/cm |
| Overall Sensor Dimensions | 90 × 31 × 16 mm |
| Quartz Glass Cell Dimensions | Internal Length: 45 mm; Internal Diameter: 8 mm |
| Accuracy (New Sensor) | 0.002 mS/cm (depending on calibration and electronics) |
| Long-Term Stability | 0.002 mS/cm per month (may vary for samples with heavy biological contamination, wastewater, or contaminated media) |
| Time Constant | > 100 ms (depending on the sampling rate in the sensor and electronics) |
| Weight (in Air) | Approx. 40 g |
| Materials | Titanium, Epoxy Resin |
| Pressure Resistance | 600 bar |
| Temperature Range | -2…+38 °C |
| Flange O-Rings | 10 × 1.5 mm (NBR70) |
Application areas
Integration into customer-specific probe systems
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