C z e c h  M e t r o l o g y  I n s t i t u t e  
District  31,  638 00  
Brno  
 
1. ------IND- 2013 0521 CZ - EN- ------ 20130926 --- --- PROJET 
 
Executive summary for the EC (not part of this legislation)  
Fuel dispensers are placed on the market in the Czech Republic pursuant to Measuring Instruments 
Directive 2004/22/EC. Once they hav e been put into operation, they are subject to national metrology 
regulation – verification (by specified due dates). This notified legislation only concerns measuring 
instruments  that have already been put into operation. It does not concern placing them on the market 
or putting them into operation (except for cases pursuant to Article 23 of the MID). It does not 
concern  measuring instrument s for diesel, for petrol, Ad Blue or CNG.  
Requirements  imposed upon these measuring instruments  in operation are fully  compatible with the 
MID and are based on OIML R 117, which is the harmonised standard for the MID.  
Some parameters listed here are properties of the measuring instrument  when it is new; they are listed 
here because their preservation while in service is s ubject only to visual or other checks during 
verification.  
 (End of executive summary.)  
 
 
 
The Czech Metrology Institute (CMI), as the competent local body for stipulating metrological and 
technical requirements for a specified measuring instrument  and fo r the stipulation of test methods for 
type approval and verification of a specified measuring instrument  pursuant to § 14(1) of Act No. 
505/1990  on Metrology, as amended, and pursuant to provisions of § 172 et seq. of Act No. 500/2004, 
the Administrative C ode, as amended (hereinafter the "AC"), commenced ex officio proceedings  on 22 
July 2013  pursuant to § 46 of the AC, and based on supporting documents issues this:  
 
 
I. 
MEASURE OF A GENERAL  NATURE  
number : 0111 -OOP -C034-13 
reference no.  0313/ 004/13/Pos., 
 
stipulating metrological and technical requirements for specified measuring instruments , 
including test methods for verification of specified measuring instruments : 
“measuring instruments  and measuring systems for measuring liquefied gas flow”  
 
This measure  of a general nature stipulates metrological and technical requirements for measuring 
instruments  and measuring systems for measuring liquefied gas flow that are applied after they are 
placed on the market or put into operation during their verification. T hese requirements are in 
accordance with requirements of Government Order No. 464/2005, establishing technical Measure of a General Nature No . 0111 -OOP -C034-13 
2 requirements for measuring instruments, as amended (hereinafter the “Government Order on 
Measuring instruments ”) 1). 
For measuring instruments  and measuring systems for measuring liquefied gas flow whose type had 
been approved pursuant to the Metrology Act, i.e. prior to the implementation of Directive 
2004/22/EC of the European Parliament and of the Council into Czech legislation, verification is 
subject to metrological requirements that were applicable to their release  into circulation.  
1   Basic definitions  
For the purposes of this measure of a general nature, terminology and definitions contained in  VIM  
and VIML2), Annex  7 to the Government Orde r on Measuring instruments  and the following 
terminology and definitions apply:  
1.1 
measuring instruments  and measuring systems for measuring liquefied gas flow   
measuring instruments  for measuring the volume or mass flow of liquefied gases  
1.2  
liquefied gas dispenser  (hereinafter “ LPG  dispenser” ) 
a measuring system for fuelling motor vehicles, small boats and small airplanes with LPG (a mixture 
of propane and butane)  
1.3 
dispenser quick -release coupling  
a structural part of the dispenser that represents t he point where the liquid is considered dispensed or 
received  
1.4 
sales transaction  
a binding relationship where the result of measurement serves as a basis for the price to be paid, where 
one of the parties involved in the transaction relating to measurem ent is the customer, and all parties 
accept the result of measurement obtained at a given time and place  
2   Metrological requirements  
Metrological requirements are based on requirements of the Government Order on Measuring 
Instruments and on the requireme nts of recommendation OIML  R 117-1 - Dynamic measuring 
systems for liquids other than water. Part 1: Metrological and technical requirements3). 
During verification, measuring instruments are subject to metrological requirements that were 
applicable for the ir release  into circulation.  
                                                   
