R137/2012-B-NL1-19.03
OIML Certificate
OIML Member State The Netherlands
Number R 137/2012-B-NL1-19.03 Project number 2379625 Page 1 of 3
Issuing authority
NMi Certin B.V.
Person responsible: C. Oosterman
Applicant and Manufacturer
Tancy Instrument Group Co., Ltd.
No.198, Hualian Road, Cangnan Industrial Zone
Wenzhou City, Zhejiang Province
P.R. China
Identification of the A rotary displacement gas meter certified type Type: TYL
Characteristics See page 2 and further
This OIML Certificate is issued under scheme B
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.
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
17 June 2019
NMi Certin B.V.
Thijsseweg 11
2629 JA Delft
The Netherlands
T +31 88 636 2332
C. Oosterman Head Certification Board
This document is issued under the provision that no liability is accepted and that the applicant shall indemnify third-party liability.
The notification of NMi Certin B.V. as Issuing Authority can be verified at www.oiml.org
OIML Certificate
OIML Member State The Netherlands
Number R 137/2012-B-NL1-19.03
Project number 2379625
The conformity was established by the results of tests and examinations provided in the associated report(s):
Page 2 of 3
- No. NMi-SO14204809-01 dated 7 April 2019 that includes 34 pages.
Characteristics of the gas meter
In Table 1, the general characteristics of the measuring instrument are presented. Tables 2 and 3 gives an overview of the general characteristics of the family of instruments.
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 |
OIML Certificate
OIML Member State The Netherlands
Number R 137/2012-B-NL1-19.03
Project number 2379625
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 | 0,5 | |
| 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 | 6,5 |
| 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.