Czech Metrology Institute  
Okružní 31, 638 00 Brno  
 
1. ------IND- 2018 0294 CZ- EN- ------ 20180710 --- --- PROJET 
 
Executive summary for the European Commission (not part of this legislation)  
Instruments and systems measuring the flow volume of liquids other than water – dynamic measuring 
systems for liqui ds other than water, which are fitted to vehicles and tank -vehicles, are placed on the 
market and put into use in the Czech Republic in accordance with Directive 2014/32/EU (the 
Measuring Instruments Directive – MID). Once they have been put into use, they  become subject to 
national metrology regulation – verification at specified intervals. This notified legislation only 
applies to the verification of measuring instruments that have already been put into use. It does not 
concern placing them on the market or putting them into use.  
The requirements imposed on these measuring instruments when in use are fully compatible with the 
MID and are also based on OIML Recommendation  117.  
Some parameters listed in this document are properties of the measuring instrumen ts when they are 
new; they are listed herein only because the preservation of these properties when the instruments are 
in use is subject to visual or other checks during verification.  
(End of executive summary.)  
 
 
Contact person: Tomáš Hendrych  
Tel.: +42 0 545 555 414  
 
 
P U B L I C  N O T I C E 
 
As the authority with substantive and territorial jurisdiction in the matter of laying down metrological 
and technical requirements for legally controlled measuring instruments and stipulating the testing 
methods f or type approval and verification of legally controlled measuring instruments pursuant to 
§ 14(1) of Act No  505/1990 on metrology, as amended (hereinafter referred to as the ‘Metrology 
Act’), and in accordance with the provisions of §  172 et seq. of Act No  500/2004, the Administrative 
Procedure Code (hereinafter referred to as the ‘APC ’), the Czech Metrology Institute (hereinafter 
referred to as the ‘CMI ’) commenced ex officio proceedings on 26 February 2010 pursuant to §  46 
APC, and, on the basis of suppor ting documents, issues the following:  
 
 General Measure No 0111 -OOP -C069 -16 
 
2 I. 
D R A F T   G E N E R A L  M  E A S U R E 
number: 0111 -OOP -C069 -16  
laying down the metrological and technical requirements for legally controlled measuring 
instruments, including testing methods for type approval and verification of the following legally 
controlled measuring instruments:  
instruments and systems measuring the flow volume of liquids other than water and of liquefied 
gas – dynamic measuring systems for liquids other than water, which are fitted to veh icles and 
tank -vehicles  
 
This general measure stipulates the metrological and technical requirements for instruments and systems 
(fitted to vehicles) measuring the flow volume of liquids other than water and of liquefied gas , that are 
applied after they ar e placed on the market or put into use during their verification.  
1 Basic definitions  
For the purposes of this general measure, terms and definitions pursuant to VIM and VIML1 as well as 
the terms and definitions stated below shall apply.  
1.1  
tank -vehicle  
A self-propelled vehicle, trailer or semi -trailer, upon which a permanent or removable container that 
may be divided into multiple measuring chambers and is suitable for transporting liquids other than 
water is fitted.  
1.2  
dynamic measuring systems for liquids other than water (hereinafter referred to as a 
‘measuring system ’) 
A system of devices for determining and recording the flow volume (weight or volume or volume 
under set conditions) of a given liquid other than water on the basis of measuring essential va lues 
during its flow through a completely filled pipe.  
2 Metrological requirements  
Metrological requirements are based on requirements of the Government Regulation on measuring 
instruments and on requirements of OIML  R 117-12 and OIML R 813. 
                                                      
1  TNI 01 0115 International Vocabulary of Metrology – Basic and General Concepts and Associated Terms 
(VIM) and International Vocabulary of Legal Metrology (VIML) are part of the technical harmonisation 
compendium ‘Terminology in the field of metrology ’, which is publicly accessible at www.unmz.cz.  
2  OIML R 117 -1 ‘Dynamic measuring systems for liquids other than water. Part 1: Metrological and technical 
requirements ’ – publicly accessible at www.oiml.org  
3  OIML R 81  ‘Dynamic measuring devices and systems for cryogenic liquids ’ – publicly accessible at 
www. oiml.org  General Measure No 0111 -OOP -C069 -16 
 
