Portable, precision resistance measurement from < 0.1 to 2.0 x 1014 ohms. With computer download capabilities. Measures resistance from < 0.1 to 2.0x1014 ohms with overall measurement accuracy of ±5%. Data may be downloaded to standard computer systems. Records and stores up to 80 measurements. Constant voltage Fully automatic, controls test voltage, resistance ranging and electrification period. Displays measurements in ohms, kilohms, megohms, gigohms and terohms, and in exponential format. Battery operated (2 x 9 Volts) Overview The PRS-801 is a unique, wide range ohmmeter with data logging, calculating and computer communication capabilities. Fully portable and battery operated, the PRS-801 measures resistance from 0.1 to 2.0x1014 ohms with measurement accuracy of ±5%. It can be operated in Automatic, Automatic-Manual and Manual modes. To enhance accuracy in the 0.1 to 10 ohm ranges, the PRS-801 incorporates an automatic self calibration feature. Low range self calibration is performed using a defined resistance reference supplied with the system. This sophisticated instrument digitally displays measurements in ohms, kilohms, megohms, gigohms and terohms, and in exponential format, e.g., 1.5E+8. It simultaneously displays data with a fully synchronous analog scale using x1, x10 and x100 multipliers, and a bank of color programmable LED's (<103 to >1014 Ohm). Multiple test voltages are available in <10V, 10V and 100V ranges, which may be selected automatically by the instrument to comply with industry measurement practices or manually by the operator. The PRS-801 records and stores up to 80 measurements, and calculates Minimum, Maximum and Average of all stored data. Data may be downloaded to standard computer systems via the instrument's RS-232 Output Port, serial cable and supplied software for ESD Program documentation in Windows® Excel® spread sheets. Fully automatic, the PRS-801 controls test voltage, resistance ranging and electrification period to make the most accurate and repeatable measurements available to ESD Auditors and laboratory technicians.