UK 3128

Issue date: Valid until:

09 March 2020 08 March 2030

Grégory Glas Lead Technical Manager For and on behalf of the Head of Technical Services

0135 NMO I Stanton Avenue I Teddington I TW11 OJZ I United Kingdom

Tel +44 (0) 20 8943 7272 I Fax +44 (0) 20 8943 7270 I Web www.gov.uk/government/organisations/office-for-product-safety-and-standards NMO is part of the Office for Product Safety and Standards within the Department for Business, Energy & Industrial Strategy

EU-type examination certificate UK 3128 Issued by: NMO Notified Body Number 0126 In accordance with the requirements of the Non-automatic Weighing Instruments Regulations 2016 (S.I. 2016 No. 1152) which implement, in the United Kingdom Council Directive 2014/31/EU, this EU-type examination certificate has been issued to:

Xiamen Balance Electronic Technology Co., Ltd Room 1001-1, No.15-16 Tongan Industrial Park Meixi Road, Tongan District, Xiamen PR China

In respect of a family of dual-interval, Class III, non-automatic weighing instruments designated the W23 and the C Series (C01, C02 and C03 models) and having the following characteristics:

Max ≤ 15/30 kg Min ≥ 100 g e ≥ 5/10 g ni ≤ 3000 (per weighing range with dual-interval configuration) The necessary data (principal characteristics, alterations, securing, functioning etc) for identification purposes and conditions (when applicable) are set out in the descriptive annex to this certificate.

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Descriptive Annex 1 INTRODUCTION The W23 and C Series comprises the weighing module (A/D board) of a BPS indicator (model) and a main PCB connected to a range of load cells to form a family of Class III, mains or I/O line powered, or battery-operated, self-indicating, dual-interval, non-automatic weighing instruments. The constructions are shown in Figures 1 and 2.

The instrument is intended to be used for direct sales to the public when connected to a Point of Sale device.

2 DESCRIPTION

2.1 Construction

2.1.1 Main features

− Alloy metal construction − Stainless Steel load receptor − Integral LCD display − No operator keypad for W23 model − Operator keypad with 4 keys for C models − LCD/LED enunciators (STABLE, ZERO and NET) − Level indicator − Adjustable feet

2.1.2 Devices

The instrument may be fitted with the following devices:

− Initial zero setting device (≤ 20% of Max) − Semi-automatic zero setting device (≤ 4% of Max) for C models − Zero tracking (optional) (≤ 4% Max) − Stable weight indicator − Semi-automatic additive or subtractive tare balancing (T = ± Max1) − Tare indicating − Gravity compensation

2.2 Operation

2.2.1 Switch-on

At switch-on, a display test is performed to ensure that the display has no defect.

2.2.2 Zero-tracking

Zero tracking operates provided that the instrument is within range of not more than 4% of its capacity.

2.2.3 Semi-automatic zero setting For C models, the zero button operates provided that the instrument is within range of not more than 4% of its capacity.

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2.2.4 Over-range and under-range

If the load is less than gross zero, then the display shows a “-” sign before the value. The instrument prevents weight indications below -20d.

The instruments may be set to display weight up to nine divisions above Max. At greater loads the display is flashing accompany with warning sound.

2.2.5 Tare

Semi-automatic additive/subtractive tare balancing can be performed; the net indicator is on when a tare is active. The maximum tare is less than or equal to Max1 for dual-interval instruments. Above the limit the display will show “T-Err”.

2.3 Model variants and designation

Model Display Keyboard I/Os Options Remarks W23 LCD None RS232 USB No keys C01 LCD 4 keys RS232 USB

4 keys: Light, Function, Zero and Tare. C02 LCD 4 keys RS232 USB

C03 LCD 4 keys RS232 USB 3 TECHNICAL DATA

3.1 Rated operating conditions

Technical data for the weighing module (A/D board) is provided in section 3.1 of Parts (Test) Certificate GB-1626.

The instrument is mains-powered or powered via I/O line with 5V VDC.

The instrument is also fitted with an integrated rechargeable 5 V, 4.0 Ah battery. The battery can be recharged during operation.

3.2 Software

The software is held in firmware on the circuit board, and has the identification number V02.xx, with xx reflecting non-legally relevant changes. The software version number is displayed at power-up.

Access to the legally relevant parameters and download of software is only possible via the calibration switch on the main board. Access to this calibration switch is prevented by sealing the enclosure (Section 6.2).

