PAO Accredited Laboratories (as of Dec. 2012) - DTI

Products/
Class of Test
Measured
quantities/
instrument
Range to be calibrated
275 of 391
Best
measurement
capability
expressed as an
uncertainty ()*
Standard Method/
Reference
Standard
0 to 100 mV @ 50 kHz 0.043 mV
100 mV to 1 V @ 1 kHz 0.000 10 V On-Site Calibration
100 mV to 1 V @ 50 kHz 0.000 11 V for DC voltmeters
1 V to 10 V @ 10 Hz 0.000 90 V and ohmmeters only
1 V to 10 V @ 50 kHz 0.001 6 V
10 V to 100 V @ 1 kHz 0.011 V
10 V to 100 V @ 50 kHz 0.017 V
100 V to 750 V @ 1 kHz 0.097 V
.03 DC ammeters DC Ammeters 0 to 10 mA 0.000 68 mA
10 mA to 100 mA 0.009 4 mA
100 mA to 1 A 0.000 14 A
1 A to 3 A 0.000 42 A
.04 AC ammeters AC Ammeters 0 to 1 A 0.000 55 A
1 to 3 A 0.001 A
.09 Ohmmeters Resistance 0 to 100 Ω 0.001 8 Ω
100 Ω to 1 kΩ 0.000 015 kΩ
1 kΩ to 10 kΩ 0.000 15 kΩ
10 kΩ to 100 kΩ 0.001 8 kΩ
100 kΩ to 1 MΩ 0.000 03 MΩ
1 MΩ to 10 MΩ 0.000 62 MΩ
10 MΩ to 100 MΩ 0.019 MΩ
5.37 Frequency and Time Measuring Instruments and Standards
.01 Frequency
Meters
Frequency Meters 0 to 100 mV @ 10 mV
100 Hz
100 mV to 1 V @ 1 V
100 kHz
5.42 High Voltage Equipment
.01 Direct Voltage
Test
DC Voltage 0 to 5 kV
.02 Alternating
Voltage Test
0.002 Hz
0.002 kHz
0.021 kV
Non-Std. Method
CD-WI-026
Non-Std. Method
CD-WI-032
On-Site Calibration
AC Voltage 0 to 5 kV 0.021 kV Non-Std. Method
Cut-Off Current 0 to 10 mA 0.061 mA
5.45 Calibration of ancillary temperature measuring instruments
.04 Indicators, Thermocouples - 250 to 1 700 °C
recorders and type K, J, T, E, R
controllers RTD type Pt100
(385)
- 200 to 400 °C
0.31 °C
0.17 °C
CD-WI-032
On-Site Calibration
Non-Std. Method
CD-WI-005
On-Site Calibration
* A reported uncertainty will be that for the instrument itself during calibration plus the appropriate
measurement capability of the laboratory. The uncertainties are based on an estimated confidence
probability of approximate 95% unless otherwise stated.