1) This government order implements Directive 2004/22/EC of the European Parliament and of the Council of 31 
March 2004 on measuring instruments , as amended,  into Czech legislation.  
2)  The International Vocabulary of Metrology - Basic and General Concepts and Associated Terms (VIM) and 
the International Vocabulary of Terms in Legal Metrology (VIML) are part of the “Terminology in the Area of 
Metrology”  technical harmonisation compendium  that is publicly available at www.unmz.cz  
3)   OIML R 117 -1 “Dynamic measuring systems for liquids other t han water, Part 1: Metrolog ical and technical 
requirements”  – publicly available at  www.oiml.org  Measure of a General Nature No.  0111 -OOP -C034-13 
3 2.1   Specified service conditions  
2.1.1    Ambient temperature range  
LPG dispensers must work properly over a range of ambient temperatures specified by the 
manufacturer as a service 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 each of its parts, especially the flow meter.  
The minimum required ratio Qmax : Qmin of an LPG dispenser is 5:1. 
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 su pply these liquids, for example density or viscosity range, temperature range, 
or pressure range.  
2.2   Measurement range   
2.2.1    Flow measurement range  
LPG dispensers must meet requirements for the maximum permitted error over the entire flow 
measurement  range specified by the manufacturer.  
 
2.2.2   Minimum measured quantity ( mmq )   
The minimum measured quantity of liquid the measurement of which the measuring system is 
intended is expressed in the form 1  × 10n, 2 × 10n or 5 × 10n volume or mass units of measurement, 
where n is a positive or negative whole number, or zero.  
An LPG dispenser’s minimum measured quantity must not be smaller than the largest of the minimum 
measured quantities of any of its parts.  
2.3    LPG  dispenser accuracy classification  
2.3.1    LPG  dispenser accuracy class  
For the dispensation of LPG, LPG dispensers of accuracy class 1.0 are used, engendered by  the 
maximum permitted error of the measurement system.  
2.3.2    Maximum permitted errors  
2.3.2.1     Table 1 gives maximum permitted  errors for volumes of two litres or more.  
Table  1 – Maximum permitted errors for V ≥ 2 litres  
 
 Maximum permitted error  
Measuring systems (A) (LPG dispensers)  1.0 % 
Measuring instruments (B) (independent measuring instruments as 
parts for use in a dispe nser)  0.6 % 
 Measure of a General Nature No . 0111 -OOP -C034-13 
4 2.3.2.2   Table 2 gives maximum permitted errors for volumes less than two litres.  
Table 2  – Maximum permitted errors for V < 2 litres  
 
Measured volume  V Maximum permitted error  
V < 0.1 l 4 × the value in Table 1 used for   0.1 l 
0.1 l ≤ V < 0.2 l 4 × the value in Table 1  
0.2 l ≤ V < 0.4 l 2 × the value in Table 1 used for 0.4  l 
0.4 l ≤ V < 1 l 2 × the value in Table 1  
1 l ≤ V < 2 l the value in Table 1 used for 2  l 
 
