Czech Metrology Institute  
Okružní 31, 638 00 Brno  
 
 
1. ------IND- 2018 0342 CZ - EN- ------ 20180803 --- --- PROJET 
Executive summary for the EC (not part of this legislation)  
Non-spectrometric activity meters and dosimeters used to monitor compliance with limits in the area 
of radiation protection or nuclear safety and for emergency measurement - portable dosimetric 
gamma radiation and X -ray meters used for purposes of radiatio n protection – are placed on the 
market and put into use in the Czech Republic pursuant to Act No 505/1990 on metrology, as 
amended.  
The purpose of this notified regulation is to lay down metrological and technical requirements for 
these measuring instrum ents. This regulation also stipulates tests for type approval and verification.  
(End of executive summary)  
 
Author: Tomáš Hendrych  
Telephone: +420 545 555 414  
 
 
PUBLIC DECREE  
 
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 for type approval and verification of legally controlled measuring instruments pursuant to 
§ 14(1) of Act No  505/1990 on m etrology, 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 (herei nafter referred to as the 
‘CMI’) commenced ex officio proceedings on 4 April 2017 pursuant to §  46 APC, and, on the basis of 
supporting documents, issues the following:  
 
I. 
DRAFT GENERAL MEASUR E 
number: 0111 -OOP -C081 -16 
laying down the metrological and tec hnical requirements for legally controlled measuring 
instruments, including testing methods for verification of the following legally controlled 
measuring instruments:  
 
‘non -spectrometric activity meters and dosimeters used to monitor compliance with limits in the 
area of radiation protection or nuclear safety and for emergency measurement - portable 
dosimetric gamma radiation and X -ray meters used for purposes of radiation protection’  General Measure No 0111 -OOP -C081 -16 
 
2 1. Basic definitions  
For the purposes of this general measure, term s and definitions pursuant to VIM and VIML1 and the 
following shall apply:  
1.1 
spatial dose equivalent H*(10)  
a dose equivalent that would be created by a corresponding ordered, expanded and rectilinear field at a 
depth of 10 mm in the ICRU sphere at the radius opposite the direction of the array.   
The spatial dose equivalent unit is Sv (J/kg).  
1.2 
spatial dose equivalent input 
)10(*H  
quotient d H *(10)/d t, where d H*(10) is the increment of the spatial dose equivalent in the time interval 
dt. 
The spatial dose equivalent input unit is Sv/s (Sv/min; Sv/h).  
1.3 
directional dose equivalent H´(0.07)  
a dose equivalent that would be created in a corresponding expanded and rectilinear field in an ICRU 
sphere at a depth of 0.07 mm on the radius of vec tor-specified field direction.   
The directional dose equivalent unit is Sv.  
1.4 
directional dose equivalent input 
)07,0´(H  
quotient d H’(0.07)/d t, where d H’(0.07) is the increment of the directional dose equivalent in the time 
interval d t.  
The directional dose equivalent input unit is Sv/s (Sv/min; Sv/h).  
1.5 
reference point of the measuring instrument  
physical mark or marks on the external surface of the measuring instrument for placing the measuring 
instrument at the test point.  
1.6 
test po int 
the point where the reference value of the measured figure is determined and where the reference point 
of the measuring instrument is placed for testing purposes.  
1.7 
measuring instrument response  
response for the reference value of the figure Hr,0 measured under specific conditions  
                                                      
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 available at www.unmz.cz.  General Measure No 0111 -OOP -C081 -16 
 
