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Clamp Meters: Martindale CM100

Clamp Meters: Martindale CM100

Product catalog summary
Specification Overview
The CM100 Flexible Current Meter is designed for accurate electrical measurements under specified conditions. All accuracies are guaranteed at 23°C ± 5°C with less than 80% relative humidity for one year. The temperature coefficient is 0.1 times the specified accuracy per degree Celsius within the range of 0°C to 18°C and 28°C to 40°C.
Electrical Specifications
  • Range and Accuracy: The meter offers three ranges: 30 A with 0.01 A resolution, 300 A with 0.1 A resolution, and 3000 A with 1 A resolution. The accuracy is ± (3.0% of reading + 5 digits) for frequencies between 45 Hz and 500 Hz.
  • AC Conversion: Utilizes true RMS conversion, with accuracy specified from 2% to 100% of the range.
  • Crest Factor: Up to 1.6 at full scale and 3.2 at half scale.
  • Position Sensitivity: Measurement accuracy assumes a centrally positioned conductor. Errors increase with distance from the loop center, as detailed in the position sensitivity error table.
Environmental Conditions
  • Operating Environment: 0°C to 50°C, less than 80% RH, non-condensing.
  • Storage Temperature: -10°C to 60°C, 70% RH.
  • Altitude: Suitable for use up to 2000 meters.
General Features
  • Display: Liquid crystal display with a maximum reading of 3150 digits. Displays "–OL–" for overrange and a low battery symbol when necessary.
  • Sampling Rate: 2 times per second.
  • Auto Power Off: Activates after approximately 15 minutes of inactivity.
  • Power Supply: Operates on 2 x 1.5 V AAA batteries, with a typical battery life of 120 hours using alkaline batteries.
  • Dimensions and Weight: The meter measures 120mm x 70mm x 26mm and weighs approximately 286g including batteries. Probe cable lengths are 457mm for CM100/18 and 1524mm for CM100/60, with a nominal diameter of 8.5mm.
  • Included Accessories: Comes with 2 x 1.5V AAA batteries and instructions.
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Catalog excerpts

Clamp Meters: Martindale CM100-1

SpeciÀcation CM100 Flexible Current Meter Note 1: Measurement accuracy assumes a centrally positioned conductor, no external electrical or magnetic eld and within operating temperature range. See gure 2 and the position sensitivity error table below for additional errors where the conductor is not centrally positioned. Position from loop centre (refer to gure 2) A AC conversion: True rms. True rms AC current accuracy is specied from 2 % of range to 100 % of range. Crest factor: d 1.6 at full scale (30.00A/300.0A/3000A). d 3.2 at half scale (15.00A/150.0A/1500A). ELECTRICAL All specied accuracies are at 23°C ± 5°C, <80% RH for 1 year. Temperature Coefcient: 0.1 x (specied accuracy) per °C. (0°C to 18°C, 28°C to 40°C). ENVIRONMENTAL Operating environment: 0°C to 50°C, <80% RH, non-condensing Storage temperature: -10°C to 60°C, 70% RH Altitude: Up to 2000m GENERAL Display: Liquid crystal display with a maximum reading of 3150 digits. Overrange: “–OL–” is displayed Low battery indication: symbol is displayed when the battery voltage drops below the operational level Sampling rate: 2 times per second. Auto power off: After approx. 15 minutes Power: 2 x 1.5 V AAA batteries (IEC LR03, NEDA 24A) Battery life: 120 hours typical with alkaline Dimensions: Meter: 120mm (L) x 70mm (W) x 26mm (D) Probe cable length: 457mm (CM100/18), 1524mm (CM100/60) Probe cable diameter: 8.5mm nominal Cable length (probe to meter): 1.8m Weight: 286g approx. including batteries Includes: 2 x 1.5V AAA batteries and instructions

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