Key Benefits and Advantages
Exceptional High Vacuum Performance: These systems are specifically optimized for deep vacuum applications. Capable of maintaining accurate readings as low as 0.013 kPa abs, they are the industry standard for monitoring vacuum distillation units and high-vacuum chemical processes, ensuring consistent product quality and safety.
Protection Against Extreme Process Conditions: The diaphragm seal acts as a critical barrier, protecting the transmitter from high-temperature fluids, corrosive chemicals, and viscous liquids that could clog or damage a standard sensor. This isolation significantly extends the service life of the equipment and reduces maintenance frequency.
Rapid and Reliable Response: Despite the isolation provided by the diaphragm and fill fluid, the EJXC81A and EJAC81E achieve a fast response time of 200 ms. This agility allows for real-time monitoring and control of dynamic vacuum processes, preventing fluctuations that could impact yield.
Unmatched Measurement Stability: Utilizing Yokogawa’s digital DPharp sensor technology, these systems offer high accuracy and long-term reliability. They are designed to minimize the effects of ambient temperature changes on the capillary and seal, providing a consistent absolute pressure baseline regardless of environmental shifts.
Versatile Performance Tiers: The series offers two performance levels to match specific application needs. The EJXC81A provides premium, high-performance sensing for the most critical loops, while the EJAC81E offers standard excellence and rugged reliability for general industrial absolute pressure monitoring.
Simplified Installation for Complex Piping: The diaphragm seal design allows the transmitter to be mounted away from the direct heat or vibration of the process pipe. Various flange sizes, materials, and capillary lengths are available to tailor the system to your specific tank or pipe configuration.
Technical Properties
Operation: Absolute pressure isolation using silicon resonant sensor technology (DPharp).
Service: High-vacuum and High-temperature measurement for Liquid, Gas, and Steam.
Vacuum Capability: Suitable for use down to 0.013 kPa abs.
Response Time: 200 ms.
Performance Grades: EJXC81A (Premium Performance); EJAC81E (Standard Excellence).
Diaphragm Material: Multiple alloy options available for chemical compatibility.
Safety Standard: Built to meet global industrial safety and certification requirements.
Field of Application
The EJXC81A and EJAC81E are the preferred choice for absolute pressure measurement in applications requiring high vacuum stability and process media isolation.
Primary Industries and Uses:
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Refining: Precise absolute pressure monitoring in vacuum distillation columns to optimize fuel separation.
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Petrochemical: Managing pressure in high-temperature reactors where process fluids are highly corrosive or viscous.
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Pharmaceutical: Reliable vacuum measurement for lyophilization (freeze-drying) and sterile evaporation processes.
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Food and Beverage: Controlling vacuum levels in concentration and dehydration units to preserve flavor and nutrients.
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Chemical Manufacturing: Monitoring absolute pressure in batch reactors and storage vessels handling toxic or sensitive materials.
