Introduction
The Allen Bradley 1769-IT6 is a 6-channel thermocouple/millivolt input module designed for precise temperature measurement in CompactLogix and MicroLogix 1500 systems. It supports a wide range sur thermocouple types—J, K, T, E, N, R, S, and B—as well as direct millivolt inputs, making it a versatile solution for process monitoring and temperature control.
This module delivers high accuracy, 16-bit resolution, and channel-to-channel isolation, ensuring stable and reliable readings even in noisy industrial environments. Its compact form factor and modular design make it ideal for space-constrained control panels and distributed systems where precision thermal measurement is required.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Module Type | Compact I/O Thermocouple/Millivolt Input Module | Measures temperature via thermocouple or mV input |
| Number sur Channels | 6 single-ended | Individually configurable input channels |
| Supported Thermocouple Types | J, K, T, E, N, R, S, B | Wide compatibility with industrial standards |
| Millivolt Input Range | -75 mV to +75 mV | Direct voltage measurement capability |
| Input Resolution | 16 bits | High-precision signal conversion |
| Accuracy (Typical) | ±0.5°C for Type J thermocouple | Ensures dependable readings |
| Open Circuit Detection | Yes | Automatically detects sensor disconnections |
| Cold Junction Compensation | Internal, automatic | Improves measurement stability |
| Conversion Rate | 220 ms per channel | Suitable for slow to moderate temperature changes |
| Backplane Current (5V) | 90 mA | Drawn from Compact I/O chassis |
| Backplane Current (24V) | 65 mA | For analog circuitry |
| Isolation Voltage | 750V DC (channel-to-system) | Protects system electronics |
| Power Dissipation | 1.8 W typical | Low heat generation |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) | Industrial operational range |
| Storage Temperature | -40°C to +85°C (-40°F to 185°F) | Safe non-operational limits |
| Relative Humidity | 5%–95% non-condensing | Withstands harsh environmental conditions |
| Vibration Resistance | 10–500 Hz, 1 g | IEC 60068-2-6 compliance |
| Shock Resistance | 30 g operational | Industrial mechanical durability |
| Dimensions (H × W × D) | 118 mm × 35 mm × 87 mm (4.6″ × 1.4″ × 3.4″) | Compact and modular design |
| Poids | 0.28 kg (0.62 lbs) | Lightweight for easy installation |
Applications
The 1769-IT6 module is widely used in systems requiring precise and reliable temperature data acquisition:
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Industrial Furnaces & Kilns: Monitors and regulates process temperature.
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Food & Beverage Processing: Maintains temperature consistency in production lines.
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Pharmaceutical Manufacturing: Controls batch and sterilization temperatures.
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HVAC Systems: Measures environmental and process air temperatures.
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Energy & Power Plants: Monitors turbine, boiler, and equipment heat levels.
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Laboratory & R&D Equipment: Provides accurate thermocouple-based data logging.
Advantages
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Multi-Thermocouple Support: Compatible with J, K, T, E, N, R, S, and B types.
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High Accuracy & Resolution: 16-bit resolution for precise thermal control.
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Channel-to-Channel Isolation: Prevents signal interference and improves reliability.
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Built-in Cold Junction Compensation: Eliminates the need for external sensors.
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Open-Circuit Detection: Simplifies maintenance and troubleshooting.
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Compact Size: Enregistrers control panel space while providing high channel density.
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Seamless Integration: Works directly with CompactLogix and MicroLogix controllers.
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Reliable Performance: Designed for stable operation in industrial environments.
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Modular Scalability: Easily added to existing Compact I/O systems.
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Efficient Power Usage: Low power draw for energy-efficient systems.
Informations sur l'entreprise
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