March 2010 Hastings Product Training Flow Products Overview

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

March 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

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

March 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.

March 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)

March 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 –PSIA = PSIG Example? (for 0 O C vs. 20 O C) 2Flow= 1T 2T × 2 P 1 P ×1

March Typical Mass Flow Meter Base Shunt Sensor

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

March Constant  T Sensor 300 Series Sensor

March 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

March 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

March Questions?

March 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

March 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

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

March 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 ± 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

March 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

March 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

March 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

March 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

March 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

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

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

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

March Questions?

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