Select Control Point Instrumentation Web Page Flashcards

(89 cards)

1
Q

Control point instrumentation refers to

A

Use of devices and systems to monitor, measure, and regulate critical variables at specific locations (control points) in a process, system, or structure

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2
Q

Where are Point instrumentation commonly used

A

commonly employed in engineering, industrial processes, and scientific research to ensure safety, efficiency, and performance.

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3
Q

What are the 5 Key Components of Control Point Instrumentation:

A

Sensors and Transducers
Data Acquisition Systems:
Controllers:
Actuators:
Displays and Interfaces:

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4
Q

What do the Sensors and Transducers do in the system

A

Detect changes in physical or chemical properties (e.g., temperature, pressure, flow, humidity, or chemical composition).
Convert these properties into electrical signals for further processing.

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5
Q

What does the Data Acquisition Systems do in the system

A

Collect data from sensors and transducers.
Process and store information for monitoring and analysis.

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6
Q

What do the controllers do in the system

A

Use input from sensors to make decisions based on pre-set conditions or algorithms.
Output control signals to actuators or other systems to adjust the process.

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7
Q

What do the Actuators do in the system

A

Implement control actions, such as opening valves, starting motors, or adjusting heaters.

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8
Q

What do the Displays and Interfaces in the system

A

Provide visual or digital feedback to operators.
May include graphs, alarms, and real-time data visualization.

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9
Q

What does it do in Industrial Automation

A

Monitoring and controlling machinery in manufacturing

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10
Q

What does it do in Process Industries

A

Ensuring proper operation of chemical reactors, distillation columns, or boilers.

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11
Q

What does it do in Civil Engineering

A

Monitoring structural health of bridges, dams, or buildings.

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12
Q

What does it do in Environmental Monitoring

A

Measuring air or water quality at critical points.

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13
Q

What does it do in Aerospace and Defence

A

Ensuring operational integrity of aircraft or weapons systems.

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14
Q

In the context of burner systems, control point instrumentation what does it do

A

the monitoring and control devices used to ensure the safe and efficient operation of the burner

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15
Q

Burner systems are critical in which applications

A

boilers, furnaces, and heaters, where precise control of fuel and air is essential for optimal performance, safety, and compliance with environmental regulations.

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16
Q

Key Components of Control Point Instrumentation in Burner Systems (9)

A

Flame Sensors
Temperature Sensors:
Pressure Sensor
Oxygen (O₂) Sensors
Fuel Flow Meters:
Airflow Sensors
Burner Management System (BMS)
Exhaust Gas Analyzers
Actuators and Valves

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17
Q

Purpose of flame sensor in PID

A

Detect the presence and quality of the flame to ensure proper combustion

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18
Q

Types of flame sensors in PID

A

ultraviolet (UV), infrared (IR), and ionization probes.

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19
Q

Purpose of Temperature Sensors in the PID system

A

Monitor temperatures in the combustion chamber, heat exchangers, and exhaust flues.
Ensure temperatures stay within safe operating ranges and optimize energy efficiency.

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20
Q

Purpose of Pressure Sensors in PID system

A

Measure air and fuel pressures to maintain proper ratios and flow rates.

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21
Q

Types of pressure sensors in PID burner

A

Include sensors for gas supply, air blowers, and combustion chamber pressures

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22
Q

Purpose of 02 sensors in PID burner systems

A

Monitor the level of oxygen in the exhaust gases.
Used to adjust the air-to-fuel ratio for complete combustion and reduced emissions.

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23
Q

What is the purpose of Fuel Flow Meters in a PID system

A

Measure the rate of fuel delivery (e.g., natural gas, oil) to the burner.
Enable precise control of fuel input based on demand.

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24
Q

What is the purpose of an Airflow Sensors in a PID system

A

Monitor the flow rate of combustion air supplied to the burner.
Work with dampers and blowers to maintain the correct air-fuel mixture.

