1. DXN Ultrasonic Portable Flow Meter www.bellflowsystems.co.uk

2. DXN, the portable meter for all applications www.bellflowsystems.co.uk

3. DXN Ultrasonic Portable Flow Meter Kit www.bellflowsystems.co.uk

4. Touch screen Small pipe variable separation distance sensor Hybrid Transit Time Doppler Thumb drive data download Windows XP O/S DXN Key innovations for Dynasonics www.bellflowsystems.co.uk

5. Touch Screen input Hybrid Transit Time Doppler automatically switching Windows XP O/S, software upgradeable from USB port ModBus TCP/IP, Ethernet Cable + system integrity test DXN unique innovations in market www.bellflowsystems.co.uk

6. Building Automation / Energy Mgmt. Industrial and process Water and municipal Oil & Gas Marine and offshore Key markets www.bellflowsystems.co.uk

7. DXN Portable Flow Meter - System Measurement Type: Ultrasonic transit time and Doppler Hybrid operation. Liquid thermal energy and Pipe wall thickness gauge Velocity Range: Transit Time: Bi-directional to 12 MPS, Doppler: Uni-directional to 12 MPS Flow Rate Accuracy: Transit Time: ±1% of reading, Doppler: 2% of full scale Flow Sensitivity: 0.001 MPS Repeatability: ±0.1% of reading Measurement Update: 0.1 Hz max Battery: Provides 6-9 hrs of continuous operation Display: 800 × 480 WVGA Colour Outdoor Readable Display; resistive touch screen Enclosure: Water/Dust resistant [IP 64] User Menu: Windows.NET fully integrated user menu; Multi-language Logging: 300 sites stored in 1 GB; downloads to USB jump drive www.bellflowsystems.co.uk

8. DTTSU (2 MHz) Universal Small-Pipe System 12-60.3 mm OD DTTN (1 MHz) 50mm – 2500mm OD DTTL (500 kHz), 400mm – 3050mm OD DT94 (625 kHz), Doppler 25mm to 1524mm Thickness transducer Cable Length: Transit Time: 6 meter paired coaxial cable, BNC to BNC, Doppler: 6 meters paired coaxial cable, BNC to 4-pin Diagnostics: Open, Short, Nominal (transit time only) Pipe Thickness: Dual mode transducer with 6 feet (1.8 meters) of cable (BNC ends) RTDs: 2x platinum 385, 1000 Ohm, 3-wire PVC jacketed cable; 6 meter cable standard with quick connector Pipe Surface Temperature: DTTSU/DTTN/DTTL: -40 ºC to +121 ºC, DT94 Doppler: -40 ºC to +100 ºC, DTTH option 176 ºC www.bellflowsystems.co.uk DXN Portable Flow Meter - Transducers

9. Connector: 15-pin high-density DSUB breakout box.2" quick disconnect screw terminal; 15 pin to adapter box; 1.8 meters of cable (DSUB to DSUB connectors) Breakout box Inputs/Outputs: Energy/Temperature: 2x RTDs PT1000 tab type; -85 ºC to +300 ºC measurement range Current Output: 4-20mA active/passive 1% accuracy Digital Output: Open collector, External pull-up, Rate or Total pulse user selectable Digital Input: Totalizer reset Auxiliary Inputs: Voltage input. 0 – 5V or 0 – 10V, 1% accuracy Voltage Output: 0 – 5V or 0 – 10V output voltage, 1% accuracy USB Software upgrades via downloads from Thumb Drive, Thumb drive uploads of logged data MODBUS® TCP/IP www.bellflowsystems.co.uk DXN Portable Flow Meter – In/Outputs

10. New DTTSU (2 MHz) Universal Small-Pipe System 12-60.3 mm OD www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

11. Configuration Site storage/retrieval New site configuration Operation mode Transducer type Pipe material Pipe size – integrated charts Fluid type – integrated charts Engineering units Flow ranges Save/Name the site – Full QWERTY www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

12. Diagnostics Cable/transducer integrity Signal level Signal graphics Speed of sound Plots Transit Time, Send and Receive signals, Noise and Doppler Signal Extensive measurements: Flow Stats: Signal Strength, Transit Time, Reynolds Number, AGC Level, etc. Battery stats: Time to Empty, Charge Time to Full, etc. System stats: DSP CPU %, PC Memory & CPU, Temperatures, etc. www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

