Results for: Standards and Calibration Laboratory
Filters
CMC Quick search Filters close;
?
Added keywords act as an additional filter. Keywords separated by a space will be treated by the logical function AND automatically. You may also use OR. Keyword searches also find close matches. Placing quotation marks (") before and after the search word, e.g. "word", will allow for exact matches.

In case of multiple search, please use ADVANCED SEARCH.
195 results
Reset all
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)
Hong Kong, China, SCL (Standards and Calibration Laboratory)
Sound calibrators , Sound pressure level : 94 dB (reference: 20 µPa) to 114 dB (reference: 20 µPa)
Sound calibrator
Absolute expanded uncertainty : 0.14 dB
Calibrated measurement microphone
Frequency : > 4 kHz to 16 kHz
Microphone type : LS2P
Approved on 18 August 2009
Institute service identifier : SCL/2.2.1-002
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS1P
Absolute expanded uncertainty : 6.0E-2 dB
IEC 61094-2:1992
Frequency : > 6 kHz to 8 kHz
Approved on 18 August 2009
Institute service identifier : SCL/1.1.1-003
Measurement microphones , Pressure sensitivity level
Microphone types LS2, WS2 only
Absolute expanded uncertainty : 0.1 dB
IEC 61094-5:2001
Frequency : 63 Hz to 125 Hz
Approved on 18 August 2009
Institute service identifier : SCL/1.1.1-009
AC voltage (up to the MHz range) , AC voltage up to 1100 V: meters : 0.1 V to 1000 V
AC voltmeter
Absolute expanded uncertainty : 3.0E-3 mV to 5.0E1 mV
{"row_1":{"col_1":"","col_2":"20 Hz","col_3":"40 Hz","col_4":"1 kHz","col_5":"10 kHz","col_6":"20 kHz","col_7":"30 kHz","col_8":"50 kHz","col_9":"100 kHz","col_10":"300 kHz","col_11":"500 kHz","col_12":"1 MHz"},"row_2":{"col_1":"100 mV","col_2":"0.003","col_3":"0.003","col_4":"0.003","col_5":"0.003","col_6":"0.003","col_7":"-","col_8":"0.005","col_9":"0.010","col_10":"-","col_11":"-","col_12":"-"},"row_3":{"col_1":"200 mV","col_2":"0.006","col_3":"0.006","col_4":"0.006","col_5":"0.006","col_6":"0.006","col_7":"-","col_8":"0.010","col_9":"0.020","col_10":"-","col_11":"-","col_12":"-"},"row_4":{"col_1":"0.5 V","col_2":"0.0075","col_3":"0.0075","col_4":"0.0075","col_5":"0.0075","col_6":"0.0075","col_7":"-","col_8":"0.0075","col_9":"0.010","col_10":"0.023","col_11":"0.033","col_12":"0.10"},"row_5":{"col_1":"1 V","col_2":"0.011","col_3":"0.011","col_4":"0.011","col_5":"0.011","col_6":"0.011","col_7":"-","col_8":"0.012","col_9":"0.015","col_10":"0.040","col_11":"0.050","col_12":"0.20"},"row_6":{"col_1":"2 V","col_2":"0.026","col_3":"0.026","col_4":"0.026","col_5":"0.026","col_6":"0.026","col_7":"-","col_8":"0.026","col_9":"0.030","col_10":"0.080","col_11":"0.10","col_12":"0.40"},"row_7":{"col_1":"5 V","col_2":"0.055","col_3":"0.055","col_4":"0.055","col_5":"0.055","col_6":"0.055","col_7":"-","col_8":"0.060","col_9":"0.075","col_10":"0.20","col_11":"0.25","col_12":"1.0"},"row_8":{"col_1":"10 V","col_2":"0.13","col_3":"0.13","col_4":"0.13","col_5":"0.13","col_6":"0.13","col_7":"-","col_8":"0.13","col_9":"0.15","col_10":"0.40","col_11":"0.50","col_12":"2.0"},"row_9":{"col_1":"20 V","col_2":"0.28","col_3":"0.28","col_4":"0.28","col_5":"0.28","col_6":"0.28","col_7":"-","col_8":"0.28","col_9":"0.30","col_10":"0.80","col_11":"1.0","col_12":"4.0"},"row_10":{"col_1":"50 V","col_2":"0.65","col_3":"0.65","col_4":"0.65","col_5":"0.65","col_6":"0.65","col_7":"-","col_8":"0.65","col_9":"1.0","col_10":"-","col_11":"-","col_12":"-"},"row_11":{"col_1":"100 V","col_2":"1.5","col_3":"1.5","col_4":"1.5","col_5":"1.5","col_6":"1.5","col_7":"1.5","col_8":"2.0","col_9":"3.0","col_10":"-","col_11":"-","col_12":"-"},"row_12":{"col_1":"200 V","col_2":"3.2","col_3":"3.2","col_4":"3.2","col_5":"3.2","col_6":"4.0","col_7":"4.0","col_8":"5.0","col_9":"9.0","col_10":"-","col_11":"-","col_12":"-"},"row_13":{"col_1":"500 V","col_2":"9.0","col_3":"9.0","col_4":"9.0","col_5":"9.0","col_6":"13","col_7":"15","col_8":"20","col_9":"50","col_10":"-","col_11":"-","col_12":"-"},"row_14":{"col_1":"700 V","col_2":"-","col_3":"14","col_4":"14","col_5":"14","col_6":"21","col_7":"28","col_8":"35","col_9":"-","col_10":"-","col_11":"-","col_12":"-"},"row_15":{"col_1":"1000 V","col_2":"-","col_3":"20","col_4":"15","col_5":"20","col_6":"30","col_7":"40","col_8":"-","col_9":"-","col_10":"-","col_11":"-","col_12":"-"}}
