OIML Issuing Authority
Name: Tifernogas S.r.l.
Address: Via R. Morandi 44/d, 06012 Città di Castello (PG), Italy
Person responsible: Paolo Tafani Alunno
Applicant
Name: ZENNER Metering Technology (Shanghai) Ltd.
Address: No. 800 Songda Road, Qingpu District
Shanghai-P.R. China
Manufacturer
Name: ZENNER Metering Technology (Shanghai) Ltd.
Address: No. 800 Songda Road, Qingpu District
Shanghai-P.R. China
Identification of the certified type (the detailed characteristics will be defined in the additional pages)
Ultrasonic gas meter
Type: Sonar IUxxS
where xx can be G4 or U6 or U8
Designation of the module (if applicable)
Not applicable
This OIML 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):
OIML R 137
Edition (year): 2012, including Amendment 2014
For accuracy class (if applicable): 1.5
OIML Certificate No.R137/2012-A-IT2-26.01
This OIML Certificate relates only to metrological and technical characteristics of the type of measuring instrument covered by the relevant OIML Recommendation identified above.This OIML Certificate does not bestow any form of legal international approval.
The conformity was established by the results of tests and examinations provided in the associated OIML type evaluation report:No. TER26.02 dated 30 June 2026 that includes 43 pages
The technical documentation relating to the identified type is contained in documentation repository:No. QW 2025/000110
OIML Certificate History
Revision No.
Date
Description of the modification
0
30/06/2026
Certificate Issuing
The OIML Issuing AuthorityPaolo Tafani AlunnoHead of OIML Issuing AuthorityDate:30 June 2026
Important note: Apart from the mention of the Certificate's reference number and the name of the OIML Member State in which the Certificate is 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.
