Key Benefits and Advantages
Enhanced Process Media Isolation: The remote diaphragm seal serves as a robust barrier between the process fluid and the transmitter’s sensing element. Connected via fluid-filled capillaries, this system allows for accurate pressure measurement in applications where direct contact would cause clogging, corrosion, or heat damage to the sensor.
Minimized Installation and Infrastructure Costs: As a wireless device, the EJX438B significantly reduces the total cost of ownership by eliminating the need for hard-wiring, conduit, and cable trays. This is particularly beneficial for large-scale tank farms, offshore platforms, or hazardous areas where traditional wiring is difficult or unsafe to install.
Secure and Reliable Wireless Networking: Compliant with the ISA100.11a standard, the EJX438B provides secure, bi-directional communication. It transmits process variables as well as configuration parameters, ensuring that the device can be fully managed remotely within a secure industrial wireless ecosystem.
Ultra-Low Current Consumption: Engineered with a long-life battery design, the transmitter utilizes two high-capacity lithium-thionyl chloride batteries. This high-efficiency architecture allows the EJX438B to operate autonomously for several years, ensuring consistent data availability with minimal maintenance requirements.
Flexible Data Publishing Rates: The transmitter allows for selectable update times ranging from 0.5 seconds to 60 minutes. This allows operators to optimize the device for high-speed process control or for energy-saving bulk inventory monitoring, depending on the specific application needs.
Versatile Mounting Options: The diaphragm seal system allows the transmitter to be mounted at a distance from the process connection. This flexibility is ideal for measuring pressure in high-vibration areas or on elevated tanks where a local display needs to be positioned at eye level for maintenance teams.
Technical Properties
Operation: Wireless gauge pressure measurement with remote diaphragm seal isolation.
Wireless Protocol: ISA100.11a protocol specifications compliant.
Service: Measurement of Liquid, Gas, and Steam (Pressure, Level, Flow, and Density).
Power Source: Two high-capacity lithium-thionyl chloride (Li-SOCl2) batteries.
Update Time: Selectable from 0.5 seconds up to 60 minutes.
Configuration: Secure infrared (IR) configuration and wireless remote parameter management.
Seal Type: Remote diaphragm seal connected via capillaries.
Accuracy and Stability: Powered by Yokogawa’s DPharp silicon resonant sensor technology.
Field of Application
The EJX438B is the preferred choice for wireless gauge pressure measurement where process media must be isolated and hard-wiring is impractical.
Primary Industries and Uses:
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Refining and Petrochemical: Monitoring pressure and level in high-temperature distillation columns and asphalt storage tanks.
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Food and Beverage: Hygienic pressure monitoring in large mixing vessels and fermentation tanks where remote mounting is required.
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Oil and Gas: Tracking separator pressures and tank levels on remote, unmanned production sites.
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Chemical Manufacturing: Measuring pressure in reactors handling corrosive acids or polymers that solidify at ambient temperatures.
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Pharmaceutical: Managing pressure in vacuum drying and sterile evaporation processes with remote sensing needs.
