Cropico DO7e

Rugged digital microhmmeter for low resistance measurement

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

Overview Specification

Cropico DO7e

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.

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Cropico DO7e

Technical specification

Measurement	4 Terminal Kelvin/Thomson principle eliminates error due to lead resistance. Open circuit measurement voltage~5V dc
Display	0.8" LED 6000 count with automatic decimal point and polarity indication
Ranges	6 push button or auto selected with LED indication
Calibration	Digital, security code protected
Protection	415 rms maximum at input terminals
Battery	Sealed lead acid, rechargeable cell gives a minimum of 1 hour of continuous measurement on the lowest 10 amp ranges and 20 hours on all other ranges. Internal charger with battery state indicator
Terminals	6mm binding posts accept spade tags and 4mm banana plugs
Working Temp	0...40°C rel. humidity 80% max. non-condensing
Storage Temp	-20...+50°C
Mains Supply	10/230 Volts +10% -10% 47Þ63Hz 20VA
Safety	EN 61010-1
EMC	Complies with EN61326
Dimensions	343 x 327 x 152mm (W D H) approx
Mass	6kg approx
Accessories	Supplied complete with mains cord, measuring leads with Kelvin Clips, handbook, and calibration certificate

Resistance ranges

Range	Resolution	Typical Current	Accuracy @ 20°C ±5°C, 1 year	Temperature Coefficient / °C
600Ohm	100mOhm	1mA	±(0.25% Rdg +0.05% FS)	40 ppm Rdg + 30 ppm FS
60Ohm	10mOhm	10mA	±(0.25% Rdg +0.05% FS)	40 ppm Rdg + 30 ppm FS