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The electrodes are wetted parts and
The electrodes are wetted parts and are also used to excitation and detection of signals to determine the variation of the electrical properties in the multiphase flow. Signal variations detected on these electrodes are in addition used in cross correlation algorithms that determine the gas velocity.
The signals generated by the electrodes are also used for advanced signal processing used when the meter operates in non-Gamma modus to determine the gas- and liquid fractions.
The DP26 electrode mechanical design has no internal wires or soldering points from process to atmosphere. Each electrode bolt has a pressure barrier design. These bolts are connected with wires to a common impedance electronic board and this allows for seamless switching between capacitive mode and conductance mode when the flow changes from oil to water – continuous and vice versa (see Figure 16).
DP26 electrode geometry allows for measurements in separate sectors in addition to the full cross sectional area. This introduce the possibility to measure a large number of different combinations with near-wall-measurement, rotational measurement and traditional bulk-measurement, enabling a significant more detailed fraction measurement.
The principle of the impedance method for phase fraction measurements is used to characterize the electrical properties of the fluid passing through the sensor. By measuring the electrical impedance using the contact electrodes; the fluid mixture permittivity and fluid mixture conductivity are found and through advanced signal processing and verification each phase fraction and velocity is determined.
Figure 17
The capacitance mode is mainly active when the fluid mixture is in oil-continuous state, meaning the fluid mixture acts as an electrical insulator.
The conductance mode is mainly active when the fluid mixture is in water-continuous state, meaning the fluid mixture acts as an electrical conductor.
The switching between these two modes is as mentioned above seamless, fully automatic and occurs at extremely high speed. The two different levels in the electrode configuration allows for cross correlation of the electrical signals from the upstream to the downstream level. By performing a statistical cross-correlation method, the velocity of the gas flow is found.
This will be discussed in more detail in section 8 - Principle of operation (see Figure 17
The signals generated by the electrodes are also used for advanced signal processing used when the meter operates in non-Gamma modus to determine the gas- and liquid fractions.
The DP26 electrode mechanical design has no internal wires or soldering points from process to atmosphere. Each electrode bolt has a pressure barrier design. These bolts are connected with wires to a common impedance electronic board and this allows for seamless switching between capacitive mode and conductance mode when the flow changes from oil to water – continuous and vice versa (see Figure 16).
DP26 electrode geometry allows for measurements in separate sectors in addition to the full cross sectional area. This introduce the possibility to measure a large number of different combinations with near-wall-measurement, rotational measurement and traditional bulk-measurement, enabling a significant more detailed fraction measurement.
The principle of the impedance method for phase fraction measurements is used to characterize the electrical properties of the fluid passing through the sensor. By measuring the electrical impedance using the contact electrodes; the fluid mixture permittivity and fluid mixture conductivity are found and through advanced signal processing and verification each phase fraction and velocity is determined.
Figure 17
The capacitance mode is mainly active when the fluid mixture is in oil-continuous state, meaning the fluid mixture acts as an electrical insulator.
The conductance mode is mainly active when the fluid mixture is in water-continuous state, meaning the fluid mixture acts as an electrical conductor.
The switching between these two modes is as mentioned above seamless, fully automatic and occurs at extremely high speed. The two different levels in the electrode configuration allows for cross correlation of the electrical signals from the upstream to the downstream level. By performing a statistical cross-correlation method, the velocity of the gas flow is found.
This will be discussed in more detail in section 8 - Principle of operation (see Figure 17
0/5000
Elektroda adalah bagian dibasahi dan juga digunakan untuk eksitasi dan deteksi sinyal untuk menentukan variasi dari sifat-sifat listrik dalam aliran multifase. Variasi sinyal terdeteksi pada elektroda ini selain digunakan dalam salib algoritma korelasi yang menentukan kecepatan gas.
Sinyal yang dihasilkan oleh elektroda juga digunakan untuk pemrosesan sinyal lanjut digunakan ketika meteran beroperasi dalam modus bebas-Gamma untuk menentukan gas dan cairan pecahan.
