FOXBORO RH916TA

Description

Product Description

Product Parameters

• Brand/Model: FOXBORO RH916TA
• Core Analog Input Parameters
  • Input Channels: 16 isolated channels (8 pairs of differential inputs)
  • Configurable Signal Types:
    • RTD: Pt100, Pt1000, Cu100, Ni1000 (2/3/4-wire)
    • Thermocouple: J, K, T, E, R, S, B, N
    • Voltage: 0-5V, 0-10V, ±5V, ±10V
    • Current: 4-20mA (loop-powered or externally powered)
  • Resolution: 24-bit (RTD/thermocouple), 16-bit (voltage/current)
  • Accuracy: ±0.1°C (Pt100 RTD), ±0.5°C (thermocouple), ±0.02% full scale (4-20mA)
  • Isolation: 1500V AC channel-to-channel, 2500V AC channel-to-ground
• System & Diagnostic Parameters
  • Compatible Systems: Foxboro I/A Series DCS (FCP270, FCP280), Foxboro Evo™ DCS
  • Diagnostic Functions: Open-wire detection, overrange/underrange alerts, cold-junction failure detection, LED status indicators (per channel group)
  • Cold-Junction Compensation: ±0.1°C accuracy (internal sensor)
  • Configuration: Foxboro I/A Series Workbench, Evo™ Engineering Studio
• Environmental & Physical Parameters
  • Operating Temperature: -20°C ~ +60°C
  • Storage Temperature: -40°C ~ +85°C
  • Vibration Resistance: 5g (10-2000Hz, IEC 60068-2-6)
  • Shock Resistance: 30g (11ms half-sine wave)
  • Power Supply: 24V DC (from DCS chassis), power consumption ≤ 15W
  • Protection Grade: IP20 (rack-mount installation)
  • Dimensions: 100mm (W) × 200mm (H) × 150mm (D) (I/A Series chassis-compatible)
  • Installation: Hot-swappable (Foxboro certified chassis)

Advantages & Features

1. Multi-Signal Type Flexibility: FOXBORO RH916TA supports RTD, thermocouple, voltage, and current inputs on the same module, eliminating the need for separate input modules and reducing chassis space requirements by up to 50% in mixed-sensor applications.
2. High-Precision Temperature Measurement: Advanced cold-junction compensation and 24-bit resolution for RTD/thermocouple inputs ensure accurate temperature data acquisition—critical for processes like chemical reactor temperature control and power plant boiler monitoring.
3. Comprehensive Diagnostics: Open-wire detection, overrange alerts, and cold-junction failure monitoring enable proactive identification of sensor faults, reducing mean time to repair (MTTR) and minimizing process disruptions.
4. Hot-Swappable Design: The module supports hot-swappable replacement without DCS shutdown, allowing maintenance during continuous operation—essential for mission-critical applications such as oil refinery distillation unit control.

Application Fields & Cases

1. Chemical Plant Reactor Temperature Monitoring: A petrochemical facility deployed FOXBORO RH916TA modules in its Foxboro I/A Series DCS to monitor 16 reactor temperature points (K-type thermocouples) per module. The module’s cold-junction compensation ensured ±0.5°C accuracy, enabling precise control of exothermic reactions and reducing product waste by 12%.
2. Power Generation Boiler Control: A coal-fired power plant used FOXBORO RH916TA to acquire signals from Pt100 RTDs (boiler tube temperatures) and 4-20mA pressure transmitters. The module’s multi-signal support reduced hardware count by 40%, while open-wire detection alerted operators to faulty RTD wiring before tube damage occurred.
3. Oil Refinery Distillation Unit Monitoring: A major oil refinery integrated FOXBORO RH916TA into its Foxboro Evo™ DCS to monitor distillation column temperatures (S-type thermocouples) and flow rates (4-20mA). Hot-swappable installation allowed module replacement during production runs, avoiding costly shutdowns and ensuring consistent product quality.

Competitor Comparison

Selection Suggestions & Precautions

1. Selection Suggestions: FOXBORO RH916TA is ideal for Foxboro I/A Series/Evo™ DCS users needing high-density, multi-signal analog input (e.g., chemical, power generation). For Emerson DeltaV DCS, choose DeltaV AI modules; for Siemens S7-400 systems, select combined RTD/thermocouple and voltage/current modules.
2. Precautions:
   • Configure signal types (RTD/thermocouple/4-20mA) per channel via Foxboro engineering software to match connected sensors—incorrect settings will cause measurement errors.
   • Use shielded twisted-pair cables for thermocouple/RTD wiring to minimize EMI interference, especially in high-noise environments (e.g., near motors or switchgear).
   • Verify cold-junction compensation is enabled for thermocouple inputs to ensure accurate temperature measurements.
   • Follow Foxboro hot-swappable procedures when replacing the module to avoid disrupting the DCS chassis or other modules.
   • Calibrate RTD/thermocouple channels annually (per industry standards) to maintain long-term accuracy.

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