The expanded uncertainty given in this table are expressed in mV
Comparison with AC reference standard
Frequency : 20 Hz to 1 MHz
Approved on 10 November 2014
Institute service identifier : SCL/5.2.2a
DC resistance , DC resistance standards and sources: multiple ranges : 1 Ω to 1.00E8 Ω
Multifunction calibrator
Absolute expanded uncertainty : 3.0E-5 Ω to 3.0E3 Ω
{"row_1":{"col_1":"","col_2":"Expanded uncertainty / Ω","col_3":"Instrument type or method","col_4":"******** Standard ********","col_5":"Specifications"},"row_2":{"col_1":"0.1 Ω","col_2":"9.40E-08","col_3":"DCC bridge","col_4":"Reference resistors","col_5":"100 mA"},"row_3":{"col_1":"0.1 Ω to 1 Ω","col_2":"1.4E-07 to 1.4E-06","col_3":"DCC bridge","col_4":"Reference resistors","col_5":"10 mW"},"row_4":{"col_1":"1 Ω","col_2":"3E-07","col_3":"DCC bridge","col_4":"QHRS","col_5":"10 mW"},"row_5":{"col_1":"10 Ω","col_2":"3E-06","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_6":{"col_1":"100 Ω","col_2":"3E-05","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_7":{"col_1":"1 kΩ","col_2":"3E-04","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_8":{"col_1":"10 kΩ","col_2":"3E-03","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_9":{"col_1":"100 kΩ","col_2":"5E-02","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_10":{"col_1":"1 MΩ","col_2":"1","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"-"},"row_11":{"col_1":"1 Ω to 10 Ω","col_2":"4.6E-07 to 4.6E-06","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_12":{"col_1":"10 Ω to 100 Ω","col_2":"4.2E-06 to 4.2E-05","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_13":{"col_1":"100 Ω to 1000 Ω","col_2":"4.6E-05 to 4.6E-04","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_14":{"col_1":"0.001 MΩ to 1 MΩ","col_2":"6.8E-03 to 6.8 ","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"-"},"row_15":{"col_1":"10 MΩ","col_2":"10","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_16":{"col_1":"100 MΩ","col_2":"500","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_17":{"col_1":"1 MΩ to 10 MΩ","col_2":"6.8 to 68","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_18":{"col_1":"10 MΩ to 100 MΩ","col_2":"68 to 680","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_19":{"col_1":"0.1 GΩ to 10 GΩ","col_2":"4.6E+03 to 4.6E+05","col_3":"Modified Wheatstone bridge","col_4":"Reference resistor","col_5":"1000 V"},"row_20":{"col_1":"10 GΩ to 100 GΩ","col_2":"7.8E+05 to 7.8E+06","col_3":"Modified Wheatstone bridge","col_4":"Reference resistor","col_5":"1000 V"},"row_21":{"col_1":"100 GΩ to 1000 GΩ","col_2":"5.7E+07 to 5.7E+08","col_3":"Modified Wheatstone bridge","col_4":"Reference resistor","col_5":"1000 V"},"row_22":{"col_1":"1 mΩ","col_2":"3.1E-09","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"100 A"},"row_23":{"col_1":"10 mΩ","col_2":"1.9E-08","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"30 A"},"row_24":{"col_1":"100 mΩ","col_2":"1.5E-07","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"10 A"},"row_25":{"col_1":"0.1 mΩ to 1 mΩ","col_2":"3.9E-10 to 3.9E-09","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"100 A"},"row_26":{"col_1":"1 mΩ to 10 mΩ","col_2":"3.9E-09 to 1.9E-08","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"100 A at 1 mW to 30 A at 10 mW"},"row_27":{"col_1":"10 mΩ to 100 mΩ","col_2":"1.9E-08 to 1.5E-07","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"30 A at 10 mW to 10 A at 100 mW"},"row_28":{"col_1":"0.1 Ω to 1 Ω","col_2":"1.5E-07 to 1.4E-06","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"10 A at 0.1 W to 1 A at 1 W"},"row_29":{"col_1":"1 Ω","col_2":"3E-05","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_30":{"col_1":"10 Ω","col_2":"5E-05 ","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_31":{"col_1":"100 