A quick introduction to the LeveLine-CTD water level, temperature, conductivity and salinity logger.
The brand new Leveline CTD from Aquaread expands our range of highly accurate water level loggers to now include an all in one level, temperature, conductivity and salinity level logger.
Take a look at some of the features:
The Leveline CTD is an ideal choice to measure level and conductivity levels in the following applications,
• Salt water intrusion and soil salination monitoring
• Contaminant plume remediation monitoring and studies
• Leachate monitoring at landfills, mine, waste disposal storage sites
• Agricultural and storm water runoff monitoring
• Tracer tests
The leveline CTD is manufactured from titanium and is ideal for long term deployment in the harshest of environments. It also has a leading accuracy, 500,000 data point memory and direct SDI12/RS485 output. Absolute or gauge variants are to cover all the usual applications from groundwater to surface water.
Telemetry is also available to add this sensor into a large network of monitoring instruments and can be easily combined with our range of water quality aquaprobes.
The 4 ring stainless steel sensor of the LeveLine-CTD measures the conductivity of the water sample. From this reading along with temperature, salinity can be calculated automatically. Salinity would normally only be calculated during data analysis using other sensors. This makes the LeveLine-CTD an ideal choice for telemetric deployments, you get all of the readings straight out of the logger with no extra calculation or analysis required.
Calibration of the conductivity sensor can be carried our using any concentration of solution between 100µS – 99,999µS, it is user programmable. Calibration scan be performed with when the LeveLine-CTD is connected to the PC through LeveLink or when connected to the GPS LeveLine meter.
Initiate planned logging with the QuickDeploy keep to ease deployment Embed the LeveLine with its deployment’s GPS coordinates
| LEVELINE – (Abs & Gauge) | LEVELINE – BARO | LEVELINE- MINI | LeveLine-CTD | LeveLine-Mini-CTD | |
| Temperature ranges | Operational: -20-80° C (-4-176° F) Storage: -40-80° C (-40-176° F) Compensated: -20-80° C (-4-176° F) |
Operational: -20-80° C (-4-176° F) Storage: -40-80° C (-40-176° F) Compensated: -20-80° C (-4-176° F) |
Operational: -20-80° C (-4-176° F) Storage: -40-80° C (-40-176° F) Compensated: -20-80° C (-4-176° F) |
Operational: -20-80° C (-4-176° F) Storage: -40-80° C (-40-176° F) Compensated: -20-80° C (-4-176° F) |
Operational: -20-80° C (-4-176° F) Storage: -40-80° C (-40-176° F) Compensated: -20-80° C (-4-176° F) |
| Diameter | 22.2mm (0.875 in) | 22.2mm (0.875 in) | 22.2mm (0.875 in) | 22mm | 22mm |
| Length | 186mm (7.32 in) | 186mm (7.32 in) | 87mm (3.43 in) | 260mm | 146mm |
| Weight | 150g (5.3oz) | 160g (5.6oz) | 120g (4.2oz) | 250g | 210g |
| Materials | Titanium body, Delrin nose cone | Stainless Steel body, Delrin nose cone | Stainless Steel body, Delrin nose cone | Titanium body, Delrin nose cone | Titanium body, Delrin nose cone |
| Output options | Modbus/RS485, SDI-12, Aquaread proprietary | Modbus/RS485, SDI-12, Aquaread proprietary | Modbus/RS485, SDI-12, Aquaread proprietary | Modbus/RS485, SDI-12, Aquaread proprietary | Modbus/RS485, SDI-12, Aquaread proprietary |
| Battery type & life | 3.6V lithium; up to 10 years (see note 1) | 3.6V lithium; up to 10 years (see note 1) | N/A | 3.6V lithium; up to 10 years (see note 1) | N/A |
| External power | 6 – 30 VDC | 6 – 30 VDC | 6 – 30 VDC | 6 – 24 VDC | 6 – 24 VDC |
| LEVELINE – (Abs & Gauge) | LEVELINE – BARO | LEVELINE- MINI | LeveLine-CTD | LeveLine-Mini-CTD | |
| Size | 8.0 MB | 2.0 MB | N/A | 8.0 MB | N/A |
| Data records | 500,000 | 150,000 | N/A | 500,000 | N/A |
| Log types | Linear, Event & User-Selectable Schedule with Future Start, Future Stop, Deploy Start and Real Time View |
Linear, Event & User-Selectable Schedule with Future Start, Future Stop, Deploy Start and Real Time View |
N/A | Linear, Event & User-Selectable Schedule with Future Start, Future Stop, Deploy Start and Real Time View |
