Prostat PRS-812 Resistance Meter Set

Resistance Meter Set

• Constant voltage: 10 volts: ± <0.2 volts 1.0E+4 to <1.0E+6 Ohms
• Overall: ± < 5% at ambient conditions (at 23o C and 30% Rh)
• Timer: Times measurements in Seconds up to 99 seconds (Displayed on LCD)
• Memory: Register stores up to 80 data points (MEM # Displayed after RESET)
• Test  volts: Manual Selection of <10, 10 or 100 volts in Manual Mode

The PRS-812 is a constant voltage, wide range ohmmeter with data logging and calculating capabilities. Fully portable and battery-operated, the PRS-812 measures resistance from <0.1 to 1.0x1012 ohms with measurement accuracy of ±5%. It can be operated in fully Automatic, Automatic,-Manual and Manual modes.

 This sophisticated instrument digitally displays measurements in ohms, kilohms, megohms, gigohms and terohms, and in exponential format, e.g., 1.5E8.

 It simultaneously displays data with a fully synchronous analog scale using x1, x10 and x100 multipliers, and a bank of color-coded LED's (<103 to >1012 Ohms). Multiple test voltages include 0.01-10V, constant 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-812 records and stores up to 80 measurements, and calculates minimum, maximum and average of all stored data.

 Fully automatic, the PRS-812 controls test voltage, resistance ranging and electrification period to make the most accurate and repeatable measurements available to ESD Auditors and technicians.

Wide Range. Accurate. Portable.

The PRS-812 is a wide range portable constant voltage resistance instrument designed for dedicated ESD Auditors and professionals. The PRS-812 is a cost effective choicefor those ESD professionals who require outstanding accuracy and performance, but do not require data downloading. Like its big brother the PRS-801, the PRS-812 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

To ensure-field accuracy, the PRS-801CC Calibration Shunt is used to confirm and adjust the accuracy of its 0.1 to 10 ohm resistance range.

1. A low resistance range instrument for measurements from 0.1 to 1.0x104 ohms. Most competitive instruments do not measure accurately at or below 1.0x103 ohms. Thus, the typical ESD practitioner must carry a DMM for low resistance checks of ground connections.
   
   To ensure-field accuracy, the PRS-801CC Calibration Shunt is used to confirm and adjust the accuracy of its 0.1 to 10 ohm resistance range.
2. A wide range audit instrument that meets and exceeds requirements for ANSI/ESD S20.20 and TR53 periodic verification (audit) procedures from 1.0x103 to 1.0x1011 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-812 easily exceeds this requirement by as much as 2 decades, depending on program requirements.
3. Precision high resistance instrument for Packaging measurements to S541 Standards, for material and product testing, and acceptance verification. Few competitive instruments can measure accurately up to or beyond 1.0x1011 ohms, while the PRS-812 comfortably measures up to 1.0x1012 ohms.

Measurement Flexibility

Connect to Virtually any 2-wire Fixture or electrode configuration.

The PRS-812’s simple ¾ inch terminal spacing provides connectivity to a variety of electrodes and fixtures.

• Terminal design allows use of mechanically shielded or non-shielded banana plug leads
• BNC adapters with ¾ inch spacing mount directly to the PRS-801 terminals for measurements with wide range probes and fixtures

Measurement Speed: Electrification Period

Along with the PRS-801, the PRS-812 is one of the fastest measurement instruments in today’s precision measurement market. Laboratory tests confirm the PRS-812 can measure from 0 to 1.0x1012 ohms in 2.5 seconds. Thus, its specified electrification period (EP) is 8 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-812 has Automatic, Manual and Auto-Manual 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 <103 to >1012.

Constant Test Voltages

PRS-812 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: 0.1 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 1.0x10⁴ to 9.99x10⁵ Ω
   Target calibration is to within ± 0.01 volt, and always within ±1%
3. 100 Volts - Constant Voltage under Load
   Constant at 1.0x10⁶ to 1.0x10¹² Ω
   Target calibration is to within ± 0.01 volt, and always within ±0.1%

High Quality Test Leads

Prostat’s 10 foot test leads supplied with each PRS-812 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 1.0x1012 Ω.

Measurement Convenience & Calculations

Not only does the PRS-812 make accurate measurements quickly, it stores up to 80 measurement data points in its memory. Press the RECORD/RECALL button to retrieve information and calculate attributes of the stored data.

• Minimum Recorded Measurement
• Maximum Recorded Measurement
• Average of all Recorded Measurements

Did you store a message in error? It can be simply selected and removed from the memory register without removing other data points. The PRS-812 is a convenient, accurate instrument that meets virtually every measurement requirement in the ESD standards world.