Fluke 374 – True‑RMS AC/DC Clamp Meter

Fluke 374 – True‑RMS AC/DC Clamp Meter Specifications

⚡ Electrical Measurements

• **AC Current (via jaw clamp)**
  • Range: up to 600.0 A
  • Resolution: 0.1 A
  • Accuracy: ±2% ±5 digits (10–100 Hz), ±2.5% ±5 digits (100–500 Hz)
  • Crest Factor: up to 2.5 at 600 A; add 2% for crest factor >2

• AC Current (via optional iFlex flexible probe)
  • Range: up to 2500 A
  • Resolution: 0.1 A (≤ 600 A), 1 A (≤ 2500 A)
  • Accuracy: ±3% ±5 digits (5–500 Hz)
  • Crest Factor: up to 3.0 at 1400 A; add 2% for crest factor >2

• Position Sensitivity (iFlex probe)
  • Accuracy declines slightly when conductor is off-center (up to ±2% error depending on offset distances)

• DC Current (jaw)
  • Range: up to 600.0 A
  • Resolution: 0.1 A
  • Accuracy: ±2% ±5 digits

• AC Voltage
  • Range: up to 1000 V
  • Resolution: 0.1 V (≤ 600 V), 1 V (≤ 1000 V)
  • Accuracy: ±1.5% ±5 digits (20–500 Hz)

• DC Voltage
  • Range: up to 1000 V
  • Resolution: 0.1 V (≤ 600 V), 1 V (≤ 1000 V)
  • Accuracy: ±1% ±5 digits

• mV DC Input
  • Range: up to 500.0 mV
  • Resolution: 0.1 mV
  • Accuracy: ±1% ±5 digits

• Resistance
  • Range: up to 6000 Ω
  • Resolution: 0.1 Ω (≤ 600 Ω), 1 Ω (≤ 6000 Ω)
  • Accuracy: ±1% ±5 digits

• Capacitance
  • Range: up to 1000 µF
  • Resolution: 0.1 µF (≤ 100 µF), 1 µF (≤ 1000 µF)
  • Accuracy: ±1% ±4 digits

• Frequency (using clamp)
  • Range: 5.0–500.0 Hz
  • Resolution: 0.1 Hz
  • Accuracy: ±0.5% ±5 digits
  • Minimum trigger current varies by frequency band (e.g. ≥10 A at mid‑range)

🛠 Additional Features

• True‑RMS capability ensures stable readings on non-sinusoidal waveforms

• Filter mode to improve accuracy on variable-frequency drives (VFDs)

• Inrush current capture records peak motor start-up values

• Min/Max/Average data logging and data hold function

• Ergonomically shaped with a 34 mm jaw; optional iFlex probe improves conductor access

📦 Mechanical & Environmental Information

• Dimensions: approx. 249 × 85 × 45 mm

• Weight: approx. 395 g

• Jaw opening: 34 mm

• iFlex probe cable (if used): 1.8 m long, 7.5 mm diameter

• Operating temperature: –10 °C to +50 °C

• Storage temperature: –40 °C to +60 °C

• Operating humidity (non-condensing): up to 90% RH at 10–30 °C, 75% at 30–40 °C, 45% at 40–50 °C

• Altitude limits: operates up to 3000 m; storage to 12,000 m

• Safety category ratings:
  • CAT III 1000 V / CAT IV 600 V
  • Pollution degree 2 (per IEC 61010-1 / IEC 61010‑2‑032)

• Ingress protection: IP30 (when not operating)

✅ Quick Specs Table