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In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a 2 + b 2]1/2
Unless otherwise stated the expanded uncertainties given below correspond to k = 2 (at a 95 % level of confidence)
Lithuania, LEI (Lithuanian Energy Institute)
Fluid flow ,
Gas flowrate volume
:
2.5 m3/h to 9700 m3/h
Gas meter
Relative expanded uncertainty
:
0.25 % to 0.3 %
Turbine, rotary piston, vortex, ultrasonic and orifice meters
Gas : air
Pressure : ambient
Temperature : (20 ± 5) °C
Pipe size : DN (50 to 400)
Approved on 19 December 2012
Institute service identifier : LT3
CMC ID :
EURAMET-M-LT-00000F3Y-1
Fluid flow ,
Gas flow speed
:
0.05 m/s to 60 m/s
Air speed anemometers
Relative expanded uncertainty
:
8 % to 0.45 %
Prandtl tubes, fan type, hot film and ultrasonic anemometers
Gas : air
Pressure : ambient
Temperature : (20 ± 2) °C
Pipe diameter : 400 mm
Diameter : < 100 mm
Approved on 19 December 2012
Institute service identifier : LT4
CMC ID :
EURAMET-M-LT-00000F3Z-1
Fluid flow ,
Gas flowrate volume
:
5.7 m3/h to 308.8 m3/h
Gas meters, Flow meters
Relative expanded uncertainty
:
0.16 %
Turbine, rotary piston and orifice meters, LFE
Gas : air
Pressure : ambient
Temperature : (20 ± 2) °C
Pipe size : DN (10 to 150)
Approved on 19 December 2012
Institute service identifier : LT2
CMC ID :
EURAMET-M-LT-00000F3X-1
Fluid flow ,
Liquid flowrate: volume
:
0.1 m3/h to 100 m3/h
Any flow measurement instruments or flow devices
Relative expanded uncertainty
:
0.1 % to 0.12 %
Mechanical, electromagnetic, ultrasonic, positive displacement meters
Liquid : water
Pressure : < 4.5 bar
Temperature : (25 ± 5) °C
Pipe size : DN (15 to 150)
Approved on 19 December 2012
Institute service identifier : LT7
CMC ID :
EURAMET-M-LT-00000F42-1
Fluid flow ,
Gas flowrate volume
:
0.016 m3/h to 16 m3/h
Flow meter, gas meter
Relative expanded uncertainty
:
0.13 %
LFE, critical nozzles, wet gas, cone/float and rotary piston meters
Gas : air
Pressure : ambient
Temperature : (20 ± 2) °C
Pipe size : DN < 50
Approved on 19 December 2012
Institute service identifier : LT1
CMC ID :
EURAMET-M-LT-00000F3W-1
Fluid flow ,
Liquid volume
:
500 L to 5000 L
Hydrocarbon meters
Relative expanded uncertainty
:
6.0E-2 % to 6.5E-2 %
Turbine and positive displacement meters
Liquid : Exxsol D80 (density 805 kg/m3, viscosity 1.7 mPa s)
Pressure : < 4.5 bar
Temperature : (20 ± 5) °C
Pipe size : DN (15 to 100)
Flow rate : 1 m3/h to 120 m3/h
Approved on 19 December 2012
Institute service identifier : LT9
CMC ID :
EURAMET-M-LT-00000F43-1
Fluid flow ,
Liquid volume
:
5 L to 1500 L
Any flow measurement instruments or flow devices
Relative expanded uncertainty
:
5.4E-2 % to 8.2E-2 %
Mechanical, electromagnetic, ultrasonic, positive displacement meters
Liquid : water
Pressure : < 4.5 bar
Temperature : (25 ± 5) °C
Pipe size : DN (15 to 150)
Flow rate : 0.01 m3/h to 100 m3/h
Approved on 19 December 2012
Institute service identifier : LT5
CMC ID :
EURAMET-M-LT-00000F40-1
Fluid flow ,
Liquid mass
:
5 kg to 1500 kg
Any flow measurement instruments or flow devices
Relative expanded uncertainty
:
4.8E-2 % to 7.0E-2 %
Mechanical, electromagnetic, ultrasonic, positive displacement, Coriolis meters
Liquid : water
Pressure : < 4.5 bar
Temperature : (25 ± 5) °C
Pipe size : DN (15 to 150)
Flow rate : 0.01 kg/m3 to 100 kg/m3
Approved on 19 December 2012
Institute service identifier : LT6
CMC ID :
EURAMET-M-LT-00000F41-1