2.3.2.3     Regardless of the measured amount, the size of the maximum pe rmitted error is the larger of 
the following two values:  
a) the absolute value of the maximum permitted error listed in Table 1 or Table 2,  
b) the absolute value of the maximum permitted error for the smallest measured quantity Emin. 
2.3.2.4     For the smallest measurements equal to two litres or more, the following conditions apply:  
Condition  1: 
Emin must meet the condition: Emin ≥ 2R, where R is the smallest value scale value of the indication 
device.  
Condition  2: 
Emin is given by the relationship: Emin = (2mmq ) 
 (A/100), where mmq  is the smallest measured 
quantity and A is the numerical value for measuring systems (A) in Table 1. 
2.3.2.5    For the smallest measured quantities smaller than two litres, condition 1 above applies and 
Emin is equal to double the value listed in Table 2 for measuring systems (A) from Table 1.  
2.3.2.6     For a measuring system and individual measuring instruments, the maximum permitted error 
must not be misused, nor may one of the parties be given a systematic advantage.  
2.3.3     Maximum permitted error in use  
During verification of measuring instruments in use performed pursuant to § 11(4) of the Metro logy 
Act upon request by a party whose interests could be significantly damaged by incorrect measurement, 
the maximum permitted error during verification pursuant to Article 2.3.2 shall apply.  
2.3.4     Converted indicated datum  
In the case of a converted i ndicated datum, the maximum permitted error for measuring systems (A) in 
Table 1 applies.  
2.3.5     Conversion apparatus  
The maximum permitted error of converted indicated data caused by the conversion apparatus is equal 
to 
(A – B), where A and B are value s listed in Table 1.  
Parts of the conversion apparatus that can be tested separately:  Measure of a General Nature No.  0111 -OOP -C034-13 
5 a) Counter: the maximum permitted error of indicated values of characteristic values of liquid 
valid for calculation, positive or negative, is equal to one tenth of the maxi mum permitted 
error for measuring systems (A) in Table 1.  
b) Attached measuring instruments must have at least the same accuracy as given by the values 
in Table 3.  
Table  3 – Maximum permitted errors of attached measuring instruments  
Measured value  Maximum pe rmitted error  
Temperature  ±0.5 ºC 
Pressure less than MPa:  
  from  1 to 4 MPa:  
  greater than  4 MPa:  ±50 kPa 
±5 % 
±200  kPa 
Density  ±2 kg/m3 
NOTE:   These values apply to data for characteristic values of a liquid indicated by the 
conversion apparatus.  
 
a) Calculation function accuracy: the maximum permitted calculation error for each 
characteristic value of the liquid, positive or negative, is equal to two fifths of the value listed 
under letter b) for attached measuring instruments.  
 
