1. March 2010 Hastings Product Training Flow Products Overview

2. March 20102 Agenda Thermal mass flow basics Hastings flow product overview Product selection Typical applications

3. March 20103 Glossary of Terms Thermal mass flowmeter –Measures the mass flowrate of a fluid (liquid or gas) by measuring thermal energy transfer –Hastings only manufactures gas flowmeters Flow controller –Combines a thermal mass flowmeter with a PID loop and flow control valve

4. March 20104 Mass Flow vs. Volumetric Flow Unlike liquids, gases do not have constant volume Volumetric flow changes with: TemperaturePressure

5. March 20105 Mass Flow vs. Volumetric Flow Mass flow is independent of temperature and pressure changes. Measure the mass of the gas or number of molecules of gas True mass units can be expressed as: –lb/hr, gm/sec, etc. Can also be expressed as a standard volumetric flow unit: –SCCM, SLM, SCFM, etc.

6. March 20106 Mass Flow vs. Volumetric Flow Standard volumetric flow units look like volumetric flow units, but they are mass flow units. Standard units are referenced to STP –Standard Temperature and Pressure STP must be defined –Hastings standard temperature = 0 O C –Other temperatures are possible, but must be referenced on the order (and on quote) –Pressure reference is always 760 Torr (1 ATM)

7. March 20107 Mass Flow vs. Volumetric Flow With STP values, you can convert from mass flow to volumetric flow: Note: Temperature and Pressure are absolute –T (Kelvin) = O C + 273.15 –PSIA = PSIG + 14.696 Example? (for 0 O C vs. 20 O C) 2Flow= 1T 2T × 2 P 1 P ×1

8. March 20108 Typical Mass Flow Meter Base Shunt Sensor

9. March 20109 Typical Mass Flow Sensor This design is used in the 200 Series products. Constant temperature heater

10. March 201010 Constant  T Sensor 300 Series Sensor

11. March 201011 Flow Control Standard valves are normally closed (spring) Use PID loop to adjust valve voltage required to open the valve Orifice is a fixed variable in flow control equation THI requests Upstream and Downstream pressures to size orifice for proper flow control

12. March 201012 2-Stage Valve Pilot Flow Q p PdPd Bleed Flow Q b PuPu PbPb Main Flow Q m *Larger flows require a 2-stage valve *Used on HFC-203/303/307

13. March 201013 Questions?

14. March 201014 Flow Product Overview Ranges from: –0 - 5 SCCM to –0 - 15,000 SLM Analog and Digital models Extensive product offering to cover a wide range of applications

15. March 201015 200 Series Ranges –HFM-200/HFC-202 Min: 0 – 10 SCCM N2 Max: 0 – 25 SLM N2 –HFM-201/HFC-203 Min: 0 – 25 SLM N2 Max: 0 – 500 SLM N2 Simple / reliable design Accuracy: ± 1% FS Average response time, but very stable

16. March 201016 HFM-200 with LFE LFE: Laminar Flow Element Ranges –Up to 15,000 SLM N2 Uses HFM-200 Accuracy: ± 1% FS Low pressure drop

17. March 201017 300 Series Ranges –HFM-300/HFC-302 Min: 0 – 5 SCCM N2 Max: 0 – 25 SLM N2 –HFM-301/HFC-303 Up to 1,000 SLM N2 –HFM-305/HFC-307 Up to 2,500 SLM N2 –HFM-306 (Custom Product) Up to 8,000 SLM N2 @ ± 3% FS Accuracy: ± 1% FS* Fast response time Metal seals on HFM-300 & 305 –Kalrez valve seat on HFC-302 Foldover protection Lower dP than 200 Series * ± 0.75% for FS below 10 SLM

18. March 201018 Digital 300 Series Ranges –HFM-D-300/HFC-D-302 Up to 25 SLM N2 –HFM-D-301/HFC-D-303 Up to 1,000 SLM N2 –HFM-D-305/HFC-D-307 Up to 2,500 SLM N2 Based on 300 Series Accuracy: ± (0.2% FS + 0.5% Rdg) RS232 / RS485 ± 12, ± 15, 24 vdc Many built-in features –Totalizer, multiple gas calibration

19. March 201019 400-I Series Ranges –HFM-I-401 Up to 350 SLM N2 –HFM-I-405 Up to 2,500 SLM N2 IP65 Enclosure / Hazardous Location Approval Accuracy: Standard: ± 1% FS Polynomial: ± (0.2% FS + 0.5% Rdg) RS232 (std), RS485, or EtherNet Analog output (always present) –4-20 mA (std) –0-5 vdc, 0-10 vdc, 0-20 mA, 1-5 vdc 24 vdc or ± 15 vdc power Many built-in features –Totalizer, multiple gas calibration

20. March 201020 Power Pods / Power Supplies THPS-400 –Up to Qty(4) HFM or HFC –RS232/RS485 –Ratio control –Totalizer THPS-100 –One HFM or HFC –RS232 –2 high / 2 low setpoints Model 40 –Up to Qty(4) HFM

21. March 201021 NALL Series Ranges –Up to 15,000 SLM N2 316SS and Monel 100 O C std. / 200 O C opt. Hermetically sealed transducer option Low pressure drop version available upon request

22. March 201022 Product Selection Select flow product based on –Range –Material compatibility –Temperature / Pressure compatibility –Response time –Pressure drop considerations –Features required –Environmental considerations Do not oversell! Specify (on quote & order): range, gas, and STP reference (and upstream/downstream pressures for flow controllers) Sales tools available

23. March 201023 Typical Applications Leak testing –Castings, fabrications, filters, aircraft components, valves, building supplies, automotive components

24. March 201024 Typical Applications Flow performance testing –Respirators, aircraft components, air tools, flowmeters, gas appliances, fuel cell

25. March 201025 Typical Applications Gas blending Gas samplers / analyzers Flame spray Any application where gas measurement is critical

26. March 201026 Questions?

27. March 201027 Sales Support Tools Sizing Sheets Material Compatibility Gas Conversion Factor (GCF) Pressure Drop