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Features

• Accurate Wide Range Resistance Measurements: 0.01 Ω to 2.0×10¹⁴ Ω with overall nominal accuracy <±5%; Maximum range 2.0×10¹⁴ Ω
• Variable Voltage 0.1 mv to 9.99 V for low resistance measurements
• Constant Test voltages 10V and 100V for specification measurements to meet international and domestic ESD measurement standards
• Auto Resistance Range Control
• Auto Test Voltage Control
• Uses rechargeable Li-ion batteries
• 999 Data Point Memory
• Download to Excel® in batches or individual measurements with Prostat Connect 2.0

Wide Range. Accurate. Portable.

The widest range portable constant voltage resistance instrument in today’s market, the PRS-801B is the choice of most ESD professionals. Why? Because the PRS-801B has an outstanding performance combination of measurement speed, wide range and accuracy. Its constant test voltage system is extremely stable and consistent with lab level, bench top instruments.

Measurement Range

The PRS-801B’s wide range offers the maximum flexibility in measurement applications. In effect, it is 3 instruments in one because it functions as:

1. A low resistance range instrument for measurements from 0.01 to 1.0×10⁴ ohms. Most competitive instruments do not measure accurately at or below 1.0×10³ ohms. Thus, the typical ESD practitioner must carry a DMM for low resistance checks of ground connections. To ensure-field accuracy, the PAS-853S Test Lead Shunt is used to remove any resistance in the test leads and get the most accurate reading.
2. Wide range audit instrument to meet ANSI/ESD S20.20 and TR53 procedures from 1.0×10³ to 1.0×10¹¹ ohms. Measurement guidelines require accurate measurements from one decade below to one decade above the resistance requirements of a facility’s ESD program. The PRS-801B easily exceeds this requirement by as much as 3 decades, depending on program requirements.

Measurement Flexibility

Connect to Virtually any 2-wire Fixture or electrode configuration. The PRS-801B’s simple ¾ inch terminal spacing provides connectivity to a variety of electrodes and fixtures.

1. Terminal design allows use of mechanically shielded or non-shielded banana plug leads.
2. BNC adapters with ¾ inch spacing mount directly to the PRS-801B terminals for measurements with wide range probes and fixtures.
3. An instrument reference allows use of a third wire instrument reference to minimize effects of extraneous fields on precision fixture measurements
   

Measurement Speed: Electrification Period

The PRS-801B is one of the fastest measurement instruments in today’s precision measurement market. Laboratory tests confirm the PRS-801B can measure from 0 to 1.0×10¹² ohms in 2.5 seconds. Thus, its specified electrification period (EP) is 15 seconds in accordance with ANSI/ESD STM 11.11 Surface Resistance of Planar Materials. Furthermore, its EP is automatically adjusted to insure a stable measurement is displayed.

Multiple Modes of Operation

The PRS-801B has Automatic, Manual, Auto-Manual and Continuous operational modes, plus exponential display or standard numeric display in Ω, KΩ, MΩ, GΩ and TΩ. It’s easy to use and read. Measurements are summarized in decades using multiple LED’s from <10² to >10¹⁴, whose colors are user programmable to be RED, GREEN or YELLOW/ORANGE.

Constant Test Voltages

PRS-801B has three Test Voltages ranges that provide stable test references for repeatable measurements. In AUTO mode, the instrument automatically selects the proper test voltage for the resistance being measured.

1. <10 Volts: 0.01 to 9.99x10³ Ω <10V is variable across this range from 0.1 mV to 9.99V
2. 10 Volts – Constant Voltage under Load Constant at 1.0×10⁴ to 9.99×10⁵ Ω
3. 100 Volts – Constant Voltage under Load Constant at 1.0×10⁶ to 2.0×10¹⁴ Ω

High Quality Test Leads

Prostat’s 10 foot test leads supplied with each PRS-801B consist of hundreds of fine strands of copper that offer flexibility and accuracy. The outer insulation of each test lead is high grade silicon with an extremely high resistance to minimize measurement errors. These leads are designed for convenient audit measurements in the manufacturing environment up to 1.0×10¹² Ω.The 30 inch high performance test lead harness is designed for PRS-801B precision high resistance measurements in the 10¹¹ to 10¹⁴ range. It includes a shielded (-) negative test lead for accuracy and minimum electrical interference from personnel and equipment. The shield is connected directly to the PRS-801B instrument reference and fixture ground.