Yokogawa EJX438B
Wireless Gauge Pressure Transmitter with Remote Diaphragm Seals
Segel diafragma digunakan untuk mencegah media proses masuk langsung ke dalam rakitan penginderaan tekanan dari pemancar tekanan dan tekanan diferensial, keduanya dihubungkan ke pemancar menggunakan kapiler yang diisi dengan cairan pengisi.
Pemancar Tekanan Diferensial Tertutup Diafragma EJX118B dan Pemancar Tekanan Pengukur Tertutup Diafragma EJX438B dapat digunakan untuk mengukur aliran cairan, gas, atau uap, serta level cairan, kepadatan, dan tekanan.
EJX118B dan EJX438B tidak hanya mengirimkan variabel proses tetapi juga parameter pengaturan menggunakan sinyal nirkabel.
Dalam kasus tipe bertenaga baterai, pemancar bekerja dengan baterai internal, dan biaya pemasangan dapat dikurangi karena tidak memerlukan kabel keras.
Protokol komunikasi mematuhi spesifikasi protokol ISA100.11a.
About OpreX™
OpreX™ is the comprehensive brand for Yokogawa’s industrial automation (IA) and control business and stands for excellence in the related technology and solutions.
It consists of categories and families under each category. This product belongs to the OpreX™ Field Instruments family that is aligned under the OpreX™ Measurement category.
Span and Range Limits
| Measurement Span and Range | MPa | psi (/D1) | bar (/D2) | kgf/cm2 (/D3) | ||
| A*1 | Span | 0.035 to 3.5 | 5 to 500 | 0.35 to 35 | 0.35 to 35 | |
| Range | –0.1 to 3.5 | –14.5 to 500 | –1 to 35 | –1 to 35 | ||
|
B |
Flush type*1 | Span | 0.16 to 16 | 23 to 2300 | 1.6 to 160 | 1.6 to 160 |
| Range | –0.1 to 16 | –14.5 to 2300 | –1 to 160 | –1 to 160 | ||
| Extended
type*1 |
Span | 0.16 to 7 | 23 to 1000 | 1.6 to 70 | 1.6 to 70 | |
| Range | –0.1 to 7 | –14.5 to 1000 | –1 to 70 | –1 to 70 | ||
Reference Accuracy of Calibrated Span
| Measurement span | A | B | |
| Reference accuracy | X ≤ span | ±0.15% of Span | |
| X > span | ±(0.1+0.005 URL/Span)% of Span | ||
| X | 0.35 MPa
(50 psi) |
1.6 MPa (230 psi) | |
| URL (upper range limit) | 3.5 MPa (500 psi) | 16 MPa (2300 psi) | |
Process temperature, Ambient temperature, and Working pressure
| Code | Process temperature*1 | Ambient temperature*2 | Working pressure | Specific gravity*3 | |
| Silicone oil (general use) | A | –10 to 250°C *4
(14 to 482°F) |
–10 to 60°C (14 to 140°F) |
2.7 kPa abs (0.38 psi abs) to flange rating pressure |
1.07 |
| Silicone oil (general use) | B | –30 to 180°C (–22 to 356°F) | –15 to 60°C (5 to 140°F) | 0.94 | |
| Silicone oil
(high temperature use) |
C | 10 to 310°C (50 to 590°F) | 10 to 60°C (50 to 140°F) | 1.09 | |
| Fluorinated oil
(oil-prohibited use) |
D |
–20 to 120°C (–4 to 248°F) | –10 to 60°C (14 to 140°F) | 51 kPa abs (7.4 psi abs) to
flange rating pressure |
1.90 to 1.92 |
| Ethylene glycol
(low temperature use) |
E |
–50 to 100°C (–58 to 212°F) | –40 to 60°C (–40 to 140°F) | 100 kPa abs (atmospheric pressure)
to flange pressure rating |
1.90 |
PT Totalitas Teknik Indonesia
PT Totalitas Teknik Indonesia
PT Totalitas Teknik Indonesia
