InnovaSonic 205i Ultrasonic Flow Meter

Sierra’s Innova-Sonic® 205i ultrasonic flow meter incorporates the latest developments in digital signal processing to deliver highly accurate and repeatable flow measurement for a wide variety of liquids and pipe sizes. The 205i has sophisticated electronics coupled with powerful ultrasonic transducers to make this universal transit-time flow meter the top choice of industry leaders.


An easy to read display and clear, user-friendly menu selections make using the instrument simple and convenient. Short Cut key buttons for flow, totalized flow, velocity, fluid, signal and diagnostics make set up and data collection even easier. High temperature clamp-on and insertion options
are available, making the unit more flexible. PCA’s inside the meter have been modularized, enabling field swap out for upgrades.

The 205i also features a large alpha-numeric display, parallel operation of positive, negative and net flow totalizers (with user-selectable scale factors), and configurable pulse, analog and frequency outputs. SD data logging capability is included and energy monitoring is fully supported.

The 205i offers low power consumption and high reliability. The instrument can be configured via keypad without any additional programming devices. It is packaged in a die cast NEMA 4X (IP65) housing, and is available in your choice of non-invasive clamp-on or insertion transducer configurations.

  • Accuracy +/- 0.5% of reading 
  • Repeatability +/- 0.15% of reading 
  • Wide bi-directional Flow range of 0 to 40 ft/s (0 to 12 m/s) 
  • Available with standard clamp-on transducers -40oF to 176oF (-40oC to 80oC) or high temperature clamp-on transducers -40oF to 300oF (-40oC to 150oC) 
  • Available with standard (1.5" (30mm) diameter) insertion transducers or
small (0.75" (19mm) diameter) insertion transducers for pipes smaller than 16" (DN 400) -40oF to 176oF (-40oC to 80oC) 
  • Available with insertion high temperature transducers (1.5" (30mm) diameter) -40oF to 300oF (-40oC to 150oC) 
  • One meter for a wide range of pipe sizes from 1" to 200” (25mm to 5000mm) 
  • Clamp-on sensors require no pipe cutting, no plant shut-down, are a hygenic measurement leading to lower installation and labor costs 
  • Daily, monthly and yearly totalized flow 
  • Internally configured batch controller 
makes batch control convenient 
  • 1GB SD card high memory data logger 
  • MODBUS RTU RS 232, RS 485 standard 
  • Energy monitoring option; accepts two direct-wired RTD's