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Verification of measuring instruments

Verification of a large spectrum of legally controlled measuring instruments in various fields of measurements

By Decision of UNMS SR No 2005/000557/00357 and in accordance with Act No 157/2018 Coll. on metrology, § 9 clause 5, SLM is appointed for the metrological control of the legally controlled measuring instruments. SLM ensures the performance of verification of a large spectrum of legally controlled measuring instruments in various fields of measurements, as specified in Annex 1 to the Ordinance No 161/2019 Coll. on measuring instruments and metrological control, as later amended.

Scopes of metrological services provided : verification, calibration and testing of measuring instruments and standards specified according to the particular field of measurements can be found in part Calibration of standards and measuring instruments.

Kinds of legally controlled measuring instruments in accordance with Annex No 1 of Ordinance No 161/2019 Coll.

  • 1Geometrical quantities
    • 1.1 Length
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      1.1.1 Materialised measures of length 15
      a) metal yes yes 5 years
      b) made of other materials yes yes 2 years
      1.1.2 Length measuring instruments for winding materials (rolling, folding, winding) (2) yes yes 2 years 50
      1.1.3 Length measures for checking the folds length of folding measuring machines no yes 5 years 50
      1.1.4 Taximeters of taxi cars yes yes 2 years 18
      1.1.5 Repealed from 30. 10. 2006.
      1.1.6 Test sieves (2, 9) no yes 2 years 56
      1.1.7 Automatic level gauges (2, 3) no yes 1 year 68
      1.1.8 Multi-dimensional measuring instruments (2, 3) 13 after repair (14) 2 years 20
    • 1.2 Area contents
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      1.2.1 Instruments for measuring the area of leathers (2) yes yes 1 year 39
    • 1.3 Volume, flow rate
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      1.3.1 Metal volume measures (2) yes yes 2 years 47
      1.3.2 Capacity serving measures (2) yes yes no limit 27
      1.3.3 Serving dispensers (2) yes yes 2 years 28
      1.3.4 Volumetric glass containers, volumetric flasks, burettes, pipettes, volumetric cylinders of accuracy class "A") (2, 3) yes yes no limit 55
      1.3.5 Repealed from 1. 1. 2005
      1.3.6 Transport barrels made of non corrosive materials, shape-stable (KEG, KEG Plus, ...) (2) yes yes 10 years 34
      1.3.7 Transport barrels except of those specified in 1.3.6 (2) yes yes 2 years 34
      1.3.8 Transport tanks for liquids (2)
      a) Cisterns - tankers yes yes 4 years 34
      b) Volumetric tanks on ships no yes 12 years 21
      1.3.9 Fixed storage tanks used as volume measures (2, 3) 48
      a) Cooling and storage milk tanks no yes 4 years
      b) Wood barrels and tanks no yes 5 years
      c) Concrete and walled storage tanks no yes no limit
      d) Barrels and tanks made of other materials no yes 10 years
      1.3.10 Dosing volume measures for liquids (2) yes yes 5 years 58
      1.3.11 Volume measures for alcohol (2, 3, 6) yes yes 3 years 24
      1.3.12 Volume flow meters for liquids other than water yes yes 2 years 10, 11
      1.3.13 Measuring systems 12
      a) for liquids other than water (2) yes yes 2 years
      b) for liquefied gases (2) yes yes 1 year
      1.3.14 Mass flow meters for liquids (2) yes yea 2 years 65
      1.3.15 Water meters (2)
      a) for cold water yes (11) yes 6 years 8
      b) for hot water yes (12) yes 4 years 9
      1.3.16 Conversion devices for quantities of liquids including attached transducers (2) yes yes 2 years 69
      a) flow rate transducers yes yes 2 years 10, 11, 12, 65
      b) temperature transducers yes yes 2 years 37
      c) pressure transducers yes yes 2 years 33
      d) density transducers yes yes 2 years 71
      1.3.17 Diaphragm gas meters incl. gas meters with temperature correction (2) 13
      a) up to G6 incl., provided, the average year consumption does not exceed 500 m3 yes yes 15 years
      b) other diaphragm gas meters yes yes 10 years
      1.3.18 Rotary and turbine gas meters (2) yes yes 5 years 13
      1.3.19 Mass flow meters for gases (2) yes yes 2 years 66
      1.3.20 Gas volume conversion devices incl. attached transducers 2) that are subject to the annual tests on site as specified in Annex No. 35 yes yes 5 years 35
      1.3.21 Water meters for open water levels according to Annex 64 yes 2 years 64
      1.3.22 Packages of the pre-packaged products classified as measuring containers (8) no no Ordinance No 207/2000 Coll. as amended by Ord. No 420/2001 Coll.