3   Technical requireme nts 
Technical requirements are based on requirements of the Government Order on Measuring 
Instruments and on requirements of Recommendation OIML R 117 -1 Dynamic measuring systems for 
liquids other than water. Part 1: Metrological and technical requirements3). 
During verification, measuring instruments are subject to technical requirements that were applicable 
for their being placed into circulation.  
3.1    LPG  dispenser design  
A measuring system that comprises an LPG dispenser must consist of at least the f ollowing main 
parts:  
– a flow meter,  
– a counter,  
– a point of separation, usually a quick -release dispenser connector,  
– a differential valve,  
– a hydraulic circuit . 
For proper operation, the following may need to be connected to in the measuring system:  
– a filter,  
– a pump,  
– correction apparatus . 
The measuring system may be equipped with other auxiliary and supplementary devices required for 
proper LPG dispenser operation.  Measure of a General Nature No . 0111 -OOP -C034-13 
6 3.2    LPG  dispenser design requirements  
Other auxiliary devices may be part of the LPG dispenser  or measuring instrument counter or they 
may be connected to the counter via an interface.  
If only one fuelling quick -release connector can be used during dispensation, after it has been replaced 
on the dispenser, further dispensation must be blocked until  the indicator has been zeroed.  
If two or more fuelling quick -release connectors  can be used simultaneously or alternately, 
dispensation  of the liquid  must be blocked  after replacement of the fuelling quick -release connector  
until the indicator has been ze roed.  
If several measuring instruments have one indicator, it must be impossible to use more than one 
measuring instrument at once.  
It must be ensured that liquefied gas in the measuring system always remains in a liquid state. This 
requirement is usually met using apparatus to maintain pressure, for example a differential valve.  
The temperature must be measure d and an adequate temperature measurement apparatus provided.  
If a device to maintain pressure is used, the system must provide means for  liquid pres sure 
measurement. The pressure gauge must be installed near the flow meter and in front of the apparatus 
to maintain pressure. It must be possible to verify this pressure gauge, and it must be possible to seal it 
after verification.  
If there is an attached  gas indicator, the LPG dispenser must not contain a ventilation apparatus.  
A connection between the gaseous phase in the supply tank and the vehicle tank is not allowed.  
In addition, in cases where the flow of liquid is stopped for emergency purposes for more than 2 
minutes, dispensation of liquid must stop, and the indicator must be zeroed prior to further 
dispensation.  
There must be a one -way valve between the gas separator and the measuring instrument. The pressure 
reduction caused by the one -way valve must be sufficiently small to be considered negligible.  
There must be a one -way valve after the measuring instrument. The pressure reduction caused by the 
one-way valve must be sufficiently small to be considered negligible.  
Hoses must be equipped with a s pecial connector for “full hoses”, i.e. a self -sealing valve.  
Safety features must not affect the metrological functions of the measuring system.  
The design of the fuelling quick -release connector must ensure that at the moment of connection or 
disconnecti on, the amount of liquid that leaks out does not exceed the smallest specified volume 
deviation Emin. 
If the measuring system is equipped with conversion apparatus, it must be possible to separately verify 
the indicated amount dispensed under conditions of  measurement and a connected measuring 
instrument.  
The dispenser may have its own supply of the measured liquid or it may be intended for installation 
into a central supply system.  
An LPG dispenser must be equipped with a zeroing device for the volume cou nter and the aggregate 
volume counter.  
If it also contains a price counter, it must be possible to zero it.  
Price and volume counter zeroing devices must be arranged so that the zeroing of one automatically 
leads to the zeroing of the other . 
It must be imp ossible to zero the volume and price counter during dispensation.  
It must be impossible to start a new measurement if the counters are not zeroed.  Measure of a General Nature No.  0111 -OOP -C034-13 
7 If an LPG dispenser has its own supply of the measured liquid propelled by an electrical motor, it must 
be eq uipped with a device that after the electrical motor stops prevents any further dispensation of fuel 
until the volume counter has been zeroed.  
3.3    Self-serve arrangement with LPG dispensers  
Information provided by the dispenser must remain available to the parties involved in the sales 
transaction until the latter  has been settled.  
If a self -serve arrangement serves for two or more dispensers, each of them must have an 
identification number that is part of each piece of data that the self -serve dispenser  provides. In a self -
serve arrangement, data on the indication device of the dispenser, the printer and the memory device 
display must not differ.  
The self -serve arrangement’s printer must not reproduce data from the LPG dispenser as the difference 
between  two printed values.  
The manner of payment and/or operating mode must not change prior to the end of the current 
measurement. The self -serve arrangement, including conditions clearly specifying operating methods, 
must be designed so that the customer has a ccess to at least one primary datum from the LPG 
dispenser for the customer, at least until the end of the transaction, so that the customer can check the 
dispensed amount and price. If the self -serve arrangement summarises dispensed volumes of liquid on 
an on-going basis for various registered customers, the value of the scale division used for these sums 
must not have an effect on the smallest measured quantity.  
3.4   Full service mode  
If the measured data is displayed only on the LPG dispenser indicator,  this indicator must be labelled 
with information clearly visible to the customer to the effect that this dispenser may be made available 
only by the operator after the current sales transaction has been completed, and that in the case of a 
dispute the inf ormation on the indicator is considered to be correct.  
In full service mode, the transaction is settled prior to the customer leaving the dispensing location. 
The measurement operation ends at the moment the transaction has been settled.  
3.5   Protection f rom unauthorised manipulation  
The LPG dispenser has the required number of places for official seals.  
The LPG dispenser is designed so that the measuring instrument or indicator cannot be tampered  with 
in a way that could affect the accuracy of measurement  without visible damage to an official seal.  
 