3 
0,0,
0
rr
HGR (1) 
where Gr,0 is the suitable figure of the measuring instrument.  
1.8 
reference response  
the ratio given under reference conditions by the relationship:  
HGR
 (2) 
where G is the figure of the measuring instrument and H is the reference value of the measurement 
figure for the reference conditions.  
1.9 
relative response  
ratio of response R and reference response R0: 
HGR
 (3) 
where G is the figure of the measuring instrument and H is the reference value of the figure.  
1.10 
effective measuring range  
range of measured values of the figure that meets the requirements of the standard.  
1.11 
lower limit of the effective measuring range H0 
lowest value of the dose equivalent or its input that applies to the effective measuring range.  
1.12 
variation coefficient v 
rate of relative data dispersion determined as a percentage of the standard deviation to the arithmetic 
mean in per cent.  
2 Metrological requirements  
2.1 Categorisation of measuring instruments  
The categorisation of measuring instruments is stated in Table 1.  
Table 1 – Categorisation of measuring instruments  
Main 
category  Symbol  Minimum required 
range of use  Energy range  For ra nge of 
angles  For dose 
equivalent 
impact  For dose 
equivalent  
H*(10)  
gamma 
radiation  G energy:  
80 keV to 1.5 MeV  
angle:  
-45 ° to +45 °  
dose equivalent 
impact:  m:  
lower limit 60 
keV 
l:  
lower limit 20 
keV w:  
-90 ° to +90 °  a:  
upper limit  
10 Sv/h  
e: 
lower limit  
0.03 µSv/h  a: 
upper limit  
2 Sv 
f: 
lower limit  
10 µSv  General Measure No 0111 -OOP -C081 -16 
 
4 3 ranges in total  
10 µSv/h  
dose equivalent:  
3 ranges in total  
0.1 mSv  h:  
total 6 MeV  k: 
lower limit  
0.1 µSv  
H*(10)  
X 
radiation  X energy:  
20 keV to 150 keV  
angle:  
-45 ° to +45 °  
dose equivalent 
impact:  
3 ranges in total  
10 µSv/h  
dose equivalent:  
3 ranges in total  
0.1 mSv  l:  
lower limit 10 
keV 
h:  
total 300 keV  w:  
-90 ° to +90 °  a:  
upper limit  
10 Sv/h  
e: 
lower limit  
0.03 µSv/h  a: 
upper limit  
2 Sv 
f: 
lower limit  
10 µSv  
k: 
lower limit  
0.1 µSv  
continued  
 
Table 1 – continued  
Main 
category  Symbol  Minimum required 
range of use  Energy range  For range of 
angles  For dose 
equivalent 
impact  For dose 
equivalent  
H´(0.07)  
gamma 
and X 
radiation  S energy:  
20 keV to 150 keV  
dose equivalent 
impact:  
3 ranges in total  
10 µSv/h  
dose equivalent:  
3 ranges in total  
0.1 mSv  h:  
total 300 keV  
u:  
total 1.3 MeV   a:  
upper limit  
10 Sv/h  
e: 
lower limit  
0.5 µSv/h  a: 
upper limit  
2 Sv 
f: 
lower limit  
10 µSv  
 
2.2 Reference conditions and standard test conditions  
The reference conditions and standard test conditions are listed in Table 2.  
Table 2 – Reference conditions and standard test conditions  
Influencing variable  Reference conditions  
(unless otherwise specified by the 
manufacturer)  Standard test conditions  
(unless otherwise specified by the 
manufacturer)  
Photon radiation energy for:  
1 − H*(10) – spatial dose 
equivalent  
2 − H´(0.07) – directional dose 
equivalent  gamma radiation:  
137Cs or N -100  
 
N-80 or 241Am  gamma radiation:  
137Cs or N -100  
 
N-80 or 241Am  
Beta radiation energy  
2 − H´(0.07) – directional dose 
equivalent   
90Sr/90Y   
90Sr/90Y  General Measure No 0111 -OOP -C081 -16 
 