Ω","col_2":"5E-04 ","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_32":{"col_1":"1 kΩ","col_2":"1E-03","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_33":{"col_1":"10 kΩ","col_2":"3E-02","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_34":{"col_1":"100 kΩ","col_2":"3E-01","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_35":{"col_1":"1 MΩ","col_2":"3","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_36":{"col_1":"10 MΩ","col_2":"30","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_37":{"col_1":"100 MΩ","col_2":"3000","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_38":{"col_1":"1 Ω to 10 Ω","col_2":"3E-05 to 5E-05","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_39":{"col_1":"10 Ω to 100 Ω","col_2":"5E-05 to 5E-04","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_40":{"col_1":"0.1 kΩ to 1.9 kΩ","col_2":"5E-04 to 3E-03","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_41":{"col_1":"1.9 kΩ to 190 kΩ","col_2":"3E-03 to 4E-01","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_42":{"col_1":"0.19 MΩ to 1 MΩ","col_2":"0.4 to 3 ","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_43":{"col_1":"1 MΩ to 10 MΩ","col_2":"3 to 30","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_44":{"col_1":"10 MΩ to 100 MΩ","col_2":"30 to 3000","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"}}
Digital multimeter
Approved on 10 November 2014
Institute service identifier : SCL/2.1.5
Radio frequency measurements , Scalar RF reflection coefficient and attenuation: attenuation in coaxials : 0 dB to 80 dB
Passive device, fixed and step attenuator
Absolute expanded uncertainty : 3.9E-2 dB to 7.1 dB
{"row_1":{"col_1":"","col_2":"Frequency","col_3":"Expanded uncertainty / dB"},"row_2":{"col_1":"0 dB to 20 dB","col_2":"0.3 MHz to 18 GHz","col_3":"(0.039 + 0.0028<I>A</I>), <I>A</I> in dB"},"row_3":{"col_1":"20 dB to 40 dB","col_2":"300 kHz","col_3":"(0.0049<I>A</I> - 0.055), <I>A</I> in dB"},"row_4":{"col_1":"40 dB to 60 dB","col_2":"1 MHz","col_3":"(0.026<I>A</I> - 0.955), <I>A</I> in dB"},"row_5":{"col_1":"60 dB to 80 dB","col_2":"10 MHz","col_3":"(0.33<I>A</I> - 19.3), <I>A</I> in dB"}}
Network analyser
Frequency : 0.3 MHz to 18 GHz
Connector type : 50 Ω, type-N and PC7
Approved on 10 November 2014
Institute service identifier : SCL/11.2.3b
Radio frequency measurements , Radio frequency voltage and current: RF voltage meters : 7.10E-4 V to 2.2 V
RF voltmeter
Relative expanded uncertainty : 1.5E1 mV/V to 3.6E1 mV/V
{"row_1":{"col_1":"","col_2":"10 kHz ","col_3":"300 kHz ","col_4":"1 MHz ","col_5":"10 MHz ","col_6":"30 MHz","col_7":"50 MHz ","col_8":"100 MHz","col_9":"300 MHz","col_10":"600 MHz","col_11":"1 GHz","col_12":"10 kHz to 1 GHz"},"row_2":{"col_1":"0.71 V","col_2":"16","col_3":"16","col_4":"22","col_5":"17","col_6":"16","col_7":"15","col_8":"16","col_9":"16","col_10":"16","col_11":"16","col_12":"23"},"row_3":{"col_1":"0.71 mV to 2.2 V","col_2":"33","col_3":"33","col_4":"36","col_5":"33","col_6":"32","col_7":"28","col_8":"32","col_9":"32","col_10":"32","col_11":"32","col_12":"36"}}
The expanded uncertainty given in this table are expressed in mV/V
Power meter with sensors
Frequency : 0.01 MHz to 1 GHz
Impedance : 50 Ω
Approved on 10 November 2014
Institute service identifier : SCL/11.7.3a
DC voltage (up to 1100 V) , DC voltage meters: intermediate values : 1.00E-3 V to 1000 V
DC voltmeter, multimeter, multifunction transfer standard
Absolute expanded uncertainty : 0.12 µV to 1.2E3 µV
{"row_1":{"col_1":"","col_2":"Expanded uncertainty / (µV)"},"row_2":{"col_1":"1 mV to 20 mV","col_2":"0.12"},"row_3":{"col_1":"20 mV to 200 mV","col_2":"0.24"},"row_4":{"col_1":"0.2 V to 2 V","col_2":"0.3 to 3"},"row_5":{"col_1":"2 V to 1000 V","col_2":"3 to 1200"}}
Comparison with standard via DCC potentiometer or resistive divider
Approved on 10 November 2014
Institute service identifier : SCL/1.2.2
Radio frequency measurements , Signal and pulse characteristics: pulse time parameters : 5.00E-10 s to 5 s
Oscilloscope
Absolute expanded uncertainty
0.0006T

