1. www.hvac.vn Electromagnetic Flowmeters The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes. Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2014 Dwyer Instruments, Inc.

2. www.hvac.vn Overview Principles of Operation Types of Electromagnetic Flow Sensors Insertion In-line Installation Accessories Rate and Totalizers Analog Transmission Target Markets Application Photos and Uses

3. www.hvac.vn Overview Insertion Adjustable IEFS Fixed EFS2 In-line Small LOFM & MFS/MFS2 Large FLMG MFS FLMG MFS2 LOFM IEFS EFS2

4. www.hvac.vn Principle of Operation Faraday’s Law Conductive liquid moving through a magnetic field produces a current

5. www.hvac.vn Principle of Operation Current is proportional to velocity of the liquid

6. www.hvac.vn Principle of Operation A magnetic field is directed through the conductive liquid Voltage generated is proportional to the movement of the flowing liquid

7. www.hvac.vn IEFS - Introduction Adjustable, insertion electromagnetic flow meter Designed for pipe sizes from 3 to 48˝ ( 76 to 1219 mm) Comes in different materials Stainless steel and brass Purchase by size and material

8. www.hvac.vn IEFS - Specifications Service: Compatible clean or dirty non-coating, conductive liquids Range: 0.28 to 20 ft/s (0.08 to 6.09 m/s) Accuracy: ±1% FS Output: Current sinking, square wave pulse, opto-isolated, 550 Hz @ 20 ft/s Enclosure Rating: NEMA 4X (IP66)

9. www.hvac.vn IEFS - Features Field adjustability allows for quick ship and installation time Brass and stainless steel materials of construction Versatility for higher temperature and pressures and varying fluids Reverse flow output option Allows meter to indicate flow in two directions, forward or reverse

10. www.hvac.vn IEFS - Features NPT or Hot-Tap process connection Hot-Tap option allows for service of system without draining process fluid

11. www.hvac.vn EFS2 - Introduction Electromagnetic flow meter Fixed insertion depth 1 to 12” (25 to 305 mm) PVC, Brass, and Stainless Steel

12. www.hvac.vn EFS2 - Specifications Service: Compatible clean or dirty non-coating, conductive liquids Range: 0.28 to 20 ft/s (0.08 to 6.09 m/s) Accuracy: ±1% FS Output: Current sinking, square wave pulse, opto-isolated, 550 Hz @ 20 ft/s Enclosure Rating: NEMA 4X (IP66)

13. www.hvac.vn EFS2 - Features Fixed depth 3 models allow for range of pipe sizes 1 to 3” (25 to 76 mm) 4 to 10” (102 to 254 mm) 12” (305 mm) PVC, Brass, and Stainless Steel Materials of Construction Versatility for higher temperature and pressures Higher chemical compatibility for varying fluids Reverse flow output option Allows meter to indicate flow in two directions, forward or reverse

14. www.hvac.vn EFF Fittings Series EFF fittings and tees required for installation Stainless Steel, Bronze, and PVC fittings and tees allow for installation in virtually all applications

15. www.hvac.vn Advantages and Disadvantages IEFS2 – Adjustable NPT and Hot Tap Mount One model for pipes 3 to 24” (76 to 607 mm) Higher Cost EFS2 - Fixed Lower Cost Operational in pipes down to 1” (25 mm) Require additional mounting components

16. www.hvac.vn LOFM - Introduction In-line, small pipe diameter electromagnetic flow sensor PVDF wetted material 3/8” (9.5 mm) & ¾” (19 mm)

17. www.hvac.vn LOFM - Specifications Service: Compatible clean or dirty non-coating, conductive liquids Range: 0.03 to 20 GPM (0.01 to 1.3 LPS) Accuracy: +1% of reading Output: Current sinking, square wave pulse, opto-isolated, 30 VDC @ 5 mA max. and 4 to 20 mA Enclosure Rating: NEMA 4X (IP66)

18. www.hvac.vn LOFM - Features Corrosion resistant PVDF material No moving parts Non obstructive flow Can accurately measure flow rates as low as 0.03 GPM (.002 LPS)

19. www.hvac.vn MFS & MFS2 - Introduction In-line electromagnetic flowmeter For small pipe sizes MFS 316 SS body ½ to 1” (13 to 25 mm) MFS2 plastic body ½ to 1-1/4” (13 to 32 mm) MFS MFS2

