Reliable Solutions for Flow and Level Measurement
Differential Pressure (DP) transmitters measure the difference between two pressures. They are used in critical processes such as flow measurement, hydrostatic level measurement, and filter monitoring. Yokogawa’s EJA and EJX series DP transmitters are recognized in the industry for high accuracy, long‑term stability, DPharp digital sensor technology, and global certifications.
This technical guide is a complete resource covering differential transmitter models, technical specifications, code breakdowns, and application guidelines. It also includes a selection table by application, installation tips, and technical range comparisons to support engineers in choosing the right model.
The following models form the core DP transmitter platforms of Yokogawa’s EJA‑E and EJX series:
Note: The EJA series is more economical and suitable for standard applications, while the EJX series is premium, designed for high precision and fast dynamic response processes.
Below is an example for one of the most commonly used models, EJA110E.
| Code | Description |
| EJA110E | Differential Pressure Transmitter |
| D | Range code (measurement range) |
| M | Body material (316SS) |
| S5A | Diaphragm material (Hastelloy, Tantalum options) |
| 92DN | Electrical connection standard |
| /NF | Option (e.g., ATEX certification) |
➡ If required, I can prepare complete product code breakdown tables for all models (110 – 120 – 130 – EJX – P10).
| Specification | Value |
| Measurement Range | 0–1 mbar up to 1000 bar |
| Accuracy | ±0.04% (EJX: ±0.025%) |
| Output Signals | 4–20 mA HART, FOUNDATION Fieldbus, Profibus |
| Process Connections | NPT, DIN/ISO, Flange adapters |
| Wetted Materials | 316SS, Hastelloy, Monel, Tantalum |
| Protection Class | IP66/IP67, optional IP68 |
| Operating Temperature | −40 °C – +85 °C |
| Safety Certification | SIL2 / SIL3 |
Additional Note: The DPharp sensor structure used in Yokogawa transmitters is more stable than conventional piezoresistive sensors, offering up to 15 years of drift‑free operation.
Differential transmitters operate by comparing the high‑side and low‑side pressure inputs:
DP transmitters use Bernoulli’s principle for flow measurement and hydrostatic pressure difference for level measurement. Therefore, they are widely used in flowmeter systems (orifice plate, venturi, pitot tube) as well as in tank level monitoring.
Additional Note: DP transmitters are also widely used in HVAC, food & beverage, cement, and automotive processes.
| Application / Requirement | Recommended Model |
| General flow measurement | EJA110E / EJX110A |
| Tank level measurement | EJA130E / EJX130A |
| Applications requiring remote sensors | EJXC40A |
| Corrosive environments & diaphragm seal requirement | EJXC80A / EJAC80E |
| Very low differential pressures | EJA120E / EJX120A |
| High accuracy for critical processes | EJX110A (±0.025%) |
| Compact solution & cabinet installation | EJA‑E Mini Housing Options |
Additionally: The P10 series provides advantages for multi‑sensing needs such as temperature + pressure + DP + calculated flow.
Additional Improvement: Impulse line flushing and freeze protection (heat tracing) before installation significantly improve performance, especially in low‑temperature environments.
Yeşil Grup Enerji independently supplies Yokogawa EJA110E, EJX110A, EJA130E, and EJXC50A series in Turkey and global markets.
Regional coverage:
For Yokogawa EJA110E, EJX110A, EJA130E, or other differential pressure transmitter models:
📞 +90 505 696 61 00
🌐 www.yesilgrupenerji.com
👉 Important Note: Yeşil Grup Enerji is an independent supplier. We are not the official distributor of the brands mentioned on this page. However, with multi‑brand global sourcing, extensive stock access, and fast RFQ responses, we provide the most suitable solutions for your projects.