The Yokogawa 701931 is a clamp-type current probe engineered for non-invasive AC and DC current measurement up to 500 ARMS across a DC to 2 MHz bandwidth. This probe connects directly to Yokogawa DL series instruments and other waveform measuring devices via BNC connector, requiring only a 1 MΩ input impedance. Its compact clamp jaw accommodates conductors up to Ø20 mm, enabling in-circuit measurements without circuit interruption or signal path modification.
Technical Specifications
• Current Range: 1 mA to 500 ARMS continuous; up to 700 A peak (DC and 45–66 Hz)
• Bandwidth: DC to 2 MHz
• Amplitude Accuracy: ±1% of reading ±5 mV (0–500 ARMS); ±2% of reading for peak measurements to 700 A (DC, 45–66 Hz)
• Sensitivity: 0.01 V/A
• Noise Floor: 25 mARMS or less (20 MHz bandwidth instrument)
• Temperature Coefficient: ±2% or less (0–40°C, 50 Hz, 500 ARMS input)
• Maximum Circuit Voltage: 600 V CAT2, 300 V CAT3 (insulated conductors)
• External Magnetic Field Effect: Equivalent to 800 mA maximum (DC or 60 Hz, 400 A/m field)
• Power Consumption: 7.2 VA maximum
• Supply Voltage: ±12 V ±0.5 V
• Operating Environment: 0–40°C, ≤80% RH (no condensation)
• Storage Environment: −10–50°C, ≤80% RH (no condensation)
– Key Features
• Clamp configuration eliminates need for circuit interruption
• 2 m sensor cable with BNC terminal; 1 m power supply cable
• Probe dimensions: approximately 176 (W) × 69 (H) × 27 (D) mm
• 30-minute warm-up period recommended for offset drift compensation
• 520 g weight (sensor and terminator)
– Compatibility & Integration
Power delivery via Yokogawa DL series probe supply terminal or external power supplies such as the 701934. Requires measuring instrument with minimum 1 MΩ input impedance; 50 Ω impedance instruments are not suitable.
