R137/2012-NL1-2015.01 Rev. 1

OIML Member State The Netherlands

Number R137/2012-NL1-15.01 revision 1 Project number SO15202424 Page 1 of 4

Issuing authority NMi Certin B.V.

Person responsible: C. Oosterman

Applicant and Flow Meter Group B.V.

manufacturer Meniststraat 5c

7091 ZZ Dinxperlo

The Netherlands

Identification of the certified type A rotary piston gas meter

Type: FMR and FMR-Dual

Characteristics See page 2 and further

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

R 137-1 (2012) "Gas meters"

Accuracy class See table 2 and 3.

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.

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

C. Oosterman Head Certification Board

NMi Certin B.V.

Hugo de Grootplein 1

3314 EG Dordrecht

the Netherlands

T +31 78 6332332

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

Parties concerned can lodge objection against this decision, within six weeks after the date of submission, to the general manager of NMi (see www.nmi.nl).

OIML Member State The Netherlands

Number R137/2012-NL1-15.01 revision 1 Project number SO15202424 Page 2 of 4

The conformity was established by the results of tests and examinations provided in the associated OIML Type Evaluation Reports:

• No. NMi-14200712-02 dated 30 January 2015 that includes 36 pages.

Characteristics of the gas meter:

Table 1 gives the general characteristics of both meter types. Table 2, 3 and 4 on the following pages specify in detail the characteristics and essential parts of the FMR and FMR-Dual rotary piston gas meters. The construction of the measuring instrument is recorded in the Documentation folder no.T10372-6.

OIML Certificate of Conformity

OIML Member State The Netherlands

Number R137/2012-NL1-15.01 revision 1

Project number SO15202424

Page 3 of 4

OIML Member State The Netherlands

Number R137/2012-NL1-15.01 revision 1

Project number SO15202424

Page 4 of 4

• On the name plate of the rotary meter the cyclic volume can be given in two possible formats:

1. with two digits behind the comma as stated in table 2 and 3, or

2. with a number containing 6 significant digits. In this case a HF pulse value can be accurately derived from the spinning rotors with an optical sensor.

** The FMR-Dual can be delivered as a low pressure $ \left( P_{\mathrm{m a x}}=2 1 \mathrm{b a r} \right) $ or a high pressure $ \left( P_{\mathrm{m a x}}=1 0 1 \mathrm{b a r} \right) $ variant.

All the registers are built up as follows:

Installation conditions:

For this rotary meter specific installation conditions are not applicable.

Certificate history:

This revision replaces the previous version.