T in s

The uncertainty is expressed in s

Oscilloscope calibrator
Waveform : triangular pulse
Pulse amplitude : 0.1 V to 1 V
Approved on 10 November 2014
Institute service identifier : SCL/11.6.2a
DC current (up to 100 A) , DC current sources: low values : 0.1 µA to 100 µA
Current generator, multifunction calibrator
Absolute expanded uncertainty : 0.89 pA to 9.0E1 pA
{"row_1":{"col_1":"","col_2":"Expanded uncertainty / (pA)"},"row_2":{"col_1":"0.1 µA to 1 µA","col_2":"0.89 to 3.2"},"row_3":{"col_1":"1 µA to 10 µA","col_2":"2.2 to 9.8"},"row_4":{"col_1":"10 µA to 100 µA","col_2":"18 to 90"}}
Volt drop across shunt
Approved on 10 November 2014
Institute service identifier : SCL/3.1.1
Radio frequency measurements , Signal and pulse characteristics: pulse amplitude : 40 µV to 4.00E7 µV
Oscilloscope
Absolute expanded uncertainty
3 + 0.0032a

a in µV

The uncertainty is expressed in µV

Oscilloscope calibrator
Waveform : square wave
Frequency : 1 kHz
Approved on 10 November 2014
Institute service identifier : SCL/11.6.1
Items for defining ITS-90 , Temperature : 660.323 °C
SPRT
Absolute expanded uncertainty : 6 mK
Aluminum freezing point cell
Modified on 09 February 2015
Approved on 05 June 2014
Institute service identifier : SCL/1.3.2.008
Force , Force: compression, tension : 60 kN to 600 kN
Force measuring device
Relative expanded uncertainty : 2.0E-2 %
Direct comparison with generated force
Calibration service in either compression or tension can also be performed
Approved on 21 July 2008
Institute service identifier : SCL/18
Pressure , Gauge pressure: gas medium : 3.5 kPa to 7000 kPa
Pressure measuring device, pressure gauge, pressure balance: P
Absolute expanded uncertainty
3.5E-05P

