• Authorized Metrology Center (AMC)

    The company ELGAS, s.r.o. is authorized by the Czech Office for Standards, Metrology and Testing (ÚNMZ) as an AMC with the assigned official mark K with registration number 82. Verification of Electronic Volume Converters and Turbine gas meters is ensured in accordance with the Act on Metrology No. 505/1990 Coll. as amended, the subsequent verification is performed in accordance with § 11, paragraph 4 of Act No. 505/1990, Coll., on Metrology, as amended.

    AMS K82 certificate of metrological, technical and personnel competence for verification of specified measuring instruments No. 0319-OS-K82-19 valid until 15.9.2024.

    Conformity Assessment Center (CAC)

    CAC provides the metrological part of conformity assessment of meters placed on the EU market (according to Directive 2014/32/EU (MID), which is implemented in the Czech Republic NV No. 120/2016 Coll.)

    The company has implemented a quality system for the production, output inspection and testing of meters according to module D of Directive 2014/32/EU (MID), which has been certified by a notified body 1383 (CMI) since 2007.

    Metrological center (MC)

    Provides metrological order in the company, monitors calibration deadlines, performs internal calibrations and tests of meters.

    Qualification

    A quality management system has been developed in the metrology department, which is regularly audited by the Czech Metrology Institute. The EN ISO/IEC 17025:2017 standard is applied for laboratory procedures and quality manual.

    The accuracy of measurements in laboratories is regularly proven by participation in a two-way interlaboratory comparison, in which all laboratories of the metrology department participate.

    a) Laboratories

    The air temperature in the laboratories is kept within the prescribed limits by means of an air-conditioning device. The reference conditions of the environment are monitored in the laboratory: temperature, atmospheric pressure, relative humidity. 

    b) Measuring equipment

    When testing meters, the following quantities are implemented and accurately measured in laboratories:

    Electronic Volume Converters

    Pressure

    Temperature

    Pulse counting

    Realization

    Pressure calibrators

    Thermostatic bath, stability 0.01 °C

    Impulse generator

    Measuring etalon

    DPI 520
    PACE 6000

    Pt100 + multimeter 6½ 

    Impulse counter

    Measuring range

    (0 to 13.5) MPa abs

    (-40 to +70) °C

    Eight decimal indexes

    Uncertainty U (k=2)

    < 0.03 %MV

    46 mK

    Not given for computing

    Gas meters

    Gas flow

    Gas flow

    Realization

    vacuum pump

    ventilator

    Measuring etalon

    Critical nozzles

    Turbine and rotary gas meter

    Measuring range

    (0.016 to 40) m3/h

    (4 to 1000) m3/h

    Dimension

    DN15 to DN40

    DN50 to DN150

    Workshop

    Horní Jelení

    Chrudim

     

    Other measured quantities:

    Pardubice

     

    Atmospheric pressure

    Temperature

    Relative humidity

     

    measurement only

    measurement only

    measurement only

    Measuring etalon

    Comet atmospheric pressure sensors

    Comet temperature and humidity sensor (combined meter)

    Comet temperature and humidity sensor (combined meter)

    Measuring range

    (80 to 110) kPa

    (-30 to 80) °C

    (0 to 100) % r.h.

    Horní Jelení

     

    Atmospheric pressure

    Temperature

    Relative humidity

     

    measurement only

    measurement only

    measurement only

    Measuring etalon

    JUMO p30

    JUMO Pt100

    ELAP EAS 623.2

    Measuring range

    (90 to 102) kPa

    (-25 to 70) °C

    (20 to 80) % r.h.

    Chrudim

     

    Atmospheric pressure

    Temperature

    Relative humidity

     

    measurement only

    measurement only

    measurement only

    Measuring etalon

    Comet atmospheric pressure sensors

    Comet temperature and humidity sensor (combined meter)

    Comet temperature and humidity sensor (combined meter)

    Measuring range

    (80 to 110) kPa

    (-30 to 80) °C

    (0 to 100) % r.h.

    Air conditioning chambers for exposure to cold and dry heat in the temperature range (-40 to 160) ° C and realization of humidity up to 100% r.h. are used for environmental tests.

    c) Methods

    Electronic volume converters and gas meters are tested according to validated internal regulations, which contain an analysis of the calculation of uncertainties and comply with the principles set out in the regulations:

    • 0111-OOP-C032-13 (Electronic Volume Convertes),
    • 0111-OOP-C007-09 (Diaphragm Gas Meters),
    • 0111-OOP-C031-13 (Turbine and Rotary Gas Meters).

    An automated process is applied for measurement.

    d) Workers

    Workers are holders of qualification certificate for Electronic Volume Convertes and Turnibe gas meter granted by certification authority number 3034 for certification of workers qualification for metrological activity set up by ČMI Brno.

    e) Metrology department