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Description
The LeveLine-Mini-CTD adds conductivity and salinity measurements to the Leveline-Mini water level sensor. The sensor incorporates piezoresistive sensor, the same 4 ring stainless steel conductivity as our multiparameter water quality probes for robust EC and salinity measurements and integral temperature compensation circuitry, ensuring accurate readings across an operational temperature range of -20 to +80°C. Users can select from various full-scale pressure ranges and specify either an absolute or gauge pressure reference, along with a range of cable termination options.
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.
- 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 (Gauge & Absolute) | 10.0M (32.8 ft), 20.0M (65.6 ft), 50.0M (164 ft), 100M (328 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 |
