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.

Available Gain
Available Gain is the ratio, at a specific frequency, of power available from the output to the power in from the source.

Decibel (dB)
A unit of measurement of power which indicates relative power. A -10 dB means a reduction in power by 10 times, -20 dB means another 10 times or 100 times overall, -30 means another 10 times or 1000 times overall and so on.

Mismatch Uncertainty
Mismatch Uncertainty is caused by re-reflections between one device (the source) and the device that follows it (the load).

Pulse Power
Pulse Power, the energy transfer rate is averaged over the pulse width. Pulse width is considered to be the time between the 50 percent risetime/falltime amplitude points. Pulse power averages out any aberrations in the pulse envelope such as overshoot or ringing.

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