TB 9-6625-174-24
APPENDIX B
PERFORMANCE TABLES
Extech, Model 38389
Table B-53. Calibration Description.
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 600 V dc
Accuracy: 400.0 mV range, (0.5% rdg + 5 dgts); 4.000 through 400.0 V ranges,
(1.2% rdg + 3 dgts); 600 V range, (1.5% rdg + 3 dgts)
AC VOLTAGE
Range: 0 to 600 V ac, 50 to 60 Hz
Accuracy: 4.000 V range, (1.0% rdg + 5 dgts); 40.00 and 400.0 V ranges,
(1.5% rdg + 3 dgts); 600 V range, (2.0% rdg + 4 dgts)
DC CURRENT
Range: 0 to 600 A dc
Accuracy: 400.0 A range: 0 to 70 A, (2.5% rdg + 0.6 A); 70 to 300 A, (3.0%
rdg + 0.3 A); 300 to 400 A, (3.5% rdg + 0.3 A)
600 A range: 0 to 150 A, (2.5% rdg + 4 A); 151 to 350 A,
(3.0% rdg + 4 A); 351 to 600 A, (4.0% rdg + 6 A)
AC CURRENT
Range: 0 to 600 A ac, 50 to 60 Hz
Accuracy: 400.0 A range: 0 to 70 A, (3.0% rdg + 0.6 A); 70 to 300 A, (3.5%
rdg + 0.3 A); 300 to 400 A, (3.5% rdg + 0.6 A)
600 A range: 0 to 150 A, (3.0% rdg + 4 A); 151 to 350 A,
(3.5% rdg + 5 A); 351 to 600 A, (4.0% rdg + 8 A)
Range: 0 to 40 MΩ
Accuracy: 400.0 Ω range, (1.0% rdg + 4 dgts); 4.000 kΩ thru 400.0 kΩ ranges,
(1.5% rdg + 2 dgts); 4.000 MΩ range, (2.0% rdg + 3 dgts);
40.00 MΩ range, (3.0% rdg + 5 dgts)
Range: 0 to 100 μF
Accuracy: 40.00 nF range, (5.0% + 7 dgts); 400.0 nF thru 40.0 μF ranges,
(3.5% + 5 dgts); 100.0 μF range, (5.0% rdg + 5 dgts)
TEMPERATURE
Range: -4 to 1400 F, -20 to 760 C
Accuracy: F, (3.0% rdg + 5 F); C, (3.0% rdg + 3 C)
Table B-54. DC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V dc)
(V dc)
(V dc)
Min
Max
360 m
400 m
357.7
362.3
3.6
4
3.554
3.646
36
40
35.54
36.46
360
400
354.4
364.6
540
600
529
551
B-15
