Aquaread LeveLine Mini CTD Water Level

Aquaread LeveLine Mini CTD Water Level

Aquaread LeveLine Mini CTD Water Level is a titanium water level, temperature, conductivity and salinity measuring sensor that has been specifically designed to bring conductivity and salinity measurements to your telemetric deployments.

The LeveLine-Mini-CTD is available in both absolute and gauge versions. If your chosen datalogger / telemetry device includes a built-in air pressure sensor, we recommend the absolute version as the logging device can utilise the air pressure reading for compensation. If an air pressure sensor is unavailable then the gauge version is best suited for telemetric logging.

Gauge sensors require vented cables and desiccant cartridges to remove any moisture from the vent to prevent blocking and inaccurate compensation.

Aquaread LeveLine Mini CTD Water Level Specifications

General

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

Memory

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

 

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Sensor

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

Electrical Conductivity

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)

Salinity (note 4)

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

Temperature Sensor

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)

Warranty

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

Reference : aquaread.com

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