Cropico DO7 Micro Ohmmeter

The Cropico DO7 digital micro ohmmeter is a practical instrument for low resistance measurement, ideal for utilities use in the workshop, field or test facilities. It is of rugged construction, contained in a sealed ABS plastic case with lid and carrying handle.
 
The DO7 digital micro ohmmeter has many advanced features. Rechargeable batteries means real portability with more than 1 hour of continuous operation on the lowest ranges(10A), and 20 hours on all others. The Cropico DO7's internal charger will boost charge to 90% of full charge, switching automatically to a trickle maintenance charge. Warning LEDs illuminate when an open circuit lead condition is detected.
 

Cropico DO7 micro Ohmmeter supplied complete with mains power cord, measuring test leads with Kelvin Clips, handbook for Cropico DO7 and manufacturers Calibration Certificate.

Measurement:  4 Terminal Kelvin/Thomson principle eliminates error due to lead resistance. Open circuit measurement voltage~2V dc

Display:   0.8" LED 6,000 count with automatic decimal point and polarity indication

Ranges:   6 push button selected with LED indication

Calibration:   Digital, security key protected

Protection:     415 volts rms maximum at input terminals

Battery:    Sealed lead acid, rechargeable cells giving 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 Temperature:   0...40°C rel. humidity 80% max. non-condensing

Storage Temperature:    -20...+50°C

Mains Supply:     100/120/220/240 Volts +10% -13% , 47Hz to 63Hz 20VA

Safety:    IEC 1010 Protective Class 1

EMC:   Complies with EN61326

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

Weight:  8 kg approx

Resistance ranges

Range     Resolution     Typical current    Accuracy @ 20°C ±5 °C, 1 year   Temperature Coefficient / °C

60Ohm    10mOhm           1mA              ±(0.15% Rdg +0.05% FS)                40 ppm Rdg + 30 ppm FS

6Ohm       1mOhm            10mA