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Keysight One-Stop Calibration Capabilities – United Kingdom & Ireland

View our capabilities for:

  • ACCELEROMETRY
  • ACOUSTIC
  • DIMENSIONAL
  • ELECTRICAL
  • FIBRE OPTICS
  • FLOW
  • FORCE
  • HUMIDITY
  • MASS
  • POWER FLUX DENSITY
  • PRESSURE
  • RF & MICROWAVE
  • TEMPERATURE
  • TORQUE
     

 

Accelerometry

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
Maximum Normal Peak 5 Hz to 20Hz 3%  
Acceleration 98 ms-2 20 Hz to 5 KHz 2%  

 Acoustic

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
Electrical performance tests Sound level meters Types 1,2 & 3 30 dB to 130 dB 0.2 dB  
Acoustic performance tests Sound level meters Types 1,2 & 3 65 dB to 120 dB 0.2 dB  

Electrical

Measured Quantity Instrument or Gauge Range Calibration and Measurement
Capability Expressed as An
Expanded Uncertainty (k=2)
Statements
DC RESISTANCE Decade Values 1 mΩ 7.5 ppm + 0.25μΩ See note 1
10 mΩ 7.5 ppm  
100 mΩ 7.5 ppm  
1 Ω 3.9 ppm  
10 Ω 2.4 ppm  
100 Ω 1.2 ppm  
1 kΩ 1.3 ppm  
10 kΩ 1.5 ppm  
100 kΩ 2.2 ppm  
1 MΩ 2.2 ppm  
10 MΩ 6.1 ppm  
100 MΩ 30 ppm  
1 GΩ 0.18%  
10 GΩ 0.18%  
100 GΩ 0.45%  
1 TΩ 0.45%  
Measurement 0 Ω to 0.5 Ω 7.5 ppm + 0.25 μΩ  
0.5 Ω to 5 Ω 7.4 ppm  
5 Ω to 50 Ω 5.4 ppm  
50 Ω to 500 Ω 5.4 ppm  
500 Ω to 5 kΩ 5.4 ppm  
5 kΩ to 50 kΩ 5.4 ppm  
50 kΩ to 500 kΩ 5.4 ppm  
500 kΩ to 1 MΩ 5.4 ppm  
1 MΩ to 10 MΩ 7.2 ppm  
10 MΩ to 100 MΩ 0.04%  
100 MΩ to 1 GΩ 0.10%  
1 GΩ to 10 GΩ 0.10%  
10 GΩ to 100 GΩ 0.20%  
100 GΩ to 1T Ω 0.45%  
 DC VOLTAGE  Standard Cells    1.0 μV  See note 2
 1.018 V to 1.019 V  1.0 μV  
 Other Values  10 μV to 1.1 V  2.8 ppm + 0.3 uV  
 1.1 V to 11 V  2.8 ppm  
 11 V to 100 V  2.8 ppm  
 100 V to 1100 V  3.5 ppm  
 1100 V to 20 kV  0.10%    
 20 kV to 70 kV  0.14%  
 70 kV to 100 kV  0.20%  
 DC CURRENT    100 nA to 10 μA  13 ppm + 5pA  See note 6
 10 μA to 10 mA  7 ppm  
 10 mA to 100 mA  7 ppm  
 100 mA to 2 A  7 ppm  
 2 A to 100 A  60 ppm  
 10 A to 100 A  0.08% + 0.023A  See note 9
 100 A to 3000 A  0.26% + 0.6A  
 AC VOLTAGE    50 Hz to 10 kHz  80 ppm + 4 μV  See note 6
 1 mV to 250 mV    
   20 Hz to 20 kHz    
 5 uV to 1 mV  1% + 1 μV  
 1 mV to 250 mV  0.015% + 10 μV  
