| SERVICE | PRODUCT | DETERMINANT | TECHNIQUE | PROCEDURE | LIMITATION / RANGE |
Temperature metrology - Ancillary temperature measuring equipment
| Resistance bridges;
| Resistance to temperature conversion;
| Direct measurement by electrical input;
| | from 0 Ω to 300 Ω
|
|
CAPABILITY
Calibration of AC bridges for temperature measurement
with least uncertainties of measurement of -
1 mΩ for linearity from 0 Ω to 300 Ω
0.1 μΩ/Ω for linearity from 16 Ω to 130 Ω
|
| Type R extension wire; Type S extension wire;
| Volt to temperature conversion;
| Direct measurement by electrical input;
| | from 0 °C to 50 °C
|
|
CAPABILITY
0.22 μV
|
| Digital voltmeters (DVM) and digital multimeters (DMM); Multi-channel thermocouple data recorders; Process calibrators;
| Volt to temperature conversion;
| Direct measurement by electrical input;
| | 0 °C to 1100 °C |
|
CAPABILITY
Calibration of thermocouple indicators (sumilation only)
with least uncertainties of measurement of -
Type T
0.09 °C from 0 °C to 500 °C
Type K, J, and N
0.09 °C from 0 °C to 1100 °C
Type S and R
0.12 °C from 0 °C to 1100 °C |
Temperature metrology - Humidity measuring equipment
| Dew point meters; Hygrometers; Psychrometers;
| Dew point; Temperature;
| To be determined;
| | From -30 °C to 80 °C
|
|
CAPABILITY
Calibration of dew point meters
with least uncertainties of measurement of -
0.1 K for range of dew point from −30 °C to 80 °C
Calibration of temperature sensors in dew point meters
with least uncertainties of measurement of -
from 0.28 K at −20 °C to 0.06 K at 14 °C in air
0.06 K from 14 °C to 32 °C in air
from 0.06 K at 32 °C to 0.37 K at 80 °C in air
|
| Relative humidity sensors;
| Relative humidity (RH); Temperature;
| To be determined;
| | from 5% to 95% RH
From 0 °C to 80 °C
|
|
CAPABILITY
Calibration of relative humidity sensors
with least uncertainties of measurement of -
| Relative Humidity (RH)
| 5%
| 50%
| 95%
| 0 °C
| 0.20
| 0.87
| 1.39
| 23 °C
| 0.19
| 0.64
| 1.10
| 70 °C
| 0.18
| 0.50
| 0.83
| 80 °C
| 0.18
| 0.47
| 0.79
|
with a minimum frost point of −30 °C
Calibration of temperature sensors for RH sensors and
electronic psychrometers
with least uncertainties of measurement of -
from 0.28 K at −20 °C to 0.06 K at 14 °C in air
0.06 K from 14 °C to 32 °C in air
from 0.06 K at 32 °C to 0.37 K at 80 °C in air
|
Temperature metrology - Non-contact temperature measuring equipment
| Thermal imaging systems;
| Temperature;
| To be determined;
| | from -40 °C to 1100 °C
|
|
CAPABILITY
Calibration of thermal imaging cameras
with least uncertainties of measurement of -
from 0.1 °C at −40 °C to 0.5 °C at 250 °C
from 0.5 °C at 250 °C to 2 °C at 1100 °C
|
| Clinical infrared thermometers; Radiation pyrometers;
| Temperature;
| To be determined;
| | from -40 °C to 2900 °C
|
|
CAPABILITY
Radiation pyrometers
from 0.1 °C at −40 °C to 0.3 °C at 250 °C
from 0.5 °C at 250 °C to 2 °C at 1100 °C
from 2 °C at 1100 °C to 4 °C at 2900 °C
Calibration of ear thermometers
in the range 25 °C to 45 °C
with a least uncertainty of measurement of -
0.1 °C
|
Temperature metrology - Temperature measuring equipment
| Liquid in glass (LIG) thermometers;
| Temperature;
| Measurement against reference standard;
| | from −200 °C to 300 °C
|
|
CAPABILITY
0.3 °C from −200 °C to −50 °C
25 mK from −50 °C to −10 °C
5 mK from −10 °C to 50 °C
3 mK at 0 °C
15 mK from 50 °C to 100 °C
40 mK from 100 °C to 250 °C
0.15 °C from 250 °C to 300 °C
|
| Base metal thermocouples; Surface probes;
| mV over oC range;
| Direct temperature and electrical measurement against reference standard;
| | from −200 °C to 1100 °C
|
|
CAPABILITY
Calibration of Base Metal Thermocouples
with least uncertainties of measurement of -
Type T
1.0 μV from −200 °C to 0 °C
(1.0 + 0.01% E) μV from 0 °C to 200 °C
Type K
(1.0 + 0.036% E) μV from −200 °C to 200 °C
(1.0 + 0.055% E) μV from 200 °C to 400 °C
(4.14 + 0.06% E) μV from 400 °C to 1100 °C
