Pressure transmitters are used to measure the pressure or level of industrial liquids and gases. The output is transmitted to a control system. Accurate and stable process measurements ensure the safe, reliable, and profitable operation of your plant.
Compact, lightweight, intuitive and intelligent, Yokogawa pressure instruments simplify all aspects of handling, commissioning, installation, operation, and maintenance while delivering outstanding performance. Whether installed in the harsh environment of an offshore platform or a refinery in the burning desert heat, our DPharp series delivers accurate, repeatable, and high integrity process measurements.
Learn more about Pressure Transmitters.
Click 'Details' above or link below to see the following content.
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Gauge Pressure
Gauge Pressure transmitters compare a pressure relative to atmospheric measure.
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Differential Pressure
Differential Pressure (DP) is defined as the difference between two pressures. Differential Pressure Transmitters use a reference point called the low-side pressure and compare it to the high-side pressure. Ports in the instrument are marked high-side and low-side.
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Absolute Pressure
Absolute Pressure transmitters compare a pressure relative to Absolute pressure. Absolute pressure is always a positive value.
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Diaphragm Seal System
Diaphragm Seal System can be used to measure liquid, gas, or steam flow as well as liquid level, density, and pressure.
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Wireless Differential Pressure/Pressure Transmitters
Yokogawa offers a complete line of ISA100 compliant pressure transmitters. The line includes transmitters that can measure differential pressure, absolute pressure, and gauge pressure.
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Liquid Level
Accurate level readings are essential to the safe, reliable, profitable operation of your plant. Liquid Level transmitters measure differential pressure to infer the level in a vessel.
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Mass Flow (Multivariable)
There are several technologies on the market to measure mass flow. One is the Multi-variable Pressure Transmitter.
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Draft Pressure
Draft Pressure transmitters are a unique type of differential transmitter that is designed to measure small differences in very low static pressure environments.
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Low Flow
Using Bernoulli's equation, Differential Pressure transmitters can be used to infer the flow of fluid through a pipe.
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Hygienic Pressure Transmitters
Hygienic Pressure Transmitters are designed to fulfil the requirements of hygienic and pharmaceutical application.
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Partner Products for Pressure Transmitters
Yokogawa Partner Products for Pressure Transmitters
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Product Finder
This web tool makes it easier to find products according to the application, measurement conditions and required specifications.
Details
Yokogawa have been manufacturing electronic pressure transmitters for more than four decades. We revolutionized the industry and set a new standard for pressure measurement with the introduction of the DPharp digital sensor in 1991. The superior performance of the new technology enabled exponential market expansion. Yokogawa continues, the digital evolution with the enhancement of our DPharp family to deliver best in class pressure measurement solutions to our esteemed customers.
Timeline of Yokogawa's Pressure Sensor Advances.
DPharp Pressure Transmitters EJX Series/EJA Series Comparison Table
Refer to the general specifications on each product page for detailed specifications.
| EJX-A Series | EJA-E Series | |
|---|---|---|
| Accuracy | ||
| ± 0.025% | ● | |
| ± 0.040% | ● | ● |
| ± 0.055% | ● | |
| Stability | ||
| ± 0.1% of URL per 15 years | ● | |
| ± 0.1% of URL per 10 years | ● | |
| Maximum Working Pressure | ||
| 250 bar | ● | ● |
| 160 bar | ● | |
| Turn down | ||
| 200 : 1 | ● | |
| 100 : 1 | ● | |
| Multi sensing | ||
| DP, SP | ● | ● |
| Safety | ||
| FMEDA report | ● | ● |
| IEC61508 Certified | ● | ● |
| Response Time | ||
| < 90 msec | ● | ● |
| User Linearisation | ||
| 10 points signal characteriser | ● | ● |
| FF Function Blocks | ||
| AI (Analog Input) | ● | ● |
| PID (PID control) | ● | ● |
| Other * | ● | ● |
| FF Link master | ||
| Standard | ● | ● |
| Advanced Diagnostics | ||
| Impulse line blockage detection | ● | |
| Heat trace monitoring | ● | |
| Alarm output | ||
| Contact output | ● | |
| Multi-Variable | ||
| DP, SP, PT, QV and QM | ● | |
| Wireless Communication | ||
| ISA100.11a | ● | |
* Other FB include SC (Signal Characteriser), IT (Integrator), AR (Arithmetic) and IS (Input Selecor).
Important Notice
| Date | Remarks |
| 2024/12 | Important Notice for Safe Use of Products |
Resources
DP Level transmitter configuration can be very time consuming. Yokogawa DPharp EJA/EJX Pressure transmitters realize reduction in man hours by smart level setup feature.
Yokogawa DPharp EJA/EJX Pressure transmitters do not need frequent re-zeroing due to superior long term stability, it contributes to reduce maintenance time.
Caustic soda and hydrochloric acid, produced in electrolyzer plants, are fundamental materials used in varieties of industries; chemicals, pharmaceuticals, petrol-chemicals, pulp and papers, etc. Profit is the result of the effective production with minimized running / maintenance cost. Proper control of the process brings you stabilized quality of products with the vast operational profit.
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
Differential pressure level measurement has an enemy- temperature. Temperature can have a negative effect on the accuracy of level measurement. This article covers why temperature has this effect and how it can be reduced.
Downloads
Videos
How much do you know about pressure transmitters? Are you accurately, quickly and reliably measuring pressure? Ultimately, the drive of any good pressure transmitter is to get an accurate, reliable pressure measurement to the data user quickly. This video gives you the answers to your basic questions about pressure and pressure transmitters.
Yokogawa’s Local Parameter Setting (LPS) featured in our Pressure Transmitters helps you set 9 parameters without the use of a handheld communicator.
Join this webinar to better understand which manifolds you should use for specific applications and conditions. You will learn:
- A brief history of manifolds
- An overview of the different types of manifolds that are available
- The advantages, disadvantages, and application considerations you should consider when selecting a manifold
News
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News Brief Aug 2, 2019 Yokogawa Wins Bulk Order to Supply 1,350 Pressure Transmitters to Argentine National Oil Company
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Press Release Mar 24, 2016 Yokogawa to Commence Production of Differential Pressure/Pressure Transmitters in India
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