8-Channel PT100 RTD RS485 Temperature Sensor Module for Industrial Monitoring & Data Acquisition

The 8-Channel PT100 RTD RS485 Temperature Sensor Module is a high-precision industrial-grade solution designed for accurate and reliable temperature measurement across