5 Dose equivalent  
H*(10)  
H´(0.07)   
100 µSv  
100 µSv   
10 µSv to 1 mSv a) 
10 µSv to 1 mSv a) 
Dose equivalent impact  
H*(10)  
H´(0.07)   
10 µSv/h  
100 µSv/h   
3 µSv/h to 100 µSv/h a) 
10 µSv/h to 1 mSv/h a) 
Stabilisation period  15 minutes  ≥15 minutes  
Heat  20 °C  17 °C to 27 °C a) 
Relative humidity  65 %  25 % to 75 % a) 
Air pressure  101.3 kPa  86.0 kPa to 106.6 kPa a) 
Power voltage  Nominal power voltage  Nominal power voltage ±1 %  
Radiation impact angle  calibration direction provided by the 
manufacturer  Designated direction ±5 °  
External electromagnetic field  negligible  less than the smallest value that causes 
the fault  
External magnetic induction  negligible  less than twice the Earth's magnetic 
field value  
continued  
Table 2 – continued  
Influencing variable  Reference conditions  
(unless otherwise specified by the 
manufacturer)  Standard test conditions  
(unless otherwise specified by the 
manufacturer)  
Orientation of measuring 
instrument or dose equivalent 
(impact) monitor  to be specified by the manufacturer  specified orientation ± 5 °  
Control of measuring 
instrument or dose equivalent 
(impact) monitor  settings for normal mode  settings for normal mode 
Radiation background  0.1 μSv/h or less if appropriate  less than 0.25 µSv/h  
Radioactive particle 
contamination  negligible  negligible  
a) The actual value is determined in the test  
2.3 Largest permissible error  
2.3.1 Linearity of response  
Under standard conditions, the relative response of the measuring instrument across the effective 
measuring range must not exceed −15 % to +22 %.  
2.3.2 Statistical fluctuation of response  
Under standard conditions, the variation coefficient throughout the  measuring range must not exceed:  
for H = H 0 15 %  
for H 0 < H < 11 H 0 (16 − H/H 0) % 
for H ≥ 11 H 0 5 % General Measure No 0111 -OOP -C081 -16 
 
6 2.3.3 Energy and direction dependence of response  
The relative response of the measuring instrument caused by the angle of incidence of radiation in the  
range of angles from 0 ° to ± 45 ° (relative to the reference radiation direction) and in the energy range:  
10 to 250 keV (for H´(0,07) and X radiation), or  
30 to 150 keV (for H*(10) and X radiation), or  
80 keV to 1.5 MeV (for H*(10) and X radiation and gamma)  
must be in the range from −29 % to +67 %.  
2.3.4 Overloading  
The measuring instrument must indicate overloading when the upper limit of the measuring range is 
exceeded. This requirement applies to al l measuring ranges.  
If a dose equivalent measuring instrument is exposed to a sufficiently high dose equivalent impact, 
which may cause an incorrect measuring instrument readout, the measuring instrument must indicate 
that it is unable to provide the corre ct data.  
2.3.5 Period of response  
The period of response is understood to be the period after which, in the event of a sudden increase or 
drop in the dose equivalent impact, the measuring instrument reading of the dose equivalent impact [ Ii 
+ 0,9 ( If - Ii)] is reached, where Ii is the initial figure of the dose equivalent impact and If is the final 
figure of the dose equivalent impact. The required response time limits for the measuring instrument are 
shown in Table 3.  
Table 3 – Requirements for the measuring instrument response time  
Dose equivalent impact  Period of response (s) 
1 µSv/h to 10 mSv/h  <10 
>10 mSv/h  <2 
If the dose equivalent of the measuring instrument is exposed to the dose equivalent impact, it must 
indicate a 91 % to 111 % increase in the dose equivalent within 10 seconds.  
2.3.6 Signalling of exceeding the set level  
Under standard conditions, the measuring instrument must not be exposed to 0.8 times the set value 
and must indicate if this value has been exceeded. A measuring instrum ent exposed to 1.2 times the set 
value must indicate that this value has been exceeded.  
If the measuring instrument is equipped with multiple detectors, the requirements apply to each detector.  
2.3.7 Resistance to mechanical shock  
If the measuring instrum ent is subject to mechanical impacts during operation, the response -induced 
shock response is less than ±0.7 Ho (lower limit of the effective measuring range). There must be no 
mechanical damage and the information stored in the measuring instrument must n ot be lost.  
2.3.8 Resistance to falls during transport  
The measuring instrument packed for transport must be crash -proof. During a fall, there must be no 
mechanical damage to the measuring instrument and it must function normally when activated.  General Measure No 0111 -OOP -C081 -16 
 
