Leviflow® LFSC-12 Clamp-On Sensor For Flexible Tubing

The LEVIFLOW^® clamp-on flowmeter is designed for non-invasive flow measurements of high purity fluids with flexible tubing. Two piezoelectric transducers, mounted in the sensor housing, generate and receive an ultrasonic wave. The wave going in direction of the flow (with-stream wave) is accelerated and the wave going against the flow direction (against-stream wave) is slowed down. The two waves are processed by a signal converter. The difference of the transit time of both waves is proportional to the velocity of the fluid.

The standard configuration of the LEVIFLOW^® clamp-on flowmeters (Figure 1) consists of a flow sensor and a converter with a digital signal processor (DSP) for processing the sensor signals. The LFSC-12 can measure a flow up to 10 l/min. Various signals (analog output, 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. In addition, the sensor value is shown on a 4-digit display. For debugging, data collection and configuration with a PC the LEVIFLOW® Configuration Software is available at Levitronix® together with a USB to RS485 adaptor (see Figure 2).

System Benefits

• No contamination due to non-invasive measurement

• No moving parts - no particle generation

• Improved bubble robustness due to DSP technology

• Flow control together with Levitronix® MagLev Pumps

• Easy integration into OEM equipment

• Easy configurable flow sensor parameters (PC software) 

• Low pressure loss

• High turn down ratio

• Low disposable costs (tubing cost only)