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 EJX120A is the traditional-mount Draft Range Pressure Transmitter in the series.
EJX120A features include:
- Accurately: ± 0.09% Accuracy
- Reliably: ± 0.15% per 1 year Stability
- Quickly: 150 ms Response Time
Explore how the EJX120A can help you Boost your bottom line.
Details
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.
Plants run better with Yokogawa pressure transmitters.
Digital Performance
Installed performance 2x better using all digital DPharp pressure sensor.
Yokogawa’s digital sensor provides superior performance and stability compared to analog sensors.
Poor Performance = Lost Money

Standard Diagnostics
Reduce unscheduled maintenance by 60%
Over 40 diagnostics to ensure everything is OK. Active Sensor Technology monitors the DPharp sensor while the Patented Back-check Technology is reverse checking all calculations in real-time.
Good Diagnostics = Less Surprises

Yokogawa's DPharp active sensor, patented back check diagnostics, and rugged construction allow users to run their plants safer and with less downtime.
Yokogawa pressure transmitters help plants run longer.
Rugged Construction
Reduce failures in the field by 200%.
Yokogawa transmitters are designed to out live your plant.
Ruggedness = Reliability

Over-pressure Protection
Reduce failures and calibrations.
Yokogawa DPharp pressure transmitters have an integral over-pressure mechanism to protect your transmitters from process surges or improperly sequenced manifolds.
Proven in Use
Less Downtime = Making Product
Over 6 million DPharp transmitters are installed worldwide.

Reliability Guaranteed
Reliability verified independently by third party industry experts.
Inherently Safe
Save up to 10% on CAPEX spending.
All Yokogawa pressure transmitters are certified to meet IEC61508 for single use in SIL 2 applications or dual use in SIL 3 applications as a standard. No special option needed! To Yokogawa, safety should never be an option.
Inherently Safe = Reliability


Active Sensor Technology
Unlike other sensor technologies, the active DPharp sensor constantly produces a signal even if there is no change in the process. This signal is continually monitored by the CPU.
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Efficient and effective maintenance through extended calibration intervals and simple trouble shooting.
Routine maintenance is easier with Yokogawa pressure transmitters.
Extended Calibration Intervals
Reduce maintenance cost by 33%.
Improved long-term stability extends calibration intervals. Spend your time where it is needed.
Quicker = Less Downtime
Multiple Communication Options
FieldMate PC based communication platform allows management of your entire instrument inventory.
FieldMate HHC allows you to take that information into the field.
LPS can update 9 parameters in the field without the use of an HHC.
Save time, Save money
Simple Troubleshooting
Local intuitive display with simple error messaging.
NE107 compliant alarms in FieldMate make troubleshooting easy.
Save time, Save money

Standard Protocols
No training required.
Yokogawa transmitters support all industry standard field device protocols. Interoperability and interchangeability can be ensured. Use the same tools and work procedures as before.
No Learning Curve = Smooth Change Over

Standard Industry Connections
Process connections designed to meet IEC61518 ensure you will not meet proprietary manifolds or accessories that limit your design choices.
EJX120A Overview
Measurement Types | |
---|---|
Primary Variable | Differential Pressure (Draft Range) |
Reference Accuracy | |
Primary Variable | ±0.09% of Span |
Response Time | |
Primary Variable | 150 msec |
Rangeability | |
Primary Variable | 40:1 |
WPC004.a
EJX120A Capsule
Graphics are not to scale.
Manifolds
For Differential pressure transmitters, Yokogawa offers a complete line of 61518 IEC compliant 3-valve and 5-valve manifolds. Available in T-Style, H-Style, Wafer-Style, and Bottom Process Connection Style, they can be ASME B31.1 (Power) Compliant, ISA 15848 Compliant, or TA-Luft Compliant.
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3-Valve/5-Valve Manifold
- 3-Valve and 5-Valve differential pressure transmitter manifolds
- Designed for IEC 61518 compliant traditional mount differential pressure transmitters
Resources
Yokogawa DPharp EJA/EJX Pressure transmitters do not need frequent re-zeroing due to superior long term stability, it contributes to reduce maintenance time.
Discover the safety features built-in to the Yokogawa digital pressure sensors (DPharp).
Downloads
Brochures
- Application for the Marine industry (6.0 MB)
Instruction Manuals
- EJX and EJA-E Series Differential Pressure and Pressure Transmitters Installation Manual (7.2 MB)
- Differential Pressure and Pressure Transmitter (6.3 MB)
- DPharp Fieldbus Communication Type (3.7 MB)
- DPharp HART 5/7 Communication Type (12.2 MB)
- DPharp BRAIN Communication Type (2.7 MB)
- DPharp PROFIBUS PA Communication Type (6.2 MB)
- EJX/EJA-E series NEPSI Certification[Option code: /NF2, /NF21, /NS21, /NS24 and /NS25] (622 KB)
- Manual Change 22-25E: EJX/EJA-E series NEPSI Certification[Option code: /NF2, /NF21, /NS21, /NS24 and /NS25] (312 KB)
General Specifications
Technical Information
- Functional Safety Manual (730 KB)
- Functional Safety Manual exida Certification (411 KB)
Certificates
Engineering Tools
- EJX120A Differential Pressure Transmitter (331 KB)
- EJX120A Differential Pressure Transmitter Universal Flange (248 KB)
- CMPL - EJX-A Series Transmitter Section (261 KB)
- EJX110A, EJX120A, EJX130A with Option Code /N1 (437 KB)
- EJX110A, EJX120A, EJX130A with Option Code /N2 and /N3 (438 KB)
- /U1 Long Vent Plug (254 KB)
- 3D CAD Configurator - EJX120A
- CMPL 01C25B01-01E (378 KB)
2D/3D Configurator
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