      1.3.23 Measuring systems for alcohol (2, 3) according to Annex according to Annex 1 year 72
  • 2Mechanical quantities
    • 2.1 Mass
      Before putting on the market or in use, the measuring instruments specified in the items 2.1.1 to 2.1.4 are subject to the conformity assessment in accordance with the special rule 13) and to the subsequent verification during the time of use. After a repair, they shall be initially verified.
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      2.1.1 Non-automatic weighing instruments of accuracy classes II, III and IIII except of those specified in the items 2.1.2, 2.1.3 a 2.1.4 (2, 3, 7) - after repair (14) 2 years 15
      2.1.2 Non-automatic weighing instruments for measuring the axle or wheel loads of railway or road vehicles in the static mode (3)
      a) road after repair (14) 1 year (15)
      b) rail way after repair (14) 2 year (15)
      2.1.3 Non-automatic weighing instruments of accuracy classes I and II for weighing precious metals, gemstones and precious materials used in health service (2, 3) after repair (14) 2 years (15)
      2.1.4 Non-automatic weighing instruments for counting pieces and for determination of substances properties (2, 7) after repair (14) 2 years (15)
      2.1.5 Weights of accuracy classes 1., 2. and 3. (2, 3) no yes 1 year 17
      2.1.6 Weights of accuracy class 4. (2, 3) no yes 2 years 17
      2.1.7 Weights of accuracy class 5. (2, 3) no yes 2 years 17
      2.1.8 Automatic weighing instruments for weighing road vehicles in motion of the accuracy classes 0, 2; 0, 5; 1 and 2, (2, 3) yes yes 1 year 30
      2.1.9 Automatic rail-weighbridges of accuracy classes 0, 2; 0, 5; 1 and (2, 3) yes yes 2 years 46
      2.1.10 Automatic discontinuous totalizing instruments of accuracy classes 0, 2; 0, 5; 1 and 22) yes yes 2 years 29
      2.1.11 Automatic filling instruments (2) yes yes 2 years 26
      2.1.12 Automatic catchweighing instruments (2) yes yes 2 years 7
      2.1.13 Continuous totalizing automatic weighing instruments (belt weighers) of accuracy classes 0, 5; 1 and 2 (2) yes yes 2 years 6
      2.1.14 Cereal testers (2) yes yes 2 years 20
    • 2.2 Mechanical motion
      Before putting on the market, the measuring instruments in the item 2.2.2 are subject to the type approval according to the special rule. (5) The measuring instruments in the item 2.2.2 that meet the specified requirements at the verification shall be marked by the verification and sealing marks.
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      2.2.1 Road speedometers (used for checking the observance of the rules of the road) (3) yes yes 1 year 31
      2.2.2 Recording equipment used in road traffic (2, 3, 5) yes (5) 2 years (5)
    • 2.3 Pressure
      Before putting on the market or in use, the measuring instruments specified in the item 2.3.1 are subject to the conformity assessment in accordance with the special rule (13) and to the subsequent verification during the time of use. After a repair, they shall be initially verified.
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      2.3.1 Non-invasive blood pressure gauges (4)
      a) mechanical after repair (14) 2 years 40 (16)
      b) electromechanical after repair (14) 1 year 40 (16)
      2.3.2 Pressure transducers used in rendering plants (3) yes yes 1 year 33
      2.3.3 Tire pressure gauges for motor vehicles used in fuel pump stations, motor car repair shops, tire services and in vehicle inspection stations yes yes 1 year 19
    • 2.4 Mechanical material tests
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      2.4.1 Tensile testing machines and presses (2, 3) no yes 2 years 61
      2.4.2 Pendulum impact machines for testing the notch and blow toughness (2, 3) no yes 2 years 61
      2.4.3 Machines for testing the material tensile creeping (2, 3) 61
      a) using the lever loading machine and direct loading no yes 5 years
      b) using the spring or another loading machine no yes 2 years
      2.4.4 Durometers for concrete (3, 10) no yes 1 year 63
      2.4.5 Tensioning equipment for pre-stressed concrete (3) no yes 1 year 60
      2.4.6 Torque wrenches yes yes 1 year 59
  • 3Thermo-technical quantities
    • 3.1 Temperature, heat
      Before putting on the market or in use, the measuring instruments specified in the item 3.1.1 are subject to the conformity assessment in accordance with the special rule (13) and to the subsequent verification during the time of use. After a repair, they shall be initially verified.
