ISA/ANSI SP76.00.02-2002 Introduction, New Proposals...

Set Your Sails For South Shore HarborThe 56th Annual Symposium of the Analysis DivisionLeague City, Texas, USA; 10-14 April 2011

ISA/ANSI SP76.00.02-2002 Introduction, New Proposals,

Myths & Value

Steve Doe, Parker Hannifin

Gary Astle, Circor Tech

Doug Nordstrom, Swagelok

AD 2011: Analysis Division SymposiumLeague City, TX, USA; 11 - 14 April 2011

Slide 2

Agenda

• Terminology

• SP76.00.02-2002 Standard Introduction

• Proposed SP76 Standard Updates

• Myths

• Gen-1 Value Delivered


Slide 3

Terminology / Synonyms

• ISA/ANSI SP76.00.02-2002

– Interface standard released in 2002

– Also know as “SP76”

• Modular Sample System

– Generic term describing the technology

• NeSSI™ (New Sample / Sensor Initiative)

– Technology “Brand” owned by University of Washington


Slide 4

SP76 Standard Introduction


Slide 5

Nominal 2.25” Footprint


Efficiently Simple

Nominal 1.5” Footprint

Defining the Bottom of a Functional Device

Mounting Bolt Holes

Potential Flowpath

Ports


Slide 6


Highly Flexible

Nominal 1.5” Footprint x2

Nominal 1.5” Footprint x2x2

Providing Device Designers Optional Footprints


Slide 7

SP76 Standard Value

• Provides an agreed-upon, understandable & accessible information database that benefits global Sample Handling System Stakeholders

Swagelok Circor Parker

• Leaves room beyond the agreed-upon elements of the standard for manufacturers to compete in the marketplace


Slide 8

SP76 Proposed Updates

• ISA re-opens a standard for review after 5 years of initial release of a standard

• A focus group has been working on several revisions since 2007

• Parker proposes inclusion of the clocking pin as an optioninto the reaffirmed standard

Proposal 1: Alignment pin receptacle added to device footprint for safety and reference point


Slide 9



Proposal 2:

Develop an Analytical Symbol library for devices used specifically in SP76 process analytical schematics, because…


Slide 10



…schematic variety isn’t the spice of life when it comes to schematics!P

60 micronFast Loop

filter

60 micronFast Loop

filter

25 micronfilter

25 micronfilter

A

R-MAX R-2

MFI

PressureGauge

0-100 psi

Rotameter1-3 ml/min


Slide 11



A block around the symbol represents an SP76 device with agreed upon geometry , functionality

and nomenclature

Symbol Library: How it would work:


Slide 12


A “Porting Legend” would accompany the device symbol

Symbol Library: How it would work:


Slide 13


Porting Legend: Why??

• Conventional wisdom leads all three manufacturers to define the center port as inlet and offset as outlet

• Providing end users with field plug and play freedom!

Parker SwagelokCircor


Slide 14


Porting Legend: Why??

However, what if a competitive performance advantage can be achieved by porting differently?

Both SP76 Compliant, but is it still “Plug & Play” ?

Users deserve to know how devices are ported!


Slide 15

SP76 Proposed Updates Summary:

Start with a symbol:• To describe in real-

time how a system is operating!


Slide 16

Myths: Fact or Fiction?

Myth #1: The flowpath hole is too small!

The standard specifies a .110” ID (2.8mm) maximum flowpath hole

Conventionally plumbed systems are normally ¼” x .035” wall, resulting in a .180” ID or 1/8” x .028” wall, resulting in a .069” ID

.180” ID .110” ID .069” ID

.254”2 .0094”2 .0011”2

Hole Cross Section Areas


Slide 17


Myth #1Facts:1. Sample Systems are commonly populated with needle

valves to control flow and /or restricted orifices to control pressure. Such restrictions result in cross sections much smaller than .0094”2 .

2. Rule of Thumb: dozens of modular sample systems are in Low Sulfur Diesel systems flowing at 2-3SLPM.

3. Viscosity & Temperature Matters; obviously modular systems are not for all applications

4. Numerous papers have been presented regarding SP76 hole sizes; most notable can be found on the CPAC Website:

www.cpac.washington.edu/NeSSI/19_IFPAC.../Swagelok_Tony_Bio.ppt


Slide 18


Myth #2: I Can’t followthe flowpaths!

A Very Fair Statement …


Slide 19


Myth #2: Fact

“Tight Design”

“Intuitive Design”

It’s a matter of design; what’s most important to you?


Slide 20


Myth #3: It’s Not Mainstream


Slide 21


Myth #3: Fact


Slide 22

Gen-1 Value, #3

Sounds Good, but…


Slide 23

Gen-1 Value, #3

…isn’t tighter better?

O-Rings are very forgiving!


Slide 24

Gen-1 Value, #2

Do we still use outdated tools?

When o-ring seal connectors are

available?

Why stop here?


Slide 25

Gen-1 Value, #1

Conventional Schematic


Slide 26

Gen-1 Value, #1

Conventional Schematic Gets Built

Sam builds according to his best judgment based on the schematic in January 2004

Joe builds according to his best judgment based on the same schematic in July, 2010

Will both systems be built indentically??


Slide 27

Gen-1 Value, #1

The unique system design also maintains its own top level part number if purchased as an assembly from your supplier

Modular system“schematic” drawings are both a schematic as well as a physical representation of the system.


Slide 28

Gen-1 Value, #1

The unique system design also maintains its own top level part number if purchased as an assembly from your supplier

Modular system“schematic” drawings are both a schematic as well as a physical representation of the system.


Slide 29

Gen-1 DONE!

Thank You!

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