R137/2012-A-NL1-23.02 Rev. 0
OIML Certificate
OIML Member State The Netherlands
Number R137/2012-A-NL1-23.02 revision 0 Project number 3531005 Page 1 of 3
Issuing authority
Applicant and Manufacturer
NMi Certin B.V. Person responsible: M.Ph.D. Schmidt
Tancy Instrument Group Co., Ltd.
No.198, Hualian Road, Cangnan Industrial Zone
Wenzhou City, Zhejiang Province
P.R. China
Identification of the certified type
A rotary displacement gas meter Type: TYL
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 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 20 April 2023
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
Number R137/2012-A-NL1-23.02 revision 0 Project number 3531005 Page 2 of 3
The conformity was established by the results of tests and examinations provided in the associated reports:
No. NMi-12200167-01 dated 2 November 2012 that includes 49 pages;
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-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. T10487-4.
Table 1 General characteristics
| Destined for the measurement of | Gas volume |
| Mechanical class | M1 |
| Electromagnetic Class | Not applicable(the gas meter has no electronics) |
| Accuracy class | 1.0 |
| Maximum pressure | 16 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-NL1-23.02 revision 0 Project number 3531005 Page 3 of 3
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 | 10,0 | |
| 200 | G1000 | 19,9 | 1600 | 80,0 | 16,0 |
Table 3 Verification scale interval
| 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 gas meter, no specific installation conditions are applicable.
Certificate history:
| Revision | Date | Description of the modification |
| Initial | 20-04-2023 | Scheme B to Scheme A. |