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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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| Attribute | Value |
|---|---|
| Max Power Consumption | 3.5 W |
| Output Current | 2.3 A |
| Type | module |
| Package | Origin |
| Analog Inputs | Thermocouple |
| Module Type | Digital DC Input Module |
| Drive Type | Fan & Pump |
| Manufacturer | Allen Bradley |
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
- Sensor Linearization: Programmable Callendar-Van Dusen coefficients for custom RTDs
- Dual-ADC Validation: Cross-checks measurements with <0.02°C deviation tolerance
- Predictive Maintenance: Tracks sensor drift via embedded trend logging
- Alarm Hierarchy: Configurable thresholds with 1ms timestamped deviations
- Burnout Detection: 210µA current for 4-20mA transmitter diagnostics
- Data Mirroring: Syncs to redundant modules via EtherNet/IP™ produced tags
- HART Pass-Through: Supports digital diagnostics via 1794-CE3 communications card
- Firmware Security: Signed updates prevent unauthorized modifications
| 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.
More about us, you can view our official website: www.zcsensors.com
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