Aanderaa RCM Blue Doppler Current MeterOn the basis of the proven SeaGuard Zpulse Doppler sensor, a comprehensive upgrade has been carried out. Improved measurement accuracy, effectively eliminating eddy current disturbances around the sensor and interference from cables. Suitable for measuring flow velocity, direction, and temperature in both marine and freshwater environments. Built in Bluetooth communication module and data storage function, instrument settings and data transmission can be completed without opening the pressure chamber when throwing again. Equipped with a large capacity battery compartment, it can maintain a longer continuous monitoring cycle. The tilt automatic correction function can still obtain accurate flow velocity information even at a tilt angle of 50 degrees. Specially developed Data Studio data processing software that enables easy data management, charting, and Excel output.

·Internal data storage

·System configuration and data transmission function based on Bluetooth communication

·Equipped with a temperature sensor and capable of recording temperature data simultaneously

·70AH battery compartment, capable of continuous monitoring for up to 19 months at specific frequencies

·Equipped with LED status indicator lights

·Software developed specifically for system settings and data downloads, compatible with USB Bluetooth adapters

·The unique ZPULSE multi frequency acoustic technology can improve data quality, sampling speed, and reduce power consumption

·Built in solid-state three-axis compass and tilt sensor with compensation algorithm

·Directly read absolute flow rate, flow direction, and engineering data

·Fast sampling rate

·Effectively prevent contamination

·Low maintenance volume

The Doppler current meter RCM blue uses advanced ZPulse technology for self-contained monitoring of ocean currents and water temperature. RCM blue comes with Bluetooth function, which allows for instrument configuration and data download through Bluetooth. This avoids the need to frequently open the instrument casing for communication and data download during multiple deployment, reducing the workload for users.

Aanderaa RCM Blue Doppler Current Meter

Adopting the principle of backscattering acoustic Doppler, it has two orthogonal sensor axes, with two sensors on each axis. This enables bidirectional measurement on each sensor axis, and by activating the forward measurement function, the interference of eddy currents around the sensor and anchor chain can be greatly reduced. After enabling the forward measurement function, only one sensor on each axis simultaneously sends acoustic pulses and receives acoustic pulse reflection signals from particles, thereby measuring the orthogonal velocity components of the X-axis and Y-axis. After tilt compensation, the horizontal velocity component is obtained. By measuring the velocity vectors of the X-axis and Y-axis and calculating the orientation of the built-in solid-state electronic compass, the velocity components in the north and east directions are calculated. After multiple measurements are averaged, the flow velocity and direction are output.

Another significant advantage of the instrument is the use of advanced ZPulse technology, which improves the statistical accuracy of measurements. Complex acoustic pulse technology contains different frequencies in a single pulse. Divide the received signal into different frequency bands, and transmit each frequency band as a pulse signal to the processor. Use a high-speed digital processor and an ARMA parameter model algorithm to analyze the changes in Doppler frequency. This multi frequency technology reduces the number of pulses while achieving the required accuracy. In a measurement cycle, the measurement accuracy of the instrument is proportional to the reciprocal of the square of the pulse frequency. The ZPulse technology Doppler current meter uses dual frequency pulses, which can reduce the number of pulses to half of a single frequency when achieving the required measurement accuracy, greatly extending the battery life or shortening the measurement cycle with the same battery life, and obtaining more data.