R139/2018-A-NL1-22.02 Rev. 0
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-A-NL1-22.02 revision 0 Project number 2665464 Page 1 of 3
Issuing authority NMi Certin B.V. Person responsible: M.Ph.D. Schmidt
Applicant and Endress+Hauser Flowtec AG Manufacturer Kagenstrasse 7 4153 Reinach Switzerland
Identification of the
A measuring device (Coriolis), for the measurement of Compressed Natural Gas (CNG) certified type
Type: CNGmass
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 139-1 (2018) "Compressed gaseous fuel measuring systems for vehicles"
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 5 April 2022
NMi Certin B.V.
Thijsseweg 11
2629 JA Delft
The Netherlands
T +31 88 636 2332
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 R139/2018-A-NL1-22.02 revision 0 Project number 2665464 Page 2 of 3
The conformity was established by the results of tests and examinations provided in the associated reports:
CPC-607296-1a, dated 7 February 2007 that includes 72 pages.
CPC-10200012-02a, dates 8 February 2010 that includes 23 pages.
NMi-16200831-01, dated 7 July 2017 that includes 41 pages.
NMi-16200831-02, dated 19 July 2017 that includes 17 pages.
NMi-2665464-01, dated 5 April 2022 that includes 22 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. The construction of the measuring instrument is recorded in the Documentation folder number TC10997-1.
Table 1 General characteristics
| Minimum-maximum flow rate | See table below |
| Minimum measured quantity | See table below |
| Maximum pressure | 350 bar(g) |
| Environmental classes | M2/E2 |
| Ambient temperature range | -40-+55℃;non-condensing humidity |
| Product temperature range | -50-+125℃ |
| Intended for the measurement of | Compressed Natural Gas(CNG) |
| Power supply voltage | 20...28V AC;50/60Hz10...30V DC |
| Software identification | Version number:1.01.00. Checksum:0X13BD2D46 |
Table 2 General characteristics of the family of instruments
| Meter size | DN08 | DN15 | DN25 |
| Minimum flow rate[kg/min] | 0.3 | 0.8 | 1.5 |
| Maximum flow rate[kg/min] | 30 | 80 | 150 |
| MMQ[kg] | 1 | 1 | 1 |
| Maximum pressure[bar(g)] | 350 | 350 | 350 |
| Diameter in/outlet[mm] | 8 | 15 | 25 |
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-A-NL1-22.02 revision 0
Project number 2665464
Page 3 of 3
Certificate history:
This revision replaces the previous version.
| Revision | Date | Description of the modification |
| Initial | 5 April 2022 | - |