Process control loop Basics - Instrumentation technician Course - Lesson 1
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5 سال پیش
-
Lesson 1 - Process Control
Lesson 1 - Process Control Loop basics and Instrumentation Technicians. Learn about what a Process Control Loop is and how Instrumentation technicians work on them. This will give an introduction to instrumentation engineering principles.
I'll discuss the various types of process variables industry has including Pressure, Temperature, Flow, Level & PH.
Industry wants to control these process variables using process control loops. Process control loops are made up of:
- Process variable
- Setpoint
- Sensor
- Logic solvers
-Actuators / final elements.
Let’s start with an example we are all familiar with - A home heating system - This isn't exactly how all heating systems work but it will help us understand a process control loop in terms we are all familiar with.
In our example of home heating system, we have all the components of a process control loop.
setpoint - This is the temperature we decide we want our rooms to be so we are nice and comfortable.
Process variable - This is the actual temperature of the room at this very moment.
The sensor - In this example the thermostat of the heating system is the sensor. It sends a signal of the current temperature of the room to the boiler.
The logic solver - Our boiler electronics is acting as the logic solver. Comparing the setpoint, the temperature we want our room to be, the Process Variable, the actual temperature of the room and deciding when to turn the boiler on
The actuator / final element- Actuators act to control the process variable. Our radiators in the room are the actuators. When the boiler ignites and pumps hot water to the radiator the room starts to warm.
These separate parts all work to keep the room at the perfect temperature.
This is the same in industry, although sometimes things are a lot more complicated!
Instrument techs work with process control loops by performing the following tasks:
Calibration of sensors – This is comparing the sensors against a constant in order to ensure accuracy of the equipment.
Planned maintenance. As well as calibration this can also include function testing of equipment to make sure it behaves as expected and prevent future breakdowns.
Repair – When planned maintenance fails to prevent equipment going wrong, Instrument technicians will be tasked with the repair of failed Instruments. This involves skilled fault finding.
As well as working on process control, Instrument techs also work with plant safety systems. This involves working on emergency shutdown systems that automatically put the plant in a safe condition if there is an emergency.
On petrochemical sites there is also equipment that detects fire and gas releases. Instrument technicians will be in charge of maintaining this equipment.
There is a lot to dive into and learn here. If you wish to learn more about the topics we have spoken about and much, much more. Please subscribe to the channel and click the notifications button for great videos in the future.
▶▶Check out brilliant T-shirts / Merch at my store:
https://www.redbubble.com/people/rudd...
▶▶Check out my website for more articles on Instrumentation:
https://www.instrumentationcontrol.in...
I'll discuss the various types of process variables industry has including Pressure, Temperature, Flow, Level & PH.
Industry wants to control these process variables using process control loops. Process control loops are made up of:
- Process variable
- Setpoint
- Sensor
- Logic solvers
-Actuators / final elements.
Let’s start with an example we are all familiar with - A home heating system - This isn't exactly how all heating systems work but it will help us understand a process control loop in terms we are all familiar with.
In our example of home heating system, we have all the components of a process control loop.
setpoint - This is the temperature we decide we want our rooms to be so we are nice and comfortable.
Process variable - This is the actual temperature of the room at this very moment.
The sensor - In this example the thermostat of the heating system is the sensor. It sends a signal of the current temperature of the room to the boiler.
The logic solver - Our boiler electronics is acting as the logic solver. Comparing the setpoint, the temperature we want our room to be, the Process Variable, the actual temperature of the room and deciding when to turn the boiler on
The actuator / final element- Actuators act to control the process variable. Our radiators in the room are the actuators. When the boiler ignites and pumps hot water to the radiator the room starts to warm.
These separate parts all work to keep the room at the perfect temperature.
This is the same in industry, although sometimes things are a lot more complicated!
Instrument techs work with process control loops by performing the following tasks:
Calibration of sensors – This is comparing the sensors against a constant in order to ensure accuracy of the equipment.
Planned maintenance. As well as calibration this can also include function testing of equipment to make sure it behaves as expected and prevent future breakdowns.
Repair – When planned maintenance fails to prevent equipment going wrong, Instrument technicians will be tasked with the repair of failed Instruments. This involves skilled fault finding.
As well as working on process control, Instrument techs also work with plant safety systems. This involves working on emergency shutdown systems that automatically put the plant in a safe condition if there is an emergency.
On petrochemical sites there is also equipment that detects fire and gas releases. Instrument technicians will be in charge of maintaining this equipment.
There is a lot to dive into and learn here. If you wish to learn more about the topics we have spoken about and much, much more. Please subscribe to the channel and click the notifications button for great videos in the future.
▶▶Check out brilliant T-shirts / Merch at my store:
https://www.redbubble.com/people/rudd...
▶▶Check out my website for more articles on Instrumentation:
https://www.instrumentationcontrol.in...
5 سال پیش
در تاریخ 1398/01/16 منتشر شده
است.
216,765
بـار بازدید شده