基本细节:ETP90H-4G50 变送器 该传感器与压力传感器相连接通过毛细管和隔膜
ETP90H-4G50是一个变送器系列，具有广泛的过程连接，以适应大多数应用。该变送器可以测量液体，气体和
蒸汽。
ETP90H-4G50耐过载。对于大多数压力范围，变送器可以
过载至少是最高压力范围值的三倍，并且用于短时间的压力波动
甚至更多。
ETP90H-4G50直接连接介质，不需要压力介质。这
消除了通常与压力介质有关的问题，例如温度
漂移。由于ETP90不使用压力介质，温度影响非常低。ETP90是
温度和长期稳定。
ETP90H-4G50设计用于2线连接4-20 mA。ETP90H也有hart通信。
ETP90H-4G50具有Profibus paccommunication和ETP90FFFoundation现场总线。
ETP90使用了一个压阻式压力传感器，该传感器与压力传感器相连接通过毛细管和隔膜。媒体的压力适用于隔膜是通过硅油转移到压力传感器。石油完全填满口腔传感器，毛细管和隔膜上方的空腔。这也就是说隔膜运动非常小压力的变化。毛细血管管保护压力瞬态压力传感器激增。
确保传感器具有正确的参考压力背面连接到环境大气压力通过管道，为使空气流通而设计的“冷表面”最接近压力连接发射机。室内潮湿吗?空气会在上面凝结表面。
ETP90H-4G50
The ETP90H-4G50 is a transmitter family with a wide range of process connections to suit most applications. The transmitter can measure liquids, gases and
Steam.
ETP90H-4G50 is resistant to overload. For most pressure ranges, a transmitter can
The overload is at least three times the value of the highest pressure range and is used for short periods of pressure fluctuations
And even more.
The ETP90H-4G50 is directly connected to the media and does not require pressure media. this
Eliminates problems normally associated with pressure media, such as temperature
Drift. Since the ETP90 does not use pressure media, the temperature impact is very low. ETP90 is
Temperature and long-term stability.
The ETP90H-4G50 is designed for 2-wire connections between 4-20 mA. ETP90H also has hart communication.
The ETP90H-4G50 has Profibus paccommunication and ETP90FFFoundation fieldbuses.
The ETP90 uses a piezoresistive pressure sensor that is connected to a pressure sensor through a capillary and diaphragm. The pressure of the media applied to the diaphragm is transferred to the pressure sensor by silicone oil. The oil completely fills the cavity above the mouth sensor, capillaries and diaphragm. This means that the diaphragm moves with very little pressure change. Capillary tube protective pressure transient pressure sensor surges.
Ensure that the sensor has the correct reference pressure on the back side connected to the ambient atmospheric pressure through the duct, the “cold surface” designed to allow air circulation is closest to the pressure connected transmitter. Is the room damp? The air will condense on the surface.
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