Ultrasonic Liquid Flow Meter - InnovaSonic 207i

Ultrasonic Liquid Flow Meter With Thermal Energy/BTU Capability

  • High accuracy transit-time ultrasonic technology
  • Software apps for ease of installation & diagnostics
  • Optimized for thermal energy/BTU measurement
  • Clamp-on sensors, no pipe cutting, no shutdown
  • Real-time liquid density compensation
  • Upgrade meter firmware and software in the field
  • Part of Sierra's Big-3 iSeries family of flow meter technologies.
 InnovaSonic 207i Ultrasonic Liquid Flow Meter

InnovaSonic 207i Ultrasonic Liquid Flow Meter




Technical Details

Accuracy +/- 0.5% of reading from 0.16 to 40 ft/s (0.05 to 12 m/s)
Repeatability +/- 0.15% of reading >0.16 ft/s (0.05 m/s)
Flow Velocity Range
  • Bi-directional flows: 0.16 to 40 ft/s (0.05 to 12 m/s)
  • Note: 0.08 ft/s (0.025 m/s) is the default low flow cut-off
Pipe Size 2 to 236 inches (50 to 6000 mm)
Resolution 0.01 ft/s (0.00025 m/s)
Response time 150 ms measuring cycle
Temperature Ambient electronics: -4°F to 140°F (-20°C to 60°C)
Clamp-on transducers operating temperature range 14°F to 176°F (-10°C to 80°C)
Clamp-on high temperature transducers operating temperature range 14°F to 302°F (-10°C to 150°C)
Insertion DIA transducers
  • 1.5 in (38.1 mm)
  • Operating temperatuer range: -40°F to 176°F (-40°C to 80°C)
Insertion pressure Limited to 300 psig (20 barg)
Relative Humidity Up to 99% RH, (non-condensing)
Power Supply
  • 90 to 250 VAC, 48 to 63 Hz
  • 10 to 36 VDC (both are available on each unit)
  • Power consumption <10W, 5V @2A fused
Analog Output
  • Active or passive 4-20 mA current loop
  • Accuracy 0.1% of reading
Pulse Output 0 to 9999 Hz, OCT, (min. and max. frequency is adjustable)
Solid state relay
  • 250 VDC/VAC max
  • 100 mA max
  • 40 Ohm max on-state resistance no/nc (SPDT)
Digital Output RS-485, RS-232, optional Modbus RTU, optional BACnet (pending)
Display 160 x 240 LCD backlit display
Boiler MACT certified Yes
Complete Smart Interface Portal (SIP) for meter set up
  • User-centered software allows for easy installation and field validation via USB or RS-232.
  • Includes Apps like:
    • Quick Install: Step-by-step meter commissioning and setup
    • MeterFit™: Makes transducer set up easy for a strong signal
    • EnergyPro™: Step-by-step thermal energy/BTU setup
    • ValidCal Diagonstics™: Validate firmware hardware health

Product Information

Designed, built and calibrated by Sierra for non-intrusive liquid flow metering, and optimized for thermal energy / BTU measurement, the InnovaSonic® 207i transit-time ultrasonic flow meter is the ideal turnkey solution for building and district metering, and submetering. Watch the video to discover all of InnovaSonic 207i's capabilities.

Designed, built and calibrated by Sierra for non-intrusive liquid flow metering, and optimized for thermal energy / BTU measurement, the InnovaSonic 207i transit-time ultrasonic flow meter is the ideal turnkey solution for building and district metering, and submetering.

Making Installation Easier

With the InnovaSonic 207i’s clamp-on sensors, there’s no pipe cutting or expensive plumbing.

The 207i features a large backlit display and dual-function keypad with audible feedback. With its visual sensor spacing tool on the local display or using the software app, slightly move the sensors together or apart to position the indicator line between the “goal posts” and assure optimal signal strength.

World Class Calibration

Learn how to easily install and operate the InnovaSonic 207i Transit-Time Ultrasonic Flow Meter for thermal energy/BTU and liquid applications in this technical training video.

Every flow meter is only as good as its calibration. To assure the highest accuracy possible, each InnovaSonic is calibrated at Sierra’s flow calibration facility in Monterey, California which consistently delivers calibration accura-cies of +/- 0.2% of reading.

All calibrations follow the guidelines of ISO 17025 and are directly traceable to national standards such as NIST (United States National Institute of Standards and Technology).

Fully automated, once flow application data is programmed, calibration automation software manages all aspects of flow calibration testing. High-speed time-aligned data acquisition and performance analysis over the entire flow measurement range occurs. A calibration certificate documenting instrument performance is then generated.

Sierra’s Big-3 Technologies

The InnovaSonic 207i is one of three advanced flow meter technologies Sierra has developed to help facility managers tackle tough energy management challenges.

For what we call our Big-3, Sierra has become a recognized expert in thermal mass (QuadraTherm®), vortex shedding (InnovaMass®), and transit-time ultrasonic (InnovaSonic®). Sierra is the only company in the USA to manufacture all three flow technologies.

The Big-3 are optimized to be a complete solution for flow energy measurement—facility flows that impact costs like compressed air, natural gas, steam, and hot or chilled water. As new apps and improvements become available, all Big-3 technologies benefit and are field firmware upgradable.


Common Applications

  • Thermal energy/BTU measurement
  • Cooling and heating fluid measurements
  • Water and wastewater measurements
  • Leak detection in piping systems
  • Monitoring and controlling of HVAC systems
  • Fuel and oil consumption measurements
  • Contactless product recognition
  • Interface detection
  • Offshore applications
  • Automated process control

Product Benefits

  • Designed for liquid flow metering applications
  • Thermal Energy/BTU capability
  • Tolerant of liquids with small amounts of air bubbles or suspended solids
  • Ideal for large line sizes or exotic materialsClamp-on standard, insertion transducers available
  • Transducers clamped to outside of pipe
  • Install meter during plant operations-no process shut downs, no leakage risks
  • No moving parts to clog or fatigue like turbine meters
  • Permanent or temporary installations
  • Immune to the process compatibility concerns
  • Operational safety and robustness
  • High zero stability, nearly drift free
  • Optional clamp on or insertion PT 100 RTDs transducers-
  • matched pair and temperature compensated
  • Mounting kit included to lock transducer into place
  • Modular electronics enabling field upgrades
  • Large display with push buttons, user-friendly menu
  • Keypad with 16 tactile keys with 14 dual-function keys with audible feedback
  • Internally configured batch controller makes batch control convenient
  • Daily, monthly and yearly totalized flow rate
  • Positive, negative and net flow totalizers with user selectable scale factors)
  • 16 MB SD card high-memory data logger
  • Easy Installation with Smart Interface Portal Software (SIP)
  • Field validation/configuration to assure operating performance with SIP
  • Local display with Quick key buttons for:
    • Flow, totalized flow
    • Velocity
    • Fluid
    • Signal and diagnostics
  • Configurable pulse, analog and frequency outputs
  • Fully field configurable
  • Compact, low-cost alternative to Coriolis meters