InnovaSonic 203 Economical Ultrasonic Transit-Time Flow Meter

Sierra’s new Innova-Sonic® 203 ultrasonic flow meter delivers highly accurate and repeatable flow measurement for water at a significantly reduced cost. Incorporating the core technologies of Sierra’s flagship 205i, the design of the 203 universal transit-time flow meter is focused on those features that optimize the measurement of water flows in HVAC, irrigation, and other water applications.

Ideal for pipes up to 48” (1200 mm) in diameter, the 203 promises accuracy to +/-1.0% of reading, repeatability of +/-0.3% of reading and a temperature range of 32oF to 140o F (0oC to 60oC).

The 203 offers low power consumption and high reliability at a very competitive price. An easy to read display and clear, user-friendly menu selections make using the instrument simple and convenient. It can be configured via a 4x4 keypad without additional programming devices and features a 20 x 2 digit alpha-numeric display.

The 203 features a programmable frequency output, a relay output and a programmable current loop output. RS 232 and MODBUS RTU are standard, while RS 485 is optional.

The Innova-Sonic® 203 is packaged in a lightweight polycarbonate IP65 housing and includes clamp-on encapsulated IP 68 sensors that are easy to install and require no pipe cutting, thereby reducing installation and labor costs.

  • Accuracy +/- 1.0% of reading (from 1.5 to 13 fps; 0.5 to 4.0 mps) 
  • Repeatability +/- 0.3% of reading 
  • Wide operating temperature range 32oF to 140F (0oC to 60oC) 
  • Wide bi-directional Flow range of 0 to 40 ft/s (0 to 12 m/s) 
  • One meter for a wide range of pipe sizes from 1” to 48” (25mm to 1200mm) 
  • Configurable pulse and relay output 
  • RS 232 (RS 485 optional) 
  • 10-24 VAC or 10-36 VDC, 1A 
  • Daily, monthly and yearly totalized flow 
  • 16 (4 x 4) keyboard with 20 x 2 line display 
  • Clamp-on encapsulated IP 68 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 
  • Lightweight (0.7 kg; 1.5 lb) PC/ABS IP 65 transmitter 
  • Measurement is independent of fluid conductivity meaning a wider applicability compared to magnetic meters 
  • Programmable frequency output and VAC power emulates turbine/propeller meters