Gossen Metrawatt METRAHIT COIL TRMS-Multimeter

Overview

The Gossen Metrawatt METRAHIT COIL is a professional-grade TRMS insulation multimeter designed for comprehensive testing and diagnosis of electrical equipment, motors, and transformers. It combines high-voltage insulation resistance measurement (up to 3.1 GΩ with interference voltage detection) with interturn short-circuit detection via the included COIL Test Adapter, plus full multimeter capabilities including true RMS AC/AC+DC measurements up to 10 kHz.

Key Features

• Insulation resistance measurement up to 3.1 GΩ with test voltages of 50 V, 100 V, 250 V, 500 V, and 1000 V
• Interference voltage detection during insulation testing
• Interturn short-circuit detection with included COIL Test Adapter
• TRMS AC voltage and current measurements: true RMS up to 10 kHz
• Activatable low-pass filter (1 kHz, −3 dB) for AC voltage range
• Direct current measurement: 100 nA to 10 A
• Current measurement with optional current sensor clamps (1 mV : 1 mA to 1 mV : 1 A transformation ratio)
• Resistance measurement with precision up to ±30000 digits for mΩ ranges
• Precision temperature indicator for Pt100/Pt1000 sensors and type K thermocouples
• Diode measurement (IK = 1 mA, Uflow to 5.1 V) and continuity testing with audible signal
• Display: ±3000 digits (3½ place) standard; ±30000 digits (4½ place) for VDC and mΩ
• Backlit display for low-light operation
• Acoustic signals for continuity, dangerous contact voltages, and overload limits
• Min–Max value storage and data memory with internal clock
• IP54 housing protection (dust and splash resistant) with protective cover
• Bidirectional infrared interface for PC data exchange

Applications

• Testing insulation integrity of motor windings, power cables, and electrical equipment
• Interturn short-circuit detection in motor and transformer coils
• Preventive maintenance and condition monitoring of rotating machinery
• Troubleshooting electrical faults and safety verification before energization
• Quality assurance testing in manufacturing and service centers
• Field measurements of voltage, current, resistance, and frequency in industrial settings

Included Accessories

• Protective rubber cover
• Safety measurement cables (KS17-2): 1000 V CAT II, 600 V CAT III with 4 mm test probes
• COIL TEST ADAPTER for interturn short-circuit measurement
• 2 AA batteries (1.5 V), pre-installed
• Condensed operating instructions (English/German)
• Full operating instructions on CD-ROM (English and German)
• DAkkS calibration certificate