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      3.1.1 Electronic clinical and veterinary thermometers (4) - after repair (14) 2 years 32 (17)
      3.1.2 Instruments used for determination of combustion heat values for purpose of balance measurements (2, 3)
      a) thermometers in glass yes yes 2 years 38
      b) electric temperature sensors yes yes 2 years 37
      c) heat transducers yes yes 2 years 37
      3.1.3 Thermometers used in volumetric alcoholmeters (2, 3) yes yes 3 years 38
      3.1.4 Heat transducers used in rendering plants (3) yes yes 1 year 37
      3.1.5 Heat meters and their parts (2) 51
      a) compact heat meters yes yes 4 years 51
      b) flowrate meters yes yes 4 years 53
      c) resistance temperature sensors yes yes 4 years 37
      d) electronic calorimeters yes yes 4 years 51
      e) pressure transducers/td> yes yes 2 years 33
      f) temperature transducers yes yes 2 years 37
      3.1.6 Combined temperature sensors intended for use in nuclear power plants of VVER 440 type yes yes 1 year 54
  • 4Electrical quantities
    • 4.1 Electrical quantities
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      4.1.1 Single and multi-phase AC dynamic (inductive)electrical energy meters (including two-rate ones) for the direct measurement of the electrical energy consumption (2) yes yes 16 years 14
      4.1.2 Single and multi-phase AC dynamic (inductive)electrical energy meters for the indirect (connected via transformers) measurement of the electrical energy consumption (2) yes yes 12 years 14
      4.1.3 AC dynamic (inductive) electrical energy meters with a mechanical additional device for measuring the overconsumption, maximum, and multi-rate electrical energy meters yes yes 12 years 14
      4.1.4 Single and multi-phase AC static electrical energy meters with electronic measuring system (2) yes yes 12 years 14
      4.1.5 AC static electrical energy meters or AC dynamic (inductive) meters with an electronic additional device for measuring the overconsumption, maximum, and multi-rate electrical energy meters (2) yes yes 5 years 14
      4.1.6 Measuring current and voltage transformers used in connection with electrical energy meters (2) yes yes no limit 52
  • 5Optical quantities
    • 5.1 Light quantities
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      5.1.1 Luxmeters with silicon photodetector (3) no yes 2 years 57
      5.1.2 Luxmeters with selenium photodetector (3) no yes 1 year 57
  • 6Time, frequency and acoustic quantities
    • 6.1 Acoustic pressure
      Before putting on the market or in use, the measuring instruments specified in the item 6.1.3 are subject to the conformity assessment in accordance with the special rule (13) and to the subsequent verification during the time of use. After a repair, they shall be initially verified.
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      6.1.1 Sound-level meters and integrating sound-level meters (3) yes yes 2 years >42
      6.1.2 Band-pass filters (3) yes yes 2 years 42
      6.1.3 Tone audiometers (4) - after repair (14) 2 years 44 (18)
      6.1.4 Measuring microphones (3) yes yes 1 year 49
      6.1.5 Personal sound exposure meters (3) yes yes 2 years 42
      6.1.6 Sound calibrators (3, 4) yes yes 1 year 45
  • 7Physicochemical quantities
    • 7.1 Density
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      7.1.1 Laboratory densimeters with scale interval of < 1 kg. m-3 except of densimeters for measuring soils graiding (Casagrande) (2, 3) yes yes no limit 70
      7.1.2 Laboratory alcoholmeters with scale interval < 0, 2 % (2, 3) yes yes no limit 16
      7.1.3 Laboratory saccharimeters with scale interval 0, 1 % (2, 3) yes yes no limit 70
      7.1.4 Laboratory mustmeters with scale interval 0, 2 kg. hl-1 (2, 3) yes yes no limit 70
      7.1.5 Vibration densimeters for liquids and gases (2, 3) yes yes 1 year 71
    • 7.2 Refractivity index (refractometry)
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      7.2.1 Visual prismatic refractometers with the maximum permissible error of refractivity index in order of 10-4 (2, 3) no yes 2 years 67
      7.2.2 Visual prismatic refractometers with the maximum permissible error of refractivity index in order of 10-5 (2, 3) no yes 3 years 67
      7.2.3 Digital prismatic refractometers with the maximum permissible error of refractivity index in order of 10-4 and 10-5 (2, 3) yes yes 2 years 67
    • 7.3 Humidity of solid materials
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      7.3.1 Moisture meters for cereal grains and oil seeds of accuracy class I. (2) yes yes 1 year 36
    • 7.4 Chemical composition
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      7.4.1 Analysers of exhaust emissions of vehicles equipped with ignition engines (3) yes yes 1 year 23
      7.4.2 Breath analysers (3)) yes yes 1 year except of breath analysers based on the electrochemical principle and of breath analysers put on the market before 31. 12. 2000 - in those cases the verification is valid for 6 months 25
      7.4.3 Gas chromatographs for measuring the energy value of the natural gas (2) yes yes 1 year 73
  • 8Quantities of atomic and nuclear physics
    • 8.1 Quantities of atomic and nuclear physics
      Before putting on the market or in use, the measuring instruments specified in the items 8.2, 8.3, 8.4 and 8.9 are subject to the conformity assessment in accordance with the special rule (13) and to the subsequent verification during the time of use. After a repair, they shall be initially verified.
