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Cropico DO7e Micro Ohmmeter

The DO7e is a very rugged yet compact and portable digital micro ohmmeter for the measurement of low resistance.

Using a rechargeable sealed lead acid battery with built-in charger, the DO7e is capable of measuring with a current of 10 Amps on the lowest range.

The DO7e has been designed with the latest solid state and microprocessor techniques to ensure the very best in measurement, reliability and features.

Automatic range selection, forward and reverse current measurements with auto average and a remote start socket are all included as well as an energy saving power down mode.

Key Features

  True 4 wire measurement eliminates lead resistance
  6 push button ranges 6 milli ohm to 600 ohm
  Resolution 1 micro ohm on 6 milli ohm range
  Auto ranging
  10 Amp measuring current on lowest range
  0.8" LED Display daylight viewable
  Input protection up to 415 Volts rms
  Forward and reverse current measurement
  Auto average of forward and reverse measurement
  Auto power off
  Mains / rechargeable battery operation
  Digital calibration pass code protected

Data Sheet



4 Terminal Kelvin / Thomson principle eliminates errors due to lead resistance. Open circuit measurement voltage = 2V dc


0.8" LED 6000 count with automatic decimal point and polarity indication


6 push button selected with LED indication


Binding posts accept 4mm spade tags, 6mm bare wires and 4mm banana plugs (4mm safety sockets)

Working Temperature

0 degC to 40 degC rel. humidity 80% max. non-condensing

Storage Temperature

-20 to +50 degC

Mains Supply

115/230 volts + 10%-10%
47 to 63 Hz 20VA


EN 61010-1 EMC - EN 61236


343mm x 327mm x 152mm (W D H) approx


6kg approx


415 Vrms maximum at input terminals


Digital pass code protected


Sealed lead acid battery with built-in charger. Greater than 1000 measurements on lowest (10A range) and 20 hours on other ranges from a fully charged battery


Automatic average and display of measurement with forward and reverse current

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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