13. Logging 1GByte storage space available Flow Rate + User can select up to 4 other parameters to log “Ludicrous-speed” logs flow rate measurement + 1 other measurement @ 100+Hz -- Limited to five minute bursts User selection of what to log Flow Rate Flow Accumulator Temperatures Energy/Power Fluid Sound speed Etc. Graphical view on flow meter display File storage, retrieval and download to USB Thumb Drive www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

14. What’s Inside? 150 MHz Texas Instruments TMS 320 DSP Integrated 25 MHz, 12-bit ADC Up to 200 TT readings/second PC running Windows XP Embedded as the O/S www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

15. GUI Wizards Intuitive operation Graphical instructions No need for PC or other software Multi-language capable Free graphing software for data logged information for PC also included www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

16. Smart Li-ion Battery PC-Like Power Safe Charging (~ 6 hours to recharge) Safe Discharging Temperature monitoring Battery life gauge Capacity: Screen On: ~6 Hours Screen Low: ~8 Hours Screen Off: ~9 Hours www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

17. Standard Accessories Carrying case Shoulder bag I/O breakout box AC/DC converter for charging/operation 12 volt car power adapter www.bellflowsystems.co.uk DXN Portable Ultrasonic Flow Meter

18. Ultrasonic Flow: Principles of Operation Transit Time Doppler Installation www.bellflowsystems.co.uk Measurement Technology Overview

19. Transit time is also known as “Time of Flight” technology. Sound pulses are transmitted upstream and downstream between two elements mounted on the outside of the pipe. The two elements (transducers) alternate function between send and receive. V-Mode Configuration www.bellflowsystems.co.uk Transit Time Technology

20. Transit Time Pipe cut through side view Steel Transducers Plastic Line represents path of sound wave Liquid Typical sound path for a TT clamp on ultrasonic meter www.bellflowsystems.co.uk

21. Measurement Summary  Dynasonics transit time meters generate and transmit a synthesized waveform in both the upstream and downstream directions; approximately 3x/second.  After the waveform is transmitted, a precision delay is induced; the length of the delay is based on parameters such as pipe size and pipe wall thickness.  The upstream and downstream data are collected and compared with one another to determine difference time ( Δt ). www.bellflowsystems.co.uk

22. Transit Time Installation Three Mounting Modes for Series TFX Transducers W-ModeV-ModeZ-Mode Mount so that wires are in opposition www.bellflowsystems.co.uk

23. Transit Time Installation Place the second transducer at the proper calculated spacing and make small adjustments to achieve Signal Strength. Clamp the transducer at this position. www.bellflowsystems.co.uk

24. On very large pipes, small adjustments both lineally and radially may be required to achieve adequate signal strength (typically greater than 5). Also, slight twisting of the transducers can direct the sound. Note: higher signal strength does NOT correspond with higher accuracy www.bellflowsystems.co.uk Transit Time Installation

25. Doppler Ultrasonic Technology Ultrasonic frequencies in the range of 500,000 to 1,000,000 Hertz (500 kHz to 1 MHz) are generated by the flow meter and transmitted through the pipe wall into the liquid. The part of the flow meter that contacts the pipe is called the transducer. www.bellflowsystems.co.uk

26. Option 1: 180° is usually optimal, start with this set-up Option 2: Side-by-side is appropriate for larger pipes, very high solids content (>10000 ppm) or when signal strength is very low Transducer cables extend in the same direction as flow Doppler Installation www.bellflowsystems.co.uk

27. Potential Complications Variable Frequency Drives (VFDs) are in use at the majority of water and wastewater treatment plants and lifting stations. If installed without proper grounds and shields, VFDs may output frequencies that will interfere with proper operation of Doppler flow meters. VFD interference typically will cause erroneous readings – that are constant – to be shown on the meter’s display and outputs www.bellflowsystems.co.uk Doppler Installation

28. Thank you www.bellflowsystems.co.uk +44 (0)1280 817304 sales@bellflowsystems.co.uk www.bellflowsystems.co.uk