Review pekan 3

ditulis oleh Muhammad Fajri Shiddiq

Pengamatan Video

Video Pertama Pada video ini dijelaskan bahwa suatu sistem terbuka yang memiliki 2 katup di berikan tekanan awal melalui alat vacuum cleaner. Alat tersebut berfungsi untuk meniupkan fluida berupa gas. Pada ilustrasi berikut, percobaan dilakukan untuk menghitung perbedaan pada pangkal dan ujung rangkaian, serta pengaruh dari sebelum dan setelah katup 2 dibuka. Pengukuran tekananan pada video pertama dilakukan dengan memakai manometer analog.

Hasil dari pengamatan di dapat, sebelum katup 2 dibuka P1 = 10 milibar P2 = 1.5 milibar

setelah katup 2 dibuka P1' = 8.5 milibar P2' = 1.5 milibar

Video Kedua Rangkaian dan jenis percobaan yang dilakukan pada video kedua sama dengan yang pertama, namun perhitungan tekanan dilakukan dengan memakai pipa U

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Tugas Manometer

1. Manometer analog menggunakan mekanisme sederhana dan akurat untuk menentukan tekanan udara yang melibatkan perpindahan fluida. Air atau merkuri adalah zat alternatif yang dipilih untuk mengisi sebagian tabung berbentuk "U" yang dibiarkan terbuka di salah satu atau kedua ujungnya (tergantung jenisnya). Salah satu ujung tabung terhubung ke saluran gas untuk memasukkan tekanan. Saat diterapkan, tekanan memindahkan cairan, sekaligus memaksanya naik ke sisi lain 'U.' Hasilnya diukur pada skala, dan tingkat tekanan ditentukan.

2. Manometer tabung-U adalah alat pengukur tekanan yang paling sederhana. Namanya berasal dari bentuk U yang terbentuk ketika kedua ujung tabung fleksibel berisi cairan dinaikkan agar cairan tidak keluar dari ujungnya. Manometer tabung-U adalah keseimbangan 'cair'.

Neraca pegas yang digunakan di dapur menimbang beban dengan mencocokkan gaya yang dihasilkan oleh berat beban dengan gaya yang dihasilkan dari tegangan pegas keseimbangan. Perubahan panjang pegas adalah ukuran berat beban dan ditunjukkan pada skala bertahap dengan penunjuk yang terpasang pada pegas. Demikian pula, manometer tabung-U digunakan untuk menyeimbangkan berat cairan di satu kaki 'U' terhadap tekanan yang dimasukkan ke kaki lainnya. Perbedaan ketinggian antara kedua kaki cairan menunjukkan tekanan yang mendorong cairan ke bawah satu kaki dan ke atas kaki lainnya. Perbedaan ketinggian diukur pada skala bertingkat.

3. P1 = 10 milibar P2 = 1,5 milibar

4. Beberapa faktor yang memengaruhi besarnya tekanan adalah - ketinggian - temperatur - volume - gravitasi - komposisi gas dan liduid - kecepatan fluida - gaya eksternal

5. Satuan tekanan udara pada manometer = milibar = 100 Pa

Sehingga jika dilakukan konversi, 1 milibar = 100 Pa

6. Dari pengamatan, perbandingan antara sebelum dan setelah katup 2 terbuka adalah P1 = 10 mbar dan P2 = 1.5 mbar ----- Skala tekanan P1 : P2 = 10 : 1,5 = 20 : 3

P1' = 8,5 mbar menjadi 1,5 mbar ---- Skala = 8.5 : 1,5 = 17 : 3

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Pertanyaan dengan chat gpt seputar manometer

what is the most effective manometer The effectiveness of a manometer depends on the specific application and the requirements of the measurement. However, some common types of manometers and their effectiveness in different scenarios are:

U-tube manometer: This is a simple and inexpensive manometer that is effective for measuring small pressure differences in low-pressure applications. However, it may not be suitable for high-pressure applications as it can be difficult to read accurately.

