Aquaread Leveline-CTD Water Level

Aquaread Leveline-CTD Water Level records highly accurate water level, temperature, conductivity and salinity measurements in a wide range of groundwater and surface water applications. Housed inside the sealed body is a ceramic level sensor, temperature sensor, 10-year lithium battery and a versatile datalogger with capacity for 500,000 data points.

The LeveLine CTD Absolute uses a piezoresistive ceramic pressure sensor to provide excellent durability and long-term stability whilst delivering an impressive accuracy of 0.05% FS. A variety of level ranges are available and all of them are temperature compensated across a scale of -20 to 80 deg. C. The conductivity sensor is adapted from our long established Aquaprobe range and records measurements of conductivity and salinity with an impressive 0-200,000 us/cm range or 0-70 PSU for Salinity.

Across the range of Leveline water level loggers we use an all Titanium body. Titanium is widely regarded as the best material to use in any water level logger but especially important when deploying into harsh or saline environments ensuring dependable long-term deployment.

Aquaread Leveline-CTD Water Level Features

05% FS Accuracy for Level
1% of reading accuracy for conductivity and
500,000 data point
10 Year Battery
Titanium
5 Year
Included LeveLink PC Software for basic and advanced data
SDI-12, RS485/MODBUS direct out
22mm x
Vented option

Applications

Saltwater
Contaminant plume
Tracer
Leachate
Groundwater level monitoring, pump tests, slug tests
Stream, lake, and reservoir water level
Wetland and flood water
Coastal
Tank level
Long term continuous monitoring in boreholes, surface water, and seawater
Spot

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.

Aquaread Leveline-CTD Water Level Specifications

		LeveLine-CTD	LeveLine-BARO
GENERAL	Temperature ranges	Operational: -20-80° C (-4-176° F)	Operational: -20-80° C (-4-176° F)
		Storage: -40-80° C (-40-176° F)	Storage: -40-80° C (-40-176° F)
		Compensated: -20-80° C (-4-176° F)	Compensated: -20-80° C (-4-176° F)
	Diameter	22mm	22mm
	Length	260mm	186mm
	Weight	250g	160g
	Materials	Titanium body, Delrin nose cone	Titanium body, Delrin nose cone
	Output options	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)
	External power	6 – 24 VDC	6 – 24 VDC

MEMORY	Size	8.0 MB	2.0MB
	Data records	500	150
	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
	Fastest logging rate & Modbus rate	1 per second	1 per minute (logging) 5 per second (Modbus)
	Fastest SDI-12 output rate	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)

SENSOR	Type / Material	Piezoresistive; ceramic	Piezoresistive; ceramic
	Range (Gauge & Absolute)	10.0M (32.8 ft) 50.0M (164 ft),
	Range (Gauge & Absolute)	20.0M (65.6 ft), 100M (326 ft)	0 to 16.7 psi; 0 to 1.15 bar
	Maximum pressure	Max 2x range, Burst 2.5x range	Max 2x range, Burst 2.5x range
	Accuracy @ 15° C (note 2)	±0.05% FS	±0.1% FS
	Accuracy (FS) (note 3)	±0.1% FS	±0.2% FS
	Resolution	0.002% FS or 1mm whichever is greater	0.1mb
	Resolution	Pressure: mbar (psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O, Level: in, ft, mm, cm and m available	Pressure: mbar (psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O, Level: in, ft, mm, cm and m available
	Units of measure	in LeveLink	in LeveLink

Electrical Conductivity	Range	0 – 200mS/cm (0 – 200,000µS/cm)	NA
	Resolution	1µS	NA
	Accuracy	± 1% reading or ±1µS whichever is greater (see note 5)	NA

Salinity (note 4)	Range	0 – 70 PSU / 0 – 70 ppt (g/Kg)	NA
	Resolution	0.01PSU / 0.01 ppt	NA
	Accuracy	±1% reading or ± 0.1 unit if greater	NA

Temperature sensor	Accuracy & resolution	±0.1° C; 0.01° C	±0.1° C; 0.01° C
Temperature sensor	Units of measure	Celsius (fahrenheit available in LeveLink)	Celsius (fahrenheit available in LeveLink)
Warranty	Standard	5 years	5 Years
	Extended	Options Available	Options Available