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Catalog excerpts
![157 - 1](https://img.directindustry.com/pdf/repository_di/72064/157-772221_1m.jpg)
Charged Plate Monitor Trek's Model 157 Charged-Plate Monitor offers better accuracy, stability and bandwidth than conventional designs. It combines Trek's patented precision charge-measurement capability with features that drive down ionizer maintenance and performance testing costs. Enhanced features, such as those that enable the operator to store and retrieve data as data points or graphs and record operator comments for reference, make the Model 157 ideal for use in dissipative testing of materials and monitoring of static charge. Key Specifications • Bandwidth (-3 dB): • Decay Mode Thresholds: • Data Retrieval/Analysis: • Data Acquisition Speed: DC to 80 Hz Start and stop voltages are programmable from 1 to ± 1000V in 1 V increments Data can be exported from the Model 157 into a PC through a USB port for subsequent analysis or record keeping When connected to a computer in Fast Mode, data can be collected at a rate of 1 ms/data point (Normal mode generally collects at a rate of 10 ms per data point).This is useful for evaluating the resistive or dissipative properties of materials Typical Applications Include • ESD monitoring of sensitive manufacturing processes such as semiconductor, disk drive and LCD • Testing of all types of ionizers, including room ionization systems, AC and DC blowers, nuclear ionizers, gun type ionizers, and pulsed DC ionizers • High temperature applications • ESD measurement of de-ionized water • Dissipative testing applications Features and Benefits • Customizable measurement capacitance provides assurance that ESD process needs are met in manufacturing and that there is conformance to ANSI/ESD-STM3.1 and IEC61340-5-1 standard test methods • Greater bandwidth enables “true” responses to be observed by avoiding the masking of results which can occur with other vendors' systems • Extremely low offset and drift ensures high accuracy, making it ideal for applications requiring critical ion balance such as GMR and TMR manufacturing areas • Compact and lightweight, for easy portability within a facility . NIST-traceable Certificate of Calibration provided with each unit . C£ compliant TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK 716-438-7555 • 585-201-1804 (fax) • www.trekinc.com • sa
Open the catalog to page 1![157 - 2](https://img.directindustry.com/pdf/repository_di/72064/157-772221_2m.jpg)
Performance Monitored Voltage Range 0 to ±1020 V DC or peak AC Zero Stability (referred to plate voltage) Drift with Time (no incident ion flow) Drift with Temperature Decay Mode Thresholds Start Voltage Start Accuracy Stop Voltage Stop Accuracy Discharge Timer Resolution Plate Self-Discharge Rate Voltage Monitor Output Scale Factor DC Accuracy Offset Voltage Output Noise Output Impedance Features Less than 6 V/minute Less than 10 mV/°C, noncumulative Programmable from 1 to ±1000 V in 1 V increments Within ±1 V of programmed start voltage Programmable from 0 to ±999 V in 1...
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