 250 mV to 1 V  60 ppm  
 1 V to 50 V  60 ppm  
 50 V to 200 V  60 ppm  
 200 V to 500 V  180 ppm  
 500 V to 1 kV  180 ppm  
   20 kHz to 50 kHz    
 250 mV to 1 V  60 ppm  
 1 V to 50 V  60 ppm  
   50 kHz to 100 KHz    
 250 mV to 1 V  90 ppm  
 1 V to 50 V  90 ppm  
   100 kHz to 1 MHz    
 250 mV to 1 V  0.08%  
 1 V to 50 V  0.10%  
   50 Hz to 60 Hz    
 1 kV to 20 kV  0.10%  
 20 kV to 50 kV  0.45%  
 AC CURRENT    20 Hz to 1 kHz    See note 6
 10 uA to 250 μA  0.03%  
 250 μA to 2 A  0.03%  
   20 Hz to 400 Hz    
 2 A to 10 A  0.03%  
 10 A to 50 A  0.17%  
   50 Hz to 60 Hz    
 50 A to 3000 A  0.5% + 0.5 A  
 AC POWER    50 Hz to 60 Hz    See notes 3 & 4
 0.05 W to 4 kW  0.05%  
 4 kW to 20 kW  0.20%  
 PHASE ANGLE    20 Hz to 10 kHz  0.05º  See note 5
 0º to 360    
 FREQUENCY    1 Hz to 10 Hz  6 in 107  
 10 Hz to 100 Hz  6 in 108  
 100 Hz to 1 kHz  6 in 108  
 1 kHz to 10 kHz  3 in 109  
 10 kHz to 100 kHz  2 in 109  
 100 kHz to 1 MHz  1 in 1010  
 1 MHz to 10 MHz  1 in 1010  
 10 MHz to 40 GHz  4 in 1010  
 AC RESISTANCE  1 Ω, 10 Ω , 100 Ω  50 Hz to 2 kHz  0.02%  See note 6
 1 kΩ, 10 k Ω, 100 kΩ      
 1 MΩ  50 Hz to 2 kHz  0.03%  
 CAPACITANCE  1 pF  1 kHz  0.27%  
 1 pF  1 MHz  0.24%  
 10 pF  1 kHz, 1 MHz  0.05%  
 100 pF  1 kHz, 1 MHz  0.04%  
 1 nF  100 Hz,1 kHz,10 kHz  0.01%  
 1 nF  1 MHz  0.05%  
 10 nF  100 Hz,1 kHz,10 kHz  0.01%  
 100 nF  100 Hz,1 kHz,10 kHz  0.01%  
 1 μF  100 Hz,1 kHz  0.01%  
 1 μF  10 kHz  0.03%  
 10 μF  100 Hz,1 kHz  0.02%  
 100 μF  100 Hz,1 kHz  0.06%  
 Other Values  1 pF to 100 pF  1 kHz to 100 kHz  0.20%  
 100 pF to 1 μF  50 Hz to 20 kHz  0.10%  
 1 μF to 100 μF  50 Hz to 1 kHz  0.10%  
 INDUCTANCE  1 μH  1 kHz,10 kHz  0.37%  
 5 μH  1 kHz,10 kHz  0.30%  
 10 μH  1 kHz,10 kHz  0.30%  
 100 μH  1 kHz,10 kHz  0.04%  
 1 mH  100 Hz  0.15%  
 1 mH  1 kHz,10 kHz  0.03%  
 10 mH  1 kHz,10 kHz  0.04%  
 100 mH  100 Hz  0.15%  
 100 mH  1 kHz,10 kHz  0.03%  
 100 mH  10 kHz  0.06%  
 1 H  100 Hz  0.06%  
 1 H  1 kHz  0.03%  
 10 H  100 Hz  0.50%  
 Other Values  1 μH to 1 mH  1 kHz to 10 kHz  0.25%  
 1 mH to 100 mH  50 Hz to 10 kHz  0.15%  
 100 mH to 1 H  50 Hz to 1 kHz  0.25%  
 1 H to 10 H  100 Hz to 1 kHz  0.30%  

 RF POWER

 

