Yokogawa ADM55-S1 Analog Input Module

Description

Yokogawa ADM55-S1 Analog Input Module

Product Dimensions：

Yokogawa Electric Corporation is a global leader in industrial automation, test and measurement, and control systems. Among their extensive portfolio—which includes distributed control systems (DCS like CENTUM VP), flowmeters, and analyzers—their flagship EJX and EJA Series Differential Pressure (DP) Transmitters are the most widely recognized industry standard worldwide.

Product Detailed Description

Yokogawa pressure transmitters utilize proprietary DPharp (Differential Pressure High Accuracy Resonator) digital sensor technology. Unlike traditional analog or capacitive sensors that convert capacitance to analog signals, the DPharp sensor outputs a direct digital frequency signal proportional to pressure. This eliminates A/D conversion errors, resulting in exceptional measurement accuracy, high speed, and long-term stability.

Technical Parameters (EJX / EJA Series General Specification)

Product Advantages

• Unmatched Long-Term Stability: Thanks to the digital crystal resonant sensor, drift over time is exceptionally low, drastically reducing calibration and maintenance frequency.
• Multi-Sensing Capability: Many models (such as the EJX series) can measure both differential pressure and static pressure simultaneously, providing dual process variables from a single instrument.
• Robust Dual-Chamber Housing: Separates the electronics compartment from the terminal compartment, protecting internal circuits from moisture, dust, and corrosive process fumes.
• Quick Response Time: Digital processing allows for extremely fast response speeds, crucial for safety loops and rapid pressure transient monitoring.
• Advanced Diagnostics: Built-in sensor health checks can detect plugging in impulse lines or abnormal process conditions before failure occurs.

Important Considerations (Precautions)

• Mounting Orientation: Always perform a Zero Adjustment (zero-point calibration) after the transmitter is physically mounted in its final operating position and filled/pressurized, to correct for any gravitational zero shift caused by the diaphragm weight.
• Diaphragm Protection: Never touch or press the thin metallic isolating diaphragms with hard objects or tools. Damage to the diaphragm will ruin the sensor module.
• Chemical Compatibility: Verify that the wetted parts material (e.g., 316SS vs. Hastelloy or Tantalum) is fully compatible with corrosive process fluids to prevent premature pitting or leaks.
• Overpressure Limits: Ensure maximum working pressure and potential pressure spikes do not exceed the transmitter’s maximum overpressure rating to avoid permanent sensor deformation.

Product Applications

Yokogawa pressure and flow transmitters are deployed across critical infrastructure and process industries globally:

• Oil & Gas: Wellhead monitoring, custody transfer measurement, pipeline pressure monitoring, and separator level control.
• Chemical & Petrochemical: Reactor pressure control, corrosive fluid flow measurement, and distillation column level tracking.
• Power Generation: Boiler drum level control, steam flow measurement, and condenser vacuum monitoring.
• Water & Wastewater: Effluent flow rate tracking and lift station pressure management.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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