For the European countries: compliance 5 CD OIML R 50 with MID

shootceaselessUrban and Civil

Nov 16, 2013 (3 years and 4 months ago)

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1




TC9 / SC2 Comments on:

Fifth
Committee Draft R 50
-
1
,
-
2

:
Continuous Totalising weighing instruments



Part 1 Metrological and test requirements

Part 2: Metrological controls and performance tests

TC9 / SC2 Country/Liaison
Organisation:

TC 9/SC 2
5

CD
Comment

Template

Date to return comments:
30
Oct
2012

TC9 / SC2 Secretariat


United Kingdom (
morayo.awosola@nmo.gov.uk
)


SOME EXTRA INFORMATION FOR SUPPORT FROM
THE SECRETARIAT


For the European countries: compliance
5

CD
OIML R 50 with MID

The document WELMEC 8.16
-
4 gives the following non
-
compliances of OIML R 50
(1997
) with the MID.

I added in the right column my opinion about
5CD
OIML R 50:



ANNEX 1 ESSENTIAL REQUIREMENTS

From WELMEC 8.16
-
4

Comments

GE related to

5CD

R 50

1.2. Under rated operating conditions and in the presence of a
disturbance, the performance requirement shall be as laid down in
the appropriate instrument specific requirements.

Where the instrument is i
ntended to be used in a specified
permanent continuous electromagnetic field the permitted
performance during the radiated electromagnetic field
-

amplitude
modulated test shall be within MPE.

4.1.2, 4.3,
4.5.2

No reference to
permanent
continuous
Electroma
gnetic
field

In my opinion, this was covered by

A.8.4 in the
version 1997

I
n
5CD

much more

extensively
covered now
in
A.7.3.5

1.3.1.
Climatic environments

The manufacturer shall specify the upper temperature limit and the
lower temperature limit from any
of the values in Table 1 unless
otherwise specified in the annexes MI
-
001 to MI
-
010, and indicate
whether the instrument is designed for condensing or non
-
condensing humidity as well as the intended location for the
instrument, i.e. open or closed.

2.5.4.1

4.5.1

No reference to
condensing
humidity or
location

In
5CD
:

A.7.2.3 Damp heat, steady state

Damp heat, steady state
(
condensing
)

in
A.7.2.3.2

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[Table
1]

1.3.2. (a) Mechanical environments are classified into classes M1 to
M3 as described below.

…………….


䍬慳s敳 t
c潶敲敤⁩渠删n0
-

ㄹ㤷

Classes not specifically mentioned, only
referenced in a new Note in A.7.2.3
which
states that
:



Tests shall be conducted to the appropriate
classification for electrical and mechanical
tests.
The severity level stated in the tests
A.7.3.1 to A.7.3.5 apply to
instruments
installed and used in locations with
significant or high levels of vibration and
shock, and electromagnetic disturbances
corresponding to those likely to be found in
industrial
environments


1.3.3. (a) Electromagnetic environments are classified into classes
E1, E2 or E3 as described below, unless otherwise laid down in the
appropriate instrument
-
specific annexes.

……………..

pev敲楴y
lev敬s 慲攠
r敦敲敮e敤⁩n
敡c栠h敳琠慮d
慲攠敱畩v
al敮琠
瑯tbㄮ

乯⁣l慳s敳⁵ 敤
i渠n㔰
-
ㄠㄹ97

乯⁥q畩val敮琠瑯


bl散瑲潭慧湥tic⁥ vir潮m敮瑳

s灥cifi敤 慳
慢ov攮


䥮f




Battery voltage
variations


瑥t琠

is
c潶敲敤
A.㜮7.㘬6a湤敮瑩潮敤⁩n
2.7.1.4
.3

and 4.5.5


But in my opinion, these
requirements/tests are
not r
e
ally suitable for a car
-
battery

(MID E3)

But how realistic is it to expect a belt weigher
being powered by a car battery?

