R60/2021-A-NL1-26.01 Rev. 0
OIML Certificate
OIML Member State The Netherlands
Number R60/2021-A-NL1-26-01 revision 0 Project number 3869136 Page 1 of 3
Issuing authority
NMi Certin B.V. Person responsible: M.Ph.D. Schmidt
Applicant and Manufacturer
Changzhou Weibo Weighing Equipment System Co., Ltd. No.3 Building, Sino-Europe (Changzhou) Testing Inspection and Cooperation Industrial Park, Tianning District 213000 Changzhou China
Identification of the certified type
A single point load cell, with strain gauges.
Registered trade name
: Webowt or FLINWEBO
Type
: WB702IL
Characteristics
See next page
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 Test Report) with the requirements of the following Recommendation of the International Organization of Legal Metrology (OIML):
OIML R 60-1:2021 for accuracy class C
This Certificate relates only to the metrological and technical characteristics of the type of measuring instrument covered by the relevant OIML International Recommendation above-identified. 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 Test Report(s) is not permitted, although either may be reproduced in full.
Issuing Authority
NMi Certin B.V., OIML Issuing Authority NL1 23 January 2026
NMi Certin B.V.
Thijsseweg 11
2629 JA Delft
The Netherlands
T +31 88 6362332
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 R60/2021-A-NL1-26-01 revision 0
Project number 3869136
Page 2 of 3
The conformity was established by the results of tests and examinations provided in the associated report:
No. NMi-3869136-01 dated 23 January 2026 that includes 51 pages.
Characteristics of the load cell:
| Characterization of load cell capabilities | Analog-passive load cell |
| Maximum capacity ($E_{\mathrm{max}}$) | 250kg up to and including 1000kg |
| Minimum dead load | 0kg |
| Accuracy Class | C |
| Rated Output | 2,0mV/V±0,2mV/V |
| Maximum number of load cell intervals(n)^{(1)}$ | 3000 |
| Ratio of minimum LC Verification interval$^{(1)}$ $Y=E_{\mathrm{max}}/v_{\mathrm{min}}$ | 25000 |
| Ratio of minimum dead load output return$^{(1)}$ $Z=E_{\mathrm{max}}/(2*\mathrm{DR})$ | 6000 |
| Input impedance | 385$\Omega$±10$\Omega$ |
| Temperature range | -10℃/+40℃ |
| Fraction $p_{\mathrm{LC}}$ | 0,7 |
| Humidity Class | CH |
| Safe overload | 150% of $E_{\mathrm{max}}$ |
| Output impedance | 350$\Omega$±1$\Omega$ |
| Recommended excitation | 5~15V AC/DC |
| Excitation maximum | 20V AC/DC |
| Transducer material | Alloy Steel |
| Atmospheric protection | Silicon rubber |
Remarks:
- The characteristics for $ n_{\mathrm{max}} $ Y and Z can be reduced separately.
Each load cell produced is provided with an accompanying document with information about its characteristics.
The above identified Type (represented by the sample(s) identified in the OIML Test Report) have been found to comply with the additional national requirements established by the United States of America (NIST Handbook 44 and NCWM Publication 14), included in the Utilizer Declaration:
- R 60 OIML-CS rev.2 Additional requirements from the United States Accuracy class III L;
OIML Certificate
OIML Member State The Netherlands
Number R60/2021-A-NL1-26-01 revision 0 Project number 3869136 Page 3 of 3
Revision History
| Revision | Date | Changes |
| 0 | 2026-01-23 | Initial issue. |