Description
Foxboro RTT20-I1SNQFD
Technical Specifications
- Product Type: Intelligent Field Transmitter.
- Output Signal: 4-20 mA with HART protocol.
- Power Supply: 11.5 to 42 VDC (loop-powered).
- Communication: HART Revision 5/6/7.
Functional Features
- High Accuracy: Exceptional precision and long-term stability, minimizing recalibration frequency.
- Smart Diagnostics: Continuous self-diagnostics and device health monitoring via HART.
- Remote Configuration: Allows range adjustment, damping, and unit conversion from the control room or locally.
- Rugged Construction: Designed for harsh industrial environments with wide temperature compensation.
Application Scenarios
Used for precise measurement of temperature, pressure, level, or flow in critical process loops across oil and gas, chemical, and power industries.
Performance Parameters
- Accuracy: Typically ±0.05% of span.
- Response Time: Configurable damping and update rates.
- Protection Rating: IP66 / NEMA 4X.
Material Composition
316L stainless steel wetted parts. Aluminum or stainless steel housing with epoxy powder coat for corrosion resistance.
Structural Characteristics
Traditional or low-profile coplanar housing. Optional local LCD display and configuration buttons. Standard 1/2-14 NPT or M20 conduit entries.
Working Principle
The sensor element detects the process variable, which is conditioned and digitized by an internal microprocessor. The microprocessor applies linearization, temperature compensation, and scaling, then generates a precise 4-20 mA current proportional to the measured value, with HART digital data superimposed.
Installation Requirements
Mount directly on process or via impulse lines. Use shielded twisted-pair cable. Ensure proper grounding and avoid high-EMI areas.
Usage Precautions
Verify sensor type and range matches the application. Follow hazardous area guidelines when opening the housing. Perform zero trim only when the process is at true zero.
