Wireless Absolute Pressure Measurement in an In-Line Design
The Yokogawa EJX510B is an in-line mount absolute pressure transmitter developed for industrial applications where accurate pressure monitoring is required without the constraints of conventional signal wiring.
It uses a single-crystal silicon resonant sensor and is designed to measure the absolute pressure of liquids, gases, and steam. Process variables and transmitter setting parameters can be transmitted through the wireless network, providing both measurement data and device information without conventional hard-wiring.
Why Choose a Wireless Absolute Pressure Transmitter?
The main advantage of the EJX510B is not simply its pressure measurement capability, but the way it can be integrated into a plant.
Wireless installation can be particularly useful when:
- New signal cables are difficult or expensive to install
- Measurement points are located far from existing control infrastructure
- Additional pressure monitoring points need to be added to an existing plant
- Cabling and associated installation work need to be minimized
- Temporary or distributed process monitoring is required
Yokogawa specifically notes that the internal battery-powered design can reduce installation costs because hard-wiring is not required.
ISA100.11a Wireless Communication
The EJX510B communicates according to the ISA100.11a industrial wireless standard. It can transmit both measured process variables and setting parameters through the wireless network.
Wireless network configuration and parameter setting are supported through infrared communication between devices, helping simplify commissioning and configuration.
Long-Life Battery Design
The transmitter uses a low-current design with two high-capacity lithium-thionyl chloride batteries. This allows the EJX510B to operate wirelessly for extended periods without a conventional wired power connection to the transmitter.
Flexible Wireless Update Time
The process value update interval can be selected from 0.5 seconds to 60 minutes.
This allows the transmitter to be configured according to the monitoring requirement. Faster updates can be used when more responsive process monitoring is required, while longer intervals can be suitable for applications focused on general condition monitoring and reduced wireless power consumption.
Key Features
- In-line mount absolute pressure measurement
- Single-crystal silicon resonant sensor
- Suitable for liquid, gas, and steam pressure measurement
- ISA100.11a wireless communication
- Internal battery-powered operation
- Two high-capacity lithium-thionyl chloride batteries
- Wireless transmission of process variables and setting parameters
- Infrared communication for network configuration and parameter setting
- Selectable wireless update time from 0.5 seconds to 60 minutes
- Designed to reduce conventional hard-wiring requirements
- Yokogawa DPharp pressure measurement technology
Typical Applications
The EJX510B can be used for distributed wireless pressure monitoring in industries such as:
- Oil and gas
- Chemical and petrochemical
- Power generation
- Water and wastewater treatment
- Process manufacturing
- Tank and storage monitoring
- Distributed plant pressure monitoring
Yokogawa provides application examples including gas well monitoring, chemical plants, water treatment plants, diesel tank monitoring, and flow/pressure monitoring using wireless instrumentation.
FAQ
What does the EJX510B measure?
The EJX510B is an absolute pressure transmitter designed to measure the pressure of liquids, gases, and steam.
What is the main difference between the EJX510B and EJX530B?
The EJX510B is designed for absolute pressure measurement, while the EJX530B is the corresponding gauge pressure model. Both are wireless in-line mount transmitters using the same general wireless platform.
Is the EJX510B a wireless pressure transmitter?
Yes. The EJX510B is a wireless absolute pressure transmitter using ISA100.11a communication. It can transmit process variables and setting parameters wirelessly.
Does the EJX510B require signal cables?
The transmitter operates from internal batteries, and Yokogawa states that hard-wiring is not required for the transmitter. This can significantly simplify installation where conventional cabling is difficult.
How often can the EJX510B update its measurement?
The wireless update time is selectable from 0.5 seconds to 60 minutes, allowing the transmitter to be configured for different monitoring requirements.
What type of battery does the EJX510B use?
The EJX510B uses two high-capacity lithium-thionyl chloride batteries as part of its low-power wireless design.
Why choose an absolute pressure transmitter instead of a gauge pressure transmitter?
Absolute pressure is referenced to an absolute vacuum, so it is useful when the process measurement must remain independent of changes in atmospheric pressure. For applications where pressure relative to the surrounding atmosphere is required, the EJX530B gauge pressure model may be more appropriate.
Is the EJX510B suitable for plant retrofit projects?
Yes. Its wireless architecture can be useful when adding new pressure measurement points to existing facilities where installing new signal cables would involve significant construction work or cost. Yokogawa also provides application examples for distributed wireless monitoring in existing industrial environments.
Is documentation available for the EJX510B?
Yes. Yokogawa's official product page provides brochures, instruction manuals, general specifications, software, drawings, and an RE Declaration of Conformity for the EJX510B.
