*Z

Here’s a list of Instrumentation abbreviations starting with the letter “Z”, commonly used in P&IDs, datasheets, control systems, and field instrumentation.

Z: Zone / Zero / Zonal / Auxiliary (context dependent)
ZA: Zone Alarm / Zero Alarm
ZAC: Zone Alarm Controller / Zero Alarm Controller
ZAM: Zone Alarm Module / Zero Alarm Module
ZB: Zone Bus / Zero Bus
ZBC: Zone Bus Controller / Zero Bus Controller
ZC: Zone Controller / Zero Controller
ZCA: Zone Control Assembly / Zero Control Assembly
ZCC: Zone Control Cabinet / Zero Control Cabinet
ZCD: Zone Control Device / Zero Control Device
ZCM: Zone Control Module / Zero Control Module
ZCP: Zone Control Panel / Zero Control Panel
ZCS: Zone Control System / Zero Control System
ZD: Zone Device / Zero Device
ZDC: Zone Device Controller / Zero Device Controller
ZDD: Zone Detection Device / Zero Detection Device
ZE: Zone Element / Zero Element
ZF: Zone Flow / Zero Flow
ZFC: Zone Flow Controller / Zero Flow Controller
ZFD: Zone Flow Device / Zero Flow Device
ZFM: Zone Flow Meter / Zero Flow Meter
ZG: Zone Gauge / Zero Gauge
ZH: Zone High / Zero High
ZI: Zone Indicator / Zero Indicator
ZIC: Zone Indicating Controller / Zero Indicating Controller
ZIM: Zone Interface Module / Zero Interface Module
ZL: Zone Low / Zero Low
ZLA: Zone Low Alarm / Zero Low Alarm
ZLC: Zone Low Controller / Zero Low Controller
ZLD: Zone Low Device / Zero Low Device
ZLI: Zone Low Indicator / Zero Low Indicator
ZLT: Zone Low Transmitter / Zero Low Transmitter
ZM: Zone Module / Zero Module
ZMC: Zone Module Controller / Zero Module Controller
ZN: Zone Node / Zero Node
ZO: Zone Output / Zero Output
ZOC: Zone Output Controller / Zero Output Controller
ZOM: Zone Output Module / Zero Output Module
ZP: Zone Point / Zero Point
ZPC: Zone Point Controller / Zero Point Controller
ZPD: Zone Pressure Device / Zero Pressure Device
ZPI: Zone Pressure Indicator / Zero Pressure Indicator
ZPT: Zone Pressure Transmitter / Zero Pressure Transmitter
ZR: Zone Recorder / Zero Relay
ZRC: Zone Recorder Controller / Zero Relay Controller
ZRD: Zone Relay Device / Zero Relay Device
ZS: Zone Switch / Zero Switch
ZSC: Zone Switch Controller / Zero Switch Controller
ZSD: Zone Shutdown Device / Zero Shutdown Device
ZSI: Zone Status Indicator / Zero Status Indicator
ZSM: Zone Signal Module / Zero Signal Module
ZT: Zone Transmitter / Zero Transmitter
ZTC: Zone Temperature Controller / Zero Temperature Controller
ZTD: Zone Trip Device / Zero Trip Device
ZTI: Zone Temperature Indicator / Zero Temperature Indicator
ZTT: Zone Temperature Transmitter / Zero Temperature Transmitter
ZV: Zone Valve / Zero Valve
ZVC: Zone Valve Controller / Zero Valve Controller
ZVM: Zone Valve Module / Zero Valve Module