Euromet tc flow meeting thessaloniki 2005
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EUROMET TC FLOW MEETING Thessaloniki - 2005. LPGF subgroup Review of activities during year 2004 Zoe Metaxiotou. EUROMET TC FLOW LPGF subgroup members *. NMiThe NetherlandsG. Blom FORCEDenmarkJ. Busk UMETurkeyV. Cifci IMGCItalyG. Cignolo OMHHunguryC. Czibulka

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EUROMET TC FLOW MEETING Thessaloniki - 2005

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EUROMET TC FLOW MEETINGThessaloniki - 2005

LPGF subgroup

Review of activities during year 2004

Zoe Metaxiotou


EUROMET TC FLOWLPGF subgroup members*

NMiThe NetherlandsG. Blom

FORCEDenmarkJ. Busk

UMETurkeyV. Cifci

IMGCItalyG. Cignolo

OMHHunguryC. Czibulka

MIKESFinlandS. Sillanpaa

GUMPolandM. Kusyk-Ring

BEVAustriaM. Macek

PTBGermanyR. Kramer / B. Mickan

CMICzech Rep.T. Valenta

LNEFranceJ.P. Vallet

EIMGreeceZ. Metaxiotou / Convenor

*As configured within Euromet TC Flow 13.04.2004


Bratislava meeting – Main conclusions

  • Several CMC entries need supporting evidence for claimed capabilities in the field of low pressure gas flow.

  • Gas flow measurement at low flow rates (below 30 l/min) is an area of major metrological interest where no extended intercomparisons within Euromet Flow group have taken place.


LPGF Current status

  • I. BIPM CMC database - Questions

  • Are claimed capabilities as depicted in the database fully supported?

  • If NOT why?

    • New lab, equipment, personnel?

    • Supporting evidence “too old”?

  • Has supporting evidence “expiration date”? If YES:

    • Criteria?

    • Agreement upon realistic rules?


LPGF Current status

  • I. BIPM CMC database - What next?

  • Revision – When?

    • Each LPGF subgroup member creates an up-to-date list of the submitted entries that need supporting evidence.

    • LPGF subgroup convenor summarizes the findings and starts a discussion about actions to be taken.

  • Main Target

    • By the end of 2005 reach an agreement about certain actions that will provide the basis for scientific support for all claimed capabilities within LPGF field.


LPGF Current status

  • II. New Proposed Project Registered as Euromet No 806

  • Discussions started in Bratislava last March.

  • NEL offered a Molbox1/Molbloc system as TS.

  • Comments received from members of LPGF subgroup and other Euromet members contributed to the formulation of a new proposal which has been registered as Euromet Project No 806.

  • Pilot Labs: NEL (UK), EIM (Greece)

  • Organization: Z. Metaxiotou (EIM), Cliff Probert (NEL)

  • Assisting Lab: M. Van der Beek (NMi)


LPGF Current status

  • Brief Technical Description

    • Transfer package consists (basically) of:

      • 2 Molbloc flow meters

      • 2 Mass flow controllers

    • Test gases:

      • Nitrogen 99,998 % (1st circulation)

      • Air from lab supply (2nd circulation)

    • Test flow rates:

      • 2.0 – 20 mg/s (0.1 – 1 l/min) – Molbloc A

      • 65 – 650 mg/s (3.0 – 30 l/min) – Molbloc B


LPGF Current status

  • Current Project Status

  • Eight (8) participants up to date(Others are invited to join!)

    • NEL (UK) – Cliff Probert

    • EIM (Greece) – Zoe Metaxiotou

    • NMi (The Netherlands) – M. Van der Beek / G. Blom

    • IMGC (Italy) – G. Cignolo

    • MIKES (Finland) – S. Sillampaa

    • METAS (Switzerland) – Bernhard Niederhauser

    • PTB (Germany) – R. Kramer / B. Mickan

    • CMZ (Czech Republic) – J. Tesar / Z. Krajicek


LPGF Current status

  • Current Project Status

  • A detailed draft technical protocol has been prepared by NEL and circulated among all LPGF subgroup members.

  • A provisional project schedule for the 1st circulation of the TS has been proposed and is subject to discussion.

  • The revised technical protocol will be prepared after the Euromet meeting.


LPGF Current status

Provisional Project Schedule – 1st TS circulation


LPGF Current status

Project Test Program – 1st TS circulation


LPGF Current status

Schematic Diagram of Molbox 1/Molbloc System


LPGF Current status

  • Summary

  • New participants? Please, register!

  • Final comments

    • Send them to Cliff Probert (NEL) [email protected] or Zoe Metaxiotou (EIM), [email protected]

    • Dead line for replies: April 1st, 2005

  • Finalization of the Project Schedule.

  • Revised technical Protocol to be submitted by C. Probert in July 2005.


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