3 During verific ation, measuring instruments are subject to the metrological requirements that were 
applicable when they were placed into circulation.  
2.1 Rated operating conditions  
2.1.1 Ambient temperature range  
Measuring systems must work properly over a range of ambie nt temperatures specified by the 
manufacturer as the operating temperature range, which must be at least –25 °C to 55  °C.  
2.1.2 Flow range  
The flow range of a measuring system specified by the manufacturer must be within the limits of the 
flow range of ea ch of its components, especially the measuring instrument.  
The minimum required flow ratio Qmax : Qmin of a measurement system for cryogenic liquids is 5:1 and 
for other liquids 4:1.  
2.1.3 Measured liquid  
The measured liquid must be specified by a name or type whose physical properties are specified and 
generally known, or must be specified directly by stating the range of relevant physical properties with 
which manufacturers supply these liquids, e.g. example density or viscosity range, temperature range, 
pressure range or Reynolds number.  
2.1.4 Minimum measured quantity ( mmq ) 
The minimum measured quantity of liquid, which the dynamic measuring system is intended to 
measure, is expressed in the form 1 ×  10n, 2 × 10n or 5 × 10n units of volume or weight, whe re n is a 
positive or negative whole number, or zero.  
A measuring system ’s minimum measured quantity must not be smaller than the largest of the 
minimum measured quantities of any of its components.  
2.2 Accuracy of measuring systems  
Measuring systems must meet requirements for the maximum permissible error over the entire flow 
measurement range specified by the manufacturer.  
2.2.1 Accuracy class of measuring systems  
The measuring system must be allocated to an accuracy class according to Table 1.  
The manufa cturer may specify a higher accuracy for certain types of measurement systems.  
Table 1 – Accuracy classes  
Class  Usage area  
0.5 Measuring systems for liquids with low viscosity ( 20 mPa·s).  
Measuring systems for milk, beer and other articles of consumption . 
Measuring systems for fuelling aircraft.  General Measure No 0111 -OOP -C069 -16 
 
4 1.0 Measuring systems for liquefied gases under pressure at temperatures of –10 °C or higher.  
Measuring systems of normal class 0.5, but used for liquids:  
a) whose temperature is lower than −10 °C or higher than +50 °C,  
b) whose dynamic viscosity is higher than 1  000 mPa·s.  
1.5 Measuring systems for liquefied carbon dioxide.  
Measuring systems for liquefied gases under pressure at temperatures lower than –10 °C 
(with the exception of cryogeni c liquids).  
2.5 Measuring systems for cryogenic liquids (at temperatures lower than –153 °C).  
 
2.2.2 Maximum permissible errors  
The maximum permissible errors for measuring systems and the measuring instruments in said 
systems are specified in Table 2.  
Table 2  – Maximum permissible errors  
--- Maximum permissible errors  
Accuracy class  0.5 1.0 1.5 2.5 
Measuring systems (A) (entire system)  0.5 %  1.0 %  1.5 %  2.5 %  
Measuring instruments (B)  0.3 %  0.6 %  1.0 %  1.5 %  
Regardless of the measured amount, the siz e of the maximum permissible error is the larger of the 
following two values:  
a) the absolute value of the maximum permissible error listed in Table 2;  
b) the absolute value of the maximum permissible error for the smallest measured quantity Emin. 
For the smallest measurements equal to two litres or more, the following conditions shall apply:  
Condition  1: Emin must meet the following condition: Emin ≥ 2R, where  R is the smallest increment 
value on the indicator.  
Condition  2: Emin is given by the following formula: Emin = (2·mmq )  (A/100), where mmq  is the 
smallest dispensed amount, and A is the numerical value for measuring systems (A) in 
Table  2. 
The measuring system shall not exploit the maximum permissible error or systematically favour any 
party.  
2.2.3  Converted indicated information  
In the case of converted indicated information, the maximum permissible error for measuring systems 
(A) in Table 2 applies.  General Measure No 0111 -OOP -C069 -16 
 
