TB 9-6625-159-24
Table 1. Calibration Description - Continued.
Test instrument
Performance specifications
parameters
Model 380973
Ac current
Range:
0 to 600 A @ 40 to 450 Hz
Accuracy: (2.0% rdg + 5 dgts)
Peak current Range:
0 to 600 A @ 50 to 60 Hz
Accuracy: (2.0% rdg + 10 dgts)
Ac voltage
Range:
0 to 600 V ac; 40 to 450 Hz
Accuracy: (1.2% rdg + 5 dgts)
Peak voltage
Range:
0 to 600 V ac; 50 to 60 Hz
Accuracy: (1.5% rdg +10 dgts)
Dc voltage
Range:
0 to 600 V dc
Accuracy: (0.75% rdg + 2 dgts)
0 to 4 kΩ
Range:
Accuracy: (1.0% rdg + 5 dgts)
Range:
0 to 999.9 kHz
Accuracy: (0.5% rdg + 2 dgts)
Sensitivity: Ac current, 5 A ac; Ac voltage, 1 V ac
Temperature
Range:
-20 to 1200 C; -4 to 2192 F
Range:
-20 to 300 C
Accuracy: (2.0% rdg + 3 C)
Range:
300 to 1200 C
Accuracy: (3.5% rdg + 2.0 C)
Range:
-4 to 2192 F
Accuracy: (3.0% rdg + 8.0 F)
Range:
0 to 2000 F
Accuracy: (3.0% rdg + 5 dgts)
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286; AN/GSM-287; or AN/GSM-440. Alternate items may be used
by the calibrating activity. The items selected must be verified to perform satisfactorily
prior to use and must bear evidence of current calibration. The equipment must meet or
provide a four-to-one ratio between the standard and TI. Where the four-to-one ratio
cannot be met, the actual accuracy of the equipment selected is shown in parentheses.
5. Accessories Required. The accessories required for this calibration are common
usage accessories issued as indicated in 4 above, and are not listed in this calibration
procedure. The following peculiar accessory is also required for this calibration: Fluke,
Model 5500A/Coil or a locally manufactured substitute.