4   Labelling  
4.1    LPG  dispenser labelling  
Each LPG dispenser must have at least the following information on a special label:  
– the manufacturer’s name or brand;  
– the dispenser type;  
– the serial number and year of manufacture;  
– minimum flow Qmin and maximum flow Qmax; 
– minimum (if needed) and maximum operating pressure;  
– smallest measured volume;   
– the name or type of measured liquid, or the range of relevant characteristics;  Measure of a General Nature No . 0111 -OOP -C034-13 
8 – the minimum and maximum temperature of th e measured liquid;  
– the minimum and maximum ambient temperature;  
– the mechanical and electromagnetic class of the ambient environment;  
– the nominal AC voltage value and the limit DC voltage value;  
– accuracy class;  
– the number of the type approval certificate, i f one exists, or indication of conformance;  
– identification of the positions of individual dispensing locations.  
This label must be firmly affixed to the chassis of the dispenser in a visible location and sealed.  
All information on the label on the dispense r must be legible.  
4.2    Labelling of LPG dispenser parts  
Each separate metrologically relevant part of an LPG dispenser, such as the flow sensor, measurement 
transducer, counter or indicator contains (for example on another label) the following informati on: 
– the serial number;  
– the manufacturer’s name or brand;  
– the number of the type approval certificate, if one exists;  
– other relevant characteristics .  
– All information on the label on the part must be indelible, irremovable and legible.  
4.3   Indicator label ling 
The indicator must contain the following information:  
– the unit “Litre” or the symbol “L”, “l” or “dm3” after the amount indication;  
– the unit of national currency (Kč) near the indication of price to be paid;  
– the unit, for example. “Kč/L”, “Kč/Litre” o r “Kč/dm3” near the unit price indication.  
Information on the minimum measured quantity must be stated near the indicator.  
If the conversion function is active and the amount under basic conditions is displayed, the 
measurement result must be accompanied b y this information, for example “volume at 15  °C”. 
4.4   Recordkeeping  
In the case of LPG dispensers, records of specified measuring instruments must be kept pursuant to § 
18(a) of the Metrology Act in the form of record sheets. A record sheet is a documen t that is intended 
for the recording of technical information on the dispenser that is not provided on the label, primarily 
the serial numbers of individual parts.  
Each subsystem replacement, repair, servicing or verification of the measuring instrument is  recorded 
in this document, which is provided during dispenser verification.  
 
