Answer / chinmay

Hook-ups are basically of two types Process Hook-Ups and
Pneumatic Hook-Ups. hook ups give complete information
required for installation of a particular instruments which
indicates cable entries, support details, connection sizes.
It clearly defines the instrumentation scope for
installation and helps in identifying the materials and
accesories required during installation
Process Hook-Ups covers all field instruments installed on
pipelines/vessels and other process equipments and
Pneumatic Hook-ups covers all instruments which require
instrument air to operate

Answer / sakthivel_eie

it shows how to isolate from process also how it woks

Answer / ram

Hookup to indicate the how to install the instruments.whether it's stand mounting or direct mounting in this drawing shows dot and stand when the dot indicates direct mounting and stand indicates stand mounting

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Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

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