20. www.hvac.vn MFS & MFS2 - Specifications Service: Water and other conductive liquids Accuracy: ±2% of reading Output: Frequency: Square-wave, NPN Analog: 4 to 20 mA Enclosure Rating: NEMA 4 (IP65) MFS MFS2

21. www.hvac.vn MFS & MFS2 – Features Compact design Low cost No moving parts Ideal for lower flows Lower pipe sizes MFS MFS2

22. www.hvac.vn FLMG - Introduction Inline electromagnetic flowmeter Transmits and displays flow rate and total 150 # ANSI flange 4, 6, 8, 10 in (102, 153,203, 254 mm)

23. www.hvac.vn FLMG - Specifications Service: Compatible non-coating conductive liquids Wetted Materials: Liner: Dual durometer rubber Accuracy: ±1% Output: Current sinking square wave pulse, opto- isolated Battery Life: 2 months with power failure; 10 years with power Enclosure Rating: NEMA 4X (IP66)

24. www.hvac.vn FLMG - Features No Moving Parts Unaffected by potential debris in flow such as sand Manufactured to customer specification Model designed to mount in 4 to 10” (102 to 254 mm) lines No adjusting sensor height to center of flow, bolt inline an go Larger magnetic field Requires fewer upstream and downstream pipe diameters

25. www.hvac.vn FLMG - Features NEMA 4X (IP66) rated housing Allows for use both indoor and outdoor Flow outputs Rate and flow totalizing standard Internal battery backup standard Allows unit to continue working if power failure/outage occurs

26. www.hvac.vn Advantages and Disadvantages In-line vs. Insertion Built to specific pipe size, one size does not fit all Flow-thru design allows for minimal/no pressure drop Can be used in applications with solids and debris in flow stream Higher cost than insertion flow sensors

27. www.hvac.vn Installation Accessories RTI Rate/Total Indicator BAT Blind Analog Transmitter

28. www.hvac.vn RTI - Features Indicator and transmitter accessory for IEFS, EFS2, and FLMG Takes pulse input from flow sensor and converts signal to display flow rate and total Displays flow rate and flow total on LCD display Provides linear 4 to 20mA output of flow NEMA 4X (IP 66) rating for indoor and outdoor use

29. www.hvac.vn RTI - Features Mounts to wall, flow sensor, or local panel

30. www.hvac.vn BAT - Features Transmitter accessory for IEFS, EFS2, and FLMG No Display, blind unit Takes pulse input from flow sensor and converts signal to flow rate signal Output signal linear 4 to 20mA output of flow NEMA 4X (IP 66) rating for indoor and outdoor use

31. www.hvac.vn BAT - Features Mounts to wall or Flow Sensor

32. www.hvac.vn When not to recommend electromagnetic flow sensors Applications with fluids with low conductivity De-ionized water or boiler feed water Low conductivity can cause the meter to turn off and indicate zero flow Hydrocarbon and gas applications Hydrocarbons and gases are non conductive and can not be measured

33. www.hvac.vn Applications Agriculture Irrigation Sprayers and Spreaders Fertigation Building Automation HVAC Systems Municipalities Water and Wastewater Industrial Process Chemical Metering Pumps

34. www.hvac.vn Agriculture Irrigation Used for measuring and monitoring water consumed during growing season on pivot systems Sprayers Used for monitoring chemical sprayed on crops during growing season Spreaders Used for monitoring flow of organic materials, including manure, used as fertilizer

35. www.hvac.vn Building Automation Water audits and consumption Used to verify water intake to building, verified against city municipality billing LEED Used to verify water consumption for LEED credits in buildings for water conservation

36. www.hvac.vn Municipalities Wastewater Facilities Used to measure treated and untreated sewage Used to measure process water Used to measure chemical flow for sewage treatment Water Facilities Used for measuring flow in water mains Used for early indication of water main break

37. www.hvac.vn Irrigation Magnetic Flowmeter used for flow measurement in Pivot Irrigation system

38. www.hvac.vn Spreader Magnetic Flowmeter used in manure spreading system

39. www.hvac.vn Fertigation Golf course groundwater monitoring and fertilizing

40. www.hvac.vn HVAC System Magnetic Flowmeter used for billing in a heating system

41. www.hvac.vn Water Magnetic Flowmeter used in pump house for groundwater monitoring

42. www.hvac.vn Wastewater Gravity-fed waste pumping facility

43. www.hvac.vn Industrial Magnetic Flowmeter used in water park pump and treat

44. www.hvac.vn The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes. Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2014 Dwyer Instruments, Inc.