PRS-801 Resistance System Set

Unique wide range ohmmeter with data logging, calculating and computer.

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, megohoms,

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

instruments 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.

Specifications

Range:

Resistance from <0.1 (1.0E-1) Ohms to 200 Tera ohms (2.0E+14 ohms).

Maximum Resistivity with S11.11 concentric ring 2.0E+15 ohms/square

Test Voltages:

Automatic mode Default : <0.01 to 10 volts Variable 1.0E-1 to 1.0E+4 Ohms

Constant Voltage 10 volts +/- <0.2 volts 1.0E+4 to 1.0E+6 Ohms

At 10 & 100 Volts 100 volts +/- <2.0 volts 1.0E+6 to 2.0E+14 Ohms

Manual Mode : <0.01 to 10 volts Variable 1.0E-1 to 1.0E+5 Ohms

10 volts +/- <0.2 volts 1.0E+3 to 1.0E+9 Ohms

100 volts +/- <2.0 volts 2.0E+5 to 2.0E+14 Ohms

Accuracy:

Overall : +/-<5% at ambient conditions (at 23ðF and 30% Rh).

Specific Range Tolerances:

1.0E-1 to 1.0E+1 ohms: +/-5% Corrected for Test Lead Resistance

1.0E+1 to 1.0E+12 ohms: +/-2.0% with 10-foot Test Leads

1.0E+12 to 2.0E+14 ohms: +/-40% or +/-0.25 Decade with Grounded, Shielded Leads

Display:

Multi-function 2-5/8” x 1-5/8” Liquid Crystal Display with 0.5” digit height.

Displays 3-1/2 digits in Ohms, or 1.0EXX in exponential format. Ohms Display indicators:

W, KW, MW, GW and TW. Includes 19-segment analog scale (1-10 with 0.5 indication

with x1, x10 & x100 multipliers. Number of Data Points in Memory (0-80). Automatic

Electrification Time (seconds), or Time required to Manually obtain steady state measurement.

Displays data HOLD, BATTERY status, MIN, MAX, AVG, REC and Test Voltage (<10, 10 or 100V)

LED Indicators:

14 Color Programmable LED’s from <103 to >1014 ohms. Colors (RED, GREEN, YELLOW, or

Blank/OFF) may be operator programmed in SETUP mode.

Timer:

Times measurements in Seconds up to 99 seconds (Displayed on LCD)

Memory:

Register stores up to 80 data points (MEM # Displayed after RESET)

Power:

Two 9-VDC alkaline batteries. Nominal battery life 25 hours.

Dimensions:

4.0” wide x 6.0” long x 2.0” deep.

Weight:

22 ounces, with batteries