      item kind of measuring instrument - field of measurement type approval initial verification validity of verification annex No.
      8.1.1 Instruments for measuring the activity of diagnostic and therapeutic preparations applied in vivo (3, 4) - after repair (14) 1 year >43 (19)
      8.1.2 Measuring instruments for determination of the therapeutically absorbed doses of ionizing radiation applied to patients (3, 4) - after repair (14) 1 year 41 (19)
      8.1.3 Instruments for measuring the radio contamination inside the bodies of contaminated persons (3, 4) - after repair (14) 2 years 43 (19)
      8.1.4 Instruments for measuring the volume activity of radon 222 in air and in water, and for measuring the equivalent volume activity of radon 222 in air (3) no yes 1 year 43 (19)
      8.1.5 Systems for measuring the dosimetric quantities used in personal dosimetry (3) yes yes 1 year 41 (19)
      8.1.6 Measuring instruments and systems for measuring the quantities of the radioactive transformation and of dosimetric quantities, used for monitoring the observation of limits in the field of the radiation protection or safety and for evidential measurements within the radiation monitoring (3) yes yes 2 years 41(19), 43(19)
      8.1.7 Direct reading personal dosimeters and personal dosimeters signalizing the preset level of dosimetric quantities that are not used simultaneously with the legally controlled measuring instruments specified in the item 8.6 (3) yes yes 2 years 41 (19)
      8.1.8 Instruments for measuring the quality of X-ray beams and sources of X-radiation (3, 4) - after repair (14) 2 years 41 (19)
      8.1.9 Stationary measuring instruments used for detection of the hidden radioactivity in the passenger traffic and freight transport no yes 2 years 43 (19)
  1. When no other validity period of the verification was specified at the type approval or type certification of the measuring instrument.
  2. Measuring instruments used for measurements related with payment and/or with production of pre-packages.
  3. Measuring instruments used for measurements resulting out of the special rules, at official measurements, or required by the state administration.
  4. Measuring instruments used in connection with the directly health or life-threatening diagnostics and therapies.
  5. Council Ordinance (EEC) No 3821/85 of 20 December 1985 on recording device used in the road traffic (Extraordinary edition of EU O.J. 7/vol. 1).
  6. The statement of the Ministry of Finances of the SR is required for the measuring instruments type approval.
  7. Weighing instruments of the accuracy class IIII are intended for weighing sand, stones, solid communal waste, construction waste, and for weighing mortal and concrete in the manufacturers´ premises and carriers.
  8. The production and importation of the pre-packages is subject to the metrological control.
  9. STN ISO 3310-1, STN ISO 3310-2, STN ISO 3310-3.
  10. STN 73 1373.
  11. The flow meters for measuring the nominal flowrates of Qn higher than 400 m3/ h-1 put on the market in accordance with requirements applicable in the Slovak Republic are not subject to type approval.
  12. The flow meters for measuring the nominal flowrates of Qn higher than 200 m3/ h-1 put on the market in accordance with requirements applicable in the Slovak Republic are not subject to type approval.
  13. Act No 264/1999 Coll. on the technical requirements on products and on the conformity assessment and on amendments and supplements of some acts, as later amended.
  14. Act No 264/1999 Coll. § 9 clause 4.
  15. Verification according to STN EN 45501, point 8.2.
  16. Verification according to Annex No 40 and STN EN 1060-1 to 3.
  17. Verification according to Annex No 32 and STN EN 12470-3.
  18. Verification according to Annex No 44 and STN EN 60645-1.
  19. Verification according to the technical standards.
  20. Verification according to the harmonized standards or normative documents as specified by § 13 of the Government Ordinance of the SR No 294/2005 Coll. on measuring instruments.
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