Lessons In Industrial Instrumentation-17

3284

Wallace & Tiernan, 1304 Wally box, 1304

Wastewater disinfection, 505, 2276 Watchdog timer circuit, 2658 Waveform, periodic, 1881 Wavenumber, 1813

Weak acid, 286 Weak base, 287

Wear-out period, 2639 Wedge, 104 Weighfeeder, 1734 Weight density, 57

Weight-based level instrument, 1494 Weir, 1657, 2067

Well manometer, 1314

Weschler panel-mounted bargraph indicator, 512 Westinghouse model CO-11 overcurrent relay,

1979 Weston cell, 1291 Wet calibration, 1457 Wet contact, 665 Wet leg, 1436

Whip antenna, 492, 1210 Whitelist, 2740

Whitelisting, application, 2750 Wild flow, 2517, 2579

Wild variable, 2275, 2517 Winch, 83

Wind-up, controller, 2298, 2389, 2415 Wire duct, 612

Wire loom, 612 Wire pulling, 606 Wire, jumper, 2827

Wireless transmitter, 2450 WirelessHART, 1045, 1236, 2745 WLAN, 1047

Wonderware HMI software, 856 Work, 75, 293

Worm gear, 113, 2126, 2128

X-windows, 1078

XD Scale, FOUNDATION Fieldbus AI block parameter, 1198

XIC (examine if closed), 816 XIO (examine if open), 816

INDEX

Yagi antenna, 493, 1210

Yokogawa CENTUM distributed control system (DCS), 2379, 2380

Yokogawa DPharp pressure transmitter, 1339 Yokogawa model DYF vortex flowmeter, 1184 Yokogawa model EJA110 di erential pressure

transmitter, 1339, 1347

Zero, 499

Zero adjustment, 1258 Zero energy state, 1369 Zero gas, 1839, 1849

Zero sequence, 458, 465, 739, 2027 Zero shift, 1259

Zero, transfer function, 411, 413, 419, 424 Ziegler, J.G., 2461

Ziegler-Nichols “closed-loop” (Ultimate) PID tuning example, 2482

Ziegler-Nichols “open-loop” (Reaction rate) PID tuning example, 2480

Zirconium oxide, 2079

Zone of protection, power system, 2014, 2031 Zone, hazardous area, 2603