1. www.hvac.vn Flow Technology Overview 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 Brief overview of flow technology Flow switches Flow transmitters Differential pressure flow Sight Flow indicators Define the scope of applications Define the correct solution Competition

3. www.hvac.vn Flow Switches Paddle or vane sensors Easy to install Magnetic linkages Shuttle/piston Lower and specific set points Thermal dispersion No moving parts to jam

4. www.hvac.vn Flow Switch Application

5. www.hvac.vn Flow Transmitters Paddlewheel inline/adjustable Electromagnetic Ultrasonic

6. www.hvac.vn Flow Transmitter Application

7. www.hvac.vn Differential Pressure Flow Liquid in-line (averaging pitot tube) Insertion type DP liquid flow measurement Orifice plate Pressure drop across restriction

8. www.hvac.vn Differential Pressure Measurement

9. www.hvac.vn Orifice Plate Differential Pressure Measurement

10. www.hvac.vn Sight Flow Indicators Sight Flow indicators Pump proving applications Boiler systems Visual indications Sight windows Easy to install Provides visual indication for pipes and tanks

11. www.hvac.vn Sight Flow Indicator Applications

12. 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.