Facilities

Air Speed

Calibration Wind Tunnel

Air Speed Standard

Type: Closed-Circuit Wind Tunnel
Working Fluid: Ambient Air
P_o = P_amb
T_o = T_amb
RH = RH_amb

Width: 1.52 m (adjustable)
Height: 2.13 m
Range: 0.15 - 40 m/s
{30 - 7874 ft/min}
{.34 - 80 MPH}

Type: Laser Doppler Velocimeter (LDV)
Status: National Standard

Source of Traceability: Spinning Disk

Uncertainty: RMS of (0.44% and 0.006 m/s)
Confidence Level: 95%

Gas Flow

34 L & 677 L Pressure-Volume-Temperature-time (PVTt) Facility

26 m³ Pressure-Volume-Temperature-time (PVTt) Facility

Working Gas Flow Standard (WGFS)

Type: Static Volumetric Flow Standard
Status: National Standard
Source of Traceability: Mass, Pressure, Temperature, and Time
Range:

3x10^-5 to 2.0 m³/min or
3x10^-2 to 2000 L/min

Uncertainty: ± 0.02% to ± 0.05%
Confidence Level: 95%
Working Fluid: Non-corrosive, non-hazardous gases
P = 100 - 700 kPa
T = T_amb

Tube Sizes: 3 - 51 mm
Fitting Type: Swagelock, AN (37 flare), VCO, VCR, etc.

References

Type: Static Volumetric Flow Standard
Status: National Standard
Source of Traceability: Mass, Pressure, Temperature, and Time
Range:

8.62x10^-1 - 7.76x10¹ m³/min or
8.62x10² - 7.76x10⁴ L/min

Uncertainty: ± 0.13%
Confidence Level: 95%
Working Fluid: dry air
P = 100 - 700 kPa
T = T_amb

Pipe Sizes: 102 - 203 mm
Flange Type: ASA 150, 300, or 600 lb
Pipe Schedule: ANSI 40, or ANSI 80

References

Type: Critical flow venturi or critical nozzle working standard
Status: National Standard
Source of Traceability: Pressure, Temperature, 34 L, 677 L & 26 m³ PVTt standards
Range:

1x10^-3 - 13 m³/min or
1 - 13000 L/min

Uncertainty: ± 0.1% to ± 0.3%
Confidence Level: 95%
Working Fluid: dry air (over the entire flow range); Non-corrosive, Non-hazardous gases at low flows
P = 100 - 300 kPa
T = T_amb

Pipe Sizes: 3 - 203 mm
Flange Type: Swagelock, AN (37 flare), VCO, VCR, ASA 150, 300, or 600 lb
Pipe Schedule: ANSI 40, or ANSI 80

References

Pictures | Schematic

Water Flow

Water Works

Type: Static Gravimetric Flow Standard
Status: Out of Service due to Restoration
Source of Traceability: Mass, Density, Pressure, Temperature, and Time
Range: (see below)
Uncertainty: ± 0.12%
Confidence Level: 95%
Working Fluid: Domestic Water
P = 100 - 1100 kPa
T = T_amb
Flange Type: ASA 150 lb, Victaulic^TM couplings, or adapters thereto
References:

Tank 1	Tank 2	Tank 3	Tank 4
Volume: 20.4 m³ Tare Weight: 2900 kg Range: 38.14 - 0.877 m³/min Pipe Sizes: 203 - 401 mm Pipe Schedule: ANSI 40	Volume: 3.13 m³ Tare Weight: 862 kg Range: 4.941 - 0.114 m³/min Pipe Sizes: 102 - 203 mm Pipe Schedule: ANSI 40	Volume: 0.885 m³ Tare Weight: 168 kg Range: 1.561 - 0.036 m³/min Pipe Sizes: 51 - 102 mm Pipe Schedule: various	Volume: 0.177 m³ Tare Weight: 23 kg Range: 0.336 - 0.008 m³/min Pipe Sizes: 25 - 51 mm Pipe Schedule: various

Pictures | Schematic

Liquid Hydrocarbon Flow

Cox Flow Bench

Flow Calibration Test Standard (FCTS)

Type: Dynamic Gravimetric Flow Standard
Status: National Standard
Source of Traceability: Mass, Density Pressure, Temperature, and Time
Range:

5.30e-5 - 5.30e-1 m³/min
5.30e-2 - 5.30e2 L/min
{0.014 - 140 gal/min}

Uncertainty: ± 0.12%
Confidence Level: 95%
Working Fluid: MIL-C-7024C (sometimes called Stoddard solvent). A surrogate liquid for JP-4 and JP-5 jet fuels.
P = 203 - 372 kPa
T = T_amb

Tube Sizes: 6.35 - 76.2 mm
Fitting Type: Swagelock, AN, etc.
Tube Wall Thickness: (various)

References:

Type: Dynamic Volumetric Flow Standard
Status: Prototype
Source of Traceability: Length, Pressure, Temperature, and Time
Range: (see below)
Uncertainty: ± 0.025% (projected)
Confidence Level: 95%
Working Fluid: MIL-C-7024C (sometimes called Stoddard solvent). A surrogate liquid for JP-4 and JP-5 jet fuels.
P = 100 - 700 kPa
T = T_amb

Fitting Type: Swagelock, AN, etc.
Tube Wall Thickness: (various)

References:

Small Piston:

Volume: 0.528793 m³
Range:
3.80e-5 - 1.14e-2 m³/min
3.80e-2 - 11.35 L/min
{0.01 - 3 gal/min}
Tube Sizes: ?? - ?? mm

Medium Piston:

Volume: 4.50407 m³
Range:
7.57e-3 - 1.89e-1 m³/min
7.57 - 1.89.27 L/min
{2 - 50 gal/min}
Tube Sizes: ?? - ?? mm

Large Piston:

Volume: 25.02232 m³
Range:
1.51e-1 - 1.14 m³/min
1.51.42 - 1135.62 L/min
{40 - 300 gal/min}
Tube Sizes: ?? - ?? mm

Pictures | Schematic

Liquid Density

Gravimetric Densitometer	Paar Densitometer	Master Hydrometers	NIST Standard Reference Material (SRM) 211d: Toluene	NIST Standard Reference Material (SRM) 2214: Isooctane
Type: Gravimetric Densitometer Standard Status: National Standard Source of Traceability: Single Crystal Silicone Disk, Mass, and Temperature Range: 600 - 1000 kg/m³ Uncertainty: ± 4 ppm Confidence Level: 95% Working Fluid: Non-silicone based, non-corrosive liquids P = P_amb T = 288.15 - 298.15 K	Type: Oscilating U-tube Densitometer Status: Transfer Standard Source of Traceability: Gravimetric Densitometer Specific Gravity: 1.29e-3 - 2.0 Uncertainty: ± 50 ppm Confidence Level: 95% Working Fluid: Non-silicone based, non-glass etching liquids P = P_amb T = 288.15 - 298.15 K	Type: Glass Hydrometers Status: National Working Standard Source of Traceability: Gravimetric Densitometer Specif Gravity: 0.65 - 2.0 [5 - 200 % proof] Uncertainty: ± 0.00072 scale div. Confidence Level: 95% Working Fluid: Non-silicone based, non-glass etching liquids P = P_amb T = T_amb	Type: Glass Sealed Hydrocarbon Ampule Status: in review NIST SRM Source of Traceability: Gravimetric Densitometer Range: 862.170 - 871.476 kg/m³ Uncertainty: ± 0.025 kg/m³ (± 29 ppm) Confidence Level: 95% Working Fluid: Toluene C₆H₅CH₃ P = P_amb T = 288.15 - 298.15 K	Type: Glass Sealed Hydrocarbon Ampule Status: in review NIST SRM Source of Traceability: Gravimetric Densitometer Range: 687.753 - 695.969 kg/m³ Uncertainty: ± 0.035 kg/m³ (± 51 ppm) Confidence Level: 95% Working Fluid: (Trimethylpentane) Isooctane (CH₃)₂CHCH₂C(CH₃)₃ P = P_amb T = 288.15 - 298.15 K
Pictures \| Schematic	Pictures \| Schematic	Pictures	Pictures	Pictures

Facilities

Air Speed

Gas Flow

Water Flow

Liquid Hydrocarbon Flow

Liquid Density

Liquid Volume