   100 pW to 10 uW
 
   See note 6
 
 50 MHz to 26.5 GHz
 
 6.00%
 
 
   1 uW to 100 mW
 
   
 30 kHz to 100 kHz
 
 1.10%
 
 
 100 kHz to 2 GHz
 
 0.70%
 
 
 2 GHz to 4 GHz
 
 1.20%
 
 
 4 GHz to 10 GHz
 
 1.40%
 
 
 10 GHz to 18 GHz
 
 1.60%
 
 
 18 GHz to 26.5 GHz
 
 2.40%
 
 
 26.5 GHz to 40.0 GHz
 
 5.00%
 
 
 40 GHz to 50.0 GHz
 
 10.00%
 
 
   100 mW to 10 W
 
   
 30 kHz to 1 GHz
 
 1.00%
 
 
   100 mW to 5 W
 
   
 1 GHz to 2 GHz
 
 1.00%
 
 
   5 W to 50 W
 
   
 30 kHz to 2 GHz
 
 1.20%
 
 
   50 W to 100 W
 
   
 30 kHz to 2 GHz
 
 1.90%
 
 
   250 W to 800 W
 
   
 5 MHz to 100 MHz
 
 1.50%
 
 
   0.3 W to 1 kW
 
   
 1.8 MHz to 1 GHz
 
3.00%
 
 
   3 W to 10 kW
 
   
 100 kHz to 2500 kHz
 
 3.00%
 
 
 RF VOLTAGE  200μV to 10 V  9 kHz to 30 MHz
 
 1.70%
 
 See note 6
 
 30 MHz to 100 MHz
 
 1.90%
 
 
 100 MHz to 1 GHz
 
 2.00%
 
 
 1 GHz to 1.6 GHz
 
 4.10%
 
 
 1.6 Hz to 2 GHz
 
 5.40%
 
 
 AMPLITUDE MODULATION  Depth
 
 Carrier
 
   
 0% to 95%  50 kHz to 2 GHz
 
 1% + 0.1%
 
 See note 6
 
 Modulation
 
   
 50 Hz to 15 kHz
 
   
 Carrier
 
   
 50 kHz to 2 GHz
 
 1.50%
 
 
 Modulation
 
   
 30 Hz to 50 kHz
 
   
 FREQUENCY MODULATION  Deviation
 
 Carrier
 
   

 10 Hz to 99 kHz

 1.5 MHz to 2 GHz
 
   See note 6
 
 Modulation
 
   
 50 Hz to 15 kHz
 
 0.5% + 0.01 kHz
 
 
 Deviation
 
 Carrier
 
   

 99 kHz to 600 kHz

 1.5 MHz to 2 GHz
 
   
 Modulation
 
   
 50 Hz to 15 kHz
 
   
VOLTAGE REFLECTION
CO-EFFICIENT
   100 kHz to 1.3 GHz
 
 

Results and uncertainties may also be quoted in units of Return loss (dB) or VSWR