3.3 Documentation and drawings

The instrument is fully described in the technical file held at NMO.

3.4 Load cell Any compatible load cell(s) may be used providing the following conditions are met:

− There is a respective OIML Certificate of Conformity (R60) or a Parts (Test) certificate (EN 45501) issued for the load cell by a Notified Body responsible for type examination under Directive 2014/31/EU.

− The certificate contains the load cell types and the necessary load cell data required for the manufacturer’s declaration of compatibility of modules

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(WELMEC 2, 2015, No 10), and any particular installation requirements. A load cell marked NH is allowed only if humidity testing to EN 45501 has been conducted on this load cell.

− The compatibility of the load cells and indicator is established by the manufacturer by means of the compatibility of modules calculation, contained in the above WELMEC 2 document, at the time of verification or declaration of EU conformity of type.

− The load cell transmission must conform to one of the examples shown in the WELMEC Guide 2.4, “Guide for Load cells”.

Alternatively, the instruments may be fitted with one of the following ZEMIC load cells, model L6D:

Max (kg) 15/30 Min (g) 100 e = (g) 5/10 T ≤ (kg) - 14.995

Load cell Emax (kg) 40 4 PERIPHERAL DEVICES AND INTERFACES

4.1 Interfaces

The instrument may have the following interface types:

− RS232 − USB (optional)

4.2 Peripheral devices

The instrument may be connected to any peripheral device that has been issued with Parts (Test) Certificate by a Notified Body responsible for Module B under Directive 2014/31/EU and bears the CE marking of conformity to the relevant directives; or A peripheral device without a Parts (Test) certificate may be connected under the following conditions:

− it bears the CE marking for conformity to the EMC Directive;

− it is not capable of transmitting any data or instruction into the weighing instrument, other than to release a printout, checking for correct data transmission or validation;

− it prints weighing results and other data as received from the weighing instrument without any modification or further processing; and

− it complies with the applicable requirements of EN45501, i.e. 4.2, 4.4, 4.6 and 4.7.

A printing device may print additional information such as date or number to identify the printed weighing result(s) or sets of weighing results.

5 APPROVAL CONDITIONS

This certificate is issued subject to the following conditions:

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5.1 Inscriptions

5.1.1 The instrument shall bear the following inscriptions on or near the display (Figure 3):

− Max − Min − e =

5.1.2 The instrument shall bear the following inscriptions:

− CE marking − Supplementary metrology marking − Identification number of the notified body − Number of the EU-type examination certificate − Manufacturer’s name, registered trade name or registered trade mark and

postal address − Accuracy class − Type, batch or serial number

and, when applicable:

− for instruments consisting of separate but associated units: identification mark on each unit;

− scale interval if it is different from e, in the form d = …; − maximum additive tare effect, in the form T = + …; − maximum subtractive tare effect if it is different from Max, in the form T = – …; − tare interval if it is different from d, in the form dT = …; − maximum safe load if it is different from Max, in the form Lim …; − the special temperature limits, in the form … oC/… oC; − ratio between load receptor and load.

The markings and inscriptions shall fulfil the requirements of Article 6, Article 16, Article 17 and Point 1 of Annex III of Directive 2014/31/EU.

6 LOCATION OF SEALS AND VERIFICATION MARKS

6.1 The data plate is located on the enclosure, and is secured, either by sealing or by being of a form such that it is destroyed when removed.

6.2 Access to the electronics, load cell and calibration switch is prevented by sealing the enclosure using a tamper-evident wire and seal solution (Figure 4).

The sealings must bear an official mark, which may be either:

− a mark of the manufacturer and/or manufacturer’s representative, or

− an official mark of a verification officer.

7 ALTERNATIVES

7.1 There are currently no authorised alternatives.

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8 ILLUSTRATIONS

Figure 1 Example of W23 model Figure 2 Examples of C01, C02 and C03 models Figure 3 Data plate example Figure 4 Sealing methods

CERTIFICATE HISTORY

ISSUE NO. DATE DESCRIPTION UK 3128 09 March 2020 Type examination first issued. - - No revisions have been issued.

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Front

Back

Figure 1 Example of W23 model

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C01 C02

C03

Figure 2 Examples of C01, C02 and C03 models

Figure 3 Data plate example

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W23

C01

C02 and C03

Figure 5 Sealing methods

Crown copyright 2020 NMO Office for Product Safety and Standards Department for Business, Energy & Industrial Strategy This material may be freely reproduced except for sale

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