where E is the thermocouple voltage
Calibration of surface temperature sensors
with least uncertainties of measurement of -
from 0.21 °C at 20 °C to 0.70 °C at 350 °C
|
| Digital temperature measuring systems;
| Temperature;
| Measurement against reference standard;
| | from -200 °C to 1100 °C
|
|
CAPABILITY
Thermocouple Measuring Systems
Type T
1.0 μV from −200 °C to 0 °C
(1.0 + 0.01% E) μV from 0 °C to 200 °C
Type K
(1.0 + 0.036% E) μV from −200 °C to 200 °C
(1.0 + 0.055% E) μV from 200 °C to 400 °C
(4.14 + 0.06% E) μV from 400 °C to 1100 °C
where E is the thermocouple voltage
Calibration of surface temperature measuring system
with least uncertainties of measurement of -
from 0.21 °C at 20 °C to 0.70 °C at 350 °C
Metallic resistance Measuring Systems
Calibration of standard PRTs using temperature fixed points
with least uncertainties of measurement of -
from 1 mK at −189.34 °C to 0.5 mK at −38.83 °C
0.5 mK from −38.83 °C to 419.53 °C
from 0.5 mK at 419.53 °C to 1.5 mK at 660.32 °C
from 1.5 mK at 660.32 °C to 13 mK at 961.78 °C
Calibration of standard PRTs and industrial PRTs by comparison
against standard PRTs
with least uncertainties of measurement of -
5 mK at −200 °C
5 mK at −80 °C
3 mK at 0 °C
3 mK at 250 °C
6 mK at 550 °C
13 mK at 960 °C |
Temperature metrology - Temperature standards and reference equipment
| Platinum-gold (Pt-Au) thermocouples; Rare metal thermocouples;
| mV per oC;
| To be determined;
| | from 0 °C to 1560 °C
|
|
CAPABILITY
Calibration of Rare Metal Thermocouple
with least uncertainties of measurement of -
(0.31 + 0.011% E) μV from 0 °C to 1100 °C
(0.31 + 0.014% E) μV from 0 °C to 1560 °C
(0.008% E) μV at 200 °C for homogeneity
where E is the thermocouple voltage
Calibration of Pt-Au thermocouples
with least uncertainties of measurement of -
19 mK from 0 °C to 50 °C
14 mK from 50 °C to 420 °C
26 mK from 420 °C to 960 °C
|
| Platinum resistance thermometers (PRTs) reference standards;
| Temperature;
| To be determined;
| | from −200 °C to 961.78 °C
|
|
CAPABILITY
Calibration of standard PRTs using temperature fixed points
with least uncertainties of measurement of -
from 1 mK at −189.34 °C to 0.5 mK at −38.83 °C
0.5 mK from −38.83 °C to 419.53 °C
from 0.5 mK at 419.53 °C to 1.5 mK at 660.32 °C
from 1.5 mK at 660.32 °C to 13 mK at 961.78 °C
Calibration of standard PRTs and industrial PRTs by comparison
against standard PRTs
with least uncertainties of measurement of -
5 mK at −200 °C
5 mK at −80 °C
3 mK at 0 °C
3 mK at 250 °C
6 mK at 550 °C
13 mK at 960 °C
|
| Black body sources;
| Temperature;
| To be determined;
| | from −40 °C to 2000 °C
|
|
CAPABILITY
from 0.4 °C at −40 °C to 0.3 °C at 50 °C
from 0.3 °C at 50 °C to 1.4 °C at 1000 °C
from 1.4 °C at 1000 °C to 2.9 °C at 2000 °C
Calibration of ear thermometer blackbodies
in the range 25 °C to 45 °C
with a least uncertainty of measurement of -
0.025 °C
|
| Dry block calibrators;
| Temperature;
| To be determined;
| | from −50 °C to 650 °C
|
|
CAPABILITY
from 0.15 °C at −50 °C to 0.05 °C at 50 °C
from 0.05 °C at 50 °C to 0.15 °C at 650 °C
|
| Temperature reference standards - Fixed points;
| Silver (Ag) freezing point ; Aluminum (Al) freezing point; Argon (Ar) triple point; Cadmium freezing point; Gallium melting point; Indium (In) freezing point; Mercury (Hg) triple point; Tin (Sn) freezing point; Water triple point; Zinc freezing point;
| Direct measurement against a reference standard; Direct measurement against argon triple point; Direct measurement against H2O triple point; Direct measurement against mercury triple point;
| | |
|
CAPABILITY
1 mK at Ar triple point
0.3 mK at Hg triple point
0.1 mK at water triple point
0.3 mK at Ga melting point
0.5 mK at In freezing point
0.3 mK at Sn freezing point
0.4 mK at Cd freezing point
0.5 mK at Zn freezing point
1.5 mK at Al freezing point
10 mK at Ag freezing point
|
Printable version