Wireless Gauge Pressure Measurement with In-Line Mounting
The Yokogawa EJX530B is a wireless in-line mount gauge pressure transmitter designed for industrial pressure monitoring where reliable measurement and reduced cabling are important.
It uses a single-crystal silicon resonant sensor to measure gauge pressure in liquids, gases, and steam. In addition to process variables, the transmitter can wirelessly transmit setting parameters, allowing measurement and device information to be integrated into an ISA100.11a wireless network.
What Makes the EJX530B Different?
The main advantage of the EJX530B is the combination of gauge pressure measurement and wireless installation in an in-line transmitter.
Gauge pressure is referenced to local atmospheric pressure, making it suitable for applications such as pipe line pressure, open tank level, and tank blanket pressure.
The wireless configuration is particularly useful when adding or expanding measurement points without installing conventional signal cables.
Why Use Wireless Pressure Measurement?
The EJX530B can help simplify installation in situations where conventional cabling is difficult, expensive, or inconvenient.
Typical reasons to consider a wireless configuration include:
- Adding new pressure monitoring points to an existing plant
- Long distances between field instruments and control systems
- Areas where new signal cable installation requires significant construction work
- Rotating or frequently moved equipment
- Distributed monitoring points
- Applications where reducing cabling and associated maintenance is beneficial
Yokogawa provides application examples covering offshore gas well monitoring, chemical plants, water treatment, gas wells, rotating equipment, and distributed pressure monitoring.
ISA100.11a Wireless Communication
The EJX530B uses ISA100.11a-compliant wireless communication.
It can transmit both measured process variables and transmitter setting parameters through the wireless network. Infrared communication between devices is used for wireless network configuration and parameter setting.
This makes the EJX530B suitable for industrial wireless architectures where pressure measurements need to be collected from multiple distributed field locations.
Long-Life Battery Design
The EJX530B uses an ultra-low-current design with two high-capacity lithium-thionyl chloride batteries.
Because the transmitter operates from its internal batteries, conventional hard-wiring to the transmitter is not required. This can reduce installation work and make wireless pressure measurement more practical for locations where cabling is difficult.
Flexible Wireless Update Time
The measured process value can be published wirelessly at selectable intervals from 0.5 seconds to 60 minutes.
This allows the update interval to be matched to the application. Faster updates can be selected for more responsive monitoring, while longer intervals can be suitable for applications where continuous high-frequency updates are unnecessary.
Key Features
- Wireless in-line mount gauge pressure transmitter
- Single-crystal silicon resonant sensor
- Suitable for liquid, gas, and steam pressure measurement
- ISA100.11a-compliant 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
- Reduced hard-wiring requirements
- Yokogawa DPharp sensor technology
Typical Applications
The EJX530B is suitable for distributed gauge pressure monitoring in applications such as:
- Oil and gas facilities
- Chemical and petrochemical plants
- Water and wastewater treatment
- Power and utility systems
- Process manufacturing
- Gas well pressure monitoring
- Pipeline and process line pressure monitoring
- Tank pressure and blanket pressure monitoring
- Rotating equipment and mobile test equipment
Yokogawa's official application examples include offshore gas well monitoring, chemical reactor monitoring, water treatment, gas wells, rotating dryers, and pressure monitoring in chemical plants.
FAQ
What does the EJX530B measure?
The EJX530B measures gauge pressure, which compares process pressure with local atmospheric pressure. It is suitable for measuring the pressure of liquids, gases, and steam.
What is the difference between gauge pressure and absolute pressure?
Gauge pressure is referenced to local atmospheric pressure, while absolute pressure is referenced to an absolute vacuum.
For example, EJX530B is intended for gauge pressure measurement, while EJX510B is the corresponding wireless in-line mount model for absolute pressure measurement.
Is the EJX530B a wireless transmitter?
Yes. The EJX530B uses ISA100.11a wireless communication to transmit process variables and setting parameters.
Does the EJX530B need a signal cable?
No conventional hard-wiring to the transmitter is required. The EJX530B operates from internal batteries and communicates wirelessly, which can simplify installation where signal cabling is difficult.
How often does the EJX530B transmit pressure data?
The wireless update time can be selected from 0.5 seconds to 60 minutes. The appropriate interval depends on how quickly the process needs to be monitored.
What batteries does the EJX530B use?
The transmitter uses two high-capacity lithium-thionyl chloride batteries in its low-power wireless design.
What is the difference between the EJX530B and EJX510B?
The key measurement difference is:
- EJX530B: Wireless gauge pressure
- EJX510B: Wireless absolute pressure
Both are in-line mount wireless pressure transmitters and use the same general ISA100.11a wireless platform.
What is the difference between the EJX530B and EJX430B?
Both measure gauge pressure wirelessly, but their mounting configuration is different.
The EJX530B is an in-line mount gauge pressure transmitter, while the EJX430B is a traditional-mount wireless gauge pressure transmitter. The choice depends mainly on the process connection and installation arrangement.
Can the EJX530B be used for pipeline pressure?
Yes. Gauge pressure measurement is commonly used for line pressure in pipes, and the EJX530B is designed for liquid, gas, and steam pressure measurement.
Can the EJX530B be used for tank applications?
Yes. Gauge pressure is commonly used for applications such as open tank level and tank blanket pressure. The exact transmitter configuration should be selected according to the process connection, pressure range, and installation conditions.
Is the EJX530B suitable for retrofit projects?
Yes. Wireless communication can be particularly useful when additional pressure monitoring points need to be installed without extensive new signal cabling. Yokogawa provides application examples for wireless monitoring in existing industrial environments.
Are manuals and certificates available for the EJX530B?
Yes. Yokogawa's official product page provides the EJX510B/EJX530B instruction manual, general specifications, software, drawings, and an RE Declaration of Conformity.
