The Model 511 is a high-quality, portable, chopper-stabilized, non-contacting electrostatic field meter designed for measuring and auditing electrostatic fields in ESD sensitive areas so that operators can find them before they become a problem. Features of the Model 511 such as its LED indicator with a switch selectable measurement range of either ±2 kV or ±20 kV, add to instrument flexibility and benefit the operator through its ease of use. Operators also benefit from the ability to obtain or audit reliable and accurate ESD measurements in either ionized or non-ionized environments. The Model 511 can also be used for testing balance and +/- decay capabilities of ionizers when the optional Ionizer Test Kit (which includes the Model 511, the Model 511-CP Charge Plate and the Model 511-CH Charger) is ordered. See page 2 for ordering information. Key Specifications • Measurement Range: Low range: 0 to ±2 kV / inch High range: 0 to ±20 kV / inch • Measurement Accuracy: Voltage monitor output: Better than ±5% of reading, ±10 mV Voltage display: Better than ±5% of reading, ±2 counts Typical Applications Include • Audit/monitor electrostatic decay • Monitor ESD in semiconductor production • Measure electrostatic fields on film, polymers, and paper • Assess charge generation of materials, equipment and personnel • Available for use as a Field Meter and for testing balance and +/- decay capabilities of ionizers (with the optional Ionizer Test Kit) • Push-button “auto-zero” feature removes any offset voltage • Compact, pocket size • Easy-to-read LED display • Distance ranging system utilizes LEDs to indicate a 1-inch spacing between the instrument and the test target • Hold function allows the user to hold a display when a measurement is being taken in a location where ready the display is difficult • Chopper-stabilized probe technology allows for use in ionized environments . NIST-traceable Certificate of Calibration provided with each unit • CC compliant TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK 716-438-7555 • 716-201-1804 (fax) • www.trekinc.com •

Performance Measurement Range (switch selectable) Low Range 0 to ±2 kV / inch High Range 0 to ±20 kV / inch Measurement Accuracy As tested in TREK Test and Calibration Fixture # PE15024 Voltage Monitor Output Better than ±5% of reading, ±10 mV Voltage Display Measurement Stability Better than ±5% of reading, ±2 counts ±10 counts Voltage Monitor Output 2 volts output at full scale Ratio Low Range 1/1000 of the measured electrostatic field High Range 1/10000 of the measured electrostatic field Front Panel Meter Voltage Display 3 ^ digit LED display Display Resolution Low Range 1...