Inclined manometer: This type of manometer is effective for measuring pressure differences in pipes and ducts where space is limited. It uses a tube that is inclined at a specific angle, which makes it easier to read the pressure difference compared to a U-tube manometer.

Digital manometer: Digital manometers are highly accurate and provide precise readings of pressure differences. They are easy to read and offer a range of units of measure. They are suitable for both low-pressure and high-pressure applications and are often used in laboratory settings.

Differential pressure transducer: This is a highly accurate and reliable manometer that is suitable for measuring pressure differences in critical applications. It uses advanced sensors and electronics to provide precise and stable measurements, and can be configured for a wide range of pressure ranges and output signals. It is often used in industrial applications and in the process control industry.

Overall, the most effective manometer for a specific application depends on factors such as the required accuracy, pressure range, type of fluid being measured, and the available space for the instrument.

when should we use manometer or barometer

Manometers and barometers are both devices used to measure pressure, but they are used for different purposes.

A manometer is typically used to measure the pressure difference between two points in a fluid system, such as the pressure drop across a filter or the pressure difference between two rooms in a building. Manometers can be simple, inexpensive devices such as a U-tube manometer or more complex, digital instruments that offer greater accuracy and precision.

On the other hand, a barometer is used to measure atmospheric pressure. It is commonly used in weather forecasting and to determine altitude. Barometers are usually designed to be highly sensitive and accurate to detect even small changes in atmospheric pressure.

So, when deciding whether to use a manometer or barometer, it is important to consider what type of pressure is being measured. If you need to measure the pressure difference between two points in a fluid system, a manometer is the appropriate instrument. If you need to measure atmospheric pressure, a barometer is the appropriate instrument.

what is the most effective instrument for fluid pressure measurement The most effective instrument for fluid pressure measurement depends on the specific requirements of the application. However, some commonly used instruments for fluid pressure measurement are:

Bourdon tube pressure gauge: This is a widely used instrument for measuring fluid pressure in various industries. It is simple, reliable, and suitable for measuring pressure ranges from vacuum to high pressure.

Diaphragm pressure gauge: This type of pressure gauge uses a flexible diaphragm to measure fluid pressure. It is suitable for measuring low to medium pressure and can handle corrosive and viscous fluids.

Differential pressure transducer: This is a highly accurate instrument that is commonly used in critical applications. It uses advanced sensors and electronics to measure pressure differences in fluid systems, and can be configured for a wide range of pressure ranges and output signals.

Digital pressure gauge: This type of gauge provides precise and accurate measurements of fluid pressure. It can be used to measure both low and high pressures, and can be configured to provide a range of output signals and units of measure.

Overall, the choice of the most effective instrument for fluid pressure measurement depends on factors such as the required accuracy, pressure range, type of fluid being measured, and the specific application requirements. It is important to carefully consider these factors when selecting an instrument for fluid pressure measurement.

what is the most effective instrument of pressure measurement for each application? The most effective instrument of pressure measurement for each application depends on various factors, such as the required accuracy, pressure range, type of fluid, and the specific application requirements. However, here are some examples of commonly used pressure measuring instruments for different applications:

Industrial applications: Bourdon tube pressure gauges are commonly used for measuring fluid pressure in industrial applications due to their durability, reliability, and wide range of pressure measurement capability.

Medical applications: Electronic pressure transducers are commonly used in medical applications, such as blood pressure measurement, due to their high accuracy and precision.

Laboratory applications: Digital pressure gauges are widely used in laboratory applications due to their accuracy, ease of use, and ability to provide a range of output signals and units of measure.

Aerospace applications: Piezoresistive pressure sensors are commonly used in aerospace applications due to their ability to operate at high temperatures and high pressures.

HVAC applications: Diaphragm pressure gauges are commonly used in HVAC applications, such as measuring pressure drop across filters and ductwork, due to their ability to handle corrosive and viscous fluids.

Automotive applications: Strain gauge pressure sensors are commonly used in automotive applications, such as measuring fuel and oil pressure, due to their high accuracy and reliability.

Overall, it is important to consider the specific requirements of the application when selecting the most effective instrument for pressure measurement.