Martindale CM100 AC TRMS High Current Flex Meter

  • Flexible 8.5mm diameter sensor
  • Conductors up to 160mm diameter
  • 3 ranges from 30.00A to 3000A AC
  • 10mA resolution
  • True RMS
  • Configurable auto power off
  • Low battery indicator
  • Backlit display

CAT IV 600V True RMS
EAN: 5036162186790 SKU: MARCM100 Category: Tags: ,


The new CM100 True RMS current meter is fitted with a highly flexible current sensor 8.5mm in diameter, ideal for measurements on difficult sizes and shapes of conductors in hard to reach areas where conventional clamps won’t go.

The TRMS capability ensures accurate and reliable AC current measurement for distorted waveforms caused by today’s power electronics and non-linear loads.

Measurements are accurate and reliable with 3 ranges up to 3000A AC and resolution of 10mA in the 30A range. The light weight flexible sensor head will accommodate conductors up to 160mm in diameter and can be threaded through small apertures. Unlike conventional current transformers there is no maximum overload limitation.

The separate display module is fitted with a 1.8m lead giving even more freedom when working in areas with restricted access and is backlit for viewing in low light conditions. The Hold function can be used for saving displayed values and for longer term monitoring, the auto power off function can be easily disabled and Min/Max values recorded.

The CATIV 600V safety rating make the flex meter ideal for utility and industrial current measurement applications.

The CM100 is supplied with alkaline batteries and manual. All Martindale clamp meters come with a 2 year warranty.




AC current 30.00A/300.0A/3000A
Accuracy ± 3.0% ± 5 dgt (45Hz to 500Hz)
Flexible sensor length 458mm
Flexible sensor diameter 8.5mm
Max conductor 160mm diam.
Display cable length 1.8m
Sampling rate 2/sec.
Operating environment 0°C to 50°C <80% RH, non condensing
Storage temperature -10°C to 60°C, 70% RH
Complies with BS EN 61010-1

BS EN 61010-2-032

Class II

Double Insulation


EMC BS EN 61326-1

Pollution degree 2
Features Low battery indication, Auto power off/disable
Supply 2 x 1.5 V AAA batteries
Battery life 120 hrs typical alkaline
Weight 286g approx. incl batteries
Dimensions 120 x 70 x 26 mm
Includes 2 x 1.5V AAA alkaline batteries and manual



AC Current
DC Current
AC/DC Volts
Non-contact Voltage Detector
Auto ranging
Max Conductor Size85mm Ø160mm Ø55mm Ø
True RMS
Min Max
Auto Power Off
1mA resolution
High current to 3000A
50-1000V Insulation Test
Low Pass Filter
SafetyCAT IV 600VCAT IV 600VCAT IV 600V