The AquaTrak’s technology uses a ratiometric time comparisons of sequential sonic/pressure pulses that travel inside an environmental protected PVC tube between the sensor transducer to the liquid. The AquaTrak 5000 controller, which is connected to the data logger, can be located up to 1000 feet from the AquaTrak transducer. The AquaTrak transducer combined with the controller calculates the true average level even in the presence of waves and surging liquid surfaces. The sample rates, number of samples averaged and data requested are selectable. Continuous measurement or exclusive data sets without outlier bias are standard operating routines. Self-calibrated measurement correction for ambient temperature, atmospheric pressure and gas density within the calibrated range(s), yields an accuracy of ± 3mm.

These technology features combined the AquaTrak providing US NOS (National Oceanographic Services) standard average algorithm to determine the standard deviation for each data set used to calculate the average wave height during the sample period has resulting in the AquaTrak becoming the world-wide sensor of choice in GLOSS (Global Sea Level Observing System) tide and sea state measurements.

The Aquatrak 5000 Series continues the tradition of accuracy and reliability of its predecessors. Added capabilities and features include:

• Repackaged as a single integrated unit. The electronics is now in the sensor head.
• Reduced power consumption.
• Field programmability - applications code loadable via the RS-232 port.
• Includes three external temperature probes.
• Concurrent Measurements.

Batten Powered
The sensor is designed for continuous long-term unattended operation; it draws less than 9 ma operating, less than 7 ma quiescent.

Durability
The sensor and electronics are integrated into a single unit and are enclosed and sealed in a durable shock resistant PVC housing.

Economical
The lightweight sensor and range tube assembly is easily mounted at any angle from which the tube is immersed to the lowest significant level with minimal site preparation. Sensor to Data Collection Platform separation up to 1,000 feet can be accommodated.

• Tide and Sea State
• River Stage
• Groundwater
• Head/Tail Water
• Tank Ullage

Technology
Unique patented means of ratiometric time comparisons of sequential sonic''pressure pulses. Environmentally protected within a small diameter ranging tube. Aquatrak instruments reliably provide performance unequalled in the industry.

Accuracy
Self-calibrated measurement correction for ambient temperature, pressure, and gas density within the calibrated range(s); yields accuracy of better than ±3mm.

Reliability
Non-mechanical implementation with no bushings, bearings, gears, floats, or immersed active elements. Aquatrak sensors have a field-proven reliability record of better than 1,000,000 hours MTBF.

Versatility
The all-digital 5000 Sensor with internal microcomputer relieves the host system of level measurement routines. RS-232 and SDI-12 interfaces make it compatible with commonly-used data loggers, computers, controllers, and modems.

• Standard dynamic range: >35 feet (10 meters)
• Optional dynamic range: >50 feet (15.24 meters)
• Special dynamic range: 75 feet (22.86 meters)
• Standard accuracy: ± 0.025%
• Nonlinearity: ± 0.02%
• Input voltage: 12.5 ± 2 VDC
• Operating current: 9 mA
• Quiescent current: 7 mA
• Operating temperature: -40 to +131 °F (-40 to +55 °C)
• Temperature drift: < 1 ppm/°C
• Size (diameter x height): 3.25 in. x 9 in.
• Weight: 2.5 lbs. (1.14 kg)