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E-mail
sycif@cycif.com.cn
- Phone
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Address
Yexie Industrial Zone, Songjiang, Shanghai
Shanghai Yichuan Instrument Factory
sycif@cycif.com.cn
Yexie Industrial Zone, Songjiang, Shanghai
The EJA440A high-performance pressure transmitter can be used to measure the pressure of liquids, gases, or vapors, and then convert it into a 4-20mA DC current signal output.
The EJA series supports BRAN, HART, and FOUNDATION ™ Fieldbus or PROFIBUS PA communication protocol.
feature
Excellent performance and stability
The EJA series adopts monocrystalline silicon resonant sensor technology. Monocrystalline silicon does not exhibit hysteresis in response to changes in pressure or temperature, making it an ideal material. Monocrystalline silicon resonant sensors minimize the effects of overvoltage, temperature changes, and static pressure, providing unparalleled long-term stability.
Small and lightweight design
Due to the use of ASIC amplifier design to reduce packaging size, as well as the miniaturization of membrane box structure and flanges, the weight of this model has been reduced to half of the original model. ASIC design not only reduces the number of parts, but also improves the reliability of the amplifier.
Fieldbus communication capability
Fieldbus is a bidirectional digital communication system, an innovative technology for configuring instrument control systems, and also a promising replacement product for the widely used standard 4-20mA analog communication in field instruments.
The EJA series offers two fieldbus modes, FOUNDATION ™ Fieldbus low-voltage mode and PROFIBUS PA equipment are used to achieve collaborative work between Yokogawa Electric and other suppliers. In terms of software, the EJA series uses two AI function blocks to calculate differential pressure and static pressure, thereby achieving flexible instrument configuration.
Specifications
| EJA440A pressure transmitter | |||
| C membrane box | D membrane box | ||
| measurement range | -0.1~32MPa (-15~4500psi) |
-0.1~50MPa (-15~7200psi) |
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| Measurement range | 5~32MPa (720~4500psi) |
5~50MPa (720~7200psi) |
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| precision | ±0.12% | ±0.12% | |
| Protection level | IP67,NEMA 4X, And JIS C0920 immersion proof type | ||
| Explosion proof specifications | FM,CENELEC ATEX,CSA,IECEx | ||
| output signal | 4~20mA DC or FOUNDATION ™ Fieldbus or PROFIBUS PA two-wire digital communication | ||
| power supply | BRAN and HART: 10.5~42V DC (intrinsic safety type: 10.5~30V DC) Fieldbus: 9~32V DC (Intrinsic Safety Entity Mode 9~24V DC, Intrinsic Safety FISCO Mode 9~17.5V DC) |
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| ambient temperature | -40-85 ℃ (-40~185 ℃) (ordinary type) -30~80 ℃ (-22~176 ℃) (internal indicator) |
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| process temperature | -40-120 ℃ (-40~248 ℃) (ordinary type) | ||
| Maximum overvoltage | 48MPa (6750psig) | 60MPa (8500psig) | |
| install | 2-inch pipe installation | ||
| Material of liquid receiving components | Capsule | SUS316L (diaphragm: Hastelloy C-276) | |
| Container flange | SUS316 | ||
| shell | Aluminum alloy or SUS316 stainless steel (optional) | ||