Liquid | Water Level Sensor | Probe | Ø17mm | 200m | 4-20mA | 11-28VDC | Stainless Steel | RS485 / HART | IP68

Technical Specifications

Measurement principle: Diffused silicon (piezoresistive pressure sensor)
Measuring ranges: 0–10 / 20 / 50 / 200 mH₂O
Diameter: Ø17 mm
Accuracy: ≤ ±0.5 % FS
Overload: ≤ 2× FS
Output signal: 4–20 mA DC (2-wire)
Communication: RS485 or HART protocol
Power supply: 11–28 V DC
Operating temperature: −10 °C … +70 °C
Storage temperature: −20 °C … +85 °C
Protection class: IP68
Safety marking: Ex ia IIB T6 Ga (intrinsically safe)
Long-term stability:
• 20 mH₂O: ±0.2 % FS / year
• ≤20 mH₂O: 20 mmH₂O / year
Diaphragm: Isolated, SS316L / Tantalum
Housing: SS304 / SS316L
Cable: PE / PUR / PVC
Weight: ≤ 110 g
Certificates: CE, RoHS, CCS (approved for marine use)

Functions and Technologies

Digital temperature compensation – stable data even with temperature fluctuations
Nonlinear error correction – higher accuracy across the entire range
Fully sealed design – long service life in continuous submersion
Vented hermetic cable – protection against atmospheric pressure influence
Network-ready – easy integration into SCADA, PLC, BMS systems
No external adjustment required

Applications

For household users: Monitoring water levels in deep wells and boreholes. Pump automation. Dry-run protection.
For electricians / system integrators: Fast installation using standard 4–20 mA signal. Reliable operation without calibration. Compatible with most controllers and PLCs.
For engineers / designers: Suitable for water management, drainage, and hydrology projects. Supports RS485 or HART communication. Certified for use in explosive areas.
For industry: Energy, metallurgy, pharmaceuticals. Municipal water supply and wastewater systems. Hydrological research and monitoring.

Advantages

Very slim Ø17 mm – ideal for deep and narrow boreholes
High accuracy and long-term stability
IP68 rating with stainless steel construction
RS485 / HART communication
Ex ia certification – safe for hazardous areas

Disadvantages

Requires power supply (11–28 V DC)
Higher price compared to basic household sensors