R139/2018-A-NL1-21.04 Rev. 1
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-A-NL1-21.04 revision 1 Project number 2573771 Page 1 of 6
Issuing authority Person responsible:
NMi Certin B.V. M.Ph.D. Schmidt
Applicant and Manufacturer
Dover Fueling Solutions UK limited (Filial)
Hanögatan 8
21124 Malmö
Sweden
Identification of the certified type
A CG dispenser (compressed gas) Type: Helix CNG
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 139-1 (2018) "Compressed gaseous fuel measuring systems for vehicles"
Accuracy class 1,5
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 29 October 2021
NMi Certin B.V.
Thijsseweg 11
2629 JA Delft
The Netherlands
T +31 88 636 2332
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
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
OIML Member State The Netherlands
Number R139/2018-A-NL1-21.04 revision 1 Project number 2573771 Page 2 of 6
The conformity was established by the results of tests and examinations provided in the associated report(s):
No. NMi-1901591-01 dated 18 June 2018 that includes 19 pages;
No. NMi-2283414-01 dated 19 February 2021 that includes 34 pages.
Characteristics of the measuring instrument
In Table 1 the general characteristics of the measuring instrument are presented.
The construction of the measuring instrument is recorded in the Documentation folder no. T8935-1.
Table 1 General characteristics
| Minimum-maximum flow rate | Within the flow ranges of the applicable measurement transducer, see table 2 or 3. | |
| Minimum measured quantity | CNGmass | 1kg |
| CNG050 | 1kg | |
| Maximum pressure | CNGmass | 350 bar(g) |
| CNG050 | 317 or 345 bar(g)(depending on flange type) | |
| Accuracy class | 1.5 | |
| Environmental classes | M1/E2 | |
| Ambient temperature range | -25-+55℃;non condensing humidity | |
| Product temperature range | CNGmass | -40-+55℃ |
| CNG050 | -25-+55℃ | |
| Intended for the measurement of | Compressed Natural Gas | |
OIML Certificate
Number R139/2018-A-NL1-21.04 revision 1
Project number 2573771
Page 3 of 6
Each measuring instrument consists at least of:
- One measurement transducer (meter);
The characteristics of the mentioned parts of the dispenser are presented at table 2 and higher.
The same housing of the dispenser can comprise of one or more measuring systems. When more than one measuring systems are in one housing, one calculating/indicating device may be a common part of the measuring systems.
- One calculating/indicating device (calculator).
When two transfer points apply for the same measurement transducer, only one can be applied at the same time.
When applying two measurement transducers and each measurement transducer is destined to deliver separately, this configuration has to be considered as two dispensers.
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-A-NL1-21.04 revision 1 Project number 2573771 Page 4 of 6
Parts of the measuring instrument
The conformity of the following parts was established by the results of tests and examinations provided in the associated report(s):
Part:
Producer:
Measurement transducer
Type:
Micro Motion
CNG050
Documentation folder:
Reports:
TC11012-1
No. C-BI-02-WV-0428 dated 28 May 2002 that includes 20 pages;
No. CPC-92005574-2 dated 26 January 2010 that includes 12 pages;
No. NMi-1900487-01 dated 17 July 2017 that includes 24 pages.
Table 2 General characteristics of the measurement transducer type CNG050
| Flow rate range[kg/min] | 1,3-77kg/min |
| MMQ | 1kg |
| Maximum pressure | 317 or 345 bar(g)(depending on flange type) |
| Environmental classes | M2/E2 |
| Ambient temperature range | -40-+55℃;non condensing humidity |
| Product temperature range | -25-+55℃ |
| Intended for the measurement of | Compressed Natural Gas |
| Power supply | 24VDC±20%(with MVD Direct Connect I.S)15-26VDC |
| Software identification | Version number:3.52Checksum:3C4A |
Installation conditions measurement transducer type CNG050 Installation of the meter with the MVD Direct Connect barrier is preferred to protect against EMI.
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-A-NL1-21.04 revision 1 Project number 2573771 Page 5 of 6
Part:
Producer:
Type:
Documentation folder:
Reports:
Measurement transducer
Endress+Hauser Flowtec AG
CNGmass
TC10997-1
No. CPC-10200012-01 dated 8 February 2010 that includes 23 pages;
No. NMi-16200831-01 dated 7 July 2017 that includes 41 pages;
No. NMi-16200831-02 dated 19 July 2017 that includes 17 pages.
Table 3 General characteristics of the measurement transducer type CNGmass
| Flow rate range[kg/min] | See table 3 below |
| MMQ | See table 3 below |
| Maximum pressure | 350 bar(g) |
| Environmental classes | M2/E2 |
| Ambient temperature range | -40-+55℃;non condensing humidity |
| Product temperature range | -50-+125℃ |
| Intended for the measurement of | Compressed Natural Gas |
| Power supply | 26V AC;50/60Hz24V DC |
| Software identification | Version number:01.01.00Checksum:0X13BD2D46 |
Table 4 General characteristics of the family of instruments type CNGmass
| Meter size | DN08 | DN15 | DN25 |
| Minimum flow rate[kg/min] | 0.3 | 0.8 | 1.5 |
| Maximum flow rate[kg/min] | 30 | 80 | 150 |
| MMQ[kg] | 1 | 1 | 1 |
| Maximum pressure[bar(g)] | 250 | 250 | 250 |
| Diameter in/outlet[mm] | 8 | 15 | 25 |
OIML Certificate
OIML Member State The Netherlands
Number R139/2018-A-NL1-21.04 revision 1 Project number 2573771 Page 6 of 6
Part:
Producer:
Type:
Documentation folder:
Reports:
Calculating/indicating device
Dover Fueling Solutions
OPT-ELT
TC8942-1
No. CPC-805983 dated 24 June 2008 that includes 48 pages;
No. NMi-15200585-01 dated 17 March 2016 that includes 29 pages;
No. NMi-1901591-01 18 June 2018 that includes 19 pages;
No. NMi-2283414-01 19 February 2021 that includes 34 pages.
Table 5 General characteristics of the calculating/indicating device type OPT-ELT
| Maximum weight indication | xxx.xx digits |
| Maximum unit price | xxxx digits |
| Maximum price to pay | xxxxxx digits |
| Environmental classes | M1/E2 |
| Ambient temperature range | -40℃/+55℃(for OTP-ELT with display part no.WM063074-0001)-25℃/+55℃(for OTP-ELT with display part no.WT009754-0001(TSO33108)和WT009754-0002(TSO33121)) |
| Software identification | TOS01802.xxx or TOS002zzz.xx |
| Power supply | 230V AC(+10%-25%)50-60Hz |
Production location
Dover Fueling Solutions UK limited (Filial), Hanögatan 8, 21124 Malmö, Sweden
Dover Fueling Solutions UK, Unit 3, Baker Road, Dundee, DD5 3RT, Scotland, UK
Tokheim India Private Limited, Building No 2, Plot 66 TTC Industrial Area, MIDC, Mahape, Navi Mumbai 400 710, Maharashtra, India
It is the decision and responsibility of the manufacturer Dover Fueling Solutions in which location the CNG dispensers are produced.
Certificate history:
This revision replaces the previous version.
| Revision | Date | Description of the modification |
| Initial | 30 September 2021 | - |
| 1 | 29 October 2021 | Editorial changes. |