 0.0 to 0.3
 
 0.011 to 0.012
 
 
 0.3 to 0.6
 
 0.012 to 0.014
 
 
 0.6 to 1.0
 
 0.014 to 0.019
 
 
   >1.3 GHz to 3 GHz
 
   
 0.0 to 0.3
 
 0.011 to 0.015
 
 
 0.3 to 0.6
 
 0.012 to 0.016
 
 
 0.6 to 1.0
 
 0.016 to 0.028
 
 
   45 MHz to 2 GHz
 
   
 0.0 to 0.3
 
 0.011 to 0.012
 
 
 0.3 to 0.6
 
 0.012 to 0.014
 
 
 0.6 to 1.0
 
 0.014 to 0.019
 
 
   >2 GHz to 18 GHz
 
   
 0.0 to 0.3
 
 0.011 to 0.016
 
 
 0.3 to 0.6
 
 0.012 to 0.020
 
 
 0.6 to 1.0
 
 0.016 to 0.037
 
 
   >18 GHz to 26.5 GHz
 
   
 0.0 to 0.3
 
 0.011 to 0.016
 
 
 0.3 to 0.6
 
 0.012 to 0.020
 
 
 0.6 to 1.0
 
 0.016 to 0.037
 
 
   >26.5 GHz to 50 GHz
 
   
 0.0 to 0.3
 
 0.011 to 0.02
 
 
 0.3 to 0.6
 
 0.012 to 0.025
 
 
 0.6 to 1.0
 
 0.02 to 0.04
 
 
 RF ATTENUATION    100 kHz to 1.3 GHz
 
   See notes 6 & 8
 
 0 dB to 30 dB
 
 0.028 dB to 0.064 dB
 
 
 30 dB to 50 dB
 
 0.064 dB to 0.13 dB
 
 
 50 dB to 70 dB
 
 0.13 dB to 0.84 dB
 
 
 70 dB to 80 dB
 
 0.77 dB to 2.6 dB
 
 
 80 dB to 90 dB
 
 2.4 dB to 4.2 dB
 
 
   >1.3 GHz to 3 GHz
 
   
 0 dB to 30 dB
 
 0.036 dB to 0.068 dB
 
 
 30 dB to 50 dB
 
 0.067 dB to 0.14 dB
 
 
 50 dB to 70 dB
 
 0.13 dB to 0.95 dB
 
 
 70 dB to 80 dB
 
 0.84 dB to 2.9 dB
 
 
 80 dB to 90 dB
 
 2.6 dB to 4.7 dB
 
 
   45 MHz to 6 GHz
 
   
 0 dB to 30 dB
 
 0.040 dB to 0.069 dB
 
 
 30 dB to 50 dB
 
 0.069 dB to 0.14 dB
 
 
 50 dB to 70 dB
 
 0.12 dB to 0.99 dB
 
 
 70 dB to 80 dB
 
 0.64 dB to 3.1 dB
 
 
 80 dB to 90 dB
 
 2.0 dB to 4.9 dB
 
 
   >6 GHz to 12 GHz
 
   
 0 dB to 30 dB
 
 0.043 dB to 0.073 dB
 
 
 30 dB to 50 dB
 
 0.072 dB to 0.18 dB
 
 
 50 dB to 70 dB
 
 0.15 dB to 1.4 dB
 
 
 70 dB to 80 dB
 
 0.99 dB to 4.4 dB
 
 
 80 dB to 90 dB
 
 3.1 dB to 6.9 dB
 
 
   >12 GHz to 18 GHz
 
   
 0 dB to 30 dB
 
 0.056 dB to 0.081 dB
 
 
 30 dB to 50 dB
 
 0.081 dB to 0.18 dB
 
 
 50 dB to 70 dB
 
 0.18 dB to 1.4 dB
 
 
 70 dB to 80 dB
 
 1.4 dB to 4.4 dB
 
 
 80 dB to 90 dB
 
 4.4 dB to 6.9 dB
 
 
   18 GHz to 26.5 GHz
 
   
 0 dB to 30 dB
 
 0.056 dB to 0.081 dB
 
 
 30 dB to 50 dB
 
 0.081 dB to 0.18 dB
 
 
 50 dB to 70 dB
 
 0.18 dB to 1.4 dB
 
 
   26.5 GHz to 50 GHz
 
   
 0 dB to 30 dB
 
 0.1 dB to 0.16 dB
 
 
 30 dB to 50 dB
 
 0.16 dB to 0.36 dB
 
 
 50 dB to 70 dB
 
 0.36 dB to 2.8 dB
 
 
OSCILLOSCOPE CALIBRATION

Vertical Deflection

 100 μV to 60 mV
 
 0.25% + 1 μV
 
 
 60 mV to 200 V
 
 0.25%
 
 
DC Levels  6 mV to 60 mV
 
 1%
 
 
 60 mV to 200 V
 
 0.50%
 
 
Bandwidth  1 kHz to 100 MHz
 
 4%
 
 
 100 MHz to 500 MHz
 
 5%
 
 
 500 MHz to 2 GHz
 
 6%
 
 
Timebase Sweep Rate  10 ns to 50 ms
 
 0.40%
 
 
 50 ms to 5 s
 
 0.20%
 
 
Period measurement  10 ns to 50 ms
 
 0.1 ppm + 0.2 ps
 
 See note 7
 
 50 ms to 5 s
 
 0.01%
 
 
 POWER FLUX DENSITY    0.01 W/m2 to 30 W/m2
 
   
 10 kHz to 250 MHz
 
 1.0 dB
 
 
   0.01 mW/m2 to 1 mW/m2
 
   
 250 MHz to 18 GHz
 
 2.0 dB
 
 
 FIELD STRENGTH

 Electric Field

 0.05 V/m to 100 V/m
 
   
 10 kHz to 250 MHz
 
 1.0 dB
 
 
