Circulation of Pond Eng. Ar Triple Point System K-38

Project Description

Many EURAMET NMIs recently purchased new Ar Triple Point (TP) systems. In the TC-T Meeting 2013, a number of NMIs (DTI, CMI, GUM, INTiBS, IPQ, LNE-INM, SMD and VSL) expressed their interest in an Ar TP comparison based on the circulation of Pond Eng. Ar TP system K-38. It was decided that, before starting such comparison, four NMIs (CMI, GUM, SMD and VSL) will investigate the feasibility of such comparison by preliminarily circulating the K-38 system among their labs. Such preliminary investigation will allow to test the potentiality of this comparison scheme (circulation of the K-38 among all participants) before launching the comparison.

Progress Report 2024-012-04

The use of the Pond Eng. Ar Triple Point System was abandoned. VSL and SMD are exploring the possibility of using a INM cell as transfer standard. Following an initial comparison between the two laboratories a choice will be made between closing the project or continuing with the INM cell.

Matthijs R. Panman has taken over the coordination of the project fom Andrea Peruzzi.

Progress Report 2019-04-01

During the TC-T meeting 2014, it was decided to leave in stand-by mode this project, waiting for the completion of the EURAMET.T-K9 comparison. At the end of the EURAMET.T-K9 comparison, in light of its results, we will decide whether to re-vitalize this project or close it down.

Progress Report 2018-02-28

We expect measurements to be finished by the end of this year, report before March 2018.

Progress Report 2017-04-20

This project is kept in stand-by until the EURAMET.T-K9 comparison is completed. No progress in the past year.

Progress Report 2017-04-06

As agreed during the TC-T meeting 2014, this project is left in sleeping mode waiting for the completion of the EURAMET.T-K9 comparison.

Progress Report 2016-02-03

As agreed during the TC-T meeting 2014, this project is left in sleeping mode waiting for the completion of the EURAMET.T-K9 comparison

Progress Report 2015-02-09

In 2014 the main residual problem with VSL Pond Eng. System K-38 was solved (the source of spikes was identified in the remote monitoring through the IEEE).
During the last TC-T meeting (April 2014), it was decided to leave in stand-by mode this project, waiting for the completion of the EURAMET.T-K9 comparison. At the end of the EURAMET.T-K9 comparison, in light of its results, we will decide whether to re-vitalize this project or close it down.