Get now the 2085-IRT4, a high-performance temperature sensing expansion module designed for Micro850 and Micro870 programmable controllers.
What Is the 2085-IRT4?
The 2085-IRT4 is a specialized 4-channel input module that provides high-accuracy temperature measurements by supporting both Resistance Temperature Detectors (RTD) and Thermocouples (TC). This versatile module is an essential component for industrial processes requiring tight thermal regulation, such as plastic extrusion, food processing, and chemical reactors. By integrating high-resolution analog-to-digital conversion directly into the Micro800 backplane, the 2085-IRT4 eliminates the need for external signal conditioners, reducing both cost and potential signal interference in the control cabinet.
Key Technical Specifications
- Input Channels: 4 Isolated channels
- Supported RTD Types: Pt100, Pt200, Pt500, Pt1000, Ni120, Cu10
- Supported Thermocouples: Type J, K, T, E, R, S, B, N, C, L, TXK/Xk(L)
- Resolution: 16-bit
- Input Range: -200°C to +2315°C (depending on sensor)
- Channel-to-Bus Isolation: 500V AC
Industrial Compatibility and Architecture
Designed to fit seamlessly into the 2085 expansion bus, this module utilizes the Connected Components Workbench (CCW) software for configuration. It features advanced open-circuit detection and out-of-range hardware diagnostics, ensuring that process safety is maintained even in the event of a sensor failure. The module’s internal cold-junction compensation for thermocouples is highly stable, maintaining accuracy across the entire operating temperature range of the PLC rack.
Expert Tips
To ensure the highest accuracy with the 2085-IRT4 when using RTDs, always implement 3-wire or 4-wire cabling to compensate for lead wire resistance. If you are using thermocouples in a high-EMI environment, ensure that the thermocouple extension wire is of the correct alloy type and that all shields are terminated at the module’s ground terminal to prevent thermal offsets caused by electrical noise.
Frequently Asked Questions
Q: Can I mix an RTD on Channel 0 and a Thermocouple on Channel 1?
A: Yes, each of the four channels on the 2085-IRT4 is independently configurable in CCW, allowing for a hybrid sensor setup on a single module.
Q: Does this module support the Pt1000 sensor?
A: Yes, it supports high-resistance Pt1000 sensors, which are excellent for applications requiring long cable runs due to their lower sensitivity to wire resistance.
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