High Accuracy Microhmmeter

2nd April 2007

Cropico Ltd

ES Admin

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The Cropico DO5000 series of microhmmeters offers increased flexibility for the highly accurate measurement of cable resistance and a variety of other electronic component test and calibration applications. The versatile DO5000 has programmable current settings in 100 steps from 10µA to 10A and measures from 3mΩ to 30kΩ with a resolution of 0.1µΩ and ±0.03% accuracy.

Measurement speed settings of 50,25 or 2.5 per second allows the selection of high speed testing for production line applications, a medium mode also for fast production testing but where the device under test needs a bit more time to settle or slow speed for manual operation where display clarity is a priority.

True four-wire resistance measurement eliminates lead resistance errors, while auto averaging and automatic temperature compensation with 20°C referencing or other user-defined settings both increase true measurement accuracy.

All these options are included in the basic DO5000 unit as well as a data logging function which stores up to 4000 readings with date and time stamp. Statistical analysis of these values allows the display of Max / Min /Average values as well as peak to peak and standard deviation. The DO5000 will even calculate cable lengths in ohms/metre.

Interfaces may added for remote control and integration into automated test systems. For applications where portability is required the 5001 model can be powered from either a mains supply or by the inbuilt rechargeable batteries. The charger is also incorporated into the unit and the full 10 Amps pulsed measuring current is available when used in battery mode.