EJX110A Differential Pressure Transmitter

The EJX-A series is Yokogawa's premium performance line of DPharp transmitters. Released in 2004, it offers the performance and stability needed in demanding applications. The EJX-A series performance makes it the thoroughbred of the DPharp family of pressure transmitters.

The EJX110A is the traditional-mount Differential Pressure Transmitter in the series.

EJX110A features include:

  • ± 0.04% Accuracy (0.025% Accuracy option available)
  • ± 0.1% per 15 years Stability
  • 90 ms Response Time
  • 3,600 psi MWP
  • Exida and TUV SIL2 / SIL3 Certified
  • Local Parameter Setting (LPS)

Explore how the EJX110A can help you Boost your bottom line.

EJX110A Differential Pressure Transmitter-Overview

EJX110A Differential Pressure Transmitter-Accessories

Plants run better with Yokogawa differential pressure transmitters.

At it's heart, Yokogawa's Differential Pressure Transmitter with DPharp digital sensor offers the performance and device intelligence needed to get greater insight into your process.

Digital Performance

Yokogawa's DPharp digital sensor offers twice the performance and stability of the competitor's analog sensors. The DPharp uses the latest in IC Chip-style design and manufacturing technology. Analog sensors are based on older design technology. Although analog sensors are good, the modern DPharp sensor out performs them. A Yokogawa transmitter with DPharp digital sensor will give you the consistent, reliable, accurate measurement you need.

Poor Performance = Lost Money

Accuracy Under All Operating Conditions

Yokogawa's DPharp sensor has the ability to measure the differential pressure (DP), static pressure (SP), and sensor temperature from a single sensor. Giving these three pieces of process data, the EJX110A transmitter can compensate the DP measurement for Temperature Effect and Static Pressure Effect in real time. This is referred to as Dynamic Compensation and improves the DP measurement accuracy. Competitor's analog sensors can only measure DP and Sensor temperature. So, theirs can compensate for temperature Effect; but, since the SP measurement is missing, it cannot compensate for Static Pressure Effects.

Poor Performance = Lost Money

Stability Under All Operating Conditions

To some degree, all pressure sensors on the market provide stable measurement with variations in temperature and static pressure. But what happens when the sensor is over-pressured (pressure > sensor Upper Range Limit (URL)) - like occurs when a manifold is incorrectly sequenced during start-up or shutdown? Or a process upset? Analog sensors are actually damaged during these events requiring the transmitter to be recalibrated to return to accurate operation or even replaced. The EJX110A can withstand overpressure events up to 3,600 psi. Once it returns to normal operating pressure (pressure < URL of the sensor), the transmitter will return to operation within the defined accuracy and stability specifications - no need to recalibrate.  Basically, the Yokogawa DPharp sensor has a larger operational envelope compared to an analog sensor.

Poor Performance = Lost Money

Diagnostics

The EJX110A has 40 self-diagnostic checks to ensure that everything is running smoothly within the transmitter. But, all transmitters on the market have a level self-diagnostic checks. However, Yokogawa has two that are not offered by competitors. First, the transmitter features a patented Back-check Technology that reverse checks all calculations in real-time. Second, 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?

Good Diagnostics = Less Surprises

 

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.

Ruggedness = Reliability

 

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

 

Inherently Safe

All Yokogawa EJX-A 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 EJX-A transmitters, no longer will you have to maintain two separate 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

 

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 EJX110A 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

Routine maintenance is easier with Yokogawa pressure transmitters.

Extended Calibration Intervals

Yokogawa EJX-A series pressure transmitters have a long-term stability under all operational conditions. As you gain experience with these transmitters, you will be able to extend the time between calibration checks.

Quicker Maintenance = Less Downtime

Interval Between Calibration Checks

 

Simple Trouble Shooting

When your transmitter is 'alarming', you do not have the time to look for the manuals and go through them trying to figure out what is wrong; you need to get the transmitter up and operating again as quick as possible. Yokogawa EJX-A series transmitters have a simple description of the error code available on the local display. This simple description may help you correct the problem and get back to making product quickly. If you need more help, the manual does have a full description of all codes and suggest corrective actions.

Quicker Maintenance = Less Downtime

 

Universal Mounting

Pressure transmitters on the market have several different flange configuration depending on the medium being measured (Gas or liquid). This requires plants that process both medium to maintain a stock of both types of configurations. Yokogawa's EJX110A offers a universal mount that can be configured to handle either Gas or Liquid; reducing your inventory of replacement transmitters.

High Inventory = Stagnant Money

 

Standard Industry Process Connections

Yokogawa transmitter use the industry standard IEC61518 process connection dimensions. This ensures you will not need proprietary manifolds or accessories that limit your design choices. The IEC61518 standard gives you the piece of mind that if you ever want to make a change in transmitter manufacturer, you can. Some competitors have proprietary process connections that do nothing more than lock you into buying their product as replacements.

High Inventory = Stagnant Money

EJX110A Specification Overview

Measurement Types
Primary Variable Differential Pressure
Secondary Variable Static Pressure
Reference Accuracy
Primary Variable ±0.04% of Span
±0.025% of Span available
Secondary Variable ±0.2% of Span
Response Time
Primary Variable 90 msec
Secondary Variable 360 msec
Long Term Stability
Primary Variable ±0.1% of URL per 10 years
Over-pressure effect
Primary Variable ±0.03% of URL
Rangeability
Primary Variable 200:1

 

EJX110A Capsules

MSC001.b

MSC002.a

MSC003.a

MSC004.a

Graphics not to scale.

EJX110A Pictures

Valve Manifolds

Yokogawa offers a range of valve manifolds and accessories for combination with the DPharp EJX and EJA series transmitters in partnership with AS Schneider-Germany and WIKA/Micro precision-India.

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Communicators

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.

 

Indicators

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.

Overview:

Field instruments are expected to be equipped with diagnostic functions to predict abnormal process conditions, and are also expected to expand these functions. The ability to extract diagnostic information for prediction and prevention from various physical process quantities measured by devices and make it available allows the user to reduce non-essential and non-urgent maintenance and thus cut maintenance costs.

Overview:

Yokogawa Electric Corporation promotes the standardization of FOUNDATION™ fieldbus as the communication foundation supporting Asset Excellence for VigilantPlant, which is an approach aimed at the advancement of plant instruments and equipment. With the recent dramatic advancement of fieldbus technologies, information processing technologies, and network speed, it has become possible to process various kinds of information inside the field sensors and transmit the results to the distributed control system (DCS) and host computer.

Overview:

Safe plant operation has long been pursued in all industries. Specifically, in the process automation industry which involves many hazardous elements, safety measures including explosion-protected systems have been adopted based on numerous tragic experiences.

Overview:

Since the release of the DPharp EJ series in 1991 and the DPharp EJA series in 1994, nearly 1.2 million of these transmitters have been operating all over the world. Recently, we have also developed the EJX series of even more compact, lightweight and advanced transmitters with multi- sensing capabilities built using silicon resonant sensor technology.

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