Frequency Selective Multimeter: 4031 Series

The Frequency Selective Multimeter is an essential earthing/grounding system tester to filter out the predominant 50 or 60Hz currents that are often present in a typical test situation.
This is done by injecting at frequencies other than 50 or 60Hz and making sure that the instrument that detects voltages and currents around the loop is tightly tuned to the same frequency.

The 4031 is a hand-held frequency-selective ammeter and voltmeter used to measure the I/V magnitudes and phase of signals induced into an earth loop via a high-power current injection system such as the Model 4041 and 4046.
The voltmeter part of the 4031 allows fall of potential and step & touch voltages to be measured easily and accurately, which is important for the safety of both the general public and utility personnel.
In earth loops, measurements are made of voltage, current and phase angles, enabling the impedance of the circuit to be calculated by the software.

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• LCD display and function buttons
• On board GPS module used for cableless phase synchronisation with injection current signal
• Vin range: 200mV, 2V, 20V, 200V
• Small and lightweight
• Rugged and durable
• Frequency tuneable voltmeter and ammeter

• Weight: 0.45kg
• Battery:3.6V / 2350 mAH Li-On Battery

• 6 hours of measurements on a single charge
• Rugged design for field use and easy operation
• Cable-less phase synchronisation with injection current via GPS