R137/2012-A-NL1-20.10 Rev. 2

OIML Member State The Netherlands

Number R137/2012-A-NL1-20.10 revision 2 Project number 2587901 Page 1 of 5

Issuing authority

Manufacturer

NMi Certin B.V.

Person responsible: M.Ph.D. Schmidt

MeteRSit Viale dell'Industria, 31 35129 Padova Italy

Identification of the certified type

A thermal-mass flow gas meter Type: x485xxx

Characteristics

See page 2 and further

This OIML Certificate is issued under scheme A

This Certificate attests the conformity of the above identified type (represented by the sample(s) identified in the OIML Type Evaluation Report) with the requirements of the following Recommendation of the International Organization of Legal Metrology (OIML):

R 137-1 (2012) "Gas meters"

Accuracy class 1,5

This Certificate relates only to the metrological and technical characteristics of the type of measuring instrument covered by the relevant OIML International Recommendation identified above. This Certificate does not bestow any form of legal international approval.

This certificate and supporting reports comply with the requirements of OIML-CS-PD-07 clause 6.2.

Important note: Apart from the mention of the Certificate's reference number and the name of the OIML Member State in which the Certificate was issued, partial quotation of the Certificate and of the associated OIML Type Evaluation Report(s) is not permitted, although either may be reproduced in full.

Issuing Authority

NMi Certin B.V., OIML Issuing Authority NL1 7 October 2021

Certification Board

NMi Certin B.V.

Thijsseweg 11

2629 JA Delft

The Netherlands

T +31 88 636 2332

certin@nmi.nl

www.nmi.nl

This document is issued under the provision that no liability is accepted and that the applicant shall indemnify third-party liability.

The notification of NMi Certin B.V. as Issuing Authority can be verified at www.oiml.org

Reproduction of the complete document only is permitted.

This document is digitally signed and sealed. The digital signature can be verified in the blue ribbon at the top of the electronic version of this certificate.

Number R137/2012-A-NL1-20.10 revision 2 Project number 2587901 Page 2 of 5

The conformity was established by the results of tests and examinations provided in the associated report(s):

• No. NMi-15200299-02 dated 15 March 2016 that includes 45 pages;

• No. NMi-16200387-02 dated 17 October 2016 that includes 61 pages.

• No. NMi-SO16204082-01 dated 10 November 2016 that includes 15 pages;

• No. NMi-16200852-01 dated 8 May 2017 that includes 13 pages;

• No. NMi-1901756-02 dated 23 March 2018 that includes 12 pages;

• No. NMi-1900623-02 dated 29 May 2017 that includes 17 pages;

• No. NMi-1901029-02 dated 11 October 2017 that includes 14 pages;

• No. NMi-1901403-02 dated 1 February 2018 that includes 21 pages;

• No. NMi-1902208-02 dated 25 July 2018 that includes 14 pages;

• No. NMi-2268368-02 dated 6 December 2018 that includes 10 pages;

• No. NMi-2327085-02 dated 13 June 2019 that includes 3 pages;

• No. NMi-1902287-02 dated 17 February 2020 that includes 18 pages;

• No. NMi-2188742-02 dated 3 June 2020 that includes 16 pages;

• No. NMi-2364857-02 dated 23 November 2020 that includes 26 pages;

• No. NMi-2477858-02 dated 2 April 2021 that includes 19 pages;

• No. NMi-2548615-01 dated 1 July 2021 that includes 17 pages;

• No. NMi-2587901-02 dated 7 October 2021 that includes 16 pages.

Characteristics of the measuring instrument

In Table 1 the general characteristics of the measuring instrument are presented.

Table 2 gives an overview of the general characteristics of the family of instruments.

OIML Member State The Netherlands

Number R137/2012-A-NL1-20.10 revision 2

Project number 2587901

Page 3 of 5

OIML Certificate

OIML Member State The Netherlands

Number R137/2012-A-NL1-20.10 revision 2

Project number 2587901

Page 4 of 5

Number R137/2012-A-NL1-20.10 revision 2 Project number 2587901 Page 5 of 5

Certificate history:

This revision replaces the previous version.