R139/2018-A-NL1-26.05 Rev. 0
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-NL1-A-26.05 revision 0
Project number 4054032
Page 1 of 2
Issuing authority NMi Certin B.V. Person responsible: M.Ph.D. Schmidt
Applicant and GRAF Industries S.p.A. Manufacturer Via G. Galilei, 32/36 41015 Nonantola (MO) Italy
Identification of the certified type An electronic calculating and indicating device intended to be used as a part of a compressed gas (CG) dispenser. Manufacturers mark: GRAF Industries S.p.A. Type: PM3
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 139:2018 "Compressed gaseous fuel measuring systems for vehicles"
Accuracy class 1,5/2/4
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 20 May 2026
Certification Board
This document is issued under the provision that no liability is accepted and that the applicant shall indemnify third-party liability.
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-NL1-A-26.05 revision 0
Project number 4054032
Page 2 of 2
The conformity was established by the results of tests and examinations provided in the associated report(s):
No. NMi-4054032-01 dated 20 May 2026 that includes 34 pages;
No. NMi-4054032-02 dated 20 May 2026 that includes 21 pages.
Characteristics of the measuring instrument
In Table 1 the general characteristics of the measuring instrument are presented.
The construction of the measuring instrument is recorded in the Documentation folder no. TC9056-1.
Table 1 General characteristics
| Accuracy class | 1,5;2 or 4(Depending on measuring system accuracy class) |
| Environmental classes | M2/E1 |
| Ambient temperature range | -25-+55℃;non condensing humidity |
| Intended for the measurement of | Compressed gas(e.g.CNG or hydrogen) |
| Power supply voltage | 100-240V AC;50/60Hz |
| Software identification | Version number:H900 Checksum:82E9E447 |
| Maximum mass indication | 6digits |
| Maximum unit price | 4digits |
| Maximum price to pay | 6digits |
Certificate history:
| Revision | Date | Description of the modification |
| Initial | 20 May 2026 | First issue. |