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InquiryICS Triplex T8431 Trusted TMR 24 VDC Analogue Input Module
The ICS Triplex T8431 Trusted TMR 24 VDC Analogue Input Module, also cataloged as the T8431 analogue input module, operates as a dedicated hardware component for analogue signal acquisition within Trusted triple modular redundancy (TMR) safety instrumented systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | T8431 |
| Brand | ICS Triplex |
| Origin | UK |
| Weight | 1.149 kg (2.5 lbs) |
| Dimensions | 266 mm × 31 mm × 303 mm |
| Operating Temp | -5 deg C to 60 deg C |
| Power Consumption | 15–18 W |
| Number of Inputs | 40 channels |
| Input Current Range | 0–22 mA |
| Input Voltage Range | 0–6 VDC |
| Resolution | 3.9 µA (1/256 mA) |
| Safety Accuracy | ±1% of full scale |
| Calibration Accuracy | 0.03% |
| Calibration Interval | 2 years |
| Circuit Type | Fault tolerant, fully triplicated with optional line monitoring |
| Intrinsic Safety | External barrier |
| SOE Event Resolution | 1 ms |
| SOE Time-Stamp Accuracy | ±0.5 ms |
| Isolation | ±250 VDC sustained, ±2.5 kVDC maximum |
| Channel Crosstalk | -40 to -60 dB |
| Self-Test Interval | 2 minutes |
| RTC Resolution | 100 µs |
SIL3 Certification and TMR Architecture
The module is designed for SIL3-certified safety instrumented systems. Its triple modular redundancy (TMR) 2oo3 architecture ensures fail-safe state execution under fault conditions. Galvanic isolation between channels and field common provides robust protection against electrical disturbances, while optional line monitoring enhances diagnostic coverage.
Frequently Asked Questions
Q: Does the module support hot-swap replacement? A: No. Power must be isolated before removal or insertion to maintain system integrity.
Q: What is the redundancy switching delay? A: Switching between redundant slices occurs within the system cycle, typically less than the 0.5 ms update time.
Q: How often should calibration be performed? A: A 2-year interval is recommended for input channel calibration checks.
Field Installation Guidelines
- Ensure external fusing is provided where required, as the module itself has no internal fusing.
- Maintain shielded cabling with proper grounding to minimize channel-to-channel crosstalk.
- Observe environmental specifications (Document 552517) for humidity and temperature limits.
- Verify external intrinsic safety barriers are installed when operating in hazardous zones.
- Allow adequate airflow around the module to dissipate 15–18 W of power consumption.
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Vendor: Bently Nevada
21000-16-05-00-080-04-02 | Bently Nevada | Proximity Probe Housing Assemblies
Sale price $1,500.00Regular price $1,550.00 -
Vendor: Allen-Bradley
Allen Bradley 1762-L40BXBR MicroLogix 1200 40 Point Controller
Sale price $300.00Regular price $320.00 -
Vendor: Bently Nevada
330192-00-68-05-05 | Bently Nevada | Eddy Current Proximity Probe
Sale price $850.00Regular price $890.00 -
Vendor: GE
GE DS200TCQAG1BGE Analog Input I/O Board
Sale price $290.00Regular price $330.00
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- TEL: +86 180 3027 3592