R137/2012-A-NL1-24.01 Rev. 1
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-24.01 revision 1
Project number 4103266
Page 1 of 4
Issuing authority NMi Certin B.V. Person responsible: M.Ph.D. Schmidt
Capital Innotech Private Ltd. E-100, Mewar Industrial Area Udaipur - 313003 Rajasthan India
Identification of the certified type
A rotary gas meter Manufacturers mark: Type:
Capital CAP
Characteristics
See following pages
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 1.0
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 26 June 2026
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 R137/2012-A-NL1-24.01 revision 1
Project number 4103266
Page 2 of 4
The conformity was established by the results of tests and examinations provided in the associated reports:
No. NMi-12200167-02 dated 29 January 2013 that includes 56 pages;
No. NMi-SO14204809-01 dated 7 April 2015 that includes 34 pages;
No. NMi-12200167-01 dated 2 November 2012 that includes 49 pages;
No. NMi-2356380-02 dated 27 May 2022 that includes 16 pages;
No. NMi-3531005-02 dated 20 April 2023 that includes 12 pages.
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 the Documentation folder no. T12738-1.
Table 1 General characteristics
| Intended for the measurement of | Gas volume (natural gas) |
| Mechanical class | M1 |
| Electromagnetic Class | Not applicable (the gas meter has no electronics) |
| Accuracy class | 1.0 |
| Maximum pressure | 21 bar(g) |
| Ambient temperature range | -25...+55℃ |
| Gas temperature range | -25...+55℃ |
| Designed for humidity conditions | Not applicable (the gas meter has no electronics) |
| Orientation | Horizontal, vertical up and vertical down(all orientations) |
| Flow direction | Uni-directional(indicated with arrow) |
| Power supply voltage | Not applicable |
| Software identification | Not applicable |
Flow rate range:
The flow rate range shall fulfill the following conditions:
| Qmax/Qmin | Qmax/Qt |
| ≥50 | ≥10 |
| ≥5and<50 | ≥5 |
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-24.01 revision 1 Project number 4103266 Page 3 of 4
Table 2 Essential characteristics of the family of instruments
| Nominal diameter | Type | Cyclic volume | Qmax | Qt | Qmin |
| [mm] | [dm3] | [m3/h] | [m3/h] | [m3/h] | |
| 25 | G10 | 0,177 | 16 | 1,6 | 0,4 |
| 50 | G16 | 0,210 | 25 | 2,5 | 0,5 |
| G25 | 0,283 | 40 | 2,0 | 0,5 | |
| G40 | 0,566 | 65 | 3,25 | 0,4 | |
| G65 | 0,708 | 100 | 5,0 | 0,5 | |
| 80 | G100 | 1,05 | 160 | 8,0 | 0,65 |
| G160-3 | 2,78 | 250 | 12,5 | 1,6 | |
| 100 | G160-4" | 2,78 | 250 | 12,5 | 1,6 |
| G250 | 4,20 | 400 | 20,0 | 2,0 | |
| G400-4" | 5,66 | 650 | 32,5 | 3,2 | |
| 150 | G400-6" | 10,5 | 650 | 32,5 | 4,0 |
| G650 | 15,7 | 1000 | 50,0 | 10,00 | |
| 200 | G1000 | 19,7 | 1600 | 80,0 | 16,0 |
Table 3 Verification scale interval
The measured volume is presented by means of a mechanical register. Examples are stated in documentation number 12738/0-06. The index can be rotated over a maximum of $ 3 5 9^{\circ} $ for flow directions left-right and bottom-top. The sealing of the index has to be broken to rotate the index.
The register is built up as follows:
| Type | Number of drums | Control element | |
| Before the comma | Behind the comma | [m3] | |
| G10-G25 | 6 | 2 | 0,002 |
| G40-G400 | 7 | 1 | 0,02 |
| G650-G1000 | 8 | 0 | 0,2 |
Installation conditions:
For this rotary meter no specific installation conditions are applicable.
Adjustment
The transmission between the measuring part and the register is executed by means of a magnet coupling. The register is adjustable via adjustment wheels. An example of the gear transmission is presented in documentation number 12738/0-06. A gear ratio table is presented in documentation number 12738/0-07.
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-24.01 revision 1 Project number 4103266
Page 4 of 4
Certificate history:
| Revision | Date | Description of the modification |
| Initial | 17 May 2024 | Parallel of R137/2012-A-NL1-23.02 |
| 1 | 26 June 2026 | Updating pressure to 21 bar(g) based on NMi-2356380-02. |