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Yokogawa EJA110E Differential Pressure Transmitter

Yokogawa EJA110E Differential Pressure Transmitter

The EJA-E series of transmitters is Yokogawa’s most recent evolution of the DPharp family of pressure transmitters. Released in 2012, it combines the ruggedness and success of the work-horse EJA-A series with the performance of the thoroughbred EJX-A series to deliver the type of product you have come to expect from Yokogawa. The EJA110E is our standard traditional-mount differential pressure transmitter in this series. The high performance differential pressure transmitter EJA110E features single crystal silicon resonant sensor and is suitable to measure liquid, gas, or steam flow as well as liquid level, density and pressure. EJA110E outputs a 4 to 20 mA DC signal corresponding to the measured differential pressure. Its accurate and stable sensor can also measure the static pressure which can be shown on the integral indicator or remotely monitored via BRAIN or HART communications. Other key features include quick response, remote set-up using communications and self-diagnostics. FOUNDATION Fieldbus, PROFIBUS PA and 1 to 5 V DC with HART (Low Power) protocol types are also available. EJA-E series models in their standard configuration, with the exception of the Fieldbus, PROFIBUS and Low Power types, are certified as complying with SIL 2 for safety requirement.

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The EJA-E series of transmitters is Yokogawa’s most recent evolution of the DPharp family of pressure transmitters. Released in 2012, it combines the ruggedness

and success of the work-horse EJA-A series with the performance of the thoroughbred EJX-A series to deliver the type of product you have come to expect from Yokogawa.

The EJA110E is our standard traditional-mount differential pressure transmitter in this series.

EJA110E features include:

  • 0.055% Accuracy (0.04% Accuracy optional)
  • 0.1% Stability per 10 years
  • 90 ms Response Time
  • Exida and TUV SIL 2 / SIL3 Certified
  • MWP 2,300 psi (MWP 3,600 psi option)
  • Local Parameter Setting (LPS)

EJA110E U Composite (1a)

EJA110E Specification

PRIMARY VARIABLEDifferential Pressure (DP)
SECONDARY VARIABLE±0.5% of Span available
PRIMARY VARIABLE±0.1% of URL per 7 years

EJA110E Physical Overview

EJA110E Capsule Overview

Minimum Span to Maximum Span


EJA110E Capsule Details





Yokogawa pressure transmitters help plants run longer.

Yokogawa’s DPharp active sensor, patented back check diagnostics, and rugged construction allow users to run their plants safer and with less downtime.

Rugged Construction

Ruggedly constructed pressure transmitter can help your plant reduce failures. Yokogawa pressure transmitter have construction features that are designed to allow it to outlive your plant. Four-bolt pressure retaining design, Teflon® coated 316L stainless steel flange gasket, and dual seal certified to ANSI/ISA 12.27.01 – all design features to extend the life of the transmitter.

Over-pressure Protection

Yokogawa’s DPharp pressure sensor has over-pressure protection from the simple robust design of the sensor itself. But, Yokogawa goes a step further and adds a mechanical system within the capsule to protect the transmitter from over pressure events. These events could be caused by anything from unexpected process surges to improperly sequenced manifolds.

Ruggedness = Reliability

Proven Technology

Starting with a clean sheet of paper, Yokogawa developed in the early 1990s a completely new pressure sensing technology – the DPharp sensor. Yokogawa made a large commitment of resources and money in its development. That dedication paid off and by early 2015, there are over 7 million installed Yokogawa transmitters and calibrators worldwide using this technology. The DPharp sensor is proven technology.

Less Downtime = Making Product.

Independent Verification

The Yokogawa EJA-E pressure transmitter series’ performance and reliability has been verified by independent third parties from around the world. From Safety System SIL rating to general performance evaluations, the EJA-E series has met or surpassed every test that it has been given.

Less Downtime = Making Product.

Inherently Safe

All Yokogawa EJA-E series pressure transmitters are designed and certified to IEC61508:2010 Parts 1 through 7 and IEC61511:2004 Parts 1 through 3. They are certified for single transmitter use in SIL 2 safety applications and dual transmitter use in SIL 3 safety applications with no special option required. With Yokogawa EJA-E transmitters, no longer will you have to maintain two seperate inventories – one for production applications and one for safety applications. How much will that save your company? The certificates are available under the “Download” tab above.

Inherently Safe = Reliability.

For Yokogawa, safety is never an option.

Active Sensor Technology

The DPharp sensor is an active sensor. This means that the sensor is constantly supplying a signal even when the process has not changed. If the signal is lost from the sensor, the transmitter knows there is an issue. Competitor’s analog sensors are passive. They do not supply a continual signal, so is the sensor still working when there is no signal? An active sensor is inherently safe.

Inherently Safe = Reliability.

Patented Self-check System

Yokogawa’s EJA110E pressure transmitters as a patented real-time reverse check of the signal to ensure all calculations are preformed correctly. This system ensures that the transmitter is converting the signal from the sensor into the analog signal and digital protocol correctly.

Inherently Safe = Reliability.

Product manuals


#FileDescriptionDate addedAdded byFile sizeDownloads
1 pdf EJA110E General Specifications01/30/2020 19:06admin2 MB15


Yokogawa offers manifolds from several different manufacturers. Available in Pipe x Pipe, Flange x Pipe, Flange x Flange, and bottom process connection configurations; Grafoil® and Teflon® packing, and a wide range of materials. These manifolds can be delivered individually or attached to the transmitter. The entire assembly is then pressure tested to ANSI B16.5 standard.


Yokogawa manufactures a communicator for your needs. Yokogawa communicators are available for BRAIN Protocol, HART Protocol, FOUNDATION Fieldbus, PROFIBUS PA, ISA100, or MODBUS. All our communicators are compatible with Yokogawa products as well as other products on the market.


Yokogawa offers a range of loop powered and FOUNDATION Fieldbus remote indicators that can be used to locally monitor data from field instruments installed in difficult to access locations.

Pressure Calibrators

The Yokogawa CA700 Portable Pressure Calibrator uses the same DPharp sensor technology as our EJA-E and EJX-A series pressure transmitters. It provides an accurate and efficient calibration and verification tool for any pressure transmitter or other type of field device.

Communication Convertors

Yokogawa offers communication converters to convert secondary HART protocol variables to a 4 to 20 mA analog signal or all the HART variables to MODBUS RTU.

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