5 2.2.4 Converter  
The maximum permissible error of converted indicated data caused by the conversion apparatus is 
equal to (A – B), where A and B are values listed in Table 2.  
Parts of the converter that can be tested separately:  
a) Counter: the maxim um permissible error of indicated values of characteristic values of liquid 
valid for calculation, positive or negative, is equal to one tenth of the maximum permissible 
error for measuring systems (A) in Table 2.  
b) Attached measuring instruments must have a t least the same accuracy as given by the values in 
Table 3.  
Table 3  – Maximum permissible errors of attached measuring instruments  
--- Accuracy class of the measuring system  
0.5 1.0 1.5 2.5 
Temperature  ± 0.5 °C  ± 1.0 °C  
Pressure  less than 1 MPa:  ± 50 kPa 
from  1 to 4 MPa:  ± 5 % 
greater than  4 MPa:  ± 200  kPa 
Density  ± 1 kg/m3 ± 2 kg/m3 ± 5 kg/m3 
NOTE  
These values apply to data for characteristic values of a liquid indicated by the converter.  
 
c) Accuracy of calculation function: The maximum permissible calculation error for each 
characteristic value of the liquid, positive or negative, is equal to two fifths of the value listed 
under subparagraph (b) for attached measuring instruments.  
3 Technical requirements  
Technical requirements are based on requirem ents of the Government Regulation on measuring 
instruments and on requirements of OIML  R 117-12 and OIML R 813. 
During verification, measuring instruments/measuring systems are subject to the metrological 
requirements that were applicable when they were pl aced into circulation.  
3.1 Design of the measuring system  
A measuring system shall consist of the following main components as a minimum:  
  a measuring instrument ; 
  a dividing point ; 
  a hydraulic line with the given properties ensuring the correct fu nctioning of the measuring 
system . General Measure No 0111 -OOP -C069 -16 
 
6 For proper operation, it may be necessary to connect further components to the measuring system, 
such as:  
  a filter;  
  a pump;  
  a differential valve ; 
  a correction device ; 
  a device for removing the gaseous phase  and/or a gas detector or anti -vortex device.  
The measuring system may be equipped with other auxiliary and additional devices.  
If multiple flow meters intended for separate transactions share common components (such as a 
counter, filter, device for removi ng the gaseous phase, converter for fluid quantity), each flowmeter 
with the aforementioned shared components will form a separate measuring system.  
Each measuring system must be used for the specific product or specific group of products for which it 
was approved. The pipes of measuring systems must be designed so that it is not possible for the 
products to be mixed.  
3.1.1 Specific requirements for measuring liquefied gases under pressure  
Only measuring systems with a gas hose are permissible.  
No connectio ns between the gaseous phases of a tank and the receiving tank are allowed.  
3.1.2 Specific requirements for measuring liquefied carbon dioxide  
Only systems with an empty hose are allowed.  
A connection between the gaseous phases of a tank vessel and the rec eiving tank is permissible if a 
device is installed for enabling the compensation of the quantity delivered by a quantity corresponding 
to the quantity of vapour returned in the gas pipe, or if compensation is conducted by an automatic 
calculation. However , in both cases, it must be possible to safely stop the flow of liquid from the 
dispensing tank to the receiving tank with a return gas pipe.  
3.1.3 Specific requirements for measuring milk, beer and other foamy beverages  
In the receiving application, the d ividing point is given by the constant level in the venting system 
upstream of the measuring instrument. The venting device must use a vessel with a constant level, 
which is usually combined into a single device, but may be separate if the venting device i s at the 
outlet of the vessel with a constant level and upstream of the measuring instrument. This constant level 
in the venting device must be possible to control before and after each measurement. The level must 
form automatically.  
The venting device may  be placed either at the input to the pump or between the pump and the 
measuring instrument. A venting device is essential if the measuring instrument is powered by gravity, 
by the emptying of churns, with the help of a pump, or by a vacuum system. If the milk is fed by a 
pump or by way of a vacuum system, the system must be equipped with a gas separator. This device 
may be combined with a vessel with a constant level.  
The measuring system must be completely filled before measuring begins. In the case of re ceiving 
installations, if it is not practical to fill the measuring system before measuring, it is possible to 
determine the quantity required to fill the measuring system; this quantity must be indicated on the 
measuring system ’s information plate so that  it can be factored into calculations during the initial 
measurement when receiving. The initial quantity measured when receiving must be equal to or 
greater than the quantity needed to fill the system completely.  
3.1.4 Specific requirements for fuelling a ircraft  
The requirements also apply to fuelling helicopters.  General Measure No 0111 -OOP -C069 -16 
 
