R137/2012-A-NL1-20.02
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-20.02 Project number 2414972 Page 1 of 2
Issuing authority
NMi Certin B.V.
Person responsible: M. Boudewijns
Applicant and Manufacturer
Goldcard Smart Group Co., Ltd.
No 158, Jinqiao Street, Economic and Technology development Zone
Hangzhou City, P.R. China
Identification of the certified type
A Diaphragm gas meter Type: JK/G2.5 & JK/G1.6 & JK/G2.5W
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 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 12 February 2020
Certification Board
This document is issued under the provision that no liability is accepted and that the applicant shall indemnify third-party liability.
Reproduction of the complete document only is permitted.
OIML Certificate
Number R137/2012-A-NL1-20.02 Project number 2414972 Page 2 of 2
The conformity was established by the results of tests and examinations provided in the associated reports:
No. NMi-13200784-01 dated 12 March 2015 that includes 35 pages;
No. NMi-2414972-01 dated 12 February 2020 that includes 20 pages.
Table 1 gives the general characteristics of the meter type. Table 2 and 3 specify in detail the essential characteristics and verification scale interval.
Characteristics of the measuring instrument
Table 1 General characteristics
| Destined for the measurement of | Gas volume |
| Environmental classes | M1/E1 |
| Accuracy class | 1,5 |
| Maximum pressure | 0,5 bar |
| Ambient temperature range | -25-+55℃ |
| Gas temperature range | -25-+55℃ |
| Designed for | Non-condensing humidity |
| Orientation | Horizontal |
Table 2 Essential characteristics of the family of instruments
| Type | Cyclic volume[dm3] | Qmax[m3/h] | Qt[m3/h] | Qmin[m3/h] |
| JK/G2.5W | 0.9 | 4 | 0.4 | 0.016 |
| JK/G2.5 | 0.9 | 4 | 0.4 | 0.025 |
| JK/G1.6 | 0.9 | 2.5 | 0.25 | 0.016 |
Table 3 Verification scale interval
| Type | number of drums | control-element[m3] | |
| before the comma | behind the comma | ||
| JK/G2.5W | 5 | 3 | 0.0002 |
| JK/G2.5 | 5 | 3 | 0.0002 |
| JK/G1.6 | 5 | 3 | 0.0002 |