Key Benefits and Advantages
Advanced Mass Flow Compensation: The EJX910A is not just a pressure sensor; it is a sophisticated flow computer. The mass flow version performs real-time compensation for changes in density, viscosity, and the gas expansion factor. This ensures a remarkable ±1.0% mass flow rate accuracy (even with uncalibrated orifices), making it ideal for custody transfer and high-precision steam or gas measurement.
Consolidated Multi-Sensing Performance: For applications requiring raw data, the multi-sensing version provides three measurements in one: ±0.04% differential pressure accuracy, ±0.1% static pressure accuracy, and ±0.9°F external temperature accuracy. This consolidation reduces the number of transmitters required, lowering both hardware costs and potential leak points.
Broad Primary Device Support: The transmitter is designed for maximum versatility, supporting Orifice, Nozzle, and Venturi primary devices as standard. When using the HART 7 protocol, support is expanded to include Multiport Averaging Pitot and Cone meters, allowing for integration into almost any existing flow infrastructure.
Certified Safety and Reliability: Safety is integrated into the core of the EJX910A. It is TUV SIL 2/3 certified, ensuring it meets the rigorous standards required for Safety Instrumented Systems (SIS). Its robust design provides long-term stability and resistance to overpressure, maintaining calibration in volatile process conditions.
Enhanced Output and Totalization: To assist with local process management, the EJX910A features a mass flow totalizer with ±1.0% accuracy. Additionally, it provides pulse or contact outputs, allowing for direct integration with batch controllers, counters, or alarm systems without needing an intermediate PLC.
Simplified System Architecture: By combining three transmitters and a flow computer into a single unit, the EJX910A significantly simplifies the engineering and wiring of the control loop. This “all-in-one” approach reduces the total cost of ownership while providing deeper diagnostic insights into the process health.
Technical Properties
Operation: Multivariable digital sensing using DPharp silicon resonant technology.
Flow Accuracy: ±1.0% of mass flow rate (using uncalibrated orifice).
Differential Pressure Accuracy: ±0.04% of span.
Static Pressure Accuracy: ±0.1% of span.
External Temperature Accuracy: ±0.9°F (±0.5°C).
Safety Rating: TUV SIL 2 / SIL 3 Certified.
Output Options: 4 to 20 mA DC with HART (5/7) or FOUNDATION Fieldbus; Pulse/Contact output available.
Compensation: Fully compensated mass flow calculation for liquids, gases, and steam.
Field of Application
The EJX910A is the premier choice for applications where mass flow accuracy and reduced process penetrations are critical.
Primary Industries and Uses:
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Oil and Gas: High-accuracy gas flow measurement and wellhead monitoring where static and differential pressure are both required.
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Chemical and Refining: Compensated steam flow measurement and monitoring of reactors involving complex fluid densities.
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Power Generation: Main steam flow and feedwater flow measurement to optimize boiler efficiency.
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Pharmaceutical and Food: Precision mass flow for high-value liquid ingredients and sterile steam systems.
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Energy Management: Monitoring compressed air and steam distribution across large industrial sites for leak detection and cost allocation.
