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TABLE 4-1
Equipment Required to Inspect and Calibrate
Instrument Manufacturer
Nomenclature Specifications Use and Model No.
Precision Calibrator DC Volt ±0.002% Calibration Source Rotek Model 5000
AC Volt ±0.02%
Voltage Divider 7 Place Kelvin Voltage Attenuator Fluke Model 720A
Varley Divider
DC Meter Most Sensitive Scale: Null Detector Keithley Model 155
±1µV, Accuracy 2%
Distortion Meter Voltage Range 1-300V Distortion Hewlett-Packard
Distortion Range: Measurement Model 339A
0.02%-100%,
50Hz-60kHz
AC-DC Volt 0.5-1000 Volts AC Voltage Fluke Model 540B
Transfer Standard 0.005% Accuracy Measurement
AC Voltmeter RMS Differential AC Voltage Fluke Model 931B
Voltmeter 10mV Measurement to 1000V Calibrate at each test
setting ±0.01%
Oscilloscope AC and DC 5mV Observe Waveforms Hitachi 1050 Series
Sensitivity
Standard Watt 120-240V; .1-100A Watt and Current Rotek Model MSB-001A
Converter 0.005% Accuracy Measurement
Resistor, 900 Ohm 50W, 5% Load in Distortion
Measurement
Resistor, 3.6 kOhm 50W, 5% Load in Distortion
Measurement
Resistor, 0.1 Ohm 50W, Wirewound Shunt in Current Distortion
Measurement
Resistor, 2 Ohm 10W 10% Compliance Adjustment
Digital Multimeter 0-10 VDC ±0.001% Voltage Measurement Solartron Model 7071
with null zero
feature; 6-½ digits
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