Products > USI Area Velocity Flowmeter

USI Area Velocity Flowmeter
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The Universal Smart Instrument (USI) is an innovative monitoring instrument and data-logger that delivers multi parameter measurement in a single device. Several instruments can therefore be replaced by a single USI in a wide range of clean water and waste water applications.

Whilst giving highly accurate and reliable monitoring, the USI sets itself apart from traditional instrumentation by utilising powerful processors (as used in smart phones and satellite navigation systems) and dynamic software to display real time data and graphs on its 7 inch high resolution touch screen. This provides the user with unrivalled accessibility and clarity of information.

Based on the robust and reliable industrial version of windows, the USI is as intuitive and simple to operate as a home computer, which makes both programming and operation simple and efficient. This ease of programming saves engineers endless hours and the frustrations often associated with programming industrial instrumentation.

The USI Area Velocity Flowmeter is optimised for use with Smart Storm Area Velocity Sensors which are renowned for their high accuracy and durability.


Windows Based Programming

Beautifully Simple – Windows CE is now recognized as a reliable and easy to use operating system. We are all familiar with its use in everyday life from computers to ATM machines. Smart Storm are proud to be the first company in this field to take the step forward to integrate Windows based programming into an industrial process and control instrument.

User friendly drop down menus, pop-up keypads, clear intuitive programming, pictorial graphics, visual representation of tanks, fast pick and selection of parameters, measurement simulation, both graphical and text displays, full colour background all combine to make the USI a truly user friendly experience.

USI ultrasonic level meter echo

Ultrasonic echo viewable directly on USI

Intuitive Programming


Smart Storm recognises that most industrial control products are a nightmare to programme and often come with a 200 page or more manual. Confusion and uncertainty often reigns when programming such instruments and small multi-line displays give little feedback to the user.

Hence, the USI offers a new dimension in intuitive programming. The software is wholly consumer orientated and intentionally designed to give the user a positive programming experience, without confusion and without uncertainty.

Programming options are instantly available through tab menus and give clear and precise options. Graphics are used to give clear choices when appropriate and parameter selection is simplicity itself. Programming pages are separated on the graphics display and once programmed the user can simply and easily review his programme choices on a single display screen. Just like a Smart phone the USI is quick and simple to navigate through!

Stunning Display

The USI uses a 7” TFT full colour 840×480 display to give sharp images and clear programming screens. In level applications tank shapes are selected from a pictorial map which does away with complicated programme selection as used by other manufacturers. Relays can be chosen from drop down menus and a graphical simulator is available to enable the user to simulate filling and emptying a tank in order to check his process control choice.

All information is clearly displayed thus avoiding confusion and uncertainty often found when programming other less advanced products.

The user even has the option to change background, text and shape colours to compensate for different ambient light conditions.


Smart Storm Ultrasonic Sensors


Smart Storm ultrasonic sensors are known for their reliability and highly accurate measurement, please see the ultrasonic sensors page to find out more and see full specifications.

Data Report

The USI is unique in that the user can display data reports and time elapsed graphs of all measured data directly on its own graphics display without the need to download to a PC or laptop. No other instrument offers this versatility and by simply inserting the date fields required, data is instantly displayed and can be analysed in situ without the need to reload back at the office.

Of course if the user wishes the data can be downloaded onto a USB stick in seconds and reloaded onto a separate PC with data displayed through our freely available Windows package “Inquisitor”.


Multiple Communications


The USI has it all – Ethernet connectivity for fast communications, 3×4-20mA inputs and 2×4-20mA outputs, a configurable UART for RS422 or Modbus connection and two USB ports for fast downloading of data.

Optionally, the user can have Profibus or GPRS for internet or mobile data connectivity.

High Performance as Standard

Incorporating the latest ARM and FPGA processors, full colour 7” graphics display, resistive touchscreen and 512Mbytes of storage the USI is faster and more fluid than any other product available.

Moving seamlessly across screens, with up to 20 years of data storage and on screen viewing of stored data both in tabular and graphical form, the USI takes measurement technology to a new level.


Vast Storage


The USI has up to 20 years of storage capacity for environmental measurement data.

Data can either be viewed on the USI itself or downloaded onto a USB stick or sent by Ethernet/GPRS to view on the windows based reporting software “Inquisitor” which is included with the product.

Remote Monitoring

The USI display screen can be viewed on a remote computer or through a GPRS modem. So at all times you can view the status of the USI without having to leave the office.

Great when sites are remote from your base or in numerous locations throughout the country and on rainy days it saves having to get the umbrella out.


Environmental monitoring can be performed in two ways:


1. Remote meters: Remote meters with 4-20mA outputs can be directly to the USI and scaled appropriately through the interactive menu.

2. Intelligent Modbus sensors are available from Smart Storm for environmental monitoring and up to 8 sensors can be daisy chained into the USI. This means there is no need for an independent second meter which provides vast cost savings, is more efficient and requires less space and cabling.

All information related to sensors can be found on the environmental sensors page.

One Instrument Multi-functional Measurement:
  • Open Channel Flow
  • Salinity
  • Turbidity (TSS)
  • pH
  • Dissolved Oxygen (DO)
  • Temperature

Detailed Specification

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User Interface


7.0″ High Resolution Full Colour TFT LCD Graphics Display 800×480 Anti-Glare


Touch Screen or Remote Keypad via USB Port

Operating System

Windows CE 6.0 R3 (licence included)


Dimensions (mm)



IP65/DIN VDE 60529 NEMA 12


ABS Lid UL94 HB/1.6 Polyamide Base UL94 VO/1


4 Fixed holes (Optional Wall Brackets or DIN Rail Holder)

Outputs & Communications


3×4.20MA Inputs & 2 Isolated Outputs (0.1% resolution) or 0-20mA User Programmable (0.1% resolution)

Digital 1

Standard Ethernet


8 x RS485, RTU and ASCII, Baudrate: 9600 or 19200, Parity: None, Even or Odd, Databits: 8, StopBits: 1

Digital 2

2xUSB External 1xUSB Internal


6 User Programmable SPCO Rated at 16A @230VAC


Supply (AC)

Universal Power Supply 85 -240V ~ 1.2A

Suply (DC)

18 – 30V (Optional)

Electronic Performance


Dual Processors with SPARTAN 3AN FPGA and ARM11 CPU

Internet Access

Via Ethernet (or optional Wi-Fi)


512MB NAND Flash plus Internal SD Card

Temperature Range

-20oC to +70oC (- 4oF to + 176oF)


Measurement Parameters Direct

Conductivity, Total Dissolved Solids (TDS), Dissolved Oxygen (DO), Salinity, pH, Temperature, Turbidity (TSS)

Measurement Parameters Indirect

Any scalable 4-20mA input from external device or sensor


Up to 20 years logging capability, additional via Cloud Storage


User Configurable Display for Graphical and Text Presentation, Colour Choice, Relays



Wifi, external GPRS modem

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