Voltcraft GM-100 Magnetic Field Analyser, Magnetic Field Tester

Magnetic field analyser with single-axis sensor for precise measurement of electromagnetic fields from 0.1 to 2000 mG (0.01 to 200 µT). The Voltcraft GM-100 delivers reliable readings for EMF inspection, appliance testing, and workplace safety assessments.

Advantages

High accuracy of ±(5% + 3 digits) at 50/60 Hz, wide frequency range from 30 Hz to 300 Hz, and dual-unit display in milliGauss or microTesla. Data hold and max hold functions capture fluctuating values, while the backlit LCD ensures readability in dim environments. Auto power off after 15 minutes preserves the 9V battery for up to 100 hours of operation.

Suitable for

• EMF surveys in residential and commercial buildings
• Testing household appliances and office equipment
• Verifying magnetic field levels near power lines and transformers
• Industrial hygiene and occupational safety checks

Key specifications

• Measurement range: 0.1–2000 mG / 0.01–200 µT
• Resolution: 0.1 mG / 0.01 µT
• Accuracy: ±(5% + 3 digits) at 50/60 Hz
• Frequency range: 30 Hz–300 Hz
• Display: 3½-digit LCD with backlight
• Sensor: single-axis
• Functions: data hold, max hold, auto power off, low battery indicator, overload indication
• Sampling rate: 2.5 times per second
• Power: 9V block battery (6F22), approx. 100 hours battery life
• Operating conditions: 0–50 °C, <80% RH
• Included: 9V battery, carrying case, user manual

Recommendations

For consistent results, hold the meter at a fixed distance from the source and allow the reading to stabilise. Use max hold to capture peak exposure levels during intermittent operation of equipment.