   0.05 V/m to 50 V/m
 
   
 250 MHz to 18 GHz
 
 2.0 dB
 
 
   1 V/m to 1000 V/m
 
   
 50 Hz to 30 kHz
 
 1.0 dB
 
 
   1000 V/m to 20000 V/m
 
   
 50 Hz
 
 1.0 dB
 
 
Magnetic Field  0.01 A/m to 0.25 A/m
 
   
 10 kHz to 250 MHz
 
 1.0 dB
 
 
 0.01 A/m to 22 A/m
 
   
 50 Hz to 5 kHz
 
 1.0 dB
 
 
   20 A/m to 1600 A/m
 
   
50 Hz 1.0 dB  

FIBRE OPTICS

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
 
Statements
 
OPTICAL POWER METER

Absolute responsivity of fibreoptic power meters with FC/PC connectors

Wavelength and power levels:
 
   

850 nm, -10, -20, -23 dBm

0.18 dB
 
Multi mode fibre
 
1300 nm -10, -20, -23 dBm
 
0.18 dB
 
Single mode fibre
 
1550 nm -10, -20, -23 dBm
 
0.18 dB
 
Single mode fibre
 
 

Linearity of response of fibre optic power meters with FC/PC connectors

850 nm, -10 dBm to -70 dBm
 
0.07 dB
 
Multi mode fibre
 
1300 nm, -5 dBm to -70 dBm
 
0.07 dB
 
Single mode fibre
 
1550 nm, 5 dBm to -70 dBm
 
0.07 dB
 
Single mode fibre
 

 OPTICAL ATTENUATORS

 Attenuation setting

850 nm, 0 dB to -60 dB 0.18 dB  
1300 nm, 0 dB to -65 dB
 
0.18 dB
 
 
1550 nm, 0 dB to -70 dB
 
0.18 dB
 
 

 Repeatability of attenuation setting

850 nm, 0 dB to -60 dB
 
0.05 dB
 
 
1300 nm, 0 dB to -65 dB
 
0.05 dB
 
 
1550 nm, 0 dB to -70 dB
 
0.05 dB
 
 
OPTICAL TIME DOMAIN REFLECTOMETERS (OTDR)  (Single mode fibre)
 
Wavelengths and length
 
   
   Distance scale error
 
1310, 1550 nm, 4 km
 
0.12 m
 
 
   Distance scale deviation
 
1310, 1550 nm, 4 km
 
0.03 m/km
 
 
   Locational readout error
 
  1 LS Digit + 0.03 m
 
 

CW FIBRE OPTIC LIGHT SOURCE

 Output power

850 nm to 1650 nm 0.3 dBm

CW source with RMS spectral width of less than 25 nm

 

 

Except where the following wavelength conditions are met:  
850 nm, 23 dBm to -70 dBm
 
0.18 dBm
 
1300 nm, 27 dBm to -70 dBm
 
0.18 dBm
 
1550 nm, 27 dBm to -70 dBm
 
0.18 dBm
 
 
 Wavelength 600 nm to 1700 nm
 
0.5 nm
 
 
 Spectral width 0.1 nm to 5.9 nm
 
0.5 nm
 
 
6 nm to 25 nm
 
1 nm
 
 

FLOW

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
                                Calibration of anemometers  2 m/s to 4 m/s
 
1.7 % + 0.1 m/s
 
 
   4 m/s to 26 m/s 1.20%
 
 

FORCE

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
                             Calibration of lever and push
pull force measuring devices in
tension and compression
 
Up to 1,000 N
 
0.30%
 
 
 Tensile
 
Up to 10,000 N
 
0.30%
 
 

HUMIDITY

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
                  

 Generation

11.30%
 
 1.10%
 
 
   33.00%
 
 1.10%
 
 
 75.40%
 
 1.10%
 
 
 97.10%
 
 1.10%
 
 
 Others
 
 5% to 95%
 
 1.50%
 
 

 Measurement

 0% to 90%
 
 2%
 
 
 90% to 100%
 
   

MASS

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
     1 mg to 0.1 g
 
 0.10%
 
 
   0.1 g to 1g
 
 0.001%
 
 
   1 g to 1kg
 
 0.0001%
 
 
   1 kg to 5 kg
 
 0.0005%
 
 
   5 kg to 20 kg
 
 0.00005%
 
 
   5 kg to 400 kg
 
 0.05%
 
 

 

