EJA118E DP Transmitter with Remote Diaphragm Seals

The EJA-E series of transmitters is Yokogawa's most recent evolution of the DPharp family. Released in 2012, it combines the ruggedness and success of the work-horse EJA-E series with the performance of the thoroughbred EJX-A series to deliver the type of product you have come to expect from Yokogawa.

The EJA118E is a Differential Pressure Transmitter with remote diaphragm seals.

EJA118E features include:

  • ± 0.2% Accuracy
  • 200 ms Response Time
  • Exida and TUV SIL2 / SIL3 Certified
  • Local Parameter Setting (LPS)
  • 10-segment Signal Characterizer
  • Active Capillary Fill Fluid Density Compensation

Explore how the EJA118E can help your Boost your bottom line.

EJA118E DP Transmitter with Remote Diaphragm Seals-Overview

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

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

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, Yokogawa's 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

 

Superior Design

Superior Design

All remote seal system on the market use fill fluid to 'transmit' the process pressure from the remote diaphragm seal to the pressure sensor in the transmitter. The physical properties of the fill fluid change has process temperature and ambient temperature change causing the transmitter to measure inaccurately. This effect get worse the longer the capillaries are. The key is to filter out this 'noise' to get an accurate, consistent, reliable measurement. Yokogawa has a superior design, manufacturing process, and features to reduce this 'noise'.

 

Signal Characterization

Signal Characterization

Signal characterization is a versatile function available on all Yokogawa pressure transmitters. The function is used to compensate the analog 4 to 20 mA output signal for non-linear applications. Such applications include tank strapping or flow measurements; but, it can be used in any application where the relationship between the pressure input and the desired output signal are known. This feature can use up to 10-points.

Greater Flexibility = Found Money

 

Local Indicator

Local Indicator

All of the process variable's measured by Yokogawa's transmitter can be displayed on the easy to read local indicator. The indicator can display any of the variables measured (DP, SP, Capsule temperature); alarm codes with short text; and a sweeping bar graph to give a graphical representation of the process. Fully programmable, the indicator is customizable for your needs. Unlike competitor's transmitters, the indicator is not driven off the 4 to 20 mA analog signal, but, exist on a separate circuit. This allow the display to operate independently from the output signal, so it can indicate information that maybe more useful at the transmitter location.

More information = Found Money

 

Standard Diagnostics

Yokogawa's transmitter 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

Rugged Construction-EJA118E

Ruggedly constructed differential pressure transmitter can help your plant reduce failures. Yokogawa pressure transmitters have construction features that are designed to allow it to outlive your plant. Four-bolt pressure retaining design, Active DPharp sensor, 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.

Note: For conformance to NACE MR0175/MR0103, please refer to General Specifications of each model.

Ruggedness = Reliability

 

Over-pressure Protection

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

 

Independent Verification

Independent Verification

The Yokogawa pressure transmitter series' performance and reliability has been verified by independent third parties from around the world.

 

Functional Safety

Functional Safety

All Yokogawa 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's transmitters, no longer will you have to maintain two seperate inventories - one for production applications and one for safety applications.

Functional Safety = Reliability

 

Active Sensor Technology

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

Patented Self-check System

Yokogawa's 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

Yokogawa's DPharp pressure transmitters offer long-term stability and diagnostics to make your maintenance routine easy.

 

Extended Calibration Intervals

Extended Calibration Intervals

Yokogawa's 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

 

Multiple Communication Options

Multiple Communication Options

Yokogawa offers several platforms to communicate to your transmitter.
FieldMate is a PC based communication platform that can communicate with your transmitter and manage your entire instrument inventory.
FieldMate HHC is a traditional hand-held platform that allows you to take that information into the field.
Forgot your HHC? No problem. The LPS feature on the transmitter allows you to update 9 parameters without the use of an HHC.

Quicker Maintenance = Less Downtime

 

Simple Troubleshooting

Simple Troubleshooting

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's pressure 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

EJA118E Overview

Refer to the General Specification sheet located under the 'Downloads' tab for detailed specifications.

Measurement Types
Primary Variable Differential Pressure (DP)
Secondary Variable Static Pressure (SP)
Reference Accuracy
Primary Variable ±0.2% of DP Span
Secondary Variable ±0.5% of SP Span
Response Time
Primary Variable 200 msec
Secondary Variable 500 msec
Rangeability
Primary Variable M-Capsule: 40:1
H-Capsule: 20:1
Specification Conformance
EJX-A Series ±3σ

 

EJA118E Process Connections

  Process connection Type Size Extension Flange
High-Pressure Side Low-Pressure Side
Flush Type Flush Type Flush Type 3-inch
2-inch
1-½-inch
N/A JIS 10K, 20K, 30K
ANSI 100#, 300#, 600#
JPI Class 150, 300, 600
DIN PN10/16, 25/40, 64
Extended Type Extended Type Extended Type 4-inch
3-inch
2-inch
4-inch
6-inch
JIS 10K, 20K
ANSI 150#, 300#
JPI Class 150, 300
DIN PN10/16, 25/40
Combination
Flush Type-Flush Type Extended Type Flush Type Low-Pressure Side:
3-inch
High-Pressure Side:
4-inch
Low-Pressure Side:
N/A
High-Pressure Side:
2-inch
4-inch
6-inch
JIS 10K, 20K
ANSI 150#, 300#
JPI Class 150, 300
DIN PN10/16, 25/40

 

EJA118E Capsules

EJA118E Capsules Code M

EJA118E Capsules Code H

 

Flushing Connection Ring

Flushing Connection Ring

A Flushing Connection Ring, a round device that is placed between the diaphragm seal and the process connection. The device has two 1/4-inch ports that can be used to run a flushing solution across the face the seal to clean it. If you need a different size port, Yokogawa also offers Flushing Connection Rings supplied by a global partner WIKA.

 

Communicators

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 out communicators are compatible with Yokogawa products as well as other products on the market.

Learn More

 

Remote Indicators

Remote 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.

Learn More

 

Pressure Calibrators

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.

Learn More

 

Communication Convertors

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.

Learn More

Overview:

Download this eBook and learn:

  • The basic physics of pressure
  • Different types of pressure sensors
  • Features of pressure transmitters
  • Pressure transmitters communications standards
  • Key characteristics of pressure
  • Common types of diaphragm seals
Brochures
Instruction Manuals
General Specifications
Software
Drawings

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