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The Fluke 374 True RMS Clamp Meter can read up to 600 V and 600 A in both AC and DC modes. Additionally, the 374 is compatible with the new iFlex flexible current probe (sold separately), which increases the measurement range to 2500 A AC and provides increased display flexibility, and improved wire access.

Specifications: Fluke 374 True RMS AC/DC Clamp Meter

Electrical Specifications
AC Current via Jaw
Range		374 and 375 376	600.0 A 999.9 A
Resolution			0.1 A
Accuracy			2% ± 5 digits (10-100 Hz) 2.5% ± 5 digits (100-500 Hz)
Crest Factor (50/60 Hz)			3 @ 500 A (375 and 376 only) 2.5 @ 600 A 1.42 @1000 A (376 only) Add 2% for C.F. > 2
AC Current via Flexible Current Probe
Range			2500 A
Resolution		374 and 375	0.1 A (≤ 600 A) 1 A (≤ 2500 A)
		376	0.1 A (≤ 999.9 A) 1 A (≤ 2500 A)
Accuracy			3% ±5 digits (5 – 500 Hz)
Crest Factor (50/60Hz)			3.0 at 1100 A (375 and 376 only) 2.5 at 1400 A 1.42 at 2500 A Add 2% for C.F. > 2
Distance from Optimum		i2500-10 Flex	i2500-18 Flex	Error
	A	0.5 in (12.7 mm)	1.4 in (35.6 mm)	± 0.5%
	B	0.8 in (20.3 mm)	2.0 in (50.8 mm)	± 1.0%
	C	1.4 in (35.6 mm)	2.5 in (63.5 mm)	± 2.0%
Measurement uncertainty assumes centralized primary conductor at optimum position, no external electrical or magnetic field, and within operating temperature range.
DC Current
Range		374 and 375 376	600.0 A 999.9 A
Resolution			0.1 A
Accuracy			2% ± 5 digits
AC Voltage
Range		374 and 375 376	600.0 V 1000 V
Resolution		374 and 375 376	0.1 V 0.1 V (≤ 600.0 V) 1 V (≤ 1000 V)
Accuracy			1.5% ± 5 digits (20 – 500 Hz)
DC Voltage
Range		374 and 375 376	600.0 V 1000 V
Resolution		374 and 375 376	0.1 V 0.1 V (≤ 600.0 V) 1 V (≤ 1000 V)
Accuracy			1% ± 5 digits
mV dc
Range		375 and 376	500.0 mV
Resolution			0.1 mV
Accuracy			1% ± 5 digits
Frequency via Jaw
Range		375 and 376	5.0 - 500.0 Hz
Resolution			0.1 Hz
Accuracy			0.5% ± 5 digits
Trigger Level			5 – 10 Hz, ≥10 A
			10 – 100 Hz, ≥5 A
			100 – 500 Hz, ≥10 A
Frequency via Flexible Current Probe
Range		375 and 376	5.0 - 500.0 Hz
Resolution			0.1 Hz
Accuracy			0.5% ± 5 digits
Trigger Level			5 – 20 Hz, ≥ 25 A
			20 – 100 Hz, ≥ 20 A
			100 – 500 Hz, ≥ 25 A
Resistance
Range		374 375 and 376	6000 Ω 60 kΩ
Resolution		374	0.1 Ω (≤ 600 Ω) 1 Ω (≤ 6000 Ω)
		375 and 376	0.1 Ω (≤ 600 Ω) 1 Ω (≤ 6000 Ω) 10 Ω (≤ 60 kΩ)
Accuracy			1% ± 5 digits
Capacitance
Range			1000 μF
Resolution			0.1 μF (≤ 100 μF) 1 μ F (≤ 1000 μF)
Accuracy			1% ± 4 digits
Mechanical Specifications
Size (L x W x H)			246 mm x 83 m x 43 mm
Weight			388 g
Jaw Opening			34 mm
Flexible Current Probe Diameter			7.5 mm
Flexible Current Probe Cable Length (head to electronics connector)			1.8 m
Environmental Specifications
Operating Temperature			10°C – +50°C
Storage Temp			-40°C – +60°C
Operating Humidity			Non condensing (< 10 –°C) ≤ 90% RH (at 10°C – 30°C) ≤ 75% RH (at 30°C – 40°C) ≤ 45% RH (at 40°C – 50°C)
Operating Altitude			3000 meters
Storage Altitude			12,000 meters
EMC			EN 61326-1:2006
Temperature Coefficients			Add 0.1 x specified accuracy for each degree C above 28°C or below 18°C
Safety Specifications
Safety Compliance			CAN/CSA-C22.2 No. 61010-1-04 ANSI/UL 61010-1:2004 ANSI/ISA-61010-1 (82.02.01):2004 EN/IEC 61010-1:2001 to 1000V Measurement Category (CAT) III 600V Measurement Category (CAT) IV Pollution Degree 2 EN/IEC 61010-2-032:2002 EN/IEC 61010-031:2002+A1:2008
Agency Approvals
Batteries			2 AA, NEDA 15A, IEC LR6