5   Measuring instrument type approval  
LPP dispensers are placed on the market and into operation with a conformance appraisal pursuant to 
the Government Order on Measuring Instr uments, 2) and thus are not subject to type approval.  Measure of a General Nature No.  0111 -OOP -C034-13 
9 6.   Initial verification  
These measuring instruments are placed on the market and into operation with a conformance 
appraisal pursuant to the Government Order on Measuring Instruments.  
Initial verifica tion applies only to measuring instruments that at the given time have a valid type 
approval certificate with the utilisation of transitory provisions pursuant to § 9 of the Government 
Order on Measuring Instruments, and to verification of measuring instru ments following repairs.  
The procedure used during initial verification is the same as that for subsequent verification pursuant 
to Chapter 7.  
7   Subsequent verification  
7.1   In general  
During subsequent verification, i.e. each verification of the measu ring instrument performed after a 
prior verification and during verification pursuant to § 11(4) of the Metrology Act, the following 
activities and tests are performed:  
b) a visual inspection,  
c) a preliminary service test,  
d) an accuracy test,  
e) a test of auxiliary and supplementary devices.  
For LPG dispensers with several independent dispensing locations (multiproduct dispensers), all 
dispensing locations are tested separately, and these tests are evaluated individually. LPG dispensers 
with two ranges are first veri fied for the lower range and then the test is extended by a test of the 
highest achievable flow rate.  
In the case of two flow sensors being installed in parallel, both flow sensors are first tested separately, 
and then a test of the entire system is perfor med (parallel connection) at all three stipulated flow rates.  
LPG dispensers with one hydraulic measuring part and several dispensing (satellite) locations will be 
tested according to a regular test programme, and at the end a test at the maximum achievabl e flow 
rate will be performed from each other dispensing location (from each satellite quick -release 
connector).  
LPG dispensers are tested with the liquid they are intended to measure.  
7.2   Test equipment  
Test equipment used to perform accuracy tests must  have an extended uncertainty of measurement less 
than 1/5 of the maximum permitted error pursuant to Article 2.3.2.1.  
7.3   Visual inspection  
The following is assessed during a visual inspection of an LPG dispenser:  
– whether the measuring instrument submit ted for verification and its parts conform to the 
approved type or with the design of a measuring instrument for which conformity has been 
declared during market introduction, and attention must be paid to checking labelling pursuant 
to Chapter 4;  
– whether the measuring instruments and its parts, including rubber hoses, are not physically 
damaged or that metal parts do not show signs of corrosion.  
If the measuring instrument does not meet visual inspection requirements, no further tests are 
performed.  Measure of a General Nature No . 0111 -OOP -C034-13 
10 7.4   Preliminary service test  
A preliminary service test involves checking that the measuring instrument is acting and working 
correctly, and that the counter, auxiliary devices and closure fittings are working.  
7.5    LPG  dispenser accuracy test  
An accuracy te st of an LPG dispenser and its measuring instruments is performed using the volume 
method, by dispensing a specified amount of liquid into a reference measuring instrument connected 
in series at a specified flow rate.  
Test flow rates are specified accordin g to the following relationships:  
– Q1 = (1 to 1.1) × Qmin, 
– Q2 = (0.22 to 0.28) × Qmax, 
– Q3 = (0.6 to 1) × Qmax. 
At each of the three test flow rates, measurement errors for the tested LPG dispenser are calculated. 
The test is repeated at least twice for each  flow rate.  
The amount of liquid used during the accuracy test must be at least:  
– 10 dm3 at a flow rate of  Q1, 
– 20 dm3 at a flow rate of  Q2 , 
– 30 dm3 at a flow rate of  Q3. 
The test amount of liquid corresponds to at least the amount that flows through at the given flow rate 
in 1 minute.  
The LPG dispenser has passed the accuracy test if none of the relative deviations of the indicated 
volume exceed the maximum permitted error listed in Article 2.3.2.  
If all true measurement errors have the same sign, in order t o meet requirements of Article 2.3.2.6, at 
least one of the measurement errors at a typical flow rate between 0.25 Qmax and Qmax must be less than 
half the maximum permitted error.  
7.6   Tests of auxiliary and supplementary devices  
Correct functioning of au xiliary and supplementary devices is checked, if the LPG dispenser is 
equipped with them. The relevant test is performed only once. Tests of auxiliary and supplementary 
devices may be combined with the accuracy test. The following tests are performed if th ey are relevant 
to the LPG dispenser and the device is used for obligation relationships.  
7.6.1   Zeroing test  
The volume counter values and if applicable the price values are read after the LPG dispenser has been 
zeroed.  
The residual indicated value after  zeroing must not be greater than half the minimum specified volume 
deviation Emin for counters with continuous display.  
Counters with discrete display must indicate zero after being zeroed, without any ambiguity.  
7.6.2   Aggregate counter test  
The differe nce between the figure on the aggregate counter and the figure on the indication device that 
apply to the same measurement is specified. The figure on the aggregate counter is specified at the 
difference between its initial and final state.  
The difference between this these figures must not be more than one increment of the aggregate 
counter.  Measure of a General Nature No.  0111 -OOP -C034-13 
11 7.6.3   Price counter test  
For LPG dispensers with a mechanical counter, the test must be performed for at least two unit prices 
at maximum and minimum counter rotatio n rates.  
For LPG dispensers with an electronic 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 LPG dispenser verification, th e test is performed only for the unit price currently in use.  
The deviation of the indicated price must not be greater than the price corresponding to Emin, or the 
smallest unit of currency.  
7.6.4   Auxiliary volume counter test  
Figures indicated by auxili ary volume counters are compared with figures on the indicator, applying to 
the same measurement.  
The figures must not differ from each other by more than one division of the scale that is the largest of 
the divisions of scales of devices being compared.  
7.6.5   Preset test  
Measurement is performed using a volume or price preset, and the difference between the preset 
amount and the amount indicated by the volume or price counter at the end of the measurement is 
determined.  
For measuring instruments in prepa id or pre -ordered mode, this difference must not exceed the 
minimum specified volume deviation Emin or the price corresponding to this deviation.  
7.5.6     Self-service facility test  
A measured quantity is taken using the self -service facility and the diffe rence between the preset 
amount and the amount indicated by the volume or price counter at the end of the measurement is 
determined.  
The results must not differ from each other. For measuring instruments in prepaid or pre -ordered 
mode, preset requirements also apply to the self -service facility.  
7.5.7    Printer test  
Figures from the printer are compared with figures on the indicator that apply to the same 
measurement.  
These figures must not differ from one an other by more than one division of the indicator.  
7.6.8   Attached thermometer test  
If the LPG dispenser is equipped with a thermometer, during the test, the deviation of the attached 
thermometer at three temperatures is determined: Tmin, 15 °C and Tmax. 
During a test of the thermometer as a whole, which  is composed of a temperature sensor and an 
electronic transducer, the ascertained deviations of the attached thermometer must not exceed the value 
of the maximum permitted error ±0.5  °C.  
During a test of the thermometer where the temperature sensor and t he electronic transducer are tested 
separately, the ascertained deviations of the temperature sensor must not exceed the value of the 
maximum permitted error ±0.4  °C, and the ascertained deviations of the electronic transducer must not 
exceed the value of the maximum permitted error ±0.3  °C. Measure of a General Nature No . 0111 -OOP -C034-13 
12 7.6.9   Conversion apparatus test  
If the LPG dispenser is equipped with a thermometer, during the test, the accuracy of the conversion 
apparatus is tested at three temperatures of the test liquid: Tmin, 15 °C and Tmax, simulated using signals  
The ascertained relative deviation of indicated volume Ebv at a base temperature of 15 °C must not 
exceed the value of the maximum permitted error ±0.5  °C. 
If the measured volume Vn is simulated using measurement signals, the relati ve deviation Ebv in indicated 
volume at the base temperature must not exceed the maximum permitted error of the conversion apparatus 
±0,2 %. 
8   Notified standards  
To specify metrological and technical requirements for measuring devices and to specify veri fication 
test methods stemming from this measure of a general nature, the CMI notifies Czech technical 
standards, other technical standards or technical documents of international or foreign organisations or 
other technical documents containing detailed te chnical requirements (hereinafter "notified 
standards"). The CMI shall publish a list of these notified standards, with their assignation to relevant 
measures, along with the measure of a general nature, in a manner available to the public (on the 
website www.cmi.cz).  
Compliance with notified standards or parts thereof is considered to be, to the extent and under the 
conditions stipulated by a measure of a general nature, to be compliance with those requirements 
stipulated by this measure to which these sta ndards or parts thereof apply.  
 
