The 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 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.
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 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.
Rugged digital micro ohmmeter for low resistance measurement.
- High accuracy from 600 microhms to 60ohms ranges
- LED display for daylight viewing
- Mains / rechargeable battery operation
Technical specification
Resistance ranges
| 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 | 415rms 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 Temp | 0...40°C rel. humidity 80% max. non-condensing |
| Storage Temp | -20...+50°C |
| Mains Supply | 100/120/220/240 Volts +10% -13% 47Þ63Hz 20VA |
| Safety | IEC 1010 Protective Class 1 |
| EMC | Complies with EN61326 |
| Dimensions | 343 x 327 x 152mm (W D H) approx |
| Mass | 8 kg 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 |
|---|---|---|---|---|
| 60Ohm | 10mOhm | 1mA | ±(0.15% Rdg +0.05% FS) | 40 ppm Rdg + 30 ppm FS |
| 6Ohm | 1mOhm | 10mA |
