This document provides an overview of process instrumentation and temperature measurement. It discusses the objectives of understanding instrument characteristics and errors. It then covers various temperature sensor types like liquid-in-glass thermometers, bimetallic thermometers, thermistors, and infrared sensors. Application and advantages/disadvantages are summarized for each type. Additional sections cover flow measurement technologies, orifice plates, and variable area flowmeters.
A Thermocouple is a sensor used to measure temperature. Thermocouples consist of two wire legs made from different metals. The wires legs are welded together at one end, creating a junction. This junction is where the temperature is measured. When the junction experiences a change in temperature, a voltage is created. The voltage can then be interpreted using thermocouple reference tables to calculate the temperature.
There are many types of thermocouples, each with its own unique characteristics in terms of temperature range, durability, vibration resistance, chemical resistance, and application compatibility. Type J, K, T, & E are “Base Metal” thermocouples, the most common types of thermocouples.Type R, S, and B thermocouples are “Noble Metal” thermocouples, which are used in high temperature applications (see thermocouple temperature ranges for details).
Thermocouples are used in many industrial, scientific, and OEM applications. They can be found in nearly all industrial markets: Power Generation, Oil/Gas, Pharmaceutical, Bio Tech, Cement, Paper & Pulp, etc. Thermocouples are also used in everyday appliances like stoves, furnaces, and toasters.
Thermocouples are typically selected because of their low cost, high temperature limits, wide temperature ranges, and durable nature.
A Thermocouple is a sensor used to measure temperature. Thermocouples consist of two wire legs made from different metals. The wires legs are welded together at one end, creating a junction. This junction is where the temperature is measured. When the junction experiences a change in temperature, a voltage is created. The voltage can then be interpreted using thermocouple reference tables to calculate the temperature.
There are many types of thermocouples, each with its own unique characteristics in terms of temperature range, durability, vibration resistance, chemical resistance, and application compatibility. Type J, K, T, & E are “Base Metal” thermocouples, the most common types of thermocouples.Type R, S, and B thermocouples are “Noble Metal” thermocouples, which are used in high temperature applications (see thermocouple temperature ranges for details).
Thermocouples are used in many industrial, scientific, and OEM applications. They can be found in nearly all industrial markets: Power Generation, Oil/Gas, Pharmaceutical, Bio Tech, Cement, Paper & Pulp, etc. Thermocouples are also used in everyday appliances like stoves, furnaces, and toasters.
Thermocouples are typically selected because of their low cost, high temperature limits, wide temperature ranges, and durable nature.
Manufacturer of exceptionally accurate infrared pyrometers for industrial applications. Williamson pyrometers can accurately view through common industrial interferences including steam, flames, combustion gasses, water, plasma and oil.
Despite ongoing advancements in measurement
and communications technology, instrumenting
a process for feedback control
remains a technical challenge. Today’s sensors
are certainly more sophisticated than ever
before, and fieldbus technology has simplified
many installation issues considerably.
Nonetheless, much can still go wrong with an
instrumentation project.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Manufacturer of exceptionally accurate infrared pyrometers for industrial applications. Williamson pyrometers can accurately view through common industrial interferences including steam, flames, combustion gasses, water, plasma and oil.
Despite ongoing advancements in measurement
and communications technology, instrumenting
a process for feedback control
remains a technical challenge. Today’s sensors
are certainly more sophisticated than ever
before, and fieldbus technology has simplified
many installation issues considerably.
Nonetheless, much can still go wrong with an
instrumentation project.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERSveerababupersonal22
It consists of cw radar and fmcw radar ,range measurement,if amplifier and fmcw altimeterThe CW radar operates using continuous wave transmission, while the FMCW radar employs frequency-modulated continuous wave technology. Range measurement is a crucial aspect of radar systems, providing information about the distance to a target. The IF amplifier plays a key role in signal processing, amplifying intermediate frequency signals for further analysis. The FMCW altimeter utilizes frequency-modulated continuous wave technology to accurately measure altitude above a reference point.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
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Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
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Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
2. OBJECTIVES
At the end of this chapter, students should be able to:
1.Explain the static and dynamic characteristics of an
instrument.
2. Calculate and analyze the measurement error,
accuracy, precision and limiting error.
3. Describe the basic elements of electronic
instrument.