P in kPa

The uncertainty is expressed in kPa

Direct comparison with standard, crossfloat
Approved on 21 July 2008
Institute service identifier : SCL/12
Torque , Torque : 0.5 N m to 1000 N m
Torque measuring device: T
Absolute expanded uncertainty
1E-03T

T in Nm

The uncertainty is expressed in N m

Direct comparison with lever-mass system
Approved on 21 July 2008
Institute service identifier : SCL/22
Torque , Torque : 0.1 N m to 0.5 N m
Torque measuring device: T
Absolute expanded uncertainty
1E-03T

T in Nm

The uncertainty is expressed in N m

Direct comparison with lever-mass system
Approved on 21 July 2008
Institute service identifier : SCL/21
Time interval , Time interval : 1 ms to 1000 ms
Period source
Relative expanded uncertainty : 3.0E-9 to 4.0E-6
Derived from direct frequency measurement using calibrated counter
Gate time : 120 s to 1000 s
Number of measurements : 5 to 10
Amplitude : 0.3 V to 2.5 V (peak-to-peak into 50 ohm)
Ideal DUT effect included
Approved on 31 August 2005
Institute service identifier : SCL/16
Time interval , Time interval : 38 ps to 100 ps
Period meter
Relative expanded uncertainty : 1.0E-10 to 2.0E-10
Measuring test signals from calibrated period source
Gate time : 1 s
Number of measurements : 5 to 10
Amplitude : 0.01 mW to 3 mW (power into 50 ohm)
Ideal DUT effect included
Approved on 31 August 2005
Institute service identifier : SCL/27
DC resistance , DC resistance standards and sources: high values : 1.00E-3 GΩ to 1000 GΩ
Fixed resistor, resistance box
Absolute expanded uncertainty : 6.8 Ω to 5.7E8 Ω
{"row_1":{"col_1":"","col_2":"Expanded uncertainty / Ω","col_3":"Instrument type or method","col_4":"******** Standard ********","col_5":"Specifications"},"row_2":{"col_1":"0.1 Ω","col_2":"9.40E-08","col_3":"DCC bridge","col_4":"Reference resistors","col_5":"100 mA"},"row_3":{"col_1":"0.1 Ω to 1 Ω","col_2":"1.4E-07 to 1.4E-06","col_3":"DCC bridge","col_4":"Reference resistors","col_5":"10 mW"},"row_4":{"col_1":"1 Ω","col_2":"3E-07","col_3":"DCC bridge","col_4":"QHRS","col_5":"10 mW"},"row_5":{"col_1":"10 Ω","col_2":"3E-06","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_6":{"col_1":"100 Ω","col_2":"3E-05","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_7":{"col_1":"1 kΩ","col_2":"3E-04","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_8":{"col_1":"10 kΩ","col_2":"3E-03","col_3":"DCC bridge","col_4":"QHRS","col_5":"-"},"row_9":{"col_1":"100 kΩ","col_2":"5E-02","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_10":{"col_1":"1 MΩ","col_2":"1","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"-"},"row_11":{"col_1":"1 Ω to 10 Ω","col_2":"4.6E-07 to 4.6E-06","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_12":{"col_1":"10 Ω to 100 Ω","col_2":"4.2E-06 to 4.2E-05","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_13":{"col_1":"100 Ω to 1000 Ω","col_2":"4.6E-05 to 4.6E-04","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"-"},"row_14":{"col_1":"0.001 MΩ to 1 MΩ","col_2":"6.8E-03 to 6.8 ","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"-"},"row_15":{"col_1":"10 MΩ","col_2":"10","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_16":{"col_1":"100 MΩ","col_2":"500","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_17":{"col_1":"1 MΩ to 10 MΩ","col_2":"6.8 to 68","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_18":{"col_1":"10 MΩ to 100 MΩ","col_2":"68 to 680","col_3":"Kelvin ratio bridge","col_4":"Reference resistor","col_5":"100 V"},"row_19":{"col_1":"0.1 GΩ to 10 GΩ","col_2":"4.6E+03 to 4.6E+05","col_3":"Modified Wheatstone bridge","col_4":"Reference resistor","col_5":"1000 V"},"row_20":{"col_1":"10 GΩ to 100 GΩ","col_2":"7.8E+05 to 7.8E+06","col_3":"Modified Wheatstone bridge","col_4":"Reference resistor","col_5":"1000 V"},"row_21":{"col_1":"100 GΩ to 1000 GΩ","col_2":"5.7E+07 to 