PRESSURE

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
     0 to 350 mbar absolute
 
 0.05%
 
 
   800 to 1150 mbar absolute
 
 0.15 mbar
 
 
   -1 bar to 1 bar (air)
 
 0.10%
 
 
   1 bar to 100 bar (air)
 
 0.02%
 
 
   1 bar to 6 bar(oil)
 
 0.025%
 
 
   6 bar to 1200 bar(oil)
 
 0.02%
 
 

 

TEMPERATURE

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
                                 Generation  -100 ºC to 250 ºC
 
 0.1 ºC
 
 
   250 ºC to 650 ºC
 
 0.3 ºC
 
 
   650 ºC to 1000 ºC
 
 1.3 ºC
 
 
   1000 ºC to 1300 ºC
 
 2.4 ºC
 
 
 Measurement
 
 -100 ºC to 250 ºC
 
 0.04 ºC
 
 
   250 ºC to 650 ºC
 
 0.08 ºC
 
 
   650 ºC to 1000 ºC
 
 1.1 ºC
 
 
   1000 ºC to 1300 ºC
 
 2.2 ºC
 
 
 Infrared thermometers
 
 -15 ºC to 50 ºC
 
 0.4 ºC
 
 
   50 ºC to 100 ºC
 
 0.5 ºC
 
 
   100 ºC to 200 ºC
 
 0.7 ºC
 
 
   200 ºC to 350 ºC
 
 1.2 ºC
 
 
   350 ºC to 500 ºC
 
 1.6 ºC
 
 
   500 ºC to 980 ºC
 
 3.5 ºC
 
 
 Electrical Simulation
 of temperature
 
     

 Base metal thermocouples

 -270 ºC to 0 ºC
 
 0.24 ºC
 
 
 0 ºC to 1370 ºC
 
 0.16 ºC
 

excluding cold
junction
compensation

   -270 ºC to 0 ºC
 
 0.26 ºC
 
 0 ºC to 1370 ºC
 
0.20 ºC
 

 Including cold junction

 Noble metal thermocouples  0 ºC to 200 ºC
 
0.51 ºC
 
 200 ºC to 800 ºC
 
0.50 ºC
 

excluding cold
junction
compensation

 800 ºC to 1760 ºC
 
1.0 ºC
 
   0 ºC to 200 ºC
 
0.60 ºC
 
 200 ºC to 800 ºC
 
0.50 ºC
 

 Including cold junction

 800 ºC to 1760 ºC
 
1.0 ºC
 
 Cold junction compensation
 
 At ambient of 23 ºC
 
 1.0 ºC
 
 

 

TORQUE

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
     1 N·cm to 35 N·cm
 
 0.06%
 
 
 35 N·cm to 5 N·m
 
 0.10%
 
 
 5 N·m to 23 N·m
 
 0.10%
 
 
 23 N·m to 50 N·m
 
 0.25%
 
 
 50 N·m to 500 N·m
 
 0.17%
 
 
 500 N·m to 1000 N·m
 
 0.20%
 
 
 1000 N·m to 5000 N·m
 
 0.20%
 
 

 

DIMENSIONAL

Measured Quantity Instrument or Gauge Range Calibration and
Measurement Capability
Expressed as An Expanded
Uncertainty (k=2)
Statements
 RANGE IN MILLIMETRES AND UNCERTAINTY IN MICROMETRES UNLESS OTHERWISE STATED
 
 LENGTH  Thread measuring cylinders
 
 As BS 5590:1978
 
 1
 
 

 Plain plug gauges (parallel), rollers and cylindrical setting standards

 

 1 to 100 Diameter
 
 1
 
 
 100 to 300 Diameter
 
 1.5
 
 
 Plain plug gauges (taper)
 
 Up to 100 Diameter
 
 3
 
 
 Plain ring gauges (parallel)
 
 Up to 300 Diameter
 
 1
 
 
 Length gauges (Flat & Spherical)
 
 Up to 1.2 m
 
 3.5
 
 
 Plain gap gauges (parallel)
 
 Up to 600
 
 2
 
 
 Profile gauges, jig and fixtures
 
 Up to 600 x 600 x 300
 
   
 Parallels
 
 As BS 906:1972
 
   
   Up to 50 x 100 x 400
 
 2.5
 
 