And in particular if such battery is (during
operation of the belt weigher) simultaneously
used for, for
instance, starting the engine?

1.3.3 (b) The following influence quantities shall be considered in
relation with electromagnetic environments:



sol瑡来 i湴敲e異ti潮s,



ph潲琠v潬瑡t攠牥e畣瑩o湳,



sol瑡来⁴ 慮sie湴n ⁳異灬yi湥s 慮搯潲⁳ig湡li湥s,



bl散瑲潳瑡tic⁤ sc桡r来s,



剡oi漠or敱u敮cy 敬散瑲潭慧湥瑩c⁦i敬摳,

㐮4⸲… 㐮4.O

A⸸.N

A⸸.N

A⸸.O

A⸸.3

A⸸.4

T

O

dez

c潮摵c瑥搠牦



s畲来u

b䴠Miel摳ow⁩渠A⸷.㌮3 慮d


剡oi慴敤 ㄰s⽭⁵ ⁴ ′ dez


䍯C摵c瑥搠do


㠰 䵈z



p畲来u 湯w i渠A⸷⸳.3

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䍯C摵c瑥搠牡di漠or敱u敮cy 敬散瑲潭慧湥瑩c⁦i敬摳渠n異ply li湥s
慮搯潲⁳i杮慬 li湥s,



p畲来s ⁳異ply li湥s a湤⽯爠/i杮al lin敳

ㄮN⸲⸠
Ambient humidity



Acc潲摩湧⁴漠oh攠elim慴ac 敲慴in朠gnvir潮m敮琠t渠w桩c栠h桥
i湳瑲畭敮琠ts⁩n瑥t摥搠瑯tb攠es敤 敩t桥
r⁴桥⁤慭瀠p敡t
-
s瑥tdy⁳t慴a
(湯n
-
c潮d敮si湧)爠 慭瀠p敡琠tyclic
c潮摥湳i湧)⁴es琠may⁢
慰灲p灲楡t攮



T桥⁤ m瀠p敡琠tyclic⁴敳琠ts⁡ 灲潰pi慴a 睨敲攠wo湤敮s慴a潮 is
im灯r瑡t琠tr wh敮 灥n整牡ei潮
v慰潲

睩ll⁢攠ecc敬敲e瑥t⁢y⁴桥
敦f散琠tf⁢牥慴 i湧⸠䥮fco湤i瑩潮s 睨敲攠湯n

c潮d敮sin朠g畭i摩ty is
愠a慣瑯爠瑨t⁤慭p
-
桥慴as瑥tdy⁳瑡瑥tis⁡ 灲p灲楡瑥t

㐮㔮4

A⸷.3

䍯湤敮sin朠g湤
乯渠c潮摥湳i湧

Now includes Damp heat, steady state
(condensing) in A.7.2.3.2.

5 Durability

A measuring instrument shall be designed to maintain an adequate
stability of its metrological characteristics over a period of time
estimated by the manufacturer, provided that it is properly installed,
maintained and used according to the ma
nufacturer’s instruction
睨敮 i渠瑨t 敮viro湭敮瑡t c潮摩tio湳⁦潲⁷hic栠i琠ts i湴敮摥搮

㐮ㄮ4

T⸷.4

乯⁴Ns琠mr潣敤畲u

䑵a慢ility is敮瑩潮敤 i渠n㔬5
慮搠d渠n湮數⁄㬠

摵r慢ility⁴ s琠is
s畢j散琠瑯 湡瑩潮al⁲e煵ir敭敮瑳


乥N敲瑨el敳sⰠw攠ei杨琠to湣l畤攠eha
琠瑨攠e畭
all “testing” the instrument during all other tests
c慮⁢ ⁲e条rd敤⁡ 愠⡭潤敲慴敤) 摵r慢ility⁴ s琮