 Measure of a General Nature No.  0111 -OOP -C034-13 
13 II. 
RATIONALE  
The CMI issues, towards the implementation of § 24c of the Metrology Act, this measure of a general 
nature, stipulating metrological and technical requirements for specified measuring instruments and 
test meth ods for verification of these specified measuring instruments.  
In Decree No 345/2002, specifying measuring instruments for mandatory verification and measuring 
instruments subject to type approval, as amended, the annex "List of Specified Measuring Device 
Types" classifies measuring instruments and measuring systems for measuring liquefied gas flow 
under item 1.3.13 as measuring instruments subject to verification.  
The CMI thus issues, towards the implementation of § 24c of the Metrology Act for the measuri ng 
instrument type specified as “ measuring instruments and measuring systems for measuring liquefied 
gas flow ”, this measure of a general nature, stipulating metrological and technical requirements for 
measuring instruments and measuring systems for measur ing liquefied gas flow  for verification of 
these specified measuring instruments.  
This regulation (Measure of a General Nature) has been notified in accordance with Directive 
98/34/EC of the European Parliament and of the Council of 22 June 1998 laying dow n a procedure for 
the provision of information in the field of technical standards and regulations, as amended by 
Directive 98/48/EC.  
 
III. 
INSTRUCTIONS  
A measure of a general nature cannot be appealed: § 173(2) of the Administrative Code.  
Pursuant to § 172(5) of the Administrative Code, a decision on objections cannot be appealed.  
Conformance of a measure of a general nature with legislation can be judged in review proceedings 
pursuant to § 94 to 96 of the Administrative Code. A participant may ask the administrative body that 
issued this measure of a general nature to perform a review. If the administrative body does not see any 
reason to commence review proceedings, it shall inform the sub mitter of this fact within thirty days, 
giving reasons. Pursuant to § 174(2) of the Administrative Code, a ruling on the commencement of 
review proceedings can be issued within three years of the effective date of the measure of a general 
nature.  
 
 
IV. 
EFF ECTIVE DATE  
This measure of a general nature takes effect on the fifteenth day following the day of its publication  
(§ 24d of the Metrology Act).  
 
 
 
 ...…………………………..............  
 RNDr. Pavel Klenovský  
 Director General  Measure of a General Nature No . 0111 -OOP -C034-13 
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