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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 *. NMi The Netherlands G. Blom FORCE Denmark J. Busk UME Turkey V. Cifci IMGC Italy G. Cignolo OMH Hungury C. Czibulka

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euromet tc flow meeting thessaloniki 2005
EUROMET TC FLOW MEETINGThessaloniki - 2005

LPGF subgroup

Review of activities during year 2004

Zoe Metaxiotou

euromet tc flow lpgf subgroup members
EUROMET TC FLOWLPGF subgroup members*

NMi The Netherlands G. Blom

FORCE Denmark J. Busk

UME Turkey V. Cifci

IMGC Italy G. Cignolo

OMH Hungury C. Czibulka

MIKES Finland S. Sillanpaa

GUM Poland M. Kusyk-Ring

BEV Austria M. Macek

PTB Germany R. Kramer / B. Mickan

CMI Czech Rep. T. Valenta

LNE France J.P. Vallet

EIM Greece Z. Metaxiotou / Convenor

*As configured within Euromet TC Flow 13.04.2004

bratislava meeting main conclusions
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
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 status1
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 status2
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 status3
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 status4
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 status5
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 status6
LPGF Current status

Provisional Project Schedule – 1st TS circulation

lpgf current status7
LPGF Current status

Project Test Program – 1st TS circulation

lpgf current status8
LPGF Current status

Schematic Diagram of Molbox 1/Molbloc System

lpgf current status9
LPGF Current status
  • Summary
  • New participants? Please, register!
  • Final comments
  • Finalization of the Project Schedule.
  • Revised technical Protocol to be submitted by C. Probert in July 2005.
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