R85/2008-A-NL1-22.02 Rev. 1

OIML Member State The Netherlands

Number R85/2008-A-NL1-22.02 revision 1 Project number 3866764 Page 1 of 3

Issuing authority NMi Certin B.V. Person responsible: M.Ph.D. Schmidt

Manufacturer Joyo M&C Technology Co., Ltd. Room 008,1F (2-3), Building 4, Ganluyuan, Chaoyang District Beijing, China.

Identification of the certified type An automatic level gauge (servo principle) with temperature and density displacer sensor Manufacturer's mark: Joyo M&C Technology Co., Ltd. Type: BJLM-80M

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 85-1&2:2008 "Automatic level gauges for measuring the level of liquid in stationary storage tanks"

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 27 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.

OIML Member State The Netherlands

Number R85/2008-A-NL1-22.02 revision 1

Project number 3866764

Page 2 of 3

The conformity was established by the results of tests and examinations provided in the associated report(s):

• No. NMi-2579596-01 dated 14 June 2022 that includes 29 pages;

• No. NMi-2579596-02 dated 14 June 2022 that includes 23 pages;

• No. NMi-3866763-01 dated 25 May 2025 that includes 29 pages;

• No. NMi-3866764-01 dated 27 June 2025 that includes 11 pages.

Characteristics of the measuring instrument

In Table 1 the general characteristics of the measuring instrument are presented.

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. 2579596-2.

The automatic level gauge is intended to measure by servo principle automatically and display the level of the liquid contained in a tank. Herewith the following displacer types can be used:

• SF displacer with no additional sensors;

• TF displacer including temperature sensor;

• MF displacer including temperature sensor and density sensor.

OIML Certificate

OIML Member State The Netherlands

Number R85/2008-A-NL1-22.02 revision 1 Project number 3866764

Page 3 of 3

Certificate history:

This revision replaces the previous version.