UT2800-1 Yokogawa

UT2800-1 Yokogawa Filter Modules

Product  Description：

Yokogawa Filter Modules are high-reliability hardware components designed primarily for the CENTUM Distributed Control System (DCS) and the ProSafe-RS Safety Instrumented System. These modules serve a critical role in signal conditioning by suppressing electromagnetic interference (EMI), radio frequency interference (RFI), and high-frequency process noise from field wiring before the signals reach sensitive analog or digital I/O modules. By cleaning up electrical noise, these modules prevent data corruption, false trips, and measurement inaccuracies in mission-critical process loops.

Product Parameters

The technical baseline of a Yokogawa Filter Module centers around signal integrity and rugged isolation metrics:

• Input and Output Types: Tailored to support standard 4-20mA current loops, 1-5V DC voltage signals, thermocouple extensions, and RTD temperature inputs.

• Cut-off Frequency: Features low-pass filter characteristics with a typical cut-off frequency optimized between 5Hz and 10Hz to aggressively suppress 50Hz and 60Hz power line noise without delaying process variables.

• Attenuation Rate: High noise rejection capability, typically offering common-mode rejection ratios (CMRR) greater than 120 decibels and normal-mode rejection ratios (NMRR) greater than 60 decibels.

• Dielectric Strength: Provides robust galvanic isolation, often rated at 1500V AC or 2000V AC for one minute between the input, output, and power supply terminals.

• Ambient Operating Conditions: Engineered to function reliably in a temperature range spanning from -20°C to 60°C and a relative humidity range of 10 percent to 90 percent non-condensing.

• Installation Type: Designed for high-density mounting on dedicated baseplates or DIN rails, utilizing robust multi-pin connectors to interface with the DCS backplane.

Product Advantages

Yokogawa Filter Modules provide significant strategic benefits for industrial plants requiring continuous uptime:

• Enhanced Measurement Stability: By filtering out high-frequency transient spikes and harmonic distortions caused by heavy machinery, these modules ensure steady and accurate process variable readings.

• System Protection: Acts as an electrical barrier that absorbs high-voltage surges from the field, isolating the fault and protecting expensive central processor and I/O units from catastrophic damage.

• High Component Reliability: Built using industrial-grade, long-life solid-state components that undergo rigorous quality testing, achieving excellent Mean Time Between Failures (MTBF) ratings in line with Yokogawa's safety standards.

• True Plug-and-Play Integration: Fully compatible with the CENTUM and ProSafe-RS hardware layouts, requiring no manual calibration or hardware trimming during installation.

• Corrosion Resistance: Many models come standard with severe-ambient conformal coating (G3 class rating), making them highly resistant to corrosive gases like hydrogen sulfide and sulfur dioxide found in heavy industries.

Product Applications

These modules are deployed across demanding process automation environments where signal loss or false data can have severe consequences:

• Oil and Gas Refining: Filtering analog signals from custody transfer flowmeters and pressure transmitters located near large, noise-generating pumps and compressors.

• Chemical and Petrochemical Plants: Conditioning temperature loops for critical distillation columns and exothermic reactors where rapid, noise-free temperature tracking is vital for safety.

• Power Generation Stations: Safeguarding generator and turbine monitoring circuits from extreme electromagnetic fields generated by high-voltage switchgear and transformers.

• Offshore Production Platforms: Protecting remote I/O stations from the marine atmosphere and high RF interference originating from communication arrays and radar equipment.

• Pharmaceutical Production: Maintaining the integrity of micro-ampere level pH and analytical sensor signals in bio-reactors where precision is mandatory for batch quality.

Important Precautions

To preserve the conditioning performance and ensure safe operation, the following practices must be implemented:

• Grounding Integrity: The effectiveness of the filter module relies entirely on a high-quality, low-impedance instrument ground connection. Ensure the cabinet ground bar is connected to a dedicated earth ground system.

• Signal Loop Configuration: Never exceed the maximum input voltage or current ratings specified for the module. Overdriving the inputs will saturate the filtering circuitry and lead to clipped or completely unresponsive output signals.

• Cable Routing: Keep unconditioned field wiring physically separated from the filtered clean wiring inside the cabinet enclosure to prevent noise from cross-coupling back into the system.

• Channel Mapping Compatibility: Ensure that the specific module type matches the field sensor characteristics. For example, a filter module designed for a thermocouple will fail to process a 4-20mA loop due to impedance mismatches.

• Power-Down Maintenance: While some Yokogawa systems allow hot-swapping, always check the specific safety system instructions before pulling a module under power to prevent open-circuit alarms or triggering a false shutdown in safety-instrumented functions.

The structure and details of the product：

Our services：

Shipping Port:  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

Warranty: one year

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