Technical Specifications:

• Number of Channels: 8 channels (configurable as 4 TC + 4 RTD, or 8 TC, or 8 RTD, or mixed)
• Input Types:
  • Thermocouple: K, J, T, E, R, S, B, N, L, U, W
  • RTD: Pt100 (JIS/IEC), JPt100, Cu50, Ni120, JPt1000
  • DC Voltage: 0–1V, 0–5V, 1–5V
  • DC Current: 0–20mA, 4–20mA
• A/D Resolution: 16-bit
• Scan Rate: 250 ms per 8 channels (group scan)
• Isolation: 500V AC between channels and backplane
• HART Communication: HART 7 protocol, 1200 bps
• Accuracy:
  • TC: ±0.1% of span or ±1°C (whichever is greater)
  • RTD: ±0.1% of span or ±0.3°C (whichever is greater)
  • DC mA/V: ±0.1% of span
• Cold Junction Compensation: Built-in, accuracy ±1°C
• Power Consumption: ≤ 3.0W
• Operating Temperature: -10°C to +60°C
• Dimensions: Eurocard format, 160 mm × 233 mm × 20 mm

Functional Features:

• HART communication enables remote configuration, diagnostics, and range setting
• Per-channel burnout detection (high/low) with configurable alarm action
• Programmable per-channel filtering (deadband, damping)
• Linearization tables stored in module memory for TC and RTD
• LED status indicators per channel (green/yellow/red)
• Compatible with FAST/TOOLS R3.09 and later

Structural Characteristics:

• Form factor: Eurocard (IEEE 299), single-width
• Connector: Removable spring-clip terminal block (32 terminals)
• Weight: approximately 0.35 kg
• Status: 8 channel LEDs + power LED + communication LED

Working Principle:
Each input channel routes the signal through a multiplexer to a single 16-bit A/D converter. The microcontroller on the module applies cold junction compensation (for TC), linearization (from stored polynomial tables), and scaling. Digital data is sent to the FAST/TOOLS controller via the Vnet/IP or Vnet backbone. HART communication occurs over the same twisted-pair wiring using FSK modulation at 1200/2200 bps.

Advantages & Highlights:

• HART-enabled provides field device diagnostics without additional wiring
• Universal input accepts all major sensor types in a single module
• High isolation (500V AC) ensures noise-free measurements
• Per-channel configurability maximizes flexibility in mixed-signal applications
• Hot-swap compatible in FAST/TOOLS system

Applicable Industries:
Oil & Gas, Chemical, Petrochemical, Power, Water & Wastewater, Mining, Pharmaceutical

Installation Requirements:

• Install in FAST/TOOLS I/O station (e.g., NFAS, NFAS-R)
• Use shielded twisted-pair cables: for TC use extension-grade wire; for RTD use 3-wire or 4-wire configuration
• Ground cable shields at control room end only
• Verify slot address and channel assignment in FAST/TOOLS Engineering Station (FES)
• Ambient temperature: -10°C to +60°C, relative humidity: 10–85% RH (no condensation)

Usage Precautions:

• Do not exceed 50V DC on any input terminal
• For 3-wire RTD, ensure all three wires are connected to the correct terminals; mismatched wiring causes significant error
• HART termination resistor: 250 Ω required (typically installed in the I/O station or safety barrier)
• Do not insert/remove module with system power on unless hot-swap is confirmed safe for the specific I/O station
• Calibrate annually using Yokogawa CA series calibrator or equivalent