NATA Electrical Accreditation

NATA Pressure Accreditation

Facilities: Public Testing

3.02 Resistors, resistance boxes and potential dividers

.01 Precision resistors, resistance boxes and conductance boxes with least uncertainties of measurement of:

• 0.003% from 0.1 to 100 W

• 0.002% from 100 to 1 MW

• 0.009% from 1M to 10 MW

3.09 Instrument Calibrators

.01 DC Volts

• with least uncertainties of measurement of:

• 13 ppm up to 1V

• 11 ppm from 1 to 10V

• 14 ppm from 10 to 100V

• 22 ppm from 100 to 1000V

.02 AC Volts

• with least uncertainties of measurement of:

• 0.13% at 10mV from 10 Hz to 20 kHz

• 0.02% from 0.1V to 10V and 45 Hz to 20 kHz

• 0.1% at 1V from 20kHz to 500kHz

• 0.03% at 10V and 20 kHz to 100 kHz

• 0.033% from 10V to 100 V and 45Hz to 20 kHz

• 0.04% at 100V from 20 kHz to 50 kHz

• 0.12% at 100V from 50 kHz to 100 kHz

• 0.07% from 100V to 1000V and 45 Hz to 1 kHz

.11 DC Current

• with least uncertainties of measurement of:

• 30 ppm from 100 mA to 10 mA

• 45 ppm from 10 mA to 100 mA

• 165 ppm from 100 mA to 1 A

.51 Resistance

• with least uncertainties of measurement of:

• As under class 3.02 where appropriate

3.10 Indicating and recording instruments 

• with least uncertainties of measurement of:

• Based on classes 3.02,3.09 where appropriate

• .01 DC Voltmeters

• .02 AC Voltmeters 

• .03 DC Ammeters

• .09 Ohmmeters

• .81 Graphic recording instruments

3.11 Frequency and time measuring instruments

.11 Counters

• With least uncertainties of measurement of:

• 0.01% of reading from 1 Hz to 10 MHz

.12 Time interval meters

• with least uncertainties of measurement of:

• 0.01% of reading from 100 ns to 1s

Facilities: Public Testing

1.41 Pressure and vacuum measuring devices

• Calibration of pneumatic devices in the range -100 kPa to -2 kPa and 2 kPa to 70 MPa

• with least uncertainties of measurement of:

• 0.0025% or 0.002 kPa (whichever is greater) from -100 kPa to -2 kPa and 2 kPa to 190 kPa 

• 0.0035% or 0.002 kPa (whichever is greater) from 200 kPa to 7 MPa

• Calibration of hydraulic devices in the range 100 kPa to 70 MPa

• With least uncertainties of measurement of:

• 0.011% or 0.08 kPa (whichever is greater)

.01 Pressure gauges

• Including test gauges as defined in AS 1349

.02 Vacuum gauges (Bourdon Tube)

• Including test gauges as defined in AS 1349 

.11 Pressure transducers

• Self indicating and electrical transducers with dc voltage, dc current or frequency output.

.12 Pressure Recorders