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1794-IRT8 - 8-Point Temperature Input - Industrial Automation Isolated Rugged Thermocouple Module
| MOQ: | 1 |
| Price: | Negotiable |
| Standard Packaging: | 50*50*50mm |
| Delivery Period: | 3-7 |
| Payment Method: | T/T |
| Supply Capacity: | 1/piece in stock |
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The Allen-Bradley 1794-IRT8 FLEX I/O™ Hybrid Temperature Module delivers precision thermocouple (TC) and RTD measurements for industrial process control. Designed for Rockwell's distributed FLEX platform, this IP67-rated module features dual 24-bit delta-sigma ADCs and supports 8 configurable channels (mix RTD/TC types per channel). Its epoxy-sealed housing (-40°C to +70°C) withstands high-pressure washdowns, chemicals, and corrosive atmospheres. Integrated cold junction compensation (CJC) achieves ±0.25°C accuracy, while galvanic isolation (1,500V AC channel-to-backplane) eliminates ground loops. Studio 5000® enables auto-configuration of sensor types, scaling, and NAMUR NE43 diagnostics for predictive maintenance.
- Input Types: RTD (Pt100/200/500/1000, Ni100/120, Cu10) / TC (J/K/T/E/R/S/N/C)
- Accuracy: ±0.05°C (RTD) / ±0.1°C (TC) @ 25°C
- Resolution: 0.001°C effective (24-bit ADC)
- Excitation Current: 0.25mA/1.0mA software-selectable
- Lead Resistance Compensation: Auto-corrects ≤50Ω per wire
- Response Time: ≤250ms per channel
- Isolation: 300V AC channel-channel / 1,500V AC field-backplane
- Certifications: SIL 2 (IEC 61508), ATEX II 3G, IECEx, DNV-GL
- Pharmaceutical Sterilization: Autoclave validation with FDA 21 CFR Part 11 data logging
- Oil & Gas Refining: Pipeline Pt100 monitoring in ATEX Zone 1 hazardous areas
- Food Processing: Retort temperature profiling (IP69K washdown compliance)
- Power Generation: Turbine bearing Ni120 sensors with ±0.1°C stability
- Semiconductor: Diffusion furnace R-type thermocouples (±0.1°C repeatability)
- Chemical Reactors: Exothermic reaction control via 4-wire Pt1000 measurement
- HVAC Systems: Critical airflow balancing with Cu10 RTDs
- Hybrid Channel Flexibility: Mix RTDs/TCs simultaneously (no module swapping)
- Zero Calibration Drift: <±5ppm/°C with auto-self-calibration
- NAMUR NE43 Compliance: Detects 0.2Ω wire degradation before failure
- Extreme Environment Tolerance: Operates under 95% humidity + salt spray (ISO 9227)
- Wiring Economy: Eliminates signal conditioners ($3k+ savings per system)
- Space Optimization: 8 channels in 42mm DIN width (50% smaller than alternatives)
- Safety Integration: SIL 2 functional safety without external barriers
| Attribute | Specification |
|---|---|
| Product Series | FLEX I/O™ |
| Module Type | 8-Channel Isolated Thermocouple/mV Input |
| Signal Types | • Thermocouples: J, K, T, E, R, S, B, N, C • Voltage: ±50mV, ±100mV |
| Resolution | 16-bit (including sign) |
| Accuracy | ±0.1% of span @ 25°C (±1.5°C for TC types) |
| Update Rate | 60 ms/channel (all 8 ch. in 480 ms) |
| CJC (Cold Junction Comp) | Integrated per-channel sensor (±1°C accuracy) |
| Input Impedance | >1 MΩ |
| Overrange Protection | ±300 mV continuous |
| Common-Mode Rejection | 120 dB @ 50/60 Hz |
| Isolation | • Channel-to-channel: 250V AC • Field-to-logic: 30V DC |
| Open Wire Detection | Supported (detects >10 kΩ discontinuity) |
| Filtering | Software-selectable: 10/50/60/250 Hz |
| Power Consumption | • Backplane: 150 mA @ 5V DC • Field: 24V DC @ 45 mA (via TB) |
| Connection | 1794-TB3/TB3S terminal base (16-pin) |
| Operating Temperature | -40°C to 70°C (-40°F to 158°F) |
| Calibration | Software calibration via Studio 5000® |
| Status Indicators | • Module: Green/Red (OK/Fault) • Per-channel: Green (Active) |
| Dimensions | 87 × 35 × 80 mm (3.43 × 1.38 × 3.15 in) |
| Certifications | UL, CE, c-ULus, ATEX/IECEx (Zone 2), RoHS |
| Compatibility | 1794-AENT/AENTR adapters, ControlLogix®, CompactLogix™ |
| Software | Studio 5000 Logix Designer® v24+ |
Xiamen ZhiCheng Automation Technology Co., Ltd is a leading global supplier of control system components. We specialize in control systems and drives.
With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts which make sure that all jobs are perfectly executed.
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