Data Transfer
The data transfer and the power supply of the probes over longer cables (up to 6000 m) is carried out when using multi-conductor cables (at least 4-wire) via a serial interface (RS-485) or when using a “single-conductor cable” (steel cable with internal conductor) via the FSK- Interface (Freqency Shift Keying).
For shorter cable lengths (up to 500 m) the RS-232 interface can be used. It is also used to configure and readout the data memory.
If the probe is equipped with a USB interface, it is recommended to read the stored data via this interface, since a shorter read-out time can be achieved. The cable length of the USB interface should not be longer than 5 m.
The probes are provided with a program (SDA) for the configuration, readout of stored data, numerical and graphical representation of the data and storage of data for all probes in online or memory mode.
Calibration
We offer calibration of several probes and sensors
- Pressure (dead weight tester)
- Temperature: Millikelvin Thermometer Pt 100 (ITS 90, IEC 751)
- Conductivity: Salinometer, Guildline Autosal 8400B / Portasal 8410A (standard sea water)
- pH / Redox (buffer solutions)
- Oxygen