R137/2012-A-NL1-24.06 Rev. 0
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-24.06 revision 0 Project number 3639792 Page 1 of 3
Issuing authority
NMi Certin B.V.
Person responsible: M.Ph.D. Schmidt
Applicant and Manufacturer
Identification of the certified type
DMIT (Daemyoung I&T)
648 Seobusaet-gil, Guemcheon-gu
08504, SEOUL
Korea
A Diaphragm gas meter
Type:
G1.6, G2.5 and G4
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
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 8 August 2024
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 R137/2012-A-NL1-24.06 revision 0 Project number 3639792 Page 2 of 3
The conformity was established by the results of tests and examinations provided in the associated report(s):
No. NMi-2415824-01 dated 22 March 2021 that includes 44 pages;
No. NMi-3639792-01 dated 23 July 2024 that includes 35 pages.
Production location
DMIT (Daemyoung I&T) Factory 515-4, 3.1manse-ro Jangan-myeon, Hwaseong-si Gyeonggi-do, Korea
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 Documentation folder no. 3639792-01.
Table 1 General characteristics
| Maximum pressure | 500 mbar |
| Environmental classes | M1/E2 |
| Ambient temperature range | -10-+55℃ |
| Gas temperature range | -10-+55℃ |
| Designed for | condensing humidity |
| Orientation | connection ports vertical |
| Intended for the measurement of | Gas volume |
Number R137/2012-A-NL1-24.06 revision 0
Project number 3639792
Page 3 of 3
Table 2 General characteristics of the family of instruments
| Meter size | G1.6 | G2.5 | G4 |
| Minimum flow rate $Q_{\min}(m^{3}/h)$ | 0,016 | 0,025 | 0,04 |
| Transitional flow rate $Q_{\mathrm{t}}(m^{3}/h)$ | 0,25 | 0,4 | 0,6 |
| Maximum flow rate $Q_{\max}(m^{3}/h)$ | 2,5 | 4 | 6 |
| Overload flow rate $Q_{\mathrm{r}}(m^{3}/h)$ | 3 | 4,8 | 7,2 |
| Cyclic volume(dm3) | 1 | 1,2 | |
| Indicating range(m3) | xxxxxx,xxx | ||
| Verification scale interval(m3) | 0,0002 | ||
| Nominal diameter[mm] | 20 | ||