7 Measuring systems for fuelling aircraft are systems with a full hose.  
The function of the gas separator may be performed by a water separator with a microfilter.  
The water separator may be fitted  to the measuring instrument. The water drainage valve should not be 
lead-sealed.  
3.2 Indicator  
The measuring system must be equipped with an indicator which shows the liquid flow quantity under 
measurement conditions.  
The volume is displayed in units of v olume proportionate to the measuring range, such as m3, dm3 (in 
litres). The weight is displayed in units of weight proportionate to the measuring range, such as kg or t.  
In the case of influencing variables, temperature is displayed in °C or  K, density in  kg/m3 and pressure 
in bar or Pa (kPa, Mpa).  
If the measuring system is equipped with a device for converting the measured liquid flow quantity to 
the given reference conditions, it must also be equipped with a device to display this converted 
quantity. If  the conversion function is active and the amount under basic conditions is displayed, the 
measurement result must be accompanied by this information, e.g. ‘volume at 15  °C’. 
The use of one indicator for multiple measuring systems is permitted on the condi tion that it is not 
possible to use two measuring systems at the same time and that it is clear which measuring system the 
information is displayed for.  
3.3 Device for removing the gaseous phase  
The possibility of undissolved air or gases appearing in the measured liquid upstream of the flow 
meter must be minimised, specifically by using a suitable arrangement of a hydraulic line including 
pump and pressure ratios, or by using a device for removing the gaseous phase for liquids with a 
dynamic viscosity of l ess than 20  mPa·s at a temperature of 20  °C, which is suitable for the given 
measurement conditions.  
The influence of undissolved air and gases on the measurement result may not exceed:  
a) 1 % of the measured quantity for milk, beer and other beverages that tend to foam, as well as for 
liquids with a viscosity of over 1 mPa·s at 20 °C, or  
b) 0.5 % of the measured quantity for other liquids.  
However, this influence need not be less than 1  % of the smallest graduation.  
3.4 Protection against unauthorised tamperin g 
Sufficient room shall be provided on the measuring system for the placement of the official mark and 
the main mark, thus allowing easy placement and visual inspection without the need for disassembly.  
The measuring system is designed so that the measurin g instrument, indicator, converter or other 
devices of the measuring system cannot be tampered with in a way that could affect the accuracy of 
measurement without visible damage to the official marks.  
4 Markings  
All of the information on the label of the m easuring system must be indelible, irremovable and legible.  
4.1 Marking of the measuring system  
Each measuring system must have at least the following information on a special information plate:  
a) the manufacturer's name or trade mark;  General Measure No 0111 -OOP -C069 -16 
 
