Results for: thermometry ireland
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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)
Ireland, NSAI NML (NSAI National Metrology Laboratory)
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -10 °C to 100 °C
Liquid in glass thermometer
Absolute expanded uncertainty : 9 mK
Comparison
Stirred liquid bath : ice bath, water, silicone oil
Ambient temperature : (20 ± 1) °C
Approved on 03 November 2009
Institute service identifier : T 70
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 250 °C to 500 °C
IPRT
Absolute expanded uncertainty : 3.0E1 mK
Comparison
Ambient temperature : (20 ± 1) °C
Temperature-controlled salt bath
Approved on 03 November 2009
Institute service identifier : T 41
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -40 °C to -10 °C
Liquid in glass thermometer
Absolute expanded uncertainty : 2.5E1 mK
Comparison
Stirred liquid bath : acetone
Ambient temperature : (20 ± 1) °C
Approved on 03 November 2009
Institute service identifier : T 70
Items for defining ITS-90 , Temperature : 273.16 K
Water triple point cell
Absolute expanded uncertainty : 0.32 mK
Direct comparison
Ambient temperature : (20 ± 1) °C
Temperature-controlled bath
Approved on 20 January 2010
Institute service identifier : T 10
Items for defining ITS-90 , Temperature : 0.01 °C to 29.7646 °C
Long-stem SPRT
Absolute expanded uncertainty : 2 mK
Calibration at fixed points
Temperature-controlled bath : (20 ± 1) °C
Approved on 17 January 2013
Institute service identifier : T 33
Hygrometers , Humidity : 30 °C to 75 °C
Dew-point hygrometers
Absolute expanded uncertainty : 0.2 °C
Relative humidity generator
Approved on 14 December 2018
Institute service identifier : HP-NM-06
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -40 °C to -10 °C
Spirit and mercury in glass - partial and total immersion thermometers
Absolute expanded uncertainty : 3.5E1 mK
Comparison in methanol bath to ITS-90 SPRT using optical imaging system. ELC values measured for partial immersion thermometers.
Calibration of partial and total immersion thermometers. Minimum graduation: 0.1 °C
Approved on 13 August 2020
Institute service identifier : TP-NM-70
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -100 °C to -40 °C
Spirit in glass Thermometers - Total immersion
Absolute expanded uncertainty : 0.2 K
Comparison in methanol bath to ITS-90 SPRT using optical imaging system.
Calibration of total immersion thermometers. Minimum graduation: 0.5 °C
Approved on 13 August 2020
Institute service identifier : TP-NM-70
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 200 °C to 250 °C
Sensor with display
Absolute expanded uncertainty : 1.0E1 mK
Comparison
Stirred liquid bath : silicone oil
Ambient temperature : (20 ± 1) °C
Approved on 03 November 2009
Institute service identifier : T 22
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -75 °C to 0 °C
IPRT
Absolute expanded uncertainty : 5 mK
Comparison
Ambient temperature : (20 ± 1) °C
Temperature-controlled acetone bath
Approved on 03 November 2009
Institute service identifier : T 41
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 80 °C to 200 °C
IPRT
Absolute expanded uncertainty : 7 mK
Comparison
Ambient temperature : (20 ± 1) °C
Temperature-controlled oil bath
Approved on 03 November 2009
Institute service identifier : T 41
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 0 °C
Sensor with display
Absolute expanded uncertainty : 4 mK
Comparison
Stirred liquid bath : ice bath
Approved on 03 November 2009
Institute service identifier : T 22
Items for defining ITS-90 , Temperature : -38.8344 °C to 29.7646 °C
Long-stem SPRT
Absolute expanded uncertainty : 2 mK
Calibration at fixed points
Temperature-controlled bath : (20 ± 1) °C
Approved on 17 January 2013
Institute service identifier : T 33
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -100 °C to 0 °C
IPRT
Absolute expanded uncertainty : 6 mK
Calibration by comparison to ITS-90 SPRT in methanol bath.
ITS-90
Approved on 02 December 2020
Institute service identifier : TP-NM-90
Items for disseminating ITS-90 and PLTS 2000 , Air Temperature : -40 °C to 100 °C
Air temperature sensor
Absolute expanded uncertainty : 0.19 °C to 0.36 °C
{"row_1":{"col_1":"Minimum temperature / °C","col_2":"Maximum temperature / °C","col_3":"CMC as expanded uncertainty (<em>k</em>&nbsp;= 2) / °C"},"row_2":{"col_1":"-40","col_2":"-10","col_3":"0.20"},"row_3":{"col_1":"-10","col_2":"+60","col_3":"0.19"},"row_4":{"col_1":"+60","col_2":"+100","col_3":"0.36"}}
Calibration by comparison to reference PRTs
Approved on 24 January 2022
Institute service identifier : HP-NM-01, HP-NM-05
Hygrometers , Humidity : 10 %rh to 95 %rh
Relative humidity sensors
Absolute expanded uncertainty : 0.6 %rh to 2 %rh
Comparison in a climatic chamber
Air temperature : 15 °C to 60 °C
Approved on 14 December 2018
Institute service identifier : HP-NM-05
Items for defining ITS-90 , Temperature : 419.527 °C
Cell for contact thermometry
Absolute expanded uncertainty : 2.9 mK
Freezing point of zinc
Ambient temperature : (20 ± 1) °C
Temperature-controlled furnace
Approved on 17 January 2013
Institute service identifier : T 45
Items for defining ITS-90 , Temperature : 231.928 °C
Cell for contact thermometry
Absolute expanded uncertainty : 1.8 mK
Freezing point of tin
Ambient temperature : (20 ± 1) °C
Temperature-controlled furnace
Approved on 17 January 2013
Institute service identifier : T 44
Items for defining ITS-90 , Temperature : 234.3156 K
Cell for contact thermometry
Absolute expanded uncertainty : 0.64 mK
Triple point of mercury
Ambient temperature : (20 ± 1) °C
Temperature-controlled bath
Approved on 18 May 2004
Institute service identifier : T 64
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 100 °C to 200 °C
Liquid in glass thermometer
Absolute expanded uncertainty : 2.0E1 mK
Comparison
Stirred liquid bath : silicone oil
Ambient temperature : (20 ± 1) °C
Approved on 03 November 2009
Institute service identifier : T 70

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