R137/2012-A-NL1-25.04 Rev. 0
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-25.04 revision 0
Project number 3517603
Page 1 of 3
Issuing authority NMi Certin B.V. Person responsible: M.Ph.D. Schmidt
Applicant Landis + Gyr AG The Landing, Trident Business Park, Styal Road, Manchester, M22 5XB United Kingdom
Manufacturer Landis + Gyr AE 78th km National Road, Athens-Corinth, 20100 Isthmus of Corinth Greece
Identification of the certified type
An Ultrasonic gas meter
Manufacturers mark: Landis + Gyr AG Type: G480 7B3 E10xx2x 63
Characteristics See following page(s)
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 1 September 2025
Certification Board
This document is issued under the provision that no liability is accepted and that the applicant shall indemnify third-party liability.
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.
OIML Certificate
Number R137/2012-A-NL1-25.04 revision 0
Project number 3517603
Page 2 of 3
The conformity was established by the results of tests and examinations provided in the associated report(s):
No. NMi-3517603-01 dated 11 November 2024 that includes 11 pages;
No. NMi-3517603-02 dated 1 September 2025 that includes 51 pages.
Characteristics of the measuring instrument
In Table 1 the general characteristics of the measuring instrument are presented.
In Table 2 the characteristics of the family of instruments are presented.
The construction of the measuring instrument is recorded in the Documentation folder no. T13064-01
Table 1 General characteristics
| Minimum-maximum flow rate | 40-10000L/hour | |
| Environmental classes | M1/E2 | |
| Ambient temperature range | -10-+55℃;condensing humidity | |
| Gas temperature range | -10-+55℃ | |
| Orientation | connection ports vertical | |
| Intended for the measurement of | Natural gas typesH,L and E,with a Gross Wobbe Index between39,1MJ/m3and54,7MJ/m3at15℃and1,01325bar | |
| Software identification Metrology | Version number | Checksum |
| V40.33 | 6F5697AE | |
| Software identification Application | V16.00.01.50 | DB9A08AA |
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-25.04 revision 0 Project number 3517603
Table 2 General characteristics of the family of instruments
Page 3 of 3
| Meter size | E10 |
| Minimum flow rate $ Q_{\min} $ ($ m^{3}/h $) | 0,04 |
| Transitional flow rate $ Q_{t} $ ($ m^{3}/h $) | 0,6 |
| Maximum flow rate $ Q_{\max} $ ($ m^{3}/h $) | 10 |
| Overload flow rate $ Q_{r} $ ($ m^{3}/h $) | 12 |
| Maximum working pressure $ p_{\max} $ (bar a) | 0,700 |
| Indicating range ($ m^{3} $) | xxxx,xxx |
| Verification scale interval ($ m^{3} $) | 0,001 |
| Connection size | 1" BS74620LT10LTSprague #1A |
Certificate history:
This revision replaces the previous version.
| Revision | Date | Description of the modification |
| Initial | 1 September 2025 | Initial issue |