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CMCs General Physics (31)
PHYSICS
Dimensional metrology (7)
Mass, mass standards (6)
Fluid flow (4)
Temperature (4)
Pressure (3)
Frequency (3)
Time scale difference (2)
Laser frequencies (2)
GEOGRAPHIC LOCATION
APMP (31)
Viet Nam (31)
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Your query 'VN' produced 31 results New search
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Viet Nam, VMI-STAMEQ (Viet Nam Metrology Institute, Directorate for Standards and Quality)
Complete CMCs in Time and Frequency for Viet Nam (.PDF file)
Time scale difference. Local clock vs UTC(VMI), -1 s to 1 s
Absolute expanded uncertainty (k = 2, level of confidence 95%) in ns: 2
Time interval measurement
1 pps amplitude: > 0.5 V (50 )
Averaging time: 1 day
DUT effects excluded
Approved on 19 July 2010
Internal NMI service identifier: VN1.1.1
 
Time scale difference. Local clock vs UTC, -1 s to 1 s
Absolute expanded uncertainty (k = 2, level of confidence 95%) in ns: 200
Time comparison against the predicted time
1 pps amplitude: > 0.5 V (50 )
Averaging time: 5 days
Prediction time: 45 days
DUT effects excluded
Approved on 19 July 2010
Internal NMI service identifier: VN1.1.2
 
Frequency. Local frequency standard, 10 MHz
Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 2.0E-13
Direct frequency measurement
Gate time: 1000 s
Number of measurements: 100
Amplitude: > 0.5 V (50 )
DUT effects excluded
Approved on 19 July 2010
Internal NMI service identifier: VN2.1.1
 
Frequency. Local frequency standard, 5 MHz
Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 2.0E-13
Direct frequency measurement
Gate time: 1000 s
Number of measurements: 100
Amplitude: > 0.5 V (50 )
DUT effects excluded
Approved on 19 July 2010
Internal NMI service identifier: VN2.1.1
 
Frequency. Local frequency standard, 1 MHz
Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 2.0E-13
Direct frequency measurement
Gate time: 1000 s
Number of measurements: 100
Amplitude: > 0.5 V (50 )
DUT effects excluded
Approved on 19 July 2010
Internal NMI service identifier: VN2.1.1
 
Laser radiations. Stabilized He-Ne laser: vacuum wavelength, 633 nm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in fm: 0.04
Optical beat frequency
Temperature: (20 ± 3) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-50
 
Laser radiations. Stabilized He-Ne laser: absolute frequency, 474 THz
Absolute expanded uncertainty (k = 2, level of confidence 95%) in kHz: 24
Optical beat frequency
Temperature: (20 ± 3) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-50
 
End standards. Gauge blocks: central length L, steel, 0.5 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[28, 0.30L], L in mm, value varies from 28 nm to 41 nm
Interferometry extract fraction
Temperature: (20 ± 0.5) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-52
 
End standards. Gauge blocks: central length L, steel, 0.5 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[64, 1.5L], L in mm, value varies from 64 nm to 163 nm
Mechanical comparison
Temperature: (20 ± 0.5) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-06
 
End standards. Gauge blocks: central length L, tungsten carbide, 0.5 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[62, 1.20L], L in mm, value varies from 62 nm to 135 nm
Mechanical comparison
Temperature: (20 ± 0.5) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-06
 
End standards. Gauge blocks: central length L, ceramic, 0.5 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[62, 1.50L], L in mm, value varies from 62 nm to 163 nm
Mechanical comparison
Temperature: (20 ± 0.5) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-06
 
Line standards. Precision line scale: line spacing L, steel, 0.01 mm to 1000 mm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: [0.6, 1.8L], L in m, value varies from 0.6 µm to 1.9 µm
Line scale interferometer
Temperature: (20 ± 0.5) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-32
 
Line standards. Precision line scale: line spacing L, glass, 0.01 mm to 1000 mm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: [0.6, 1.5L], L in m, value varies from 0.6 µm to 1.62 µm
Line scale interferometer
Temperature: (20 ± 0.5) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-32
 
Diameter standard. External cylinder (plug): diameter L, 1 mm to 200 mm
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: [0.38, 1.8L], L in m, value varies from 0.38 µm to 0.52 µm
Length measuring machine with laser interferometer
Temperature: (20 ± 0.5) °C
Approved on 28 February 2011
Internal NMI service identifier: VMI-STAMEQ/V01-41
 
Mass (E2). Mass standard, 1 mg to 100 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.002 to 0.0053
Comparison in air
Temperature: 20 °C
Humidity: (40 to 50) % RH
Approved on 09 September 2010
Internal NMI service identifier: VMI-STAMEQ/1
Uncertainty table
 
Mass (E2). Mass standard, 0.1 g to 1 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0053 to 0.010
Comparison in air
Temperature: 20 °C
Humidity: (40 to 50) % RH
Approved on 09 September 2010
Internal NMI service identifier: VMI-STAMEQ/2
Uncertainty table
 
Mass (E2). Mass standard, 1 g to 10 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.010 to 0.020
Comparison in air
Temperature: 20 °C
Humidity: (40 to 50) % RH
Approved on 09 September 2010
Internal NMI service identifier: VMI-STAMEQ/3
Uncertainty table
 
Mass (E2). Mass standard, 10 g to 100 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.020 to 0.053
Comparison in air
Temperature: 20 °C
Humidity: (40 to 50) % RH
Approved on 09 September 2010
Internal NMI service identifier: VMI-STAMEQ/4
Uncertainty table
 
Mass (E2). Mass standard, 0.1 kg to 1 kg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.053 to 0.53
Comparison in air
Temperature: 20 °C
Humidity: (40 to 50) % RH
Approved on 09 September 2010
Internal NMI service identifier: VMI-STAMEQ/5
Uncertainty table
 
Mass (E2). Mass standard, 1 kg to 20 kg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.53 to 10
Comparison in air
Temperature: 20 °C
Humidity: (40 to 50) % RH
Approved on 09 September 2010
Internal NMI service identifier: VMI-STAMEQ/6
Uncertainty table