7 2.3.9 Ambi ent temperature  
Changes in the measuring instrument's response caused by changing the ambient temperature in the 
range from −10  °C to +40  °C must not exceed −13 % to +18 % of the measuring instrument's response 
under standard test conditions. For measuring  instruments intended for indoor use only, this requirement 
is valid in the temperature range from +5 ° C to +40 ° C. Such measuring instruments must be marked, 
for example, with the text ‘indoor use only’.  
2.3.10 Relative humidity  
Changes in the measuring  instrument's response caused by changing the ambient humidity in the range 
of up to 85 % must not exceed -9 % to +11 % of the measuring instrument's response under standard 
test conditions.  
2.3.11 Atmospheric pressure  
Changes in the measuring instrument's  response caused by changing the atmospheric pressure in the 
range from 70.0  kPa to 106.0  kPa must not exceed -9 % to +11 % of the measuring instrument's response 
under standard test conditions.  
2.3.12 Shielding  
For measuring instruments intended for outdoor environments, the shielding of the measuring 
instrument must be at least IP 53.  
2.3.13 Resistance to electromagnetic interference  
The maximum change in response (transient and permanent) induced by electromagnetic interference 
must not exceed ± 0.7 Ho (lower limit of the effective measuring range).  
2.3.14 Power supply test  
Portable measuring instruments of the dose equivalent (impac t) must have battery power. The capacity 
of the batteries must be such that for a maximum of 40 hours of alternating use (i.e. 8 hours of continuous 
use followed by 16 hours deactivated for 5 consecutive days) the maximum readings of the measuring 
instrume nt are within ± 5 % and the other functions remain within the limit specifications.  
3 Technical requirements  
3.1 Unit indication  
The measuring instrument of the dose equivalent or its impact must display a value in Sv or Sv/h.  
3.2 Minimum measuring range  
The minimum effective measuring range of the measuring instrument of the dose equivalent impact 
must cover at least three digital places and include 10 μSv/h (in the case of H*(10)) or 0.1 mSv/h (in the 
case of quantity H'(0.07)). The minimum effective mea suring range of the measuring instrument of the 
dose equivalent must cover at least three digit places and include 0.1 mSv.  
3.3 Operating status information  
The measuring instrument must indicate operating conditions for which the accuracy of the dose 
equivalent figure is not guaranteed, such as a dead battery, a detector failure or the dose equivalent 
impact being exceeded.  
3.4 Easy decontamination  
The measuring instrument must be designed to enable easy decontamination.  General Measure No 0111 -OOP -C081 -16 
 
