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 manuals.
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 6000Pt100 + 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 the 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 Converters 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
Zdenek Alince
Head of the metrology department (AMS, SPS, MS), chief metrologist