The DP26 elektroda desain mekanik tidak memiliki kabel internal atau solder poin dari proses ke atmosfer. Baut elektroda masing-masing memiliki desain penghalang tekanan. Baut ini terhubung dengan kabel untuk papan elektronik impedansi Umum dan ini memungkinkan untuk mulus beralih antara modus kapasitif dan aliran modus ketika arus perubahan dari minyak ke air-terus-menerus dan sebaliknya (Lihat gambar 16).
DP26 elektroda geometri memungkinkan untuk pengukuran di terpisah sektor selain dengan penuh salib luas penampang. Ini memperkenalkan kemungkinan untuk mengukur sejumlah besar kombinasi yang berbeda dengan dekat-dinding-pengukuran, rotasi pengukuran dan massal-pengukuran tradisional, memungkinkan signifikan lebih rinci fraksi pengukuran.
prinsip impedansi metode untuk fase fraksi pengukuran digunakan untuk mengkarakterisasi sifat-sifat listrik cairan melewati sensor. Dengan mengukur impedansi menggunakan elektroda kontak; dielektrik cairan campuran dan campuran cairan konduktivitas yang ditemukan dan melalui pemrosesan sinyal lanjut dan verifikasi setiap fase fraksi dan kecepatan ditentukan.
gambar 17
modus kapasitansi terutama aktif ketika campuran cairan dalam keadaan minyak-terus-menerus, berarti campuran cairan bertindak sebagai isolator listrik.
modus aliran terutama aktif ketika campuran cairan dalam air-terus-menerus, berarti campuran cairan bertindak sebagai konduktor listrik.
beralih antara kedua mode tersebut adalah sebagaimana disebutkan di atas mulus, sepenuhnya otomatis dan terjadi pada kecepatan sangat tinggi. Dua tingkatan yang berbeda dalam konfigurasi elektroda memungkinkan untuk salib korelasi sinyal-sinyal listrik dari hulu ke hilir tingkat. Dengan melakukan cross-korelasi metode statistik, kecepatan aliran gas ditemukan.
ini akan dibahas secara lebih rinci dalam bagian 8 - prinsip operasi (Lihat gambar 17
Sinyal yang dihasilkan oleh elektroda juga digunakan untuk pemrosesan sinyal lanjut digunakan ketika meteran beroperasi dalam modus bebas-Gamma untuk menentukan gas dan cairan pecahan.
The DP26 elektroda desain mekanik tidak memiliki kabel internal atau solder poin dari proses ke atmosfer. Baut elektroda masing-masing memiliki desain penghalang tekanan. Baut ini terhubung dengan kabel untuk papan elektronik impedansi Umum dan ini memungkinkan untuk mulus beralih antara modus kapasitif dan aliran modus ketika arus perubahan dari minyak ke air-terus-menerus dan sebaliknya (Lihat gambar 16).
DP26 elektroda geometri memungkinkan untuk pengukuran di terpisah sektor selain dengan penuh salib luas penampang. Ini memperkenalkan kemungkinan untuk mengukur sejumlah besar kombinasi yang berbeda dengan dekat-dinding-pengukuran, rotasi pengukuran dan massal-pengukuran tradisional, memungkinkan signifikan lebih rinci fraksi pengukuran.
prinsip impedansi metode untuk fase fraksi pengukuran digunakan untuk mengkarakterisasi sifat-sifat listrik cairan melewati sensor. Dengan mengukur impedansi menggunakan elektroda kontak; dielektrik cairan campuran dan campuran cairan konduktivitas yang ditemukan dan melalui pemrosesan sinyal lanjut dan verifikasi setiap fase fraksi dan kecepatan ditentukan.
gambar 17
modus kapasitansi terutama aktif ketika campuran cairan dalam keadaan minyak-terus-menerus, berarti campuran cairan bertindak sebagai isolator listrik.
modus aliran terutama aktif ketika campuran cairan dalam air-terus-menerus, berarti campuran cairan bertindak sebagai konduktor listrik.
beralih antara kedua mode tersebut adalah sebagaimana disebutkan di atas mulus, sepenuhnya otomatis dan terjadi pada kecepatan sangat tinggi. Dua tingkatan yang berbeda dalam konfigurasi elektroda memungkinkan untuk salib korelasi sinyal-sinyal listrik dari hulu ke hilir tingkat. Dengan melakukan cross-korelasi metode statistik, kecepatan aliran gas ditemukan.
ini akan dibahas secara lebih rinci dalam bagian 8 - prinsip operasi (Lihat gambar 17
Sedang diterjemahkan, harap tunggu..