8 3.5 Protection against unauthorise d tampering  
The measuring instrument must be designed to prevent unintentional changes to any factor of the 
operation settings. The parts of the measuring instrument essential to its metrological characteristics 
must be designed to be secured in such a way  as to provide proof of any unauthorised interference. The 
control elements must either be inside the measuring instrument and inaccessible from the outside 
without using tools, or be clearly marked and fitted with a scale so that they can be precisely adj usted 
according to the resolution of the measuring instrument and then locked in order for the settings not to 
be changed accidentally. Correction factors and calibration coefficients stored digitally may not be 
changed unless the operator enters the secur ity code (or password) or changes the position of the blocked 
or inaccessible switch.  
3.6 Safety  
The measuring instrument must be safe in accordance with the basic principles of safety of ionising 
radiation installations and the requirements of relevant te chnical regulations under the conditions of 
normal use for the intended purposes.  
4 Measuring instrument markings  
4.1 Markings on the measuring instrument  
The following information must be provided on each part of the measuring instrument, which may 
consist of two functionally separate parts:  
Manufacturer identification;  
Designation of the type of measuring instrument;  
Serial number of the measuring instrument itself and assessment of the measuring unit;  
Type approval mark;  
Measured quantity and type of radiation;  
Effective measuring range.  
The position of the reference point must be indicated on the measuring instrument. The type and polarity 
of the batteries used must be indicated on the measuring instrument. All labels and inscriptions must be 
legib le, durable, unambiguous and unalterable.  
4.2 Placement of the official mark  
The placement of official marks on the measuring instrument and the assessment unit is specified in the 
type approval certificate.  
Where possible, marks are to be placed on the f ront panel of the display unit so that they do not cover 
any of the data on the measuring instrument.  
5 Type approval of the measuring instrument  
5.1 General  
The measuring instrument type approval process includes the following tests:  
a) External inspection;  
b) Linearity test and statistical fluctuation of response;  
c) Energy and direction dependence of response test;  
d) Overload resistance test;  General Measure No 0111 -OOP -C081 -16 
 
9 e) Response time test;  
f) Accuracy test for set level exceedance signalling;  
g) Stabilisation period test;  
h) Mechanical resistance test ; 
i) Tests of resistance to climatic influences;  
j) EMC tests;  
k) Power supply test.  
5.2 External inspection  
The external inspection assesses  
a) the completeness of the prescribed technical documentation, including the operating instructions;  
b) the conformity of the met rological and technical characteristics specified by the manufacturer in 
the documentation with the requirements of this regulation set out in chapters 2, 3 and 4.1;  
c) the completeness and status of the functional units of the measuring instrument according to the 
prescribed technical documentation;  
d) the software version of the measuring instrument with the version specified by the manufacturer.  
5.3 Functional tests  
5.3.1 Linearity test and statistical fluctuation of response  
The linearity test is performed by  irradiating the measuring instrument in a collimated gamma or X beam 
with reproducible geometry and field size. The measured value, determined as the arithmetic mean of 
at least ten statistically independent measurements, is compared with the reference va lue of the measured 
value determined by the standard. The test is performed at three test points for each decile of the 
measuring range (at 20  %, 40 % and 80 % of the decile).  
The deviations of the measured values from the reference value must not exceed t he limits in Article 
2.3.1.  
The test of the statistical fluctuation of the response is carried out simultaneously with the linearity test. 
A variation coefficient is established at all test points.  
The variation coefficient must not exceed the limits specified in Article 2.3.2 more than 1.5 times. (The 
specific value of the admissible multiple is determined by the actual number of test points and the actual 
number of measurements.)  
5.3.2 Energy and direction dependence of response test  
The energy depen dence response test is performed by irradiating the measuring instrument in the 
collimated X and gamma beam with reproducible geometry and a field size in the required energy range 
and the required range of angles. The measured value, determined as the ari thmetic mean of at least ten 
measurements, is compared with the value of the measured value determined by the standard for 
reference values.  
The measured value must not exceed the limits specified in Articles 2.3.3.  
5.3.3 Overload resistance test  
The overl oad resistance test consists of subjecting the measuring instrument to a dose equivalent 
(impact) value that is a multiple of the upper limit of the measuring range (a specific value for the 
multiplication is determined by the actual upper limit of the mea suring range of the measuring 
instrument). When the measuring instrument is irradiated in a collimated gamma beam with 
reproducible geometry and field size, the measuring instrument must indicate an overload. After General Measure No 0111 -OOP -C081 -16 
 
