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Yokogawa RAKD41-G4SS-31VSE-T80NNN/K8/KS1 Differential Pressure Transmitter
Yokogawa RAKD41-G4SS-31VSE-T80NNN/K8/KS1
Differential Pressure Transmitter

The Yokogawa RAKD41-G4SS-31VSE-T80NNN/K8/KS1 is a high-performance differential pressure transmitter from Yokogawa's DPharp EJX series, configured with a remote diaphragm seal system. This sophisticated instrument is designed for precise level, flow, and differential pressure measurements in demanding process applications where direct mounting is impractical or process media requires isolation.
Key Features and Product Highlights
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Advanced Sensor Technology: Features Yokogawa's proprietary silicon resonant sensor technology, providing exceptional accuracy (±0.04%), stability, and reliability for critical process measurements.
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Remote Diaphragm Seal System: Includes a capillary and diaphragm seal to isolate the transmitter from process media, ideal for high-temperature applications, viscous fluids, corrosive media, or slurry services.
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Comprehensive Safety Certification: SIL 2 (Safety Integrity Level) certification according to IEC 61508 standards, making it suitable for use in safety instrumented systems.
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Digital Communication Capability: Supports 4-20mA analog output with HART 7 protocol communication, enabling advanced diagnostics, remote configuration, and seamless integration with modern control systems.
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Robust Construction: Designed for harsh industrial environments with excellent vibration immunity, electromagnetic compatibility, and resistance to challenging process conditions.
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Advanced Diagnostics: Integrated self-diagnostics and condition monitoring capabilities help predict maintenance needs and prevent unexpected downtime.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa Electric Corporation |
| Model | RAKD41-G4SS-31VSE-T80NNN/K8/KS1 |
| Product Series | DPharp EJX |
| Measurement Type | Differential Pressure |
| Accuracy | ±0.04% of span |
| Output Signal | 4-20mA DC with HART 7 protocol |
| Power Supply | 10.5-42V DC (standard) |
| Process Connection | Remote diaphragm seal system |
| Fill Fluid | Silicone oil or alternative (based on configuration) |
| Capillary Length | Custom length as specified in ordering code |
| Safety Certification | SIL 2 (IEC 61508) |
| Electrical Connection | 1/2" NPT conduit |
| Display | Integral LCD indicator (optional) |
| Protection Rating | IP67, NEMA 4X |
Applications
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Chemical Processing: Level measurement in reactors, columns, and vessels handling corrosive or hazardous chemicals
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Oil & Gas Production: Flow and level measurement in offshore platforms, refineries, and pipeline applications
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Power Generation: Differential pressure flow measurement in boiler systems, feedwater control, and steam lines
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Pharmaceutical Manufacturing: Precise level control in bioreactors and process vessels requiring hygienic installation
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Food & Beverage: Level measurement in tanks and vessels with sanitary requirements or viscous products
Why Choose Yokogawa DPharp EJX Transmitter?
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Unmatched Accuracy: Industry-leading measurement precision ensures optimal process control and quality
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Long-Term Stability: Minimal drift over time reduces calibration frequency and maintenance costs
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Application Flexibility: Configurable with various diaphragm materials, flange ratings, and capillary options
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Global Standards Compliance: Certified for use in hazardous areas (ATEX, IECEx) and meets international quality standards
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Proven Reliability: Yokogawa's reputation for quality and extensive field experience in process automation
Yokogawa RAKD41-G4SS-31VSE-T80NNN/K8/KS1 differential pressure transmitter with remote seal. SIL 2, 4-20mA HART, for level & flow in harsh process conditions.
