R117/2019-A-NL1-23.01 Rev. 1

OIML Member State The Netherlands

Number R117/2019-A-NL1-23.01 revision 1 Project number 3778101 Page 1 of 5

Issuing authority Person responsible:

NMi Certin B.V.

M.Ph.D. Schmidt

Applicant and Manufacturer

KROHNE Ltd. 34-38 Rutherford Drive Park Farm Industrial Estate Wellingborough NN8 6AE United Kingdom

Identification of the certified type

A measurement transducer Type: OPTIMASS 2000; OPTIMASS 6000

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 117-1:2019 "Dynamic measuring systems for liquids other than water"

Accuracy class 0.3/0.5

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.

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 24 December 2025

Certification Board

This document is issued under the provision that no liability is accepted and that the applicant shall indemnify third-party liability.

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 Member State The Netherlands

Number R117/2019-A-NL1-23.01 revision 1

Project number 3778101

Page 2 of 5

The conformity was established by the results of tests and examinations provided in the associated reports:

Characteristics of the measurement transducer

In tables 1 to 4, the general characteristics of the measuring instrument are presented. The construction of the measurement transducer is recorded in documentation folders TC11847-2 for the measurement sensor and TC11848-2 for the electronics.

Table 1 General characteristics applicable to all OPTIMASS measurement sensors

• Density range: 685...1100 kg/m $ ^{3} $

• Accuracy class: 0.3 and 0.5

• Environmental classes: M3 / E3 / H3

• Ambient temperature range: -40 ... +55 $ ^{\circ} \mathrm{C} $

• Intended for the measurement of: Oil and oil products, chemicals and potable liquids

Notes:

(1) This table indicates the approved measurements: M for Mass, D for density, and V for volume.

OIML Member State The Netherlands

Number R117/2019-A-NL1-23.01 revision 1

Project number 3778101

Page 3 of 5

OIML Member State The Netherlands

Number R117/2019-A-NL1-23.01 revision 1

Project number 3778101

Page 4 of 5

The metrological software is identified by the software version and/or checksum, which can be checked via menu item B5.5.0 and B5.7.0 in the display.

The ER number is directly linked to the hardware and the software of the instrument. If either one is updated, the number changes.

The MFC400 flow transmitter may only be used in combination with Coriolis measurement sensors manufactured by KROHNE Ltd.

OIML Certificate

OIML Member State The Netherlands

Number R117/2019-A-NL1-23.01 revision 1 Project number 3778101

Page 5 of 5

When powered by a road vehicle battery, the MFC400 can only be used in interruptible measuring systems. The MFC400 is connected directly to the 24 VDC of the road vehicle battery, with no intermediate switch in between.

Certificate history:

This revision replaces the previous version.