8 b) the measuring sy stem ’s model name;  
c) the serial number and year of manufacture;  
d)  the minimum flow Qmin and maximum flow Qmax; 
e)  the minimum and maximum operating pressure;  
f)  the minimum measured quantity ( mmq ); 
g)  the name or type of measured liquid, or the range  of relevant characteristics;  
h)  the minimum and maximum temperature of the measured liquid;  
i)  climatic, mechanical and electrical class of the environment;  
j)  the nominal AC voltage value and/or limit DC voltage value;  
k) the accuracy class;  
l)  the n umber of the type approval certificate, if available, or indication of conformity;  
m) a conformity assessment mark including the number of the notified body (if placed on the 
market by way of conformity assessment).  
This identification plate must be firmly  affixed to the measuring system in a visible location and 
sealed.  
4.2 Marking  of metrologically relevant components  
Each individual metrologically relevant component of a measuring system, such as the measuring 
instrument, measurement transducer, counter,  gas separator, indicator and converter, must display at 
least (for example on another label) the following information:  
 the serial number;  
 the manufacturer's name or trade mark;  
 the number of the type approval certificate, if available;  
 other relevant cha racteristics for the specific device type.  
5 Type approval of the measuring instrument  
The measuring instruments and measuring systems in question are supplied on the market or put into 
use with a conformity assessment pursuant to separate legislation4, and are therefore not subject to 
type approval.  
6 Initial verification  
The measuring instruments and measuring systems in question are supplied on the market or put into 
use with a conformity assessment pursuant to separate legislation4, and are therefore no t relevant for 
initial verification.  
                                                      
4  Government Regulation No 120/2016 on the conformity assessment of measuring instruments when being 
placed on the market  General Measure No 0111 -OOP -C069 -16 
 
9 7 Subsequent verification  
7.1 General  
Measuring systems may be verified in one or more stages. If one or more stages come before the final 
verification of the entire measuring system, the results of the tests in the p revious stages must be taken 
into account in the final stage.  
The measuring system may be verified in one stage if the entire measuring system was built by a 
single manufacturer and if it can either be transported without being disassembled and verified un der 
the conditions in which it is supposed to work, or if the entire verification can be performed at the 
installation site.  
In all other cases, the verification shall be performed in two stages.  
 The first stage only applies to measuring instruments in their capacity as a component of a 
measuring system, or, as the case may be, of additional devices. First -stage tests may be carried 
out with a liquid other than that for which the system is intended. First -stage tests may be 
carried out on test equipment.   
 The second stage must be carried out at the installation site and under operation conditions with 
the liquid for which the system is intended.  
Regardless of the number of times and the site where the stages were carried out, and regardless of the 
envir onment of the test, it must be possible to make a conclusion that the measuring system installed at 
the place of use fulfils all applied requirements under the specified working conditions.  
Verification with a liquid other than the one intended for measure ment may only be conducted on the 
condition that it is approved in the documents of the measuring instrument ’s type approval or 
conformity assessment. Measuring systems for milk and other beverages or liquid foodstuffs may be 
tested with water.  
The followi ng tasks and tests are conducted during subsequent verification in the final stage:  
a) visual inspection;  
b) functional test of the device for separating the gaseous phase;  
c) accuracy test;  
d) tests of auxiliary and additional devices.  
7.2 Test equipment  
Test equipme nt used to perform accuracy tests must have an extended uncertainty of measurement less 
than 1/3 of the maximum permissible error pursuant to Article 2.2.2, Table 2.  
7.3 Visual inspection  
The purpose of the visual inspection of the measuring system shall b e to check:  
 whether the measuring instrument submitted for verification and its components conform to the 
approved type or with the design of a measuring instrument for which conformity has been 
declared as part of its placement on the market; attention mu st be paid when checking markings 
pursuant to Chapter 4;  
 whether the measuring instrument and its components, including rubber hoses, are physically 
damaged or whether metal parts show signs of corrosion;  
 whether the content and implementation of markings and inscriptions correspond to the data and 
requirements specified in the type approval of type -examination certificate for the measuring 
instrument.  
If the measuring instrument fails to meet visual inspection requirements, no further tests are 
performed.  General Measure No 0111 -OOP -C069 -16 
 
