Electrical/Electronic
ORNL Metrology Laboratory (ORNLML) maintains a variety of electrical standards traceable to SI through the National Institute of Standards and Technology (NIST) and other international primary laboratories. These standards generate and measure various electrical properties required to perform traceable calibrations of our customers’ instruments and equipment. ORNLML can provide accredited calibrations for any electrical parameter within the ranges detailed in our Scope of Accreditation. However, traceable non-accredited calibrations are available for electrical parameters outside of our Scope of Accreditation. The tables below list our accredited capabilities. Our entire Scope of Accreditation can be found at the following link.
Typical types of equipment the ORNLML performs electrical calibrations on are: oscilloscopes, multimeters from hand held 3.5 digit to laboratory 8.5 digit models, clamp type ammeters, resistors both fixed and decade, frequency counters and insulation testers.
If you have questions about our electrical capabilities, please contact the ORNL Metrology Laboratory for more information.
ORNL Metrology Laboratory Accredited Electrical Capabilities
AC Current
Range in A |
Best Uncertainty (+/-) in ANote 1
Frequency in Hz |
Remarks |
|
10 |
20 |
40 |
1k |
5k |
10k |
|
0.00022 |
1.16 E-06 |
1.16 E-06 |
5.78 E-07 |
3.05 E-07 |
4.19 E-07 |
4.19 E-07 |
Source/Measure |
0.0022 |
1.16 E-05 |
1.16 E-05 |
5.78 E-06 |
3.03 E-06 |
4.19 E-06 |
4.19 E-06 |
Source/Measure |
0.022 |
1.16 E-04 |
1.16 E-04 |
5.78 E-05 |
3.02 E-05 |
4.13 E-05 |
4.13 E-05 |
Source/Measure |
0.22 |
1.16 E-03 |
1.16 E-03 |
6.01 E-04 |
4.63 E-04 |
9.37 E-04 |
9.37 E-04 |
Source/Measure |
2.2 |
|
1.16 E-03 |
1.39 E-03 |
1.39 E-03 |
9.43 E-03 |
9.43 E-03 |
Source/Measure |
11 |
|
|
2.91 E-02 |
2.95 E-02 |
3.59 E-02 |
3.67 E-02 |
Source/Measure |
2 Wire Resistance
Range in Ω |
Best Uncertainty (+/-) in Ω Note 1 |
Remarks |
0 |
2.89 E-01 |
Source/Measure |
1 |
2.89 E-01 |
Source/Measure |
1.9 |
2.89 E-01 |
Source/Measure |
10 |
2.89 E-01 |
Source/Measure |
19 |
2.90 E-01 |
Source/Measure |
100 |
2.91 E-01 |
Source/Measure |
190 |
2.92 E-01 |
Source/Measure |
1 k |
3.01 E-01 |
Source/Measure |
1.9 k |
3.19 E-01 |
Source/Measure |
10 k |
4.18 E-01 |
Source/Measure |
19 k |
5.89 E-01 |
Source/Measure |
100 k |
1.63 E +00 |
Source/Measure |
190 k |
6.04 E +00 |
Source/Measure |
1 M |
2.31 E + 01 |
Source/Measure |
1.9 M |
2.27 E +02 |
Source/Measure |
10 M |
7.31 E +02 |
Source/Measure |
19 M |
1.21 E + 04 |
Source/Measure |
100 M |
5.92 E + 04 |
Source/Measure |
4 Wire Resistance
Range in Ω |
Best Uncertainty (+/-) in Ω Note 1 |
Remarks |
0 |
6.56 E-05 |
Source/Measure |
1 |
9.59 E-05 |
Source/Measure |
1.9 |
1.40 E-04 |
