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Title: Directions Governing Type Approval of Electronic Non-automatic Weighing Instruments Ch
Date: 2014.07.14
Legislative: 1.9 clauses enacted and promulgated by the Bureau of Standards, Metrology and Inspection, Ministry of Economic Affairs on September 12, 2003 and effected on promulgated date.
2.9 clauses enacted and promulgated by the Bureau of Standards, Metrology and Inspection, Ministry of Economic Affairs on July 14, 2014 and effected on amended date.
Content:

1. These Directions are established for conducting type approval, series type approval and

approbation of electronic non-automatic weighing instruments and other relevant activities.

 

2. To apply for type approval, series type approval or approbation, the applicant shall submit the

following technical documents:

(1) Two instruction manuals of operating (exempted for applicants for approbation);

(2) Two lists of the matters of lead seals and stamps (exempted for applicants for approbation);

(3) The original certificate of type approval (exempted for applicants for type approval);

(4) Description of the difference caused by alteration (exempted for applicants for type approval).

 

3. To apply for type approval or series type approval, the applicant shall submit the following

appearance photos (attached on A4 paper and bound into two volumes; the photos shall not be

smaller than 12.7 x8.8 cm2):

(1) Totally six photos of the upper, lower, left, right, front and back face of the instrument; and

(2) Close-up photos of the marks, buttons and sealing.

 

4. An applicant for type approval shall submit the following technical documents to the designated

Laboratory recognized by the designated dedicated weights and measures authority to apply for test:

(1) Structural chart and 3D breakdown drawing (commonly called "exploded view") of the sample;

(2) Instruction manual of operating functions;

(3) Specification sheet of functions and devices (see the annexed table);

(4) Circuit block diagram and circuit diagram;

(5) List of the critical parts, at least including the detailed specifications of load cell, analog/digital

converter and microcomputer processor;

(6) Description of sealing and locking methods (including the location diagram of lead seals and the

list of the matters of lead seals and stamps);

(7) Description of pricing and weighing setting or adjusting methods (including calibration of

weighing capacity);

(8) Illustration of the labels, marks, and other information displayed on the weighing instrument;

(9) Where the instrument has the pricing display function, flow chart explaining calculation of the

amount payable (including the principle of rounding);

(10) Other illustrations (briefly describing the rated current and voltage, usage, attentions in usage,

and performance of the machine);

(11) Photos of all circuit boards, load cells and important components.

 

5. Under any of the following circumstances, application for series type approval or approbation

may be filed, directly without the need for test, for type-approved electronic non-automatic

weighing instruments:

(1) Where the verification scale interval increases without changing the maximum weighing

capacity;

(2) Where the ratio of the maximum weighing capacity to the rated capacity of load cell varies

within 0.5〜1.0, without exceeding the number of verification scale interval originally approved;

(3) Where the range of tare decreases;

(4) Where a weighing instrument is used with the same circuit board as that of a type-approved

pricing weighing instrument but without the pricing element and the pricing display;

(5) Where the type, color or size of display tube or display component is changed, or the

arrangement of the elements on the panel is changed, without changing the driving electronic

circuit;

(6) Where the pattern of buttons or their arrangement on the panel is changed without changing the

driving electronic circuit;

(7) Where any button operating function is added or reduced without changing the effect of

weighing or pricing, nor changing the driving electronic circuit;

(8) Where the size of the load receptor is changed within 20% of the original size approved;

(9) Where any active or passive component is replaced by another with the same or higher

performance (only applicable to the performance that is easy to confirm on the manual or

specification sheet);

(10) Where the specification of battery is changed;

(11) Where an internal jump wire is added with changing the inter-crossing only;

(12) Where a few passive components are added to a non-weighing circuit or I/O circuit to prolong

its service life;

(13) Where the appearance of the base is changed;

(14) Where the arrangement of external texts or marks is changed; or

(15) Where the foot pad of the instrument is changed.
 

6. Under any of the following circumstances, application for series type approval or approbation

shall be filed, after complete the necessary performance tests listed as below, for type-approved

electronic non-automatic weighing instruments:

(1) Where the number of verification scale interval is out of the original range approved, the

weighing performance, discrimination, repeatability, eccentricity, zero return, creep, tilting, tare,

temperature, endurance and other relevant items should be tested.

(2) Where the weighing circuit, the control program, or the control circuit of display is changed, the

weighing performance, voltage variation, short time power reduction, electrical burst, electrostatic

discharge, and immunity to radiated electromagnetic field and other relevant items should be tested.

(3) Where the load cell or the structural connector (aluminum reinforcement, aluminum tray) of load

cell is changed, the weighing performance, discrimination, repeatability, eccentricity, zero return,

creep, temperature, tilting, tare, endurance and other relevant items should be tested.

(4) Where the compensation method of power supply circuit is changed, the voltage variation, short

time power reduction, electrical burst, and other relevant items should be tested.

(5) Where the size of load receptor is changed by more than 士20 % of the original size approved or

the shape of the support is changed, the weighing performance, eccentricity, tilting and other

relevant items should be tested.

(6) Where the approved material of the structure or the load receptor changed, the electrical burst,

electrostatic discharge, immunity to radiated electromagnetic field and other relevant items should

be tested.

(7) Where the range of tare originally approved is increased, the tare test should be conducted.

(8) Where the load receptor to be higher or the connecting parts(aluminum reinforcement or

aluminum receptor) of load cell changed eccentricity, tilting and other relevant items should be

tested.

(9) Where the A/D converter and the circumference are changed without changing load cell, the

weighing performance, temperature, damp heat, voltage variation, immunity to radiated

electromagnetic field and other relevant items should be tested.

(10) Where the circuit layout is changed without relative with the electronic components mentioned

in other items, the electrostatic discharge, immunity to radiated electromagnetic field and other

relevant items should be tested.

(11) Where the type of display and the electronic circuit are changed, the electrical discharge,

immunity to radiated electromagnetic field and other relevant items should be tested.

(12) Where the number of interface changed or enhance the feature of printer, the electrical

discharge, immunity to radiated electromagnetic field, the stability of balancing and other relevant

items should be tested.

When the amendments listed in preceding paragraph adopt the approved electronic modules or

approved electronic components, the applicants may submit concerned testing reports issued by the

designated laboratories, the some necessary test items might be exempted if the application is

censored by the dedicated weighs and measures authorities, designated laboratories or the Type

Approval Commission.

 

7. Under any of the following circumstances, application for type re-approval shall be filed for

type-approved electronic non-automatic weighing instruments:

(1) Where the load conversion method or loading principle is changed;

(2) Where the ratio of the maximum weighing capacity and the rated capacity of load cell is

changed out of the range of0.5 〜1.0;

(3) Where the lever ratio is changed more than 1:50.

 

8. For type-approved electronic non-automatic weighing instruments, in case of any alteration other

than listed in Articles 5 to 7, the test items should be designated by the BSMI after the Type

Approval Commission of the BSMI or the designated laboratory review the relevant technical

documents submitted by the applicant.

 

9. To apply for extension of the validity period of a type approval certificate, the original applicant

for type approval or the successor shall submit the following documents:

(1) Appearance photos as listed in 3;

(2) Declaration; and

(3) Technical documents as listed in 4.

Attachments: