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1. Welcome Bienvenue Willkommen Bienvenido Добро пожаловать ようこそ 歡迎

2. ESTA aM&TConference Future Trends - Clamp-On Flow Metering • The Market • Technology & Operating Principals • Typical Configurations • Applications

3. Clamp-On flow metering The Market Portable Ultrasonic Meters; The only realistic option for temporary applications One unit can measure any pipe diameter. Non intrusive No system downtime Dedicated Meters; Non intrusive Low cost. Particularly on large pipes No moving parts Simple low cost installation No down time for maintenance No Pressure Drop - Energy efficient! Result is Low lifetime cost • The markets for Clamp-On Ultrasonic flow metering are established • Significant potential for Growth • Major cost savings over technologies requiring in-line installation • Up to 90 percent with additional installation & operational benefits!

4. Clamp-On flow metering The Theory There are 2 Ultrasonic technologies used- ‘Time of Flight’ and ‘Doppler’ • Time of Flight is suitable for clean liquids < 2% particles or contaminates • Doppler is only suitable for contaminated or aerated liquids.

5. Clamp-On flow metering Theory - Time of Flight Sensor Block A B Liquid Flow Pipe wall • Time of Flight Ultrasonic Meters measure the Transit Time of a beam of Ultrasound • Flow velocity is calculated from the difference in time taken for the sound to travel either upstream against the flow or downstream. • This time difference is extremely small for example 30 nanoseconds (30 x 10-9 sec) for a flow of 1 metre/sec in a 100mm pipe. • In order to achieve accuracy particularly on smaller pipes with very low flows it is necessary to have a system that will resolve time differences of less than 0.5 nanosecond. Nominal accuracy for most Clamp-On systems is between 1-3% of flow rate above 0.3metres/sec.

6. Clamp-On flow metering Theory - Doppler Sensor Block Liquid Flow Pipe wall • When ultrasound hits a moving particle or gas bubble The reflected sound can be detected and the frequency shift measured. • The frequency change is proportional to flow velocity which is converted to volumetric flow rate by multiplying by the cross sectional area of the pipe.

7. Clamp-On flow metering Typical Configurations Dedicated Clamp-On Flow and Heat Meters Time of Flight meters for clean liquids Doppler portable meters for dirty liquids Mains, 24V DC, Battery Powered aM&T and BEMS compatible LCD or Graphics Displays Current, Pulse, RS 232/485 outputs Blind units pre-programmed for fit and forget applications Prices ranging from £800 to £3000. But Technology is driving prices down! Portable Clamp-on instruments Time of Flight meters for clean liquids Doppler portable meters for dirty liquids LCD or Graphics Displays Battery Powered Data Logging Portable meters range in price from £600- £6000 depending on facilities offered and the level of performance. But Technology is driving prices down! Portable and Dedicated or Fixed Clamp-On Instruments and Meters for Flow Measurement

8. Clamp-On flow metering Typical Configurations

9. Clamp-On flow metering Typical Configurations Dedicated or Fixed Meters

10. Clamp-On flow meteringApplications Chilled Water/LPHW/MTHW flow metering Thermal energy flow measurements when combined with diff temp measurement System commissioning Temporary monitoring (Trend/Consumption) Flow confirmation Effluent discharge measurements Plant Diagnostics & Leak detection Portable and Dedicated Instruments and Meters for the following areas

11. Improving energy efficiency using Clamp-on meters • The low cost installation of a clamp-on meters to monitor flow and to identify instantly any change in performance a significant step towards ensuring energy efficient operation. • Portable meters enable fast accurate energy audits. • System balancing and defective in-line meter replacement can be performed without draining down. • Leak Detection and water wastage can be simply tracked. • Logging the use of Heat or coolth process and building services can now be achieved using clamp-on heat meters, driving down the cost of secondary metering.

12. Case Study- Pump Efficiency • A Micronics Portaflow 300 was used to measure the flow of a 75kw pump that was operating into a control valve on the discharge side that was only 20% open. • Obviously the pump was oversized and working inefficiently and was calculated that 66% of energy used was wasted. • The pump was replaced with an 11kW unit at a capital cost of £1500. • Energy costs were reduced from £5698 to £926 per year giving a payback period of approximately 4 months.

13. Case Study- Luton Borough Council • Example of cost savings that can be achieved by selecting a clamp-on meter instead of a conventional inline meter for a Building Services retrofit application. • A Borough Council now required to manage schools within its area was updating its plant monitoring in line with Part L2 of the Building Regulations. • Heat delivered from a school central boiler house installation was due to be metered and quotations to supply and install Heat meters were requested from several companies offering in-line meters. • The adoption of Clamp-On ultrasonic Heat Meters offered the Council the opportunity to save 40% of the cost of a similar in-line installation. • Reduced disruption, no draining of pipe work, no residual venting problems, easier maintenance, and no pressure drop were all additional benefits that could not be matched by using an in-line meter.

14. Conclusions There is considerable scope for an increase in the Trend of use of Clamp-On Metering Products within Building Services and Process Industries including: • Chilled Water/LPHW/MTHW flow metering • Thermal energy flow measurements when combined with differential temperature measurement • System commissioning • Temporary monitoring (Trend/Consumption logging) • Flow confirmation • Effluent discharge measurements • Plant Diagnostics & Leak detection Clamp-On metering offers - Low Cost installation, Minimum Disruption and Plant down time with Low Life Time Costs Thank You - Questions please