• 6"x6" charged plate analyzer
• Use to evaluate the performance and functionality of ionizers
• Customizable measurement capacitance
• Programmable discharge time mode thresholds
• NIST calibrated with certificate included

The Charged Plate Analyzer is designed to provide quantitative and accurate measurements for a variety of air ionization tests in any location. The OUTPUT MONITOR connector on the rear panel is a buffered output providing a low-voltage replica of the voltage on the ion collecting plate.

The Charged Plate Analyzer employs a revolutionary new charged-plate monitor design that utilizes an ultra-high-impedance high-voltage follower to monitor the ion collecting plate voltage. This technique provides very high accuracy and virtually infinite impedance loading of the plate, while allowing the ion collecting plate to be charged and monitored through the same small-diameter connection.

This technique also makes the measurement capacitance independent of the physical size and shape of the ion collecting plate. Therefore, the size and shape of an ion collecting plate, as well as the measurement capacitance, may be customer specified to match a particular ESD-sensitive device within a manufacturing process, or it may be made to conform to the ESD Association Standard ANSI/ESDSTM3.1.

The Charged Plate Analyzer features three primary modes of operation: a negative (-) decay mode, a positive (+) decay mode, and a float mode. Decay mode START and STOP voltages are easy to program.

Use for Product Qualification and Compliance Verification testing of Ionizers per ANSI/ESD S20.20 testing per ANSI/ESD STM3.1 and ESD TR53. Use Decay mode to measure Discharge Times; the required limit is to be determined by the user. Use the Float Mode to determine the ionizer’s offset voltage; the Offset Voltage required limit per ANSI/ESD S20.20 is ±35 volts.

For DECAY mode operation, the ion collecting plate is pre-charged, either positively or negatively, to a level above the programmed START voltage. The time required to discharge the ion collecting plate from the programmed START voltage to the programmed STOP voltage is measured by the Charged Plate Analyzer. The discharge is due to ‘incident ion flow’ on the ion collecting plate.

For the FLOAT mode operation, the plate is initially discharged to zero and then allowed to float to the voltage level dictated by ‘incident ion flow’ on the ion collecting plate.

The simplicity of the design of the Charged Plate Analyzer makes it very reliable and completely portable. The Charged Plate Analyzer is powered by a rechargeable battery (supplied) that offers 8 hours of operation from a full charge. The unit can also be operated from a line supply using a battery eliminator/charger.