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.

Carrier Wave (CW)
Carrier Wave or Continuous Wave is a sinusoidal signal without modulation.

A harmonic of a wave is a component frequency of the signal that is an integer multiple of the fundamental frequency, i.e. if the fundamental frequency is f, the harmonics have frequencies 2f, 3f, 4f, . . . etc.

Noise Floor
Noise floor is the measure of the signal created from the sum of all the noise sources and unwanted signals within a measurement system.

Ripple is the small unwanted residual periodic variation of the direct current (dc) output

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