Honeywell 51202942-200 Smart Transmitter Interface (STI)

The Honeywell 51202942-200 Smart Transmitter Interface (STI) redefines precision and connectivity in process automation. Designed for HART-enabled systems, it ensures stable signal transmission, low noise, and superior long-term reliability across diverse industrial environments.

Key Highlights

• Engineered by Honeywell for seamless integration in advanced monitoring and control systems.
• Wide 18–36V DC input range ensures consistent performance under variable plant conditions.
• Delivers up to 25W maximum output power, enabling stable operation of connected transmitters.
• Compact and lightweight form factor: 150 × 75 × 30 mm, ideal for dense panel installations.
• Operates reliably within –10°C to +70°C ambient temperature range.
• Fully supports HART data communication for remote diagnostics and parameter configuration.

Extended Technical Specifications

• Brand/Manufacturer: Honeywell
• Model:51202942-200
• Input Voltage: 18–36V DC, overvoltage protected
• Output Power: 25W nominal, overload limited at 28W
• Transmission Frequency: 1 kHz ± 0.5%
• Signal Accuracy: ±0.1% of span, optimized for analog-to-digital conversion
• Response Time: 20 ms typical for fast signal processing
• Mounting Type: Panel Mount with secure screw terminals
• Insulation Resistance: 100 MΩ minimum at 500V DC
• Dielectric Strength: 1,500V AC for 1 minute between input and output
• Cooling System: Fanless — heat dissipated through aluminum enclosure
• Humidity Tolerance: Up to 95% RH, non-condensing
• Ingress Protection: IP20 rated for control cabinet use
• Mean Time Between Failure (MTBF): Over 100,000 hours
• Warranty: 12 months from date of purchase

Product Advantages

• Superior noise immunity for accurate readings in electrically harsh environments.
• Simple wiring and configuration minimize setup time and maintenance costs.
• Supports real-time diagnostics through integrated HART communication protocol.
• Compact design saves valuable control panel space while reducing heat buildup.
• Reliable long-term operation without active cooling or mechanical wear.

Installation & Usage Notes

• Mount the 51202942-200 unit vertically on a control panel for optimal airflow.
• Connect DC power using shielded cables to minimize electrical interference.
• Integrate HART lines via standard 2-wire or 4-wire configurations.
• Always verify grounding continuity before commissioning to ensure safety and accuracy.

Packaging & Shipping

• Standard package includes 1 × Honeywell 51202942-200 Smart Transmitter Interface, quick installation guide, and mounting hardware.
• Each unit is foam-protected and sealed in an antistatic bag to prevent handling damage.
• Global express delivery via FedEx, UPS, or DHL with full tracking support.

FAQ

• Q: Can this module interface with legacy transmitters?
  A: Yes, it supports backward compatibility with HART-based and analog transmitters.
• Q: Does the STI need forced ventilation?
  A: No, it uses a fanless aluminum body for passive heat dissipation.
• Q: What are the typical delivery options?
  A: We ship through FedEx, UPS, and DHL with express international coverage.
• Q: How long is the warranty?
  A: Each Honeywell 51202942-200 comes with a 12-month limited warranty.

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