㜮7⸠A敡s畲楮朠i湳瑲畭敮琠t桡ll⁢攠e敳i杮敤⁳漠慳⁴ ⁡ low⁴桥
c潮瑲潬 潦⁴ 攠e敡s畲楮朠gasks⁡ 瑥爠瑨t⁩湳瑲畭敮琠tas⁢ 敮 灬慣敤
潮⁴ 攠
m慲k整e慮搠d畴ui湴n 畳攮e䥦 c敳s慲yⰠ,p散ial⁥煵i灭敮琠tr
s潦瑷慲攠a潲⁴ois⁣潮瑲ol⁳桡ll 扥⁰慲琠潦⁴ 攠i湳瑲畭敮琮tT桥⁴ s琠
灲潣敤畲攠uh慬l⁢攠e敳cri扥搠d渠nh攠e灥r慴i潮慮畡l.

th敮⁡ m敡s畲楮朠g湳瑲畭敮琠t慳⁡ s潣i慴敤⁳潦tw慲攠whic栠
灲潶i摥s 潴o敲e
f畮c瑩潮s⁢esi摥s⁴ 攠e敡s畲楮朠g畮c瑩o測n瑨攠
s潦瑷慲攠a桡琠is⁣ri瑩cal⁦潲⁴桥om整牯e潧ic慬⁣h慲慣瑥物stics⁳桡ll⁢
i摥湴nfia扬e⁡ 搠d桡ll 湯琠扥⁩湡摭issi扬y i湦l略湣敤 by 瑨t
慳s潣i慴ad⁳潦瑷慲攮

㔮5⸱⸱

A⸱.… A⸱N

乯⁲敦敲敮e攠eo
潰敲慴io渠n慮畡l
i渠
o㔰



M
敮ti潮
p潦瑷慲t

“Operational manual” was covered by A.1 in the
潬搠v敲ei潮 ㄹ9㜮

And now (among others) in 5.1.1: “operating
instructions, operating manual”.



p潦瑷慲攠tow i渠n⸸

a湤 An湥x⁂.

(慮搠dev敲el 桥r⁣la畳敳)

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8.3. Software that is
critical for metrological characteristics shall be
identified as such and shall be secured.

Software identification shall be easily provided by the measuring
instrument.

Evidence of an intervention shall be available for a reasonable
period of time.


M
ention of
Software

Software now in 4.8

and Annex B.

(and several other clauses)

8.4. Measurement data, software that is critical for measurement
characteristics and metrologically important parameters stored or
transmitted shall be adequately protected ag
ainst accidental or
intentional corruption.


M
ention of
Software

Software now in 4.8

and Annex B.

(and several other clauses)

9.3. The instrument shall be accompanied by information on its
operation, unless the simplicity of the measuring instrument makes

this unnecessary. Information shall be easily understandable and
shall include where relevant:



r慴ad 敲慴e湧⁣o湤i瑩潮s;



m散桡湩c慬 慮搠敬散瑲潭慧湥瑩c⁥湶ir潮m敮琠tl慳ses;



瑨t⁵ 灥r⁡湤 low敲⁴敭灥r慴ar攠limi琬twh整e敲⁣o湤敮s慴a潮 is
灯ssi扬攠er

湯琬t潰e渠nr⁣los敤潣a瑩o渻



i湳瑲畣ti潮s⁦潲⁩湳t慬l慴io測nm慩湴n湡湣攬ere灡irsⰠ灥rmissi扬攠
慤j畳瑭敮瑳;



i湳瑲畣ti潮s⁦潲⁣潲o散琠tp敲慴eo渠n湤 慮y⁳灥ci慬⁣on摩ti潮s
畳攻



c潮di瑩潮s⁦潲⁣潭灡瑩扩lity 睩瑨ti湴敲e慣敳Ⱐ,畢
-
慳s敭扬i敳爠
m敡s畲u
湧⁩湳瑲畭敮瑳

㌮3ㄠ&″⸱.

䵡rki湧s
䥮f瑲畭敮t



乯敮瑩潮 潦
“user manual” or
i湦潲o慴a潮⁦潲⁴桥o
畳敲





“Operational manual” was mentioned in A.1 of
瑨t v敲eio渠n㤹㜮

Now, among others, in 5.1.1: “operating
instructions, operating manual”.