Source/Measure |
10 |
2.69 E-04 |
Source/Measure |
19 |
9.39 E-04 |
Source/Measure |
100 |
2.11 E-03 |
Source/Measure |
190 |
3.11 E-03 |
Source/Measure |
1 k |
1.31 E-02 |
Source/Measure |
1.9 k |
3.10 E-02 |
Source/Measure |
10 k |
1.31 E-01 |
Source/Measure |
19 k |
2.96 E-01 |
Source/Measure |
100 k |
1.37 E +00 |
Source/Measure |
190 k |
5.76 E +00 |
Source/Measure |
1 M |
2.28 E + 01 |
Source/Measure |
1.9 M |
2.27 E +02 |
Source/Measure |
10 M |
7.31 E +02 |
Source/Measure |
19 M |
1.21 E + 04 |
Source/Measure |
DC Voltage
Range in V |
Best Uncertainty (+/-) in V Note 1 |
Remarks |
0 |
9.33 E-07 |
Source/Measure |
0.22 |
3.27 E-06 |
Source/Measure |
2.2 |
2.20 E-05 |
Source/Measure |
11 |
1.52 E-04 |
Source/Measure |
22 |
2.92 E-04 |
Source/Measure |
220 |
2.73 E-03 |
Source/Measure |
1100 |
1.26 E-02 |
Source/Measure |
DC Voltage Fixed Points
Range in V |
Best Uncertainty (+/-) in V Note 1 |
Remarks |
0.1 |
1.22 E-06 |
Source/Measure |
1 |
3.65 E-06 |
Source/Measure |
10 |
2.46 E-05 |
Source/Measure |
100 |
3.33 E-04 |
Source/Measure |
1000 |
4.16 E-04 |
Source/Measure |
DC Current
Range in A |
Best Uncertainty (+/-) in A Note 1 |
Remarks |
0 |
3.47 E-09 |
Source/Measure |
0.00022 |
1.38 E-08 |
Source/Measure |
0.0022 |
1.14 E-07 |
Source/Measure |
0.022 |
1.45 E-06 |
Source/Measure |
0.22 |
3.75 E-05 |
Source/Measure |
2.2 |
2.74 E-03 |
Source/Measure |
11 |
4.89 E-03 |
Source/Measure |
LF AC Voltage
Range |
Best Uncertainty (+/-) in % + μVNote 1
Frequency in Hz |
|
10 to 20 |
20 to 40 |
40 to 20k |
20k to
50 k |
50k to 100k |
100k to 300k |
300k to 500k |
500k to 1 M |
2.2 mV |
0.209 +4 |
0.209 +4 |
0.18 +4 |
0.808 + 4 |
1.697 + 5 |
1.680 +10 |
1.680+10 |
1.683 +20 |
22 mV |
0.036 +4 |
0.036 +4 |
0.047 +4 |
0.047 +4 |
0.105 +4 |
0.406 +5 |
1.214 +10 |
1.215 +20 |
220 mV |
0.0.34+12 |
0.032 +7 |
0.032 +7 |
0.047 +7 |
0.105 +7 |
0.405 +17 |
1.214 +20 |
1.215 +25 |
2.2 V |
0.034+40 |
0.032 +15 |
0.032 +15 |
0.046 +8 |
0.104 +10 |
0.404 +30 |
1.213 +80 |
1.214 +200 |
22 V |
0.048 +400 |
0.047 +150 |
0.047 +150 |
0.052 +50 |
0.150 +100 |
0.150 +200 |
1.790 +600 |
1.791 +2000 |
Range |
Best Uncertainty (+/-) in % + mVNote 1
Frequency in Hz |
|
10 to 20 |
20 to 40 |
40 to 20k |
20k to 50 k |
50k to 100k |
100k to 300k |
300k to 500k |
500k to 1 M |
220 V |
0.071 +4 |
0.070 +1.5 |
0.070 +1.5 |
0.150 +0.6 |
0.358 +1 |
0.358 +2.5 |
1.749 +16 |
1.777 +40 |
1100 V |
0.067 +16 |
0.053 +4 |
0.053 +3.5 |
|
|
|
|
|
Frequency Dissemination
Range in Hz |
Best Uncertainty (+/-) (Fractional Frequency Error) Note 1 |
Remarks |
10 M |
1.07 x 10-11 |
Source/Measure |
Note 1 Represents an expanded uncertainty using a coverage factor, k=2, at an approximate level of confidence of 95%.
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