 Vee blocks

 As BS 3731:1987
 
   
 Up to 150
 
 6
 
 
 ANGLE

 Squares (Blade type)

 As BS 939:2007
 
   
 Up to 600
 
 4
 
 

 Squares (Cylindrical)

 As BS 939:2007
 
   
 Up to 600
 
 4
 
 

 Squares (Block)

 As BS 939:2007
 
   
Up to 600
 
4  
 Angle plates and box angle plates
 
AS BS 5535:1978
 
   
  Up to 500 length

 
 5
 
 

 Sine bars and tables

As BS 3064:1978
 
   
 Up to 500 Length
 
 3
 
 
 Sine centres  Up to 500 Length or between centres
 
 3
 
 
 FORM  Suface plates (granite and cast iron)
 
 As BS 817:2008
 
 1.5 + (0.8 x diagonal in m)
 
 
 Straight Edges
 
     
 Cast iron
 
 As BS 5204:Part 1:1975 Up to 1500
 
 1 + ( 2 x length in m)
 
 See note 11
 
 Steel
 
 As BS 5204:Part 2:1977 Up to 1500
 
 1 + ( 2 x length in m)
 
 See note 11
 
 Granite
 
 As BS 5204:Part 2:1977 Up to 1500
 
 1 + ( 2 x length in m)
 
 See note 11
 
MEASURING INSTRUMENTS AND MACHINES  Micrometer
 
     
 External
 
 As BS 870:2008
 
 2
 
 
 Internal
 
 As BS 959:2008
 
 4
 
 
 Depth
 
 As BS 6468:2008
 
 3.5
 
 
 Micrometer heads
 
 As BS 1734:1951
 
 1
 
 
 Bench micrometer
 
   1
 
 
 Height setting micrometer
 
 Up to 300
 
 5
 
 
 Riser blocks for above
 
 Up to 600
 
 3
 
 
 Bore micrometer
 
 Up to 150
 
 3
 
 
 Vernier gauges
 
     
 Caliper
 
 As BS 887:1982
 
 4
 
 
 Height
 
 As BS 1643:1983
 
 2.5
 
 
 Depth
 
 As BS 6365:1983
 
 6
 
 
 Dial gauges and dial test indicators
 
 As BS 907:2008 and BS 2795:1981
 
 2
 
 
 Electronic microprocessor controlled height gauge
 
 Up to 1 m
 
 1 + (5 x length in m)
 
 
Bench centres
 
 Up tp 1 m between centres
 
 4.5
 
 

 Thread diameter measuring

 


 
 As NPL schedules MOY/SCM 1/9
 
 3
 
 
 Up to 300
 
   
Profile projectors  Up to 100 magnifcation
 
 125 at the screen
 
 
Bevel projectors
 
 As BS 1685:2008
 
 3.5
 
 
 Comparators (external)
 
 As BS 1054:1975
 
 1% of range
 
 
   Up to 10,000 magnification
 
 Minimum of 0.2
 
 
 Steel rules
 
 Up to 1 m
 
 10 + (10 x length in m)
 
 
 Spirt levels  As BS 3509:1962 and BS 958:1968
 
 Mean sensitivity 10% of nominal
 
 
     Minimum 0.5 seconds of arc
 
 
 Feeler gauges  BS 957:Part 1:2008
 
 2
 
 
   BS 957:Part 1:2008
 
   

 

Notes:

  1. Theres values are available for the verification of measuring instruments.
  2. The stated uncertainty for standard cells can only be given with those in a temperature controlled enclosure.
  3. At unity power factor.
  4. Power can also be measured at power factor settings of 0.1,0.5 and 0.9 with increased uncertainties.
  5. Phase angle can also be generated for the calibration of phasemeters.
  6. These measured quantities can be measured outside of these ranges with increased uncertainties.
  7. Calibration timemark generators.
  8. For coaxial 50Ω systems fitted with a VSWR of <1.5.
  9. Current generated using 100 turn coil.
  10.  Maximum Mass for Accelerometer under test: 100 g.
  11.  The uncertainty quoted is for the departure from flatness, strainghtness, parallelism, or squareness, is the parallel planes which just enclose the surface under conderation