R137/2012-NL1-2015.07
OIML Certificate of Conformity
OIML Member State The Netherlands
Number R137/2012-NL1-15.07 Project number SO15201673 Page 1 of 3
Issuing authority NMi Certin B.V.
Person responsible: C. Oosterman
Applicant and manufacturer Tancy Instrument Group Co. Ltd. No.3468, Tongfu Rd. Lingxi town, Wenzhou city 235800 Cangnan county, Zhejiang province China
Identification of the certified type A rotary displacement gas meter Type: TYL
Characteristics See page 2 and 3
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
- 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 23 November 2015
C. Oosterman Head Certification Board
NMi Certin B.V.
Hugo de Grootplein 1
3314 EG Dordrecht
the Netherlands
T +31 78 6332332
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
Parties concerned can lodge objection against this decision, within six weeks after the date of submission, to the general manager of NMi (see www.nmi.nl).
OIML Certificate of Conformity
OIML Member State The Netherlands
Number R137/2012-NL1-15.07 Project number SO15201673 Page 2 of 3
The conformity was established by the results of tests and examinations provided in the associated OIML Type Evaluation Report:
- No. NMi-SO14204809-01 dated 7 April 2015 that includes 34 pages.
Characteristics of the gas meter:
Table 1 gives the general characteristics of the meter type. Table 2 and 3 specify in detail the essential characteristics and verification scale interval. The construction of the measuring instrument is recorded in the Documentation folder no. T10487-2.
Table 1: General characteristics
| Destined for the measurement of | Gas volume |
| Mechanical class | M1 |
| Electromagnetic class | Not applicable(the meter has no electronics) |
| Ambient temperature range | -25℃/+55℃ |
| Gas temperature range | -25℃/+55℃ |
| Designed for humidity conditions | Not applicable(the 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 |
| Table 2: Essential characteristics | |||||
| Nominal | Type | Cyclic | Qmax | Qt | Qmin |
| diameter | volume | ||||
| [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 | 19,7 | 1600 | 80,0 | 16,0 |
Remarks regarding table 2:
The overload flow rate $ \left( Q_{\mathrm{r}} \right) $ for all rotary meters is equal to $ 1, 2 \cdot Q_{\mathrm{m a x}}. $
The working pressure range for all rotary displacement gas meters is atmospheric up to and including 16 bar(g).
| 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 meter are no specific installation conditions applicable.