5.7E+08","col_3":"Modified Wheatstone bridge","col_4":"Reference resistor","col_5":"1000 V"},"row_22":{"col_1":"1 mΩ","col_2":"3.1E-09","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"100 A"},"row_23":{"col_1":"10 mΩ","col_2":"1.9E-08","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"30 A"},"row_24":{"col_1":"100 mΩ","col_2":"1.5E-07","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"10 A"},"row_25":{"col_1":"0.1 mΩ to 1 mΩ","col_2":"3.9E-10 to 3.9E-09","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"100 A"},"row_26":{"col_1":"1 mΩ to 10 mΩ","col_2":"3.9E-09 to 1.9E-08","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"100 A at 1 mW to 30 A at 10 mW"},"row_27":{"col_1":"10 mΩ to 100 mΩ","col_2":"1.9E-08 to 1.5E-07","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"30 A at 10 mW to 10 A at 100 mW"},"row_28":{"col_1":"0.1 Ω to 1 Ω","col_2":"1.5E-07 to 1.4E-06","col_3":"DCC bridge","col_4":"Reference resistor","col_5":"10 A at 0.1 W to 1 A at 1 W"},"row_29":{"col_1":"1 Ω","col_2":"3E-05","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_30":{"col_1":"10 Ω","col_2":"5E-05 ","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_31":{"col_1":"100 Ω","col_2":"5E-04 ","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_32":{"col_1":"1 kΩ","col_2":"1E-03","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_33":{"col_1":"10 kΩ","col_2":"3E-02","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_34":{"col_1":"100 kΩ","col_2":"3E-01","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_35":{"col_1":"1 MΩ","col_2":"3","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_36":{"col_1":"10 MΩ","col_2":"30","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_37":{"col_1":"100 MΩ","col_2":"3000","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_38":{"col_1":"1 Ω to 10 Ω","col_2":"3E-05 to 5E-05","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_39":{"col_1":"10 Ω to 100 Ω","col_2":"5E-05 to 5E-04","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_40":{"col_1":"0.1 kΩ to 1.9 kΩ","col_2":"5E-04 to 3E-03","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_41":{"col_1":"1.9 kΩ to 190 kΩ","col_2":"3E-03 to 4E-01","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_42":{"col_1":"0.19 MΩ to 1 MΩ","col_2":"0.4 to 3 ","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_43":{"col_1":"1 MΩ to 10 MΩ","col_2":"3 to 30","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"},"row_44":{"col_1":"10 MΩ to 100 MΩ","col_2":"30 to 3000","col_3":"Digital multimeter","col_4":"Standard resistors","col_5":"-"}}
Kelvin ratio bridge or Modified Wheatstone bridge
Maximum voltage : 1000 V
Approved on 10 November 2014
Institute service identifier : SCL/2.1.3
DC voltage (up to 1100 V) , DC voltage meters: very low values : 0.1 mV to 1 mV
Nano-voltmeter, micro-voltmeter
Absolute expanded uncertainty : 0.12 µV
Comparison with standard via DCC potentiometer
Approved on 10 November 2014
Institute service identifier : SCL/1.2.1

Select Metrology Area

General physics
Acoustics, Ultrasound, Vibration

This metrology area covers the fields of acoustics, ultrasound and vibration.

Electricity and Magnetism

This metrology area covers the fields of DC and AC measurements, impedance, electric and magnetic fields, radiofrequencies and measurements on materials.

Length

This metrology area covers the fields of laser frequencies and dimensional metrology.

Mass and related quantities

This metrology area covers the fields of mass standards, force, pressure, density, hardness, torque, gravity and viscosity.

Chemistry and Biology
Chemistry and Biology

This metrology area covers all fields relevant to chemistry and biology.

Ionizing radiation
Ionizing Radiation

This metrology area covers the fields of dosimetry, radioactivity and neutron measurements.