Description
The LL-MINI-CTD-ABS-010 is a 10m water level sensor with conductivity, temperature and salinity measurements. The sensor incorporates an Absolute piezoresistive sensor to monitor depth. This sensor doesn’t require a vent tube to the surface, but will require readings are compensated for barometric pressure readings taken at the surface. The sensor includes the same 4 ring stainless steel to measure conductivity and salinity measurements with an integral temperature sensor to provide temperature compensated values. This ensuring accurate readings across the full operational temperature range of -20 to +80°C. Users can select from a range of cable lengths and AquaConn connectors.
The sensor housing is constructed from a carbon fibre and titanium composite. This material selection provides a high strength-to-weight ratio and enhanced corrosion resistance, critical for reliable long-term deployment in challenging environmental conditions, including saline solutions.
Features
- 0.05% FS accuracy.
- Carbon fibre and titanium body.
- 2 year warranty.
- SDI-12, RS485/MODBUS direct out communications.
- Can be connected to the AquaTel for complete remote monitoring system.
- Can be connected with the BlueLink adaptor for short-term monitoring.
- Vented option available
Applications
- Groundwater level monitoring, pump tests, slug tests etc.
- Stream, lake and reservoir water level measurement.
- Wetland and flood water monitoring.
- Coastal monitoring.
- Tank level measurement.
- Long term continuous monitoring in boreholes, surface water and seawater applications.
- Process applications.
- Flood warning systems.
Specifications
| GENERAL | |
|---|---|
| Temperature ranges | Operational: -20-80°C, Storage: -40-80°C, Compensated: -20-80°C | 
| Diameter | 22mm | 
| Length | 146mm | 
| Weight | 210g | 
| Materials | Titanium body, Delrin nose cone | 
| Output options | Modbus/RS485, SDI-12, Aquaread proprietary | 
| External power | 6-24vDC | 
| OUTPUT RATE | |
| Fastest Modbus output rate | 1 per second | 
| Fastest SDI-12 output rate | 1 per second | 
| SENSOR | |
| Type / Material | Piezoresistive ceramic | 
| Range (Absolute) | 10.0M (32.8 ft) | 
| Maximum pressure | Max 2x range, Burst 2.5x range | 
| Accuracy (FS) | ±0.05% FS | 
| Resolution | 0.002% FS or 1mm whichever is greater | 
| Units of measure | Pressure: mbar (psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O), Level: m, ft, mm, cm and mm available in Levelink | 
| ELECTRICAL CONDUCTIVITY | |
| Range | 0 – 200mS/cm (0 – 200,000μS/cm) | 
| Resolution | 1μS | 
| Accuracy | ±1% reading or ±1μS whichever is greater | 
| SALINITY | |
| Range | 0-70 PSU / 0-70 ppt (g/Kg) | 
| Resolution | 0.01PSU / 0.01 ppt | 
| Accuracy | ±1% reading or ±0.1 unit, if greater | 
| TEMPERATURE SENSOR | |
| Accuracy & resolution | ±0.1°C, 0.01°C | 
| Units of measure | Celsius (fahrenheit available in Levelink) | 
| WARRANTY | |
| Standard | 2 years on all LeveLine-Mini versions | 
| Extended | Options Available | 
 
				