N/A |
| Fastest logging rate & Modbus rate | 10 per second | 1 per minute (logging) 5 per second (Modbus) |
10 per second (Modbus Rate) | 1 per second | 1 per second |
| Fastest SDI-12 output rate | 1 per second | 1 per second | 1 per second | 1 per second | 1 per second |
| Real-time clock | Accurate to 1 second/24-hr period (± 6 minutes/year) | Accurate to 1 second/24-hr period (± 6 minutes/year) | N/A | Accurate to 1 second/24-hr period (± 6 minutes/year) | N/A |
| LEVELINE – (Abs & Gauge) | LEVELINE – BARO | LEVELINE- MINI | LeveLine-CTD | LeveLine-Mini-CTD | |
| Type / Material | Piezoresistive; ceramic | Piezoresistive; ceramic | Piezoresistive; ceramic | Piezoresistive; ceramic | Piezoresistive; ceramic |
| Range (Absolute) | 10.0m (32.8 ft), 20.0m (65.6 ft), 50.0m (164 ft), 100m (326 ft), 200m (656 ft) | 0 to 16.7 psi; 0 to 1.15 bar | 10.0m (32.8 ft), 20.0m (65.6 ft), 50.0m (164 ft), 100m (326 ft), 200m (656 ft) | 10.0M (32.8 ft), 50.0M (164 ft), 20.0M (65.6 ft), 100M (326 ft) | 10.0M (32.8 ft), 50.0M (164 ft), 20.0M (65.6 ft), 100M (326 ft) |
| Range (Gauge) | 10.0m (32.8 ft), 20.0m (65.6 ft), 50.0m (164 ft), 100m (326 ft), 200m (656 ft) | N/A | N/A | 10.0M (32.8 ft), 50.0M (164 ft), 20.0M (65.6 ft), 100M (326 ft) | 10.0M (32.8 ft), 50.0M (164 ft), 20.0M (65.6 ft), 100M (326 ft) |
| Maximum pressure | Max 2x range, Burst 2.5x range | Max 2x range, Burst 2.5x range | Max 2x range, Burst 2.5x range | Max 2x range, Burst 2.5x range | Max 2x range, Burst 2.5x range |
| Accuracy (FS) (see note 3) | ±0.05% FS | ±0.1% FS | ±0.05% FS | ±0.05% FS | ±0.05% FS |
| Accuracy (FS) (See note 2) | ±0.1% FS | ±0.2% FS | ±0.1% FS | ±0.1% FS | ±0.1% FS |
| Resolution | 0.005% FS or 1mm whichever is greater | 0.1mb | 0.005% FS or 1mm whichever is greater | 0.002% FS or 1mm whichever is greater | 0.002% FS or 1mm whichever is greater |
| Units of measure | Pressure: psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O, Level: in, ft, mm, cm, m | Pressure: psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O | Pressure: psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O, Level: in, ft, mm, cm, m | Pressure: mbar (psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O, Level: in, ft, mm, cm and m available in LeveLink | Pressure: mbar (psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O, Level: in, ft, mm, cm and m available in LeveLink |
| LEVELINE – (Abs & Gauge) | LEVELINE – BARO | LEVELINE- MINI | LeveLine-CTD | LeveLine-Mini-CTD | |
| Range | N/A | N/A | N/A | 0 – 200mS/cm (0 – 200,000µS/cm) | 0 – 200mS/cm (0 – 200,000µS/cm) |
| Resolution | N/A | N/A | N/A | 1µS | 1µS |
| Accuracy | N/A | N/A | N/A | ± 1% reading or ±1µS whichever is greater (see note 5) | ± 1% reading or ±1µS whichever is greater (see note 5) |
| LEVELINE – (Abs & Gauge) | LEVELINE – BARO | LEVELINE- MINI | LeveLine-CTD | LeveLine-Mini-CTD | |
| Range | N/A | N/A | N/A | 0 – 70 PSU / 0 – 70 ppt (g/Kg) | 0 – 70 PSU / 0 – 70 ppt (g/Kg) |
| Resolution | N/A | N/A | N/A | 0.01PSU / 0.01 ppt | 0.01PSU / 0.01 ppt |
| Accuracy | N/A | N/A | N/A | ±1% reading or ± 0.1 unit if greater | ±1% reading or ± 0.1 unit if greater |
| LEVELINE – (Abs & Gauge) | LEVELINE – BARO | LEVELINE- MINI | LeveLine-CTD | LeveLine-Mini-CTD | |
| Accuracy Resolution | ±0.1° C 0.01° C |
±0.1° C 0.01° C |
±0.1° C 0.01° C |
±0.1° C; 0.01° C | ±0.1° C; 0.01° C |
| Units of measure | Celsius | Celsius | Celsius | Celsius (fahrenheit available in LeveLink) | Celsius (fahrenheit available in LeveLink) |
| LEVELINE – (Abs & Gauge) | LEVELINE – BARO | LEVELINE- MINI | LeveLine-CTD | LeveLine-Mini-CTD | |
| Standard | N/A | N/A | N/A | 2 years | 2 years |
| Extended | N/A | N/A | N/A | Options Available | Options Available |
Notes: 1) Dependent on logging rate. 2) Across factory-calibrated pressure range at a constant temperature. 3) Across factory-calibrated pressure and temperature ranges. 4) Readings calculated from EC and temperature values. 5) At the calibration point at 25°C
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