Yokogawas EJA110E Transmitter Enhances Efficiency Reduces Costs

In industrial automation, pressure transmitters serve as critical sensory nodes, precisely detecting and transmitting vital process parameters. Yet, unpredictable performance and frequent maintenance of these devices often lead to costly production disruptions. Yokogawa’s EJA110E differential pressure transmitter addresses these challenges head-on, combining the ruggedness of the EJA-A series with the advanced capabilities of the EJX-A series to deliver unmatched reliability and efficiency.

The EJA110E is a cornerstone of Yokogawa’s OpreX brand strategy, specifically within the OpreX Field Instruments lineup. OpreX embodies Yokogawa’s leadership in industrial automation and control technologies, and the EJA110E further strengthens the OpreX Measurement portfolio with its innovative design.

At the heart of the EJA110E lies the DPharp digital sensor, a technological leap over conventional analog sensors. Utilizing cutting-edge IC chip design, the DPharp sensor delivers:

• Twice the performance and stability of analog alternatives
• Consistent, reliable, and precise measurements
• Reduced measurement errors and enhanced process control

The DPharp sensor’s ability to simultaneously measure differential pressure (DP), static pressure (SP), and sensor temperature enables real-time dynamic compensation. This advanced feature corrects for temperature and static pressure fluctuations, ensuring accuracy across diverse operating conditions—a capability absent in traditional analog sensors.

Industrial environments frequently expose transmitters to overpressure events during startups, shutdowns, or process upsets. Unlike conventional sensors that require recalibration or replacement after overpressure incidents, the EJA110E maintains its accuracy and stability when pressure returns to normal operating ranges, thanks to:

• Expanded operational range
• Robust sensor design

The EJA110E’s ability to measure both differential and static pressure with a single transmitter reduces capital expenditures (CAPEX) by up to 20% compared to traditional two-transmitter setups, while simplifying installation and maintenance.

This versatile function compensates for nonlinearities in 4–20 mA analog output signals, applicable to tank calibration, flow measurement, or any scenario with known pressure-input/output relationships.

An easy-to-read display shows multiple process variables (DP, SP, capsule temperature), alarm codes, and bar graphs—independent of the 4–20 mA signal for enhanced monitoring.

With 40 self-diagnostic functions, including two exclusive features, the EJA110E ensures operational integrity:

• Reverse Check Technology: Continuously verifies calculation accuracy
• Active Sensor Technology: Provides constant signal monitoring for immediate fault detection

Advanced diagnostics predict pulse line blockages and steam tracing issues, reducing unplanned maintenance by 60%.

The EJA110E’s durable design includes:

• Four-bolt pressure retention system
• Active DPharp sensor
• Teflon-coated 316L stainless steel flange gaskets
• Dual seals compliant with ANSI/ISA 12.27.01

Independently verified for global compliance, all Yokogawa pressure transmitters meet IEC61508:2010 and IEC61511:2004 standards. They are certified for:

• SIL 2 applications (single transmitter)
• SIL 3 applications (dual transmitters)

Proven long-term stability allows for reduced calibration frequency, lowering maintenance costs.

• FieldMate PC-based software
• FieldMate HHC handheld communicator
• On-transmitter LPS functionality

Clear error codes on the local display enable rapid fault resolution.

Configurable for gas or liquid media, reducing spare parts inventory.

The Yokogawa EJA110E differential pressure transmitter sets a new standard for industrial pressure measurement through its superior performance, intelligent diagnostics, and rugged construction. By enhancing productivity, minimizing maintenance, and ensuring process safety, it represents an optimal solution for demanding automation environments.