R85/2008-A-NL1-25.01 Rev. 1
OIML Certificate
OIML Member State The Netherlands
Number R 85/2008-A-NL1-25.01 revision 1
Project number 3866763
Page 1 of 2
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: TM-80N
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 26 May 2025
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 R 85/2008-A-NL1-25.01 revision 1
Project number 3866763
Page 2 of 2
The conformity was established by the results of tests and examinations provided in the associated report(s):
No. NMi-3866763-01 rev.1 dated 26 May 2025 that includes 29 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. R85-2008-A-NL1-25.01-1.
Table 1 General characteristics
| Maximum measuring range level | 50 metres | |
| Ambient temperature range | -40+70℃; condensing humidity | |
| Liquid temperature range | -200℃/+35℃ | |
| Density displacer measuring range | 600-1100kg/m3at maximum viscosity of 5mPa·s | |
| Power supply voltage | Min 200-Max 240V AC;50/60Hz | |
| Software identification | Version number:V50.8 Checksum:31452 | |
| Data communication | Inputs | -HART |
| Outputs | -Modbus -BPM -HART -4-20mA analog output | |
Certificate history:
| Revision | Date | Description of the modification |
| Initial | 13 May 2025 | Initial issue |
| 01 | 26 May 2025 | Changing the description in the results on the front page of the type evaluation report and correcting total page number. |