Overview Designed originally for flat (planar) packaging materials, the portable PRF-911 Concentric Ring test fixture will measure Surface and Volume Resistance of virtually any flat material in accordance with current ESD Association Standards. It will measure Surface Resistance per ANSI/ESD STM11.11, and Volume Resistance per ANSI/ESD STM11.12, and will approximate surface and volume resistivity measurements per ASTM D-257. Note that ANSI/ESD Standards are for materials employed for electrostatic discharge control, while ASTM D-257 is used to assess insulating materials utlilized in electrical distribution and power applications. The PRF-911 Concentric Ring is to be attached to the PRS-801 Resistance System included in this Packaging Test Kit. This system will can also give you Surface Resistavity by multiplying the surface resistance measurement in ohms by 10 to obtain surface resistivity in ohms/square. The small profile of the PRF-911 Concentric Ring allows the fixture to be inserted into small flexible containers, such as an Static Shielding, Anti-Static Bags or Moisture Barrier Bags, without having to cut the package. The PRF-911 incorporates a spring loaded, self-aligning center electrode feature. This unusual feature aids in maintaining consistent contact of the fixture’s highly conductive rubber electrode surfaces with materials under test. This reduces the need for frequent calibration and alignment of the fixture. The PTB-920 Dual Test Bed that’s included in this kit consists of an insulated test surface for ANSI/ESD STM11.11 Surface Resistance Measurements laminated to a steel test plate, which is employed for Volume Resistivity measurements. The four inch diameter steel test bed assembly includes a banana receptacle for instrument connections during volume measurements. This ESD Packing Test Kit will accurately meausure resistance from less than 100 ohms (1.0x1013 ohms/square). The PRF-911 is designed so that it can be connected to either the ground reference of the PRS-801 or earth ground to minimize the effects of extraneous fields and charges on the measurement. Features Measure surface resistance per ANSI/ESD STM11.11 Measure the volume resistance of planar materials per ANSI/ESD STM11.12 Approximates surface and volume resistivity measurements per ASTM D-257 Resistance measurements of ESD packaging Ideal for measuring Static Shielding and Anti-Static Bags Will also measure the resistance of Moisture Barrier Bags Includes the PRS-801 Wide Range Resistance Meter Also includes a 5lbs Rubber Electrode Packaged in a hard shell Carrying Case Certificate of Calibration Traceable to NIST included Includes PRS-801 Resistance Meter PRS-800BLB 10 foot Shielded Test Lead - Black PRS-800LR 10 foot Silicone Test Lead - Red PRS-801CIC Computer Input Cable PRS-801SSL Shielded Test Lead PRS-801TVL High Resistance Voltage Test Lead PRS-801CC Calibration Shunt PTB-915 Audit Test Bed PRS-801CON USB 2.0 to RS232 Serial DB9 Converter PRS-801BC Bulldog Clip PSI-870MAC Metal Clip (2) PRF-911 Concentric Ring PTB-920 Dual Test Bed PRF-911GGL 36" Green Silicone Test Lead PRF-911 BNC Adapter PRS-801-W 5 lbs Conductive Rubber Electrodes (1) PMK-151 Carrying Case PAB-023 Accessories Box User Manuals