Function Features:

• 8 input channels per module
• RTD input: Pt100 (IEC 60751), JPt100 (JIS C1604) — 3-wire connection (060N)
• TC input: Type K, J, T, E, R, S, B, N (configurable via software)
• 24-bit A/D converter per channel
• Channel-to-channel isolation: 500 V AC
• Channel-to-bus isolation: 500 V AC
• Cold junction compensation (CJC) for TC inputs
• Built-in linearization for all standard TC types
• LED per-channel status indicators

Technical Specifications:

Material Composition:

• Housing: Flame-retardant ABS plastic (UL94 V-0)
• Terminal blocks: Phosphor bronze with gold plating
• PCB: FR-4 with conformal coating
• Connector: UTAdvanced-compatible edge connector (64-pin)

Structure Characteristics:

• DIN rail or backplane mounting (UTAdvanced chassis)
• Screw-terminal blocks for each of 8 channels (16 terminals total: 3 per RTD or 2 per TC)
• DIP switches / software configuration for input type selection
• LED indicators per channel (green = normal, red = fault)
• Channel group configuration via UTAdvanced engineering software

Working Principle:
Each channel contains a precision constant current source (typically 1 mA for RTD) that excites the sensor. For 3-wire RTD (060N), two wires carry the excitation current and the third wire senses the voltage across the RTD, automatically compensating for lead wire resistance (up to 10 Ω per lead). The voltage is digitized by a 24-bit delta-sigma A/D converter and transmitted to the UTAdvanced controller via the system bus (Vnet/IP). For TC inputs, the millivolt signal is measured, and cold junction compensation is applied using an internal temperature sensor. 500 V AC isolation is maintained between all channels and the system bus using optical isolators or isolation amplifiers.

Advantages & Highlights:

• 8 channels per module reduces system cost, wiring, and panel space
• 3-wire RTD compensation eliminates lead resistance errors — no need for 4-wire configuration
• 24-bit resolution provides 0.01°C granularity for RTD
• 500 V channel isolation ensures noise immunity in high-EMI environments
• UTAdvanced compatibility enables seamless integration with CENTUM VP/CS3000 migration paths

Applicable Industries:

• Power Generation (steam temperature, feedwater temperature)
• Oil & Gas (wellhead monitoring, pipeline temperature)
• Chemical Processing (reactor temperature, distillation)
• Pharmaceutical (cleanroom temperature, lyophilizer control)
• Food & Beverage (pasteurization, cold chain monitoring)
• Metallurgy (furnace temperature, annealing ovens)

Installation Requirements:

• Install in UTAdvanced DCS chassis with adequate ventilation
• Route RTD/TC cables away from power cables (min 100 mm separation)
• Use 3-wire shielded cable for RTD (max lead resistance 10 Ω per wire, max length 100 m)
• Use TC-grade cable (Type K: 24 AWG chromel/alumel, max length 50 m)
• Ground shield at controller end only (single-point grounding)
• Torque terminal screws to 0.5 N·m (4.4 lbf·in)

Usage Precautions:

• Verify RTD type matches module configuration (Pt100 vs JPt100 have different curves)
• Do not apply voltage > 30 V DC to any input terminal
• Do not disconnect TC while module is energized (SBA alarm will trigger)
• Maximum 3-wire lead resistance: 10 Ω per wire (exceeding this causes measurement error)
• Re-calibrate annually for SIL-rated or safety-critical applications
• Do not mix RTD and TC on the same channel — configure all 8 channels as one type per module