LEVIFLOW® - Ultraclean Flow Measurement
LEVIFLOW® flowmeter series are designed for non invasive high precision flow measurements of high purity fluids. Two piezoelectric transducers, mounted at both ends of the measuring path of the fluid stream, generate and receivean ultrasonic wave. The wave going in direction of the flow (with-stream wave) is accelerated and the wave going against (against-stream wave) the flow direction is slowed down. The two waves are processed by a signal converter. The difference of the transmit time of both waves is proportional to the velocity of the fluid.
The standard configuration of the LEVIFLOW® flowmeters consists of a flow sensor and a converter with a digital signal processor (DSP) for processing the sensor signals. Five flow sensor sizes are available to measure flows from the ml/min range up to 80 l/min. Various signals (analog, digital input and digital output) are provided and can be configured with a PC software. A two wire RS485 bus allows arrays of multiple flowmeters where sensor signals can be received by MODBUS protocol. In addition, the sensor value is shown on a 4-digit display.
For high volume applications a multi-channel converter is available, which processes 6 sensors with one single converter. The sensor signals are available by MODBUS interface (RS485), hence reducing significantly cabling, space and costs.
- No contamination due to non-invasive measurement
- High accuracy (1% of reading) and repeatability (≤ 0.5%)
- No moving parts - no particle generation
- Improved bubble robustness due to DSP technology
- High precision flow control together with Levitronix MagLevPumps
- Easy configurable flow sensor parameters (PC software)
- MODBUS protocol, baud rate 57600
- RS485 2 wire cabling
- Address potentiometers for RS485 address setting
- Up to 64 channels
- 5 ms DSP process/time per channel
- Optional: RS232 to RS485 Converter or USB to RS485 Converter