26. OVERVIEW
Types of Sensors and how they work
1. Liquid-in-glass thermometres
2. Bimaterial thermometres
3. Electrical thermometres
4. IR-thermometres
5. Pyrometres
7. Other measurement methods
Sensor Applications
Advantages and Disadvantages
29. Causes of inaccuracies / errors
Temperature
differences in the
liquid
Glass temperature
also affects
The amount of
immersion (vs.
calibration)
30. Bimetallic /Bimaterial Thermometres
Method based on different thermal expansions of
different metals
◦ Every metal expands more than other: twisting
◦ Inaccurary ± 1 ° C
◦ Industry, sauna thermometers
31. TYPES OF TEMPERATURE SENSORS
Thermocouples
Resistance
Temperature
Detectors (RTDs)
Thermistors
Infrared Sensors
Semiconductors
32. THERMOCOUPLES
Two wires of different
metal alloys.
Converts thermal
energy into electrical
energy.
Requires a temperature
difference between
measuring junction and
reference junction.
Easy to use and obtain.
35. THERMOCOUPLES
Simple, Rugged
High temperature
operation
Low cost
No resistance lead wire
problems
Point temperature
sensing
Fastest response to
temperature changes
Least stable, least
repeatable
Low sensitivity to small
temperature changes
Extension wire must be
of the same
thermocouple type
Wire may pick up
radiated electrical noise
if not shielded
Lowest accuracy
Advantages Disadvantages
36. RESISTANCE TEMPERATURE DETECTORS
(RTDS)
Wire wound and thin
film devices.
Nearly linear over a
wide range of
temperatures.
Can be made small
enough to have
response times of a
fraction of a second.
Require an electrical
current to produce a
voltage drop across the
sensor
37. RTD APPLICATIONS
Air conditioning and
refrigeration
servicing
Furnace servicing
Foodservice
processing
Medical research
Textile production
38. RTDS
Most stable over time
Most accurate
Most repeatable
temperature
measurement
Very resistant to
contamination/
corrosion of the RTD
element
High cost
Slowest response time
Low sensitivity to small
temperature changes
Sensitive to vibration
(strains the platinum
element wire)
Decalibration if used
beyond sensor’s
temperature ratings
Somewhat fragile
Advantages Disadvantages
39. THERMISTORS
A semiconductor used as a temperature sensor.
Mixture of metal oxides pressed into a bead, wafer
or other shape.
Beads can be very small, less than 1 mm in some
cases.
The resistance decreases as temperature increases,
negative temperature coefficient (NTC) thermistor.
40. THERMISTORS
Most are seen in
medical equipment
markets.
Thermistors are also
used are for engine
coolant, oil, and air
temperature
measurement in the
transportation
industry.
41. THERMISTORS
High sensitivity to small
temperature changes
Temperature
measurements become
more stable with use
Copper or nickel
extension wires can be
used
Limited temperature
range
Fragile
Some initial accuracy
“drift”
Decalibration if used
beyond the sensor’s
temperature ratings
Lack of standards for
replacement
Advantages Disadvantages
42. INFRARED SENSORS
An infrared sensor intercepts a portion of the infrared energy
radiated by an object.
Many types Optical Pyrometers, Radiation Pyrometers, Total
Radiation Pyrometers, Automatic Infrared Thermometers, Ear
Thermometers, Fiber optic Thermometers, Two-Color
Pyrometers, Infra-Snakes, and many more.
45. Thermal radiation
Every atom and molecule exists in perpetual motion
A moving charge is associated with an electric field and thus
becomes a radiator
This radiation can be used to determine object's temperature
Waves can be characterized by their intensities and wavelengths
◦ The hotter the object:
the shorter the wavelength
the more emitted light
46. INFRARED APPLICATIONS
Manufacturing process like
metals, glass, cement, ceramics,
semiconductors, plastics, paper,
textiles, coatings.
Automation and feedback
control
Improve safety in fire-fighting,
rescues and detection of
criminal activities.
Used to monitor and measure
human body temperatures with
one second time response.
