Practical Questions - Inst Tools https://instrumentationtools.com/category/question-for-you/ Instrumentation, Electrical, PLC, Tutorials Tue, 15 Feb 2022 04:11:42 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.1 https://instrumentationtools.com/wp-content/uploads/2018/10/cropped-Instrumentation-Tools-Logo-150x150.png Practical Questions - Inst Tools https://instrumentationtools.com/category/question-for-you/ 32 32 pH Monitoring System Triggers an Alarm https://instrumentationtools.com/ph-monitoring-system-triggers-an-alarm/ https://instrumentationtools.com/ph-monitoring-system-triggers-an-alarm/#respond Tue, 15 Feb 2022 04:11:40 +0000 https://ye1o34zhk8.onrocket.site/?p=55161 This pH monitoring system triggers an alarm if the pH value of the process water in the neutralization tank drifts past trip values.

The post pH Monitoring System Triggers an Alarm appeared first on Inst Tools.

]]> https://instrumentationtools.com/ph-monitoring-system-triggers-an-alarm/feed/ 0 Solenoid-controlled Valve Problem https://instrumentationtools.com/solenoid-controlled-valve-problem/ https://instrumentationtools.com/solenoid-controlled-valve-problem/#comments Sun, 06 Feb 2022 12:36:37 +0000 https://ye1o34zhk8.onrocket.site/?p=55097 Solenoid-controlled valve refuses to move when the operator pushes the switch. The control valve remains in fully-closed position.

The post Solenoid-controlled Valve Problem appeared first on Inst Tools.

]]> https://instrumentationtools.com/solenoid-controlled-valve-problem/feed/ 1 Oil and Air Pressure Actuated Lifts Questions https://instrumentationtools.com/oil-and-air-pressure-actuated-lifts-questions/ https://instrumentationtools.com/oil-and-air-pressure-actuated-lifts-questions/#respond Sat, 05 Feb 2022 04:30:00 +0000 https://ye1o34zhk8.onrocket.site/?p=55093 Two pressure-actuated lifts are used to raise a heavy weight off the ground. One lift uses oil under pressure while the other uses air.

The post Oil and Air Pressure Actuated Lifts Questions appeared first on Inst Tools.

]]> https://instrumentationtools.com/oil-and-air-pressure-actuated-lifts-questions/feed/ 0 Explain What these Spool Valve Symbols Represent? https://instrumentationtools.com/what-these-spool-valve-symbols-represent/ https://instrumentationtools.com/what-these-spool-valve-symbols-represent/#respond Thu, 03 Feb 2022 17:55:13 +0000 https://ye1o34zhk8.onrocket.site/?p=55083 Explain what these symbols represent, and how they are to be interpreted. Also, comment on the construction of a spool valve.

The post Explain What these Spool Valve Symbols Represent? appeared first on Inst Tools.

]]> https://instrumentationtools.com/what-these-spool-valve-symbols-represent/feed/ 0 Analytical Process Control Question https://instrumentationtools.com/process-control-question/ https://instrumentationtools.com/process-control-question/#respond Fri, 02 Apr 2021 09:28:00 +0000 https://3-inst.toejvy8-liquidwebsites.com/?p=26845 Describe in detail the effect this calibration error will have on the performance of the analytical process control system.

The post Analytical Process Control Question appeared first on Inst Tools.

]]> https://instrumentationtools.com/process-control-question/feed/ 0 Identify Solenoid Valves Energized or de-energized? https://instrumentationtools.com/identify-solenoid-valves-energized-or-de-energized/ https://instrumentationtools.com/identify-solenoid-valves-energized-or-de-energized/#comments Sun, 14 Mar 2021 12:01:00 +0000 https://3-inst.toejvy8-liquidwebsites.com/?p=26893 Sketch arrows next to each of the two solenoid valves showing the directions of air flow in the energized (E) and de-energized (D) states.

The post Identify Solenoid Valves Energized or de-energized? appeared first on Inst Tools.

]]> https://instrumentationtools.com/identify-solenoid-valves-energized-or-de-energized/feed/ 1 PLC Switch Actuation Status https://instrumentationtools.com/plc-switch-actuation-status/ https://instrumentationtools.com/plc-switch-actuation-status/#respond Fri, 12 Mar 2021 04:09:00 +0000 https://inst-tools.rdkaijf1-liquidwebsites.com/?p=16739 Determine the necessary PLC switch actuation status (i.e. low versus high process stimulus) to turn the yellow lamp on.

The post PLC Switch Actuation Status appeared first on Inst Tools.

]]> https://instrumentationtools.com/plc-switch-actuation-status/feed/ 0 Inspecting the Trends of PV and SP on a Process Chart Recorder https://instrumentationtools.com/inspecting-the-trends-of-pv-and-sp-on-a-process-chart-recorder/ https://instrumentationtools.com/inspecting-the-trends-of-pv-and-sp-on-a-process-chart-recorder/#respond Tue, 09 Mar 2021 10:09:00 +0000 https://3-inst.toejvy8-liquidwebsites.com/?p=26853 Inspecting the trends of PV and SP on a process chart recorder, you notice the poor quality of control loop.

The post Inspecting the Trends of PV and SP on a Process Chart Recorder appeared first on Inst Tools.

]]> https://instrumentationtools.com/inspecting-the-trends-of-pv-and-sp-on-a-process-chart-recorder/feed/ 0 Simple High Level Indicator Circuit https://instrumentationtools.com/simple-high-level-indicator-circuit/ https://instrumentationtools.com/simple-high-level-indicator-circuit/#respond Fri, 05 Mar 2021 06:29:29 +0000 https://ye1o34zhk8.onrocket.site/?p=52748 A potable water storage tank requires a high level alarm to warn operations personnel. Design a simple indicator circuit.

The post Simple High Level Indicator Circuit appeared first on Inst Tools.

]]> https://instrumentationtools.com/simple-high-level-indicator-circuit/feed/ 0 Analytical Control System of Heat Exchanger Questions https://instrumentationtools.com/analytical-control-system-of-heat-exchanger-questions/ https://instrumentationtools.com/analytical-control-system-of-heat-exchanger-questions/#comments Wed, 03 Mar 2021 05:31:00 +0000 https://3-inst.toejvy8-liquidwebsites.com/?p=26848 Describe in detail the effect this heat exchanger problem will have on the performance of the analytical control system.

The post Analytical Control System of Heat Exchanger Questions appeared first on Inst Tools.

]]> https://instrumentationtools.com/analytical-control-system-of-heat-exchanger-questions/feed/ 1