Yokogawa EJX118A Diaphragm Sealed Differential Pressure Transmitter

About this product

Product Introduction The core feature of EJX118A is its diaphragm sealing structure. This structure isolates the process medium from the core sensor of the transmitter through a capillary tube filled with fluid, effectively preventing high and low temperatures, high viscosity, easy crystallization, corrosive or solid particle containing media from directly contacting the sensor, thereby protecting the instrument and ensuring long-term stability and reliability of the measurement. It is mainly used for precise measurement of flow rate, liquid level, density, and pressure of liquids, gases, or vapors. Core Technical Features DPharp Digital Sensor: Adopting a monocrystalline silicon resonant digital sensor, it directly outputs digital signals, avoiding errors caused by analog conversion and ensuring high measurement accuracy and stability. This sensor can simultaneously measure differential pressure, static pressure, and temperature, and dynamically compensate based on real-time data, effectively eliminating the influence of environmental temperature and static pressure changes on the measured values Excellent Measurement Performance: High precision: The reference accuracy of the main variable (differential pressure) can reach ± 0.15%, and the accuracy of the auxiliary variable (static pressure) is ± 0.2% High range ratio: The main variable range ratio is as high as 50:1, which increases the applicability range of a single instrument Fast Response: The response time of the main variable can reach 200 milliseconds, enabling real-time tracking of process changes Advanced Diagnostic and Safety Functions: Multi-sensor diagnosis: It can detect process abnormalities such as pulse pipeline blockage and heat tracing pipeline damage. Back-Check Patent Self-Check: Verify the correctness of the signal processing link through real-time reverse calculation and provide additional reliability guarantee. Functional Safety Certification: Compliant with IEC 61508/61511 standards, a single unit meets SIL 2 safety requirements, and redundant configuration can satisfy SIL 3 requirements, applicable to Safety Instrumented Systems. 40 Items of Self-Diagnosis: Built-in comprehensive diagnostic functions, including continuous monitoring of the sensor itself, which can instantly distinguish sensor faults from the state of no process changes. Powerful Practical Functions: 10-segment signal curve characterization: It can perform nonlinear correction on 4～20mA analog output signals, and is especially suitable for occasions requiring linearization compensation such as tank metering and flow measurement. Built-in Display Meter: It can display measured values, alarm codes, bar graphs and other information, supports Local Parameter Setting (LPS), and allows basic configuration without a handheld operator. Extended calibration interval: Excellent long-term stability helps reduce maintenance frequency and lower life cycle costs. Multiple Communication Protocols: Supports various mainstream communication protocols such as HART, BRAIN, FF Fieldbus, and PROFIBUS PA, enabling easy integration into various control systems. For quotation, send the complete order code, quantity and operating conditions. Specifications and available options depend on the ordered configuration.