10 removing the radiation source, the measur ing instrument should return to the normal measurement mode 
within 5 minutes or display a warning that this is not possible.  
The overload measuring instrument must comply with the requirements of Article 2.3.4.  
5.3.4 Response time test  
The response time of  the measuring instrument test is performed by irradiating the measuring instrument 
in a collimated gamma beam with reproducible geometry and field size. The measuring instrument of 
the dose equivalent is exposed to different dose impact values for 10 seco nds and then the measuring 
instrument readings are compared with the reference value of the dose equivalent.  
The figure shown on the measuring instrument must not exceed the limits specified in Article 2.3.5.  
The dose equivalent measuring instrument is ex posed to varying rates of increase or decrease in the dose 
equivalent impact, recording the time at which the measuring instrument response reaches 90 % of the 
change in the reference value of the dose equivalent impact.  
The response time of the measuring instrument must not exceed the limits specified in Article 2.3.5.  
5.3.5 Accuracy test for set level exceedance signalling  
The accuracy test for set level exceedance signalling is performed by irradiating the measuring 
instrument in a collimated gamma beam with reproducible geometry and field size. The test must be 
performed at the test point near the upper limit of the effective measuring range and at the test point near 
the second lowest digit of the effective measuring range.  
The dose equivalent measurin g instrument is exposed to such a dose equivalent impact that signalling 
does not occur for at least 100 seconds, and the time when the measuring instrument starts to signal the 
exceeded level is measured. The ratio of the set signalling level to the produ ct of the irradiation time 
and the dose impact used must lie within a range from 0.8 (1 − Urel) to 1.2 (1 − Urel), where Urel is the 
common ( k = 2) uncertainty of the conventionally true value of the dose equivalent  
The measuring instrument of the dose eq uivalent is exposed (0.8 - Urel) times the set value of the dose 
equivalent impact over a period of 10 minutes, and the total time over which the measuring instrument 
signals the exceedance of the set level is measured. This period must not be any longer t han 10 minutes. 
The measuring instrument is further exposed to (1.2 - Urel) times the set value of the dose equivalent 
impact and the total time over which the measuring instrument signals the exceedance of the set level is 
measured. This period must not b e any shorter than 9 minutes.  
5.3.6 Stabilisation period test  
The test is performed by irradiating the measuring instrument in a collimated gamma beam with 
reproducible geometry and field size. When the measuring instrument is activated, the value of the 
measuring instrument is recorded for 6 minutes (reading every 15 seconds). 30 minutes after the 
measuring instrument is activated, the final measured value is determined from a sufficient number 
measuring instrument readings.  
The stabilisation period is de fined as the time from which the deviation of the measuring instrument 
readings from the final measured value is less than 5 %. The stabilisation period is compared with the 
manufacturer's data.  
5.4 Tests of resistance to environmental influences  
5.4.1 Mec hanical resistance test  
5.4.1.1 Shocks  
An inspection of the physical condition is carried out and a reading is taken from the measuring 
instrument. The measuring instrument in measuring mode is exposed to 60 falls (10 on each side) from General Measure No 0111 -OOP -C081 -16 
 
