This submersible probe offers simultaneous measurement of both water level and temperature in freshwater environments down to 10 meters (32.8 feet). It delivers accurate hydrostatic level measurements and independent temperature readings, providing a comprehensive understanding of critical water parameters. The robust 316L stainless steel housing ensures durability and corrosion resistance, making it suitable for long-term deployment in various freshwater conditions.
The S12C probe incorporates a vented PUR cable, designed with an internal vent tube to ensure atmospheric pressure equalization. This equalization is essential for accurate hydrostatic pressure readings, as it allows the sensor to compensate for changes in atmospheric pressure. The self-flushing nose cone further enhances the probe’s performance by minimizing sediment buildup, which is particularly beneficial in environments with suspended particles or slow-moving water. For added versatility in installation, the nose cone can be removed to reveal a G1/4 male thread, enabling alternative mounting configurations.
A key advantage of this sensor is its utilization of the SDI-12 digital communication protocol. SDI-12 is a widely adopted standard in environmental monitoring and hydrology, known for its efficient data structure and robust performance in remote applications. The inclusion of a USB interface further enhances its versatility, allowing seamless integration with various data logging systems, telemetry devices, and remote monitoring setups. This makes it particularly well-suited for applications such as:
- Continuous monitoring of water levels and temperature in remote or inaccessible water bodies like wetlands and floodplains.
- Data collection for hydrological studies, including water balance analysis and assessment of thermal stratification in lakes.
- Integration with early warning systems for flood prediction and effective water resource management.
- Long-term environmental monitoring programs in delicate ecosystems, providing valuable data for research and conservation efforts.
The combination of accurate level and temperature measurement, robust construction, and SDI-12 compatibility makes this probe an invaluable tool for researchers, environmental agencies, and water management professionals seeking reliable and comprehensive data acquisition in freshwater environments.

S12C SDI-12 Freshwater Level and Temperature Probe
- Pressure Datum: Gauge
- Pressure Range: 0 – 10mW
- Electrical Connection: Vented PUR Cable
- Housing Material: 316L Stainless Steel
- Cable Length (enter in mtrs): 10 metre PUR
- Specials Code: No Special Requirements
- Output: SDi-12 to USB interface
- Supply Voltage: 6 – 32V dc
- Accuracy (Non-linearity): <±0.15% / FS (BFSL)
- Thermal Errors (TZS & TSS): <±0.1% over 20°C±25°C
- Media Temperature: -20 to +60°C non freezing
- Storage Temperature: -20°C to +70°C
- Compensated Temperature: 20°C ± 25°C
- Process Connection: Self flushing nose cone (G1/4 male when removed)
- Diaphragm Material: Aluminium Oxide 96% (Ceramic Al2O3)