SEBA Hydrometrie

Pressure probe DS(T) 22

WaterLevel Measurement & Monitoring

The DS (T) 22 fulfills the the requirements of a modern pressure sensor. The pressure membrane is easy to clean and highly resistant. The capacitive measuring principle ensures a high accuracy (0.05%) and long-term stability (0.1% / year)

Quantity

Overview

Uncomplicated:
The DS (T) 22 can be connected to all standard data loggers and controllers (PLCs). Either analog (4-20 mA with extended ESD protection according to IEC 61000-4 part 5, 0-1 V) or digital output signals (SHWP, MODBUS, SDI-12) can be ordered.

Saltwater-resistant:
For special applications, e.g. in coastal areas, brackish water or landfills, the DS (T) 22 is also available in high-grade stainless steel 1.4539 form.

Last but not least:
In addition to the measurement of the water level, upon request, water temperature can also be recorded with a high degree of accuracy: 0.1° C.

Specification

Water Level

Sensor	Relative pressure sensor
Measurement Principle	Capacitive with ceramic measuring cell
Measuring Range	0-2/0-4/0-5/0-10/0-20/0-30/0-40/0-50/0-70/0-100/0-200/0-250/0-300m water column
Measuring Accuracy	Digital: ± 0.05% FS Analog: ± 0.1% FS
Long Term Stability	±0.1 %/year

Water Temperature (Optional)

Sensor	PT1000 sensor
Measurement Principle	Resistiv
Measuring Range	Digital: -5 °C - +50 °C Analog: -5°C - +60°C
Measuring Accuracy	0.1 °C

Housing

Material	V4A standard 1.4404 stainless steel ,or high grade 1.4539 stainless steel (optional)
Dimensions	Ø22mm x 182mm
Protection Class	Probe: IP68

Outputs

Digital	RS485: SHWP, Modbus, SDI-12
Analogue	0-1V, 4-20mA with extended ESD protection according to IEC 61000-4 part 5

Others

Power Supply	7-30VDC
Connection	Either with plug or open cable ends
Operating Temperature	-5 °C - +60 °C (non-freezing)
Cable	Reinforced measuring cable with a pressure compensation line