11 a height of 10 cm on the steel surface. After the test, the physical condition is again inspected and a 
reading is taken from the measuring instrument.  
The measured value must not exceed the permitted change limits specified in Article 2.3.7. There must 
also be no mechanica l damage and the information stored in the measuring instrument must not be lost.  
5.4.1.1 Fall test  
The deactivated measuring instrument packed for transport is exposed to 6 falls (one on each side) from 
a height of 1 m on a concrete surface. After the test, the physical condition is inspected, the measuring 
instrument is activated and the data from the measuring instrument is read after the operating mode has 
been reached.  
There must be no mechanical damage and the information stored in the measuring in strument must not 
be lost. The meter must be fully operational after the test.  
5.4.2 Tests of resistance to climatic influences  
5.4.2.1 Ambient temperature impact test  
The test is carried out by irradiating the measuring instrument with a constant input of  the dosimetric 
quantity. The measured values of the quantity determined as the arithmetic mean of a minimum of ten 
measurements at the maximum and minimum temperatures of the desired temperature range are 
compared with the reference value of the measured value determined at the standard temperature. The 
exposure time of the measuring instrument at individual temperatures must be at least 4 hours, the 
measuring instrument readings are recorded over the course of the last 30 minutes.  
The measured value must not exceed the permitted change limits specified in Article 2.3.9.  
5.4.2.2 Humidity impact test  
The test is carried out by irradiating the measuring instrument with a constant input of the dosimetric 
quantity. The measured values of the quantity determined  as the arithmetic mean of a minimum of ten 
measurements at a relative humidity of up to 85  % at +35 ° C are compared with the reference value of 
the measured quantity determined under standard conditions. The exposure time of the measuring 
instrument to i ndividual humidity values must be at least 4 hours, the measuring instrument readings are 
recorded over the course of the last 30 minutes.  
The measured value must not exceed the permitted change limits specified in Article 2.3.10.  
5.4.2.3 Atmospheric press ure impact test  
The test is carried out by irradiating the measuring instrument with a constant input of the dosimetric 
quantity. The measured values of the quantity determined as the arithmetic mean of at least ten 
measurements at pressure values of 70 kP a and 106 kPa are compared to the reference value of the 
measured quantity determined at a reference atmospheric pressure of 101.3 kPa.  
The measured value must not exceed the permitted change limits specified in Article 2.3.11.  
5.4.3 Electromagnetic compat ibility (EMC) test  
5.4.3.1 Resistance to electrostatic discharge  
Resistance to electrostatic discharge is tested on the measuring instrument in the most sensitive 
measurement range with a contact discharge of 4 kV or an air discharge of 8 kV (for measuring  
instruments with insulated surfaces). The discharges are applied to the various external parts of the 
measuring instrument that can be touched by the operator when using the measuring instrument. The 
total number of discharges is at least 10/hour.  
In this  test, the measured value must not exceed the limits given in Article 2.3.13.  General Measure No 0111 -OOP -C081 -16 
 
12 5.4.3.2 Resistance to a high -frequency electromagnetic field   
Resistance to a high -frequency electromagnetic field must be tested on the measuring instrument at the 
most sensitiv e range in the 80 MHz to 2 GHz frequency ranges at a test field amplitude intensity of 10 
V/m. The measuring instrument is exposed to a dose equivalent impact of seven times the lower limit 
of the effective measuring range.  
In this test, the measured value  must not exceed the limits given in Article 2.3.13.  
5.4.3.3 Resistance to radiated electromagnetic field by mobile phones and wireless  
networks  
Resistance to a radiated high -frequency electromagnetic field must be tested on the measuring 
instrument at the most sensitive range in the presence of an electromagnetic field emitted by mobile 
phones and wireless networks in the 800  MHz to 960 MHz and 1. 4 GHz to 2.7 GHz frequency ranges 
at an amplitude of test field strength of 30  V/m.  
In this test, the measured value must not exceed the limits given in Article 2.3.13.  
5.4.3.4 Resistance to induced interference by high -frequency fields  
Resistance to indu ced interference by high -frequency fields is tested on the measuring instrument at the 
most sensitive range in the 150 kHz to 80 MHz frequency range at 10 V. This test is only performed on 
measuring instruments with at least one conductive cable (e.g. for signal conduction).  
In this test, the measured value must not exceed the limits given in Article 2.3.13.  
5.4.3.5 Resistance to a magnetic field of 50 Hz/60 Hz  
Magnetic field resistance is tested on the measuring instrument at its most sensitive range of 50  Hz or 
60 Hz at a field strength of 30 A/m. The test is performed with the magnetic field measuring instrument 
in two positions (0 ° and 90  °). 
In this test, the measured value must not exceed the limits given in Article 2.3.13.  
5.4.4 Power supply test  
The battery capacity is tested on a measuring instrument with new batteries or fully charged batteries 
when activated at a dose equivalent between 10 μSv/h and 1 mSv/h. The measuring instrument is kept 
in activated mode for 8 consecutive hours and in deactiva ted mode for around 16 consecutive hours.  
The measuring instrument data at the end of the test must not differ by more than 5 % from the measuring 
instrument data at the start of the test and the measuring instrument must not indicate low battery 
capacity . 
6 Initial verification  
6.1 General  
During initial verification, the following tests are performed:  
a) Visual inspection;  
b) linearity response test of the instrument;  
6.2 Visual inspection  
During visual inspection of the measuring instrument, the following is assessed:  
a) compliance of the measuring instrument with the approved type;  
b) completeness of the measuring instrument according to the type approval certificate;  General Measure No 0111 -OOP -C081 -16 
 
