TB 9-6625-174-24
APPENDIX B
PERFORMANCE TABLES
Fluke, Model 373
Table B-47. Calibration Description.
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 600 V dc
Accuracy: (1.0% rdg + 5 dgts)
AC VOLTAGE
Range: 0 to 600 V ac
Accuracy: 48 to 62 Hz, (1.0% rdg + 5 dgts)
AC CURRENT
Range: 0 to 600 A ac
Accuracy: 48 to 62 Hz, (2.0% rdg + 5 dgts)
Range: 0 to 6000 Ω
Accuracy: (1.0% rdg + 5 dgts)
Range: 0 to 1000 μF
Accuracy: (1.9% rdg + 2 dgts)
Table B-48. DC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V dc)
(V dc)
(V dc)
Min
Max
180
Auto
177.7
182.3
420
Auto
415.3
424.7
540
Auto
534.1
545.9
-540
Auto
-545.9
-534.1
Table B-49. AC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V ac)
(V ac)
(V ac)
Min
Max
180 @ 50 Hz
Auto
177.7
182.3
180 @ 60 Hz
Auto
177.7
182.3
420 @ 50 Hz
Auto
415.3
424.7
420 @ 60 Hz
Auto
415.3
424.7
540 @ 50 Hz
Auto
534.1
545.9
540 @ 60 Hz
Auto
534.1
545.9
Table 50. B-AC Current (≤1000 A) (w/50-Turn Coil).
Calibrator output
Ammeter calibrator
Test instrument
Applied
Range
Range
Limits (A ac)
(V ac)
(A ac)
(A ac)
Min
Max
1.08 @ 50 Hz
20
Auto
528.7
551.3
1.08 @ 60 Hz
20
Auto
528.7
551.3
Table B-51. Resistance.
Calibrator output
Test instrument
Limits (%/Ω)
Applied
Range
(Ω)
(Ω)
Min
Max
190
Auto
-1.2632% (187.6)
+1.2632% (192.4)
1.9 k
Auto
-1.2632% (1876)
+1.2632% (1924)
B-13
