Yokogawa EJX530A In-Line Mount Gauge Pressure Transmitter
Overview
The Yokogawa EJX530A is a high-performance in-line mount gauge pressure transmitter built on Yokogawa’s DPharp digital sensor technology, providing accurate, stable measurement of liquid, gas, and steam pressure across a wide range of industrial process conditions. Its in-line process connection eliminates the impulse piping and manifold typically required by flange-mounted designs, simplifying installation on direct pipeline pressure taps throughout process plants.
As a supplier of Yokogawa products, Seven Star LLC supplies the EJX530A In-Line Mount Gauge Pressure Transmitter to process industries, refineries, and utility operators across the Sultanate of Oman and the wider GCC, backed by local technical support with selection and specification.
Measurement Principle
The Yokogawa EJX530A uses a single-crystal silicon resonant sensor at the heart of its DPharp technology, where applied process pressure deforms a resonating silicon element and shifts its resonant frequency in direct proportion to the pressure change. This frequency-based measurement principle is inherently more stable over time and less susceptible to drift than conventional strain-gauge or capacitive pressure sensing technologies, giving the EJX530A its long-term stability rating of ±0.1% of upper range limit over 15 years.
Because the sensing element responds through a digital frequency signal rather than an analog voltage, temperature and static pressure compensation are applied with high precision inside the transmitter’s own microprocessor before the signal is converted to a 4-20 mA, digital fieldbus, or low-power output. The practical benefit for plant operators is a fast 90 ms response time combined with reference accuracy of ±0.04% of span, supporting both steady-state process monitoring and more dynamic control loop applications.
Engineering Design of the Yokogawa EJX530A
The EJX530A is offered with A, B, C, and D capsule options to match different pressure ranges and rangeability requirements, with the A capsule providing 25:1 rangeability and the B, C, and D capsules extending to 50:1, giving engineers flexibility to specify a single transmitter model across multiple pressure duties on a plant. Burst pressure ratings reach 4,350 psi on the A, B, and C capsules and 19,100 psi on the D capsule, supporting both standard process pressures and higher-pressure hydraulic or hydrostatic applications.
The transmitter housing supports the full range of hazardous-area certifications used across the EJX series, and the local digital indicator can be rotated in 90-degree increments to suit any mounting orientation on the process line. Output configurations include 4-20 mA analog with BRAIN or HART protocol selection, a low-power 1-5 VDC option with HART, and all-digital FOUNDATION Fieldbus or PROFIBUS PA communication, allowing the EJX530A to be specified consistently across both conventional 4-20 mA loops and modern digital plant architectures.
Key Features
The Yokogawa EJX530A combines proven DPharp sensing technology with flexible in-line installation for everyday gauge pressure measurement across the region’s process industries:
- Reference accuracy of ±0.04% of span with long-term stability of ±0.1% of URL over 15 years minimizes recalibration frequency.
- Fast 90 ms response time suits both steady-state monitoring and more dynamic control loop applications.
- A, B, C, and D capsule options with rangeability up to 50:1 allow a single transmitter platform to cover multiple pressure duties.
- In-line mount process connection eliminates the impulse piping and manifolds required by flange-mounted designs.
- Burst pressure ratings up to 19,100 psi on the D capsule support high-pressure hydraulic and hydrostatic applications.
- Supports 4-20 mA HART or BRAIN, low-power 1-5 VDC HART, FOUNDATION Fieldbus, and PROFIBUS PA output options.
- Rotatable local digital indicator in 90-degree increments ensures readability from any installation orientation.
- Shares the same hazardous-area certification portfolio as the wider EJX series for consistent plant-wide specification.
Industrial Applications
The Yokogawa EJX530A is widely applied for direct gauge pressure measurement on process piping, compressor discharge monitoring, boiler and steam system pressure control, and general utility pressure measurement across refineries, petrochemical plants, and industrial facilities. Its in-line mounting simplifies specification on tight piping arrangements in district cooling energy centers and RO desalination process trains, where space for flange-mounted transmitters and impulse piping is often limited.
As the trusted supplier for Yokogawa, Seven Star LLC supplies the EJX530A to oil and gas operators, refineries, district cooling providers, and utility companies throughout Oman, including projects supported from the Sohar and Salalah economic zones, as well as broader GCC markets, with lead time confirmed at quotation and application engineering support for capsule and output selection.
Technical Specifications
The table below summarizes the principal specifications of the Yokogawa EJX530A In-Line Mount Gauge Pressure Transmitter, confirming why the Yokogawa EJX530A is specified on space-constrained piping arrangements across the region.
| Parameter | Specification |
|---|---|
| Model | Yokogawa EJX530A |
| Measurement Type | Gauge pressure |
| Reference Accuracy | ±0.04% of span |
| Long-Term Stability | ±0.1% of URL per 15 years |
| Response Time | 90 ms |
| Rangeability | 25:1 (A capsule); 50:1 (B/C/D capsule) |
| Burst Pressure | 4,350 psi (A/B/C capsule); 19,100 psi (D capsule) |
| Process Connection | In-line mount |
| Output / Protocols | 4-20 mA HART/BRAIN, 1-5 VDC low-power HART, FOUNDATION Fieldbus, PROFIBUS PA |
Request a Quote for Yokogawa EJX530A
Seven Star LLC invites process plants, refineries, and utility operators across Oman and the GCC to submit a formal request for quotation for the Yokogawa EJX530A In-Line Mount Gauge Pressure Transmitter. In Oman and the GCC, Seven Star LLC supplies common capsule configurations on request, provides the manufacturer technical datasheet on request, and connects customers directly with our instrumentation division for capsule and output selection support. Contact Seven Star LLC today to receive a competitive quotation with current lead time and local technical support. The Yokogawa EJX530A is supplied on request for process pressure monitoring projects, with lead time confirmed at quotation.
Browse the full Yokogawa range or see more Pressure Instrumentation products supplied by Seven Star LLC in Oman and the GCC.
- datasheet Yokogawa EJX530A Datasheet Download
Yokogawa product families on this page
Pressure is covered by the DPharp transmitters: the EJX110A differential pressure transmitter, the EJX530A and EJA530E in-line gauge pressure transmitters and the EJX910A multivariable transmitter. The ADMAG AXW is the magnetic flowmeter line, and the YTA610 and YTA710 are temperature transmitters. Analyzers include the FLXA402 four-wire and FLXA21 two-wire liquid analyzers, the TDLS8000 tunable diode laser gas analyzer and spare parts for zirconia oxygen analyzers, such as the E7042UD cell assembly kit for the ZR22 detector. Control hardware includes CENTUM VP I/O modules like the ADV161 digital input module and the YS1700 programmable indicating controller.Where Yokogawa instruments are used
EJA and EJX transmitters measure pressure, level and DP flow throughout oil and gas, chemical and power plants. Zirconia oxygen analyzers and the TDLS8000 are used for combustion control on boilers and fired heaters. FLXA analyzers monitor pH, conductivity and dissolved oxygen in water and process streams, and CENTUM modules are bought as replacements for running control systems.Ordering Yokogawa parts: what we need
Send the model and suffix code and the serial number from the nameplate, and for CENTUM modules the style code as well. For transmitters without a code we need span, output protocol, wetted materials, process connection, housing and the approval required. For oxygen analyzer spare parts give the detector and converter models, for example ZR22G and ZR402G, and the part number.Browse Yokogawa products by category: PLC & I/O Cards, Flowmeters, Pressure Instrumentation, Automation Accessories, Temperature Instrumentation.
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