- The DV7 submersible velocity sensor is based on the principle of Doppler Effect; it exploits the latest IDSR (Intelligent Doppler Signal Recognition) technology and innovative engineering design. It outputs velocity value by employing the frequency shift between a transmitting ultrasonic wave and its echo caused by suspended particles or gas bubbles (discontinuities) in motion. The sensing elements are Doppler ultrasound twin 1 MHz piezoelectric crystals. The built-in electronic unit performs velocity calculation and outputs digital signal to a receiver like the Delta-Phase GDC. The receiver combines with level signal of a known flume cross section to provide corresponding Area/Velocity flow measurement for open channel and non-full pipe application without primary device. The DV7 measures average velocity directly, no more tedious flow profiling work, and significantly reduces the cost of installation and operation for industrial and municipal wastewater pipeline applications provided that the liquid contains at least 50ppm with suspended solids larger than 30 micrometers.
* Easy installation and fast setup with no veloc-ity calibration required.
* Completely sealed sensor withstands sub-mergence and prolonged surcharge condi-tions.
* Advanced, ultrasonic 1 MHz Doppler tech-nology avoids signal dropouts and ensures high levels of measurement accuracy even in low flow, reversed flow, full pipe and relative-ly clean water conditions.
* Signal auto-correlation detection and pro-cessing technology significantly reduces the noise caused by interference, which improves anti-jamming capability of the instrument.
* RS485 with Modbus RTU protocol.
* Fully compatible with Delta-Phase ViewTM for easy setup and data logging.
* POM Housing, Optional SS 316L.