10 7.4 Functional test of the device for separating the gaseous phase  
If possible or feasible, the functioning of the device for separating the gaseous phase shall be tested, 
although it is not necessary to verify compliance with the maximum permissible error  applicable to the 
device in question.  
7.5 Measuring system accuracy test  
An accuracy test of a measuring system is performed either using the volume method, by dispensing a 
specified amount of liquid into a standard graduated container, or by using the we ight method, by 
dispensing a specified amount of liquid into a container on standard scales, or with a reference flow 
meter at the specified flow.  
The measuring system has passed the accuracy test if the errors do not exceed the maximum 
permissible error l isted in Article 2.2.2, Table 2.  
If all true measuring instrument errors have the same sign, at least one of them must have a value 
lower than half of the maximum permissible error listed in Article 2.2.2, Table 2.  
The test is to be conducted, as a minimum , at the characteristic flow rate within the measuring 
system ’s flow range. Other flows and tests may be specified, depending on the type of measuring 
system.  
7.5.1 Measuring systems for liquids with low viscosity ( 20 mPa·s)  
Directly prepared liquid is t o be used as the test liquid.  
  Test of the complete emptying of the chamber.  
 Test of the empty chamber's connectivity during the dispensing process.  
 Test of the complete emptying of the hose for the minimum measured quantity ( mmq ). 
7.5.2 Measuring sy stems for liquids whose temperature is lower than –10 °C or higher than 
+50 °C, or whose dynamic viscosity is greater than 1  000 mPa ∙s 
Directly prepared liquid is to be used as the test liquid.  
Accuracy test for the minimum measured quantity ( mmq ). 
7.5.3 M easuring systems on tank -vehicles for AUS32 (AdBlue)  
Test liquid: AdBlue.  
Accuracy test for the minimum measured quantity ( mmq ). 
7.5.4 Measuring systems for fuelling aircraft  
Directly prepared liquid is to be used as the test liquid.  
Test flows:  
  Qmax; 
  0.75· Qmax; 
  0.5·Qmax;  
  0.2·Qmax. 
Accuracy test for the minimum measured quantity ( mmq ) if less than 500 L.  
The average error value between the flow 0.2· Qmax and the flow Qmax may not exceed 0.2 %. 
Repeatability may not exceed ±0.05 %.  
7.5.5 Measuri ng systems for the delivery of freshly collected milk  
Test liquid: milk or water.  General Measure No 0111 -OOP -C069 -16 
 
11 In the test with water, the flow meter for measuring milk is set in a permissible error range from −0.45 
% to +0.15 %.  
If an error is suspected in the volume of the measurin g system, which is credited automatically or 
manually to the initial supplier on the collection line, a test to determine the volume of the measuring 
system shall be carried out.  
7.5.6 Measuring systems for the distribution of beer or other foamy beverages  
Test liquid: beer or water.  
In the test with water, the instrument for measuring beer is set in a permissible error range from 0.0 % 
to −0.6 %.  
Test flows:  
  Qmax; 
  0.5·Qmax;  
  Qmin. 
Accuracy test for the minimum measured quantity ( mmq ). 
The source chamber/tank filled with the test volume is emptied entirely until the dispensing process is 
ended by the separator. This test is repeate d twice.  
7.5.7 Measuring systems for gases liquefied under pressure (LPG)  
Directly prepared liquid is to be used as the test liquid.  
7.5.8 Measuring systems for liquefied compressed gases measured at temperatures below −10 °C, 
liquefied carbon dioxide and  liquids measured at temperatures below −153 °C  
Directly prepared liquefied gas is to be used as the test liquid. Systems for liquefied oxygen, argon or 
natural gas may be tested with liquid nitrogen.  
7.6 Tests of auxiliary and additional devices  
The corre ct functioning of auxiliary and additional devices is checked, if the measuring system is 
equipped with them. The relevant test is to be conducted only once; tests of auxiliary and additional 
devices may be combined with the accuracy test.  
7.6.1  Zeroing te st 
The values of the volume/weight indicator are deducted after the measuring system is zeroed.  
The residual indication after zeroing shall not be greater than half the minimum specified volume 
deviation Emin for counters with continuous display.  
Counters with discontinuous display shall indicate zero after having been zeroed, without any 
ambiguity.  
7.6.2  Aggregate counter test  
The difference between the figure on the aggregate counter and the figure on the indicator that applies 
to the same measurement is specified. The indication of the aggregate counter is determined as the 
difference between the initial and final values.  
The difference between these figures must not be more than one increment of the aggregate counter.  
7.6.3  Printer test  
Figures from the  printer are compared with figures on the indicator that apply to the same 
measurement.  General Measure No 0111 -OOP -C069 -16 
 