13 c) whether the individual parts of the measuring instrument are damaged and whether they are 
function ing; 
d) the software version with the version approved during type approval.  
6.3 Functional tests  
6.3.1 Linearity response time test of the device  
The linearity response test of the device is carried out in accordance with Article 5.3.1.  
7 Subsequent verific ation  
Subsequent verification is carried out in the same way as the initial verification in chapter 6.  
8 Examination of the measuring instrument  
When examining measuring instruments pursuant to § 11a of the Metrology Act at the request of a 
person who may be affected by an incorrect measurement, please proceed according to Chapter 7. The 
maximum permissible error used is double the maximum permissible errors pursuant to Chapter 7.  
9 Notified standards  
For the purposes of specifying the metrological and technical requirements for measuring instruments 
and specifying the testing methods for their type approval and verification arising from this general 
measure, the CMI shall notify Czech technical standar ds, other technical standards or technical 
documents of international or foreign organisations, 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 general 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 w ith the requirements. 
These requirements may also be met by using another technical solution guaranteeing an equivalent or 
higher level of protection of legitimate interests.  
 
II. 
SUBSTANTIATION  
The CMI issues, pursuant to §  14(1)(j) of the Metrology Act, towards the implementation of § 6(2), 
§ 9(1), §  9(9) and §  11a(3) of the Metrology Act, this general measure, laying down metrological and 
technical requirements for the specified measuring instr uments and test methods for the type approval 
and verification of the specified measuring instruments - ‘non-spectrometric activity meters and 
dosimeters used to monitor compliance with limits in the area of radiation protection or nuclear safety 
and for e mergency measurement - portable dosimetric gamma radiation and X -ray meters used for 
purposes of radiation protection’.  
Implementing Decree No 345/2002 specifying measuring instruments for mandatory verification and 
measuring instruments subject to type a pproval, as amended, classifies the measuring instruments under General Measure No 0111 -OOP -C081 -16 
 
14 items 8.7, 8.8 and 8.11 in the annex entitled ‘List of legally controlled measuring instruments’ as 
measuring instruments subject to type approval and mandatory verification.  
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 provision 
of information in the field of technical regulations and of rules on  Information Society services.  
III. 
INFORMATION  
In accordance with §  172(l) APC, in conjunction with §  39(l) APC, the CMI has stipulated a time limit 
for comments of 30  days as of the date of posting the draft on the official notice board. Comments 
submitt ed after this time limit will not be considered.  
The persons concerned are hereby invited to comment on this draft general measure. With regard to the 
provisions of § 172(4) APC, comments are to be submitted in writing.  
Pursuant to the provisions of § 174 (1) APC, in conjunction with the provisions of § 37(1) APC, it must 
be clearly stated who is submitting the comments, which general measure the comments concern, how 
the draft contradicts legislation or how the general measure is inaccurate. The comments m ust also 
contain the signature of the person making the comments.  
The supporting documents for this draft general measure may be consulted at the Czech Metrology 
Institute, Legal Metrology Department, Okružní 31, 638 00 Brno, after making arrangements by 
telephone.  
This draft general measure shall be posted for 15  days.  
 
 
 
 
 ...…………………………..............  
 Pavel Klenovský  
Director -General  
 
 
Person responsible for accuracy: Tomáš Hendrych  
 
Posted on:  
Signature of the authorised person confirming posting:  ....................................................  
 
Removed on:  
Signature of the authorised person confirming removal:  ....................................................