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The Allen Bradley 1734-IK is a 2-channel thermocouple and millivolt analog input module designed for temperature and low-level signal measurement in distributed automation systems. It belongs to a modular I/O platform that allows field-level signal acquisition close to sensors, improving accuracy and reducing wiring complexity.
This module is specifically designed to accept inputs from thermocouples (such as Type J, K, T, E, R, S, N) and millivolt signals, making it suitable for precise temperature monitoring and process control. It includes built-in cold junction compensation (CJC) to ensure accurate thermocouple readings.
The module connects to a POINT I/O system through a backplane and communicates with a controller via a network adapter. Its compact size and high measurement accuracy make it ideal for temperature-sensitive industrial applications.
The POINT I/O series provides flexible distributed I/O solutions, enabling scalable system design for various industrial environments.
| Parameter | Specification |
|---|---|
| Model | 1734-IK |
| Module Type | Analog Input (Thermocouple / mV) |
| Number of Channels | 2 |
| Input Types | Thermocouple (J, K, T, E, R, S, N), mV |
| Input Range (mV) | ±50 mV / ±100 mV (typical) |
| Temperature Range | Depends on thermocouple type |
| Resolution | 16-bit |
| Accuracy | ±0.3% of full scale (typical) |
| Cold Junction Compensation | Integrated |
| Conversion Time | Approx. 100 ms per channel |
| Input Impedance | High impedance |
| Backplane Current | Approx. 75 mA @ 5V DC |
| Power Dissipation | Approx. 1.2 W |
| Isolation | Channel-to-backplane isolation |
| Diagnostics | Sensor open-circuit detection |
| Indicators | Module status LED |
| Wiring Category | Low-level analog signals |
| Operating Temperature | -20°C to +55°C |
| Storage Temperature | -40°C to +85°C |
| Mounting | DIN Rail (via terminal base) |
| Enclosure | Open-style |
| Dimensions | Approx. 56 × 12 × 75.5 mm |
| Weight (kg) | Approx. 0.05 kg |
The 1734-IK supports two independent thermocouple or millivolt input channels, allowing accurate measurement of temperature and low-level signals.
It includes built-in cold junction compensation, ensuring reliable thermocouple readings without the need for external compensation devices.
The module supports multiple thermocouple types, making it highly versatile for different industrial applications.
It offers high-resolution analog-to-digital conversion, enabling precise monitoring of process variables.
Its compact design allows installation in distributed I/O systems where space is limited.
The 1734-IK is widely used in applications requiring temperature measurement and monitoring:
It is especially suitable for environments where accurate temperature control is critical to process quality and safety.
Accurate Temperature Measurement
Supports multiple thermocouple types with built-in compensation for precise readings.
Flexible Input Options
Handles both thermocouple and millivolt signals in a single module.
Compact Design
Ideal for distributed systems with limited installation space.
Reliable Diagnostics
Detects sensor faults such as open circuits.
High Compatibility
Works with a wide range of industrial temperature sensors.
Easy Integration
Seamlessly integrates into POINT I/O systems.
| Model | Type | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1734-IK | Analog Input | 2 | Thermocouple/mV | 56×12×75.5 | 0.05 |
| 1734-IR2 | Analog Input | 2 | RTD | 56×12×75.5 | 0.05 |
| 1734-IE2C | Analog Input | 2 | Current | 56×12×75.5 | 0.05 |
| 1734-IE2V | Analog Input | 2 | Voltage | 56×12×75.5 | 0.05 |
| 1734-OE2C | Analog Output | 2 | Current | 56×12×75.5 | 0.05 |
| 1734-AENT | Ethernet Adapter | N/A | — | 133×56×79.8 | 0.30 |
| Model | Type | Key Function | Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1769-L33ER | PLC Controller | Compact controller | 24V DC | 118×87×87 | 0.50 |
| 1756-L81E | PLC Controller | High-performance controller | 24V DC | 175×90×140 | 0.65 |
| 1756-EN2T | Communication | Ethernet module | 24V DC | 145×35×140 | 0.30 |
| 1734-AENTR | Adapter | Ethernet I/O adapter | 24V DC | 56×12×75.5 | 0.04 |
| 5069-IF8 | Analog Input | 8-channel analog input | 24V DC | 138×42×95 | 0.30 |