㤮㜮9
T桥⁵湩瑳 敡s畲um敮琠tse搠d湤⁴桥ir⁳ym扯ls s桡ll⁢ i渠
慣c潲摡湣攠睩瑨t瑨t 灲pvisi潮s ⁃潭m畮ity敧isl慴io渠n渠畮i瑳
m敡s畲um敮琠t湤⁴ 敩r⁳ym扯ls.

㌮ㄱ

啮r瑳
m敡s畲um敮琠
im灬i敤

乯w⁩n

O


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11.1. A measuring instrument other than a utility
measuring
instrument shall record by a durable means the measurement result
accompanied by information to identify the particular transaction,
when:



瑨t敡s畲um敮琠ts n
-
r数敡瑡tl攠慮搻



瑨t敡s畲楮朠g湳瑲畭敮琠ts rm慬ly in瑥t摥搠d潲⁵o攠en⁴ e
慢a
敮c攠潦 攠ef⁴ 攠er慤i湧⁰慲瑩敳.

㌮3

T桥r攠es
m慮摡瑯ty
r敱畩r敭敮琠瑯
桡v攠e 灲楮t敲

乯w⁩渠

㐮4
湯wa摡ysⰠ瑨敲攠慲攠慬s漠潴o敲e
m整e潤sⰠ,瑨tr⁴桡渠愠ari湴敲⁴漠牥e潲搠o桥
m敡s畲um敮琠牥t畬瑳⁢y 愠摵r慢l攠e敡湳!)Ⱐ,畴u

T桥r攠es⁷ri瑴tn

i渠n.7
: “
Me
asurement data
SHALL

be stored …”


11.2. Additionally, a durable proof of the measurement result and
the information to identify the transaction shall be available on
request at the time the measurement is concluded.


There is no
mandatory
requirement in R
50
-
1 1997 to have
a printer

Now in 4.7 (nowadays, there are also other
methods, other than a printer to record the
measurement results by a durable means!), but:

There is written

in 4.7
: “
Measurement data
SHALL

be sto
red …”




ANNEX MI
-
006 AUTOMATIC WEIGHING INSTRUMENTS

Uit WELMEC 8.16
-
4

Commentaar GE n.a.v.
5CD

R 50

1.4. For other influence quantities (if applicable):

The rate(s) of operation.

The characteristics of the product(s) to be weighed.

2.4

T.2.2

Minimum Flowrate

In the version 1997, Q
min

and

Q
max

were both
covered by 3.11.2


In
5

CD in 3.9.2

3.6. Any result outside the measurement range shall be identified as
such, where a printout is possible.

3.4

(Indication not
printout)

Now (more
extensively) in 3.3.6.

But only alarm, and no requirement to provide
stored/
printer

results with a warning.

2.1. The manufacturer shall specify the measurement range, the ratio
between the minimum net load on the weighing unit and the maximum
capacity, an
d the minimum totalised load.

2.3

2.4

No measuring
range, but
definition by Max
and flow rate
values

In the version 1997, Q
min

and

Q
max

were both
covered by 3.11.2

In the version 1997, Max was covered by 3.11.3

In
5

CD in 3.9.2

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3 MPE

[Table 8]

2.2.1


T慢l攠e

T桥⁳敮瑥tc攠i渠
㈮O⸱⁩s潴oi渠nf
-
〰㘮

䡯wev敲Ⱐi渠
灲慣瑩c攬ei琠ts
湥c敳s慲y⁴
r潵湤 慳⁩n摩c慴敤
i渠n㔰


㈮O⸱

p漠oy⁣o湣l畳i潮:

l䥍f⁒ 㔰
N㤹㜩⁣潭灬ie搠⡡湤
5
䍄C
still
com灬i敳) wi瑨tt桩s⁲敱畩rem敮琠tf⁍ 䐮