Monitor
Staff -- Semiconductor International, 3/15/2006
Model 157 is a charged plate monitor that enables the storage and retrieval of data and provides an additional fast data acquisition mode (1 msec/data point). Its charge measurement design utilizes an ultrahigh-impedance, high-voltage follower to monitor the ion collecting plate voltage, which improves accuracy readings with extremely low offset and drift. The monitor features a resolution of 0.1 V, DC accuracy >0.1% of full scale for voltage monitor output, a bandwidth of -3 dB to 80 Hz, &6 V/min drift with time, and monitored voltage range of 0 to ±1020 VDC or peak AC. Trek Inc., Medina, N.Y., wwwtrekinc.com.
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