12 These figures may not differ from each other by more than one increment of the indicator in the case 
of counters with continuous display; in the case of counters with d iscontinuous display, they may not 
differ from one another at all.  
7.6.4  Attached thermometer test  
During the test, the deviation of the attached thermometer at three temperatures is determined:  
  Tmin; 
  15 °C;  
  Tmax. 
The difference between the tempe rature figure Ti (°C) indicated on the dispenser and the figure Tn 
indicated by the benchmark temperature is determined in Tn (°C).  
Any deviations in the connected thermometer may not exceed the value of the maximum permissible 
error specified in Table 3.  
7.6.5  Conversion device test  
This test is to ascertain the accuracy of the conversion device at the current temperature of the test 
liquid.  
The relative deviation of the indicated volume determined at base temperature Ebv may not exceed the 
value of the m aximum permissible error specified in Chapter 2.2.4.  
7.6.6 Software version check  
This check is to ascertain whether the software version in the metrologically relevant components 
corresponds to the software version specified in the type approval certifica te or the type -examination 
certificate.  
7.6.7 Price counter test  
For measuring systems with a mechanical counter, the test must be performed for at least two unit 
prices at maximum and minimum counter rotation rates.  
For measuring systems with an electron ic counter, the test is performed for a maximum unit price. The 
price indicated is compared to the price calculated as the product of the indicated volume and the unit 
price.  
During the verification of measuring systems, the test is performed only for the unit price currently in 
use.  
The difference between the price displayed and the price calculated from the unit price and the 
indicated amount must not be greater than the price corresponding to Emin. 
7.6.8 Test of system with a velocity flow meter in a di scharge pipe  
This is only applied for dynamic measuring systems on tank -vehicles for low -viscosity liquids ( 20 
mPa·s) stored at atmospheric pressure, with the exception of beverages.  
For systems with a velocity flow meter in a discharge pipe at an inclin ation of less than 5° from the 
horizontal plane, another complete emptying test is carried out at a longitudinal and transverse 
gradient.  
The tank -vehicle is tilted against the downgrade of the discharge pipe at an angle of up to 5° and 
dispensing is teste d by the usual procedure. This process is to determine whether the measuring system 
is capable of stopping the dispensing or reporting an error state.  General Measure No 0111 -OOP -C069 -16 
 
