A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the IDEAL 61-920 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.


   IDEAL 61-920   Description / Specification:    
IDEAL 61-920 Ground Clamp Resistance Meter

The Ideal 61-920 is a digital clamp-on ground resistance tester. It can measure the ground resistance
by simply clamping around the ground conductor, ground rod or equipment ground conductor. The 61-920 also measures leakage AC current up to 30 AAC. It has a liquid crystal display with a maximum count of 2099.

Earth resistance (Auto-ranging).
Range 20Ω;
  Measuring range 0.00 to 20.99Ω: Resolution 0.01Ω, Accuracy ±1.5% ±0.05Ω.
Range 200Ω;
  Measuring range 16.0 to 99.9Ω: Resolution 0.1Ω, Accuracy ±2% ±0.5Ω.
  Measuring range 100.0 to 209.9Ω: Resolution 0.1Ω, Accuracy ±3% ±2Ω.
Range 1200Ω;
  Measuring range 160 to 399Ω: Resolution 1Ω, Accuracy ±5% ±5Ω.
  Measuring range 400 to 599Ω: Resolution 1Ω, Accuracy ±10% ±10Ω.
  Measuring range 600 to 1260Ω: Resolution 10Ω.

AC current (ACA) (sine wave) (50Hz/60Hz) (Auto ranging).
Range 100 mA;
  Measuring range 0.0 to 104.9 mA: Resolution 0.1 mA, Accuracy ±2% ±0.7 mA.
Range 1000 mA;
  Measuring range 80 to 1049 mA: Resolution 1 mA, Accuracy ±2%.
Range 10 A;
  Measuring range 0.80 to 10.49 A: Resolution 0.01 A, Accuracy ±2%.
Range 30 A;
  Measuring range 8.0 to 31.45 A: Resolution 0.1 A, Accuracy ±2%.


Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Clipping is the limiting of a signal so that it never exceeds some threshold.

Line Regulation
Line regulation is the capability to maintain a constant output voltage level on the output channel of a power supply despite changes to the input voltage level.

Peak Envelope Power
Peak envelope power is the maximum value of the envelope power. Envelope power is measured by making the averaging time much less than 1/fm where fm is the maximum frequency component of the modulation waveform. The averaging time is therefore limited on both ends: (1) it must be small compared to the period of the highest modulation frequency, and (2) it must be large enough to be many RF cycles long.

RMS or root mean square is a statistical measure of the magnitude of a varying quantity

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