The electrodes are wetted parts and are also used to excitation and detection of signals to determine the variation of the electrical properties in the multiphase flow. Signal variations detected on these electrodes are in addition used in cross correlation algorithms that determine the gas velocity.
The signals generated by the electrodes are also used for advanced signal processing used when the meter operates in non-Gamma modus to determine the gas- and liquid fractions.
The DP26 electrode mechanical design has no internal wires or soldering points from process to atmosphere. Each electrode bolt has a pressure barrier design. These bolts are connected with wires to a common impedance electronic board and this allows for seamless switching between capacitive mode and conductance mode when the flow changes from oil to water – continuous and vice versa (see Figure 16).
DP26 electrode geometry allows for measurements in separate sectors in addition to the full cross sectional area. This introduce the possibility to measure a large number of different combinations with near-wall-measurement, rotational measurement and traditional bulk-measurement, enabling a significant more detailed fraction measurement.
The principle of the impedance method for phase fraction measurements is used to characterize the electrical properties of the fluid passing through the sensor. By measuring the electrical impedance using the contact electrodes; the fluid mixture permittivity and fluid mixture conductivity are found and through advanced signal processing and verification each phase fraction and velocity is determined.
Figure 17
The capacitance mode is mainly active when the fluid mixture is in oil-continuous state, meaning the fluid mixture acts as an electrical insulator.
The conductance mode is mainly active when the fluid mixture is in water-continuous state, meaning the fluid mixture acts as an electrical conductor.
The switching between these two modes is as mentioned above seamless, fully automatic and occurs at extremely high speed. The two different levels in the electrode configuration allows for cross correlation of the electrical signals from the upstream to the downstream level. By performing a statistical cross-correlation method, the velocity of the gas flow is found.
This will be discussed in more detail in section 8 - Principle of operation (see Figure 17
The signals generated by the electrodes are also used for advanced signal processing used when the meter operates in non-Gamma modus to determine the gas- and liquid fractions.
The DP26 electrode mechanical design has no internal wires or soldering points from process to atmosphere. Each electrode bolt has a pressure barrier design. These bolts are connected with wires to a common impedance electronic board and this allows for seamless switching between capacitive mode and conductance mode when the flow changes from oil to water – continuous and vice versa (see Figure 16).
DP26 electrode geometry allows for measurements in separate sectors in addition to the full cross sectional area. This introduce the possibility to measure a large number of different combinations with near-wall-measurement, rotational measurement and traditional bulk-measurement, enabling a significant more detailed fraction measurement.
The principle of the impedance method for phase fraction measurements is used to characterize the electrical properties of the fluid passing through the sensor. By measuring the electrical impedance using the contact electrodes; the fluid mixture permittivity and fluid mixture conductivity are found and through advanced signal processing and verification each phase fraction and velocity is determined.
Figure 17
The capacitance mode is mainly active when the fluid mixture is in oil-continuous state, meaning the fluid mixture acts as an electrical insulator.
The conductance mode is mainly active when the fluid mixture is in water-continuous state, meaning the fluid mixture acts as an electrical conductor.
The switching between these two modes is as mentioned above seamless, fully automatic and occurs at extremely high speed. The two different levels in the electrode configuration allows for cross correlation of the electrical signals from the upstream to the downstream level. By performing a statistical cross-correlation method, the velocity of the gas flow is found.
This will be discussed in more detail in section 8 - Principle of operation (see Figure 17
Sedang diterjemahkan, harap tunggu..
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