13 7.7 Evaluation of the tests  
If the measuring instrument meets all requirements of the test, the measuring  instrument will be fitted 
with an official mark at the place specified in the type approval or type -examination certificate.  
Some converters have a non -resettable counter of interventions in the - measuring instrument ’s 
configuration (possibly including da te and time) which may influence the metrological parameters; in 
some cases, a unique number is generated after the intervention in the configuration. This information 
is specified in the verification record in the measuring instrument ’s record/master data  sheet. The 
measuring instrument ’s type approval certificate may require a current printout of the configuration 
after the test, or a specification of a number generated outside the measuring instrument (such as on 
the measuring system ’s information plate) . 
8 Examination of the measuring instrument  
When verifying measuring instruments pursuant to § 11a of the Metrology Act at the request of a 
person who could be affected by its incorrect measurement, please proceed according to Chapter 7; the 
final sentence  of Article 7.2 shall not apply. 1.25 times the maximum permissible errors pursuant to 
Article 2.2.2 shall be applied as the maximum permissible error.  
9 Notified standards  
For the purposes of specifying the metrological and technical requirements for meas uring instruments 
and specifying the testing methods for their type approval and verification stemming from this general 
measure, the CMI shall notify Czech technical standards, other technical standards or technical 
documents of international or foreign o rganisations, or other technical documents containing more 
detailed technical requirements (hereinafter referred to as ‘notified standards ’). The CMI shall publish 
a list of these notified standards attached to the relevant measures, together with the gene ral measure, 
in a manner accessible to the public (on www.cmi.cz ). 
Compliance with notified standards or parts thereof is considered, to the extent and under the 
conditions stipulated by a general measure, to be compliance  with the requirements stipulated by this 
measure to which these standards or parts thereof apply.  
Compliance with notified standards is one way of demonstrating compliance with the requirements. 
These requirements may also be met by using another technica l solution guaranteeing an equivalent or 
higher level of protection of legitimate interests.  
II. 
G R O U N D S 
The CMI issues, pursuant to §  14(1)(j) of the Metrology Act, for the implementation §§ 6(2), 9(1) and 
(9) as well as  11a(3) of the Metrology Act,  this general measure laying down the metrological and 
technical requirements for legally controlled and testing methods for verification of the following 
legally controlled measuring instruments: instruments and systems measuring the flow volume of 
liquid s other than water and of liquefied gas (dynamic measuring systems for liquids other than water, 
which are fitted to vehicles and tank -vehicles).  
Implementing Decree No 345/2002 specifying measuring instruments for mandatory verification and 
measuring ins truments subject to type approval, as amended, classifies the measuring instruments 
under items 1.3.12 and 1.3.13 in the annex entitled ‘List of legally controlled measuring instruments ’ 
as measuring instruments subject to type approval and mandatory verif ication.  
This legislation (general measure) will be notified in accordance with Directive (EU) 2015/1535 of the 
European Parliament and of the Council of 9  September  2015 laying down a procedure for the General Measure No 0111 -OOP -C069 -16 
 
14 provision of information in the field of technical r egulations and of rules on Information Society 
services.  
III. 
I N S T R U C T I O N S 
In accordance with §  172(l), in conjunction with §  39(l) APC, the CMI has stipulated a time limit for 
comments of 30  days as of the date of posting on the official notice  board. Comments submitted after 
this time limit will not be considered.  
The persons concerned are hereby invited to comment on this draft general measure. With a view to 
the provisions of §  172(4) APC, the comments shall be submitted in writing and meet the requirements 
for submissions in accordance with §  37 APC.  
The comments shall include the particulars referred to in §  37(2) APC and clearly state the following: 
who is making the comments; which general measure they concern; to what extent the comments 
challenge the measure; how the general measure runs contrary to legislation or how the general 
measure or the procedure that preceded it is inaccurate; which matters the comments concern and what 
is being proposed. Said comments  must also identify the administrative authority to which they are 
addressed and be signed by the person making them.  
The supporting documents for this draft general measure may be consulted at the Czech Metrology 
Institute, Legal Metrology Department, Ok ružní 31, 638 00 Brno, after making arrangements by 
telephone.  
This general measure shall be posted for 15  days.  
 
 
 
 
 
 
 ................................ ................................ .. 
Pavel Klenovský  
Director -General  
 
 
Person responsible for accuracy: Tomáš Hendrych  
 
Posted on:  12 April 2018  
Signature of the authorise d person confirming posting:  ....................................................  
 
Removed on:  
Signature of the authorised person confirming removal:  ....................................................