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25
What does a Burner Management System (BMS) used for
A centralized control system that integrates sensor data to manage ignition, flame monitoring, and safety shutdowns. Ensures the burner operates safely under normal and abnormal conditions.
26
What does an Exhaust Gas Analyzers do in an PID burner system
Measure concentrations of CO, NOx, and other emissions. Help meet regulatory compliance and optimize combustion efficiency.
27
What are Actuators and Valves used for in a PID burner system
Regulate the flow of air and fuel based on signals from the control system. Include gas valves, air dampers, and modulating controls.
28
Functions of Control Point Instrumentation in Burner Systems: Safety:
Detect unsafe conditions (e.g., loss of flame, gas leaks) and initiate automatic shutdowns to prevent accidents.
29
Functions of Control Point Instrumentation in Burner Systems: Efficiency:
Optimize combustion by maintaining the ideal air-fuel ratio. Reduce energy consumption and minimize fuel costs.
30
Functions of Control Point Instrumentation in Burner Systems: Emission Control:
Monitor and control pollutants to meet environmental regulations. Reduce emissions of CO, NOx, and unburned hydrocarbons.
31
Functions of Control Point Instrumentation in Burner Systems: Performance Monitoring:
Provide real-time data for diagnostics, predictive maintenance, and performance optimization.
32
Functions of Control Point Instrumentation in Burner Systems: System Automation:
Enable precise and automated control of startup, operation, and shutdown processes.
33
What does RTD stand for
Resistance Temperature Detector
34
Why is it important to choose the right RTD
To ensure accurate and reliable temperature measurements
35
Things to consider when choosing an RTD (6)
temperature accuracy Stability response time cost environment installed on
36
In precision-critical applications which type of sensor should you choose
Platinum RTDs are highly regarded for their exceptional accuracy and repeatability, making them a preferred choice in industries such as pharmaceuticals, aerospace, and laboratory research
37
Which sensor is renowned for their durability and stability
Platinum RTDs are renowned for their durability and stability, especially in demanding applications, making them a reliable choice for long-term installations.
38
What is the response time of an RTD
Slow
39
What do you get if an RTD is going to be installed somewhere with environmental possible issues EX. humidity
Coating on the RTD
40
Are RTD cheap or expensive
Expensive
41
Key factors to consider when selecting a pressure transducer (5)
Pressure Range Accuracy Response Time Media Compatibility Output Signal
42
What is critical when selecting a pressure transducer
Knowing the pressure range
43
For high-pressure applications pressure transducer what is critical
durability
44
For pressure transducers low-pressure environments demand what is critical
precise sensitivity to small changes.
45
The accuracy of a pressure transducer depends on several factors, what are they
design, construction quality, calibration, and temperature compensation
46
for optimal performance which pressure transducer should be selected
high repeatability and minimal drift
47
The media compatibility of a pressure transducer refer to
its ability to interact with the fluid or gas it measures without degradation or performance loss
48
voltage signals are common in which environments
low-noise environments.
49
which signal is ideal for long-distance transmissions,
4-20ma
50
Selecting a Gas Flow Meter criteria (5)
Fluid Type Flow Range Accuracy Installation Requirements Output Signal
51
What type of Output Signal can a gas flow meter send
Analog (e.g., 4-20 mA), digital (e.g., Modbus), or pulse outputs.
52
Key factors to consider when selecting a thermistor (6)
Temperature Range Sensitivity Response Time Stability Interchangeability Self-Heating
53
What is the Sensitivity of a thermister
High
54
What is the Response Time of a thermister
Fast
55
What is the Stability of a thermister
Low
56
Key factors to consider when selecting an O₂ sensor (4)
Sensor Type Response Time Environmental Conditions Interference
57
Common types of 02 sensors (4)
Electrochemical Sensors Optical Sensors Infrared Sensors Zirconia (Zr) Sensors
58
Which 02 sensor is Ideal for portable and low-power applications
Electrochemical
59
Which 02 sensors are Known for their high precision and suitability in laboratory settings.
Optical sensors
60
Which 02 sensors are Typically used in industrial applications requiring robust gas analysis.
Infrared sensors
61
Which 02 sensors are Preferred for high-temperature environments such as boiler O₂ trim systems and biomass systems. These sensors are highly durable and capable of measuring oxygen at extremely low levels (ppm).
Zirconia (Zr) Sensors
62
Which 02 sensors are non-absorptive design, allowing them to deliver oxygen readings within seconds.
Zirconia (Zr) Sensors
63
Which Zirconia sensor Offers a response time of <4 seconds, ideal for rapid measurements.
Full Porous Cap
64
Which Zirconia sensor Provides a slightly slower response time of <15 seconds but is suitable for many applications.
Porous Lid
65
Which factors to consider in the environment when picking an 02 sensor (4)
Temperature, humidity, pressure, and vibration
66
What kinds of Interference can affect 02 sensors (3)
Combustible Gases Reducing Atmospheres Sulfur Compounds
67
The first step in selecting a PID controller
identifying the primary control objectives.
68
What does PID stand for
Proportional-Integral-derivative
69
What determines how the PID controller communicates with the system
The control interface
70
. Modern controllers offer a variety of input/output options, such as (2)
Analog Interfaces Digital Interfaces:
71
Which input/output interfaces are Common in legacy systems or simpler setups
Analog interfaces
72
Which input/output interfaces are Ideal for advanced integration with modern industrial systems, offering features like Modbus or Ethernet connectivity.
Digital interfaces
73
What defines the minimum and maximum setpoint values that the PID controller can manage.
The control range
74
What is influenced by the combined performance of the sensor, actuator, and PID controller.
The control accuracy
75
What governs critical parameters such as the fuel-to-air ratio and firing rate, ensuring that combustion occurs efficiently and safely.
A combustion control system
76
What control the fuel-to-air ratio based on a setpoint, adjusting the fuel and air flow together to maintain the desired combustion characteristics.
Single Point or Parallel Position Ratio Control
77
What does BAS stand for
Building Automation System
78
BAS should seamlessly integrate with existing building systems, including (3)
HVAC Systems lighting Access Control & Security
79
What is Scalability
allowing for future expansion or modification of the building’s systems
80
One of the primary goals of a BAS
optimize energy use across the building
81
What should include built-in fault detection and diagnostics to identify and address issues before they escalate
BAS
82
As BAS systems become increasingly interconnected what is needed
cyber security
83
What is a lead/lag system
A control system architecture that involves two or more identical systems working together, with one system designated as the "lead" (primary) system and the others as "lag" (backup) systems.
84
Which system needs Identical Configuration, Automatic Switching, Equal Performance and Fault Detection
Lead/lag system
85
What is typically 2 component integrated within a Building Management System (BMS) or Building Automation System (BAS)
interface device communication device
86
What is crucial for regulating parameters such as fuel flow rate and air/fuel mixture
The actuator
87
What facilitates data transfer within a system, and its selection depends on the specific application and system requirements
communication device
88
What is BMS
Burner Management System
89
What does a BMS control (3)
Flame sense, pressure sensors Emergency shutdown controls Data logging