Reliability and maintenance
needs from building heating to
electrical power generation and
distribution
47. INFRARED SENSORS
No contact with the
product required
Response times as fast
or faster than
thermocouples
No corrosion or
oxidation to affect
sensor accuracy
Good stability over time
High repeatability
High initial cost
More complex - support
electronics required
Emissivity variations
affect temperature
measurement accuracy
Field of view and spot
size may restrict sensor
application
Measuring accuracy
affected by dust,
smoke, background
radiation, etc.
Advantages Disadvantages
48. SEMICONDUCTORS
Are small and result from the fact that
semiconductor diodes have voltage-current
characteristics that are temperature sensitive.
Temperature measurement ranges that are small
compared to thermocouples and RTDs, but can be
quite accurate and inexpensive.
Applications
Hard Disk Drives
Personal Computers
Electronic Test Equipment
Office Equipment
Domestic Appliances
Process Control
Cellular Phones
49.
50.
51.
52.
53.
54.
55.
56.
57.
58. Types of Flow Measurement Technologies
• Variable Area (rotameters)
• Rotating Vane (paddle & turbine)
• Positive Displacement
• Differential Pressure
• Vortex Shedding
• Thermal Dispersion
• Magnetic Magnetic
• Thermal Mass
• Coriolis Mass
• Ultrasonic
59.
60. Some Facts About Variable Area
Flowmeters
• Called “float type float
type”, “rotameter’’, or
“variable area”
flowmeters.
• By far the most
common specified,
purchased, and
installed flowmeter in
the world
61. Variable Area Flowmeters
• Fluid flow moves the float
upward against gravity.
• Float will find equilibrium
when area around float
generates enough drag
equal to weight -
buoyancy.
• Some types have a guide
rod to keep float stable.
• Low Cost (pricing usually
starts < $50)
• Simple Reliable Design
• Can Measure Liquid or Gas
Flows
• Tolerates Dirty Liquids or
Solids in Liquid
62.
63. (1) End fitting — flange
shown;
(2) flowmeter body;
(3) rotation pickup —
magnetic,
reluctancetype shown;
(4) permanent magnet;
(5) pickup cold wound on
pole piece;
(6) rotor blade;
(7) rotor hub;
(8) Rotor shaft bearing —
journal type shown;
(9) rotor shaft;
(10)diffuser support and
flow straightener;
(11)diffuser;
(12) flow conditioning plate
(dotted) — optional
with some meters.
64. Electromagnetic Flowmeters
• Magnetic flowmeters have been widely used in
industry for many years.
• Unlike many other types of flowmeters, they offer
true noninvasive measurements.
• They are easy to install and use to the extent that
existing pipes in a process can be turned into
meters simply by adding external electrodes and
suitable magnets.
• They can measure reverse flows and are insensitive
to viscosity, density, and flow disturbances.
• Electromagnetic flowmeters can rapidly respond to
flow changes and they are linear devices for a wide
range of measurements.
• As in the case of many electric devices, the
underlying principle of the electromagnetic
flowmeter is Faraday’s law of electromagnetic
induction.
• The induced voltages in an electromagnetic
65. • As is the case in many applications, if the pipe walls are
made from nonconducting elements, then the induced
voltage is independent of the properties of the fluid.
• The accuracy of these meters can be as low as 0.25%
and, in most applications, an accuracy of 1% is used.
• At worst, 5% accuracy is obtained in some difficult
applications where impurities of liquids and the contact
resistances of the electrodes are inferior as in the case of
low-purity sodium liquid solutions.
• Faraday’s Law of Induction
• This law states that if a conductor of length l (m) is
moving with a velocity v (m/s–1), perpendicular to a
magnetic field of flux density B (Tesla), then the induced
voltage e across the ends of conductor can be expressed
by:
66. Ultrasonic Flowmeters
• There are various types of ultrasonic flowmeters
in use for discharge measurement:
• (1) Transit time: This is today’s state-of-the-art
technology and most widely used type.
• This type of ultrasonic flowmeter makes use of
the difference in the time for a sonic pulse to
travel a fixed distance.
• First against the flow and then in the direction of
flow.
• Transmit time flowmeters are sensitive to
suspended solids or air bubbles in the fluid.
• (2) Doppler: This type is more popular and less
expensive, but is not considered as accurate as
the transit time flowmeter.
• It makes use of the Doppler frequency shift
caused by sound reflected or scattered from
suspensions in the flow path and is therefore
more complementary than competitive to transit