Fluke 374 - Calibration Adjustment; Required Equipment

374/375/376
Calibration Manual
10
Table 2. Performance Tests (cont.)
Meter Reading Limit
Test
(Switch
Position)
Calibrator
Output
374 375 376
Low High
0.2 A @ 50 Hz X X X 9.7 A 10.3 A
10 A @ 50 Hz X X X 495.0 A 505.0 A
18 A @ 5 0Hz - - X 891.0 A 909.0 A
?
AC Amps
(with 50-
turn Coil)
6 A @ 440 Hz X X X 296.0 A 304.0 A
0.2 A X X X 9.7 A 10.3 A
10 A X X X 495.0 A 505.0 A

DC Amps
(with 50-
turn Coil)
18 A - - X 891.0 A 909.0 A
3 mV @ 50 Hz X X X 98.2 A 101.8 A
30 mV @ 50 Hz X X X 982 A 1018 A
60 mV @ 50 Hz X X X 1967 A 2033 A
75 mV @ 50 Hz X X X 2460 A 2540 A

iFlex
Current
Probe
(with
Simulation)
750 mV @ 500 Hz X X X 2460 A 2540 A
0.2 A @ 50 Hz X X X 9.6 A 10.4 A
10 A @ 50 Hz X X X 493.0 A 507.0 A
18 A @ 50 Hz X X X 887.0 A 913.0 A

iFlex
Current
Probe
(with 50-
turn Coil)
6 A @ 440 Hz X X X 295.2 A 304.8 A
Calibration Adjustment
Required Equipment
The equipment listed in Table 3 is required for calibration adjustment.
Table 3. Required Equipment
Equipment Required Characteristics Recommended Model
Calibrator 4.5-digit resolution Fluke 55xxA Calibrator
Wired coil 50 turns 5500A/COIL
Test Lead for iFlex PN 666602
Test Lead for other PN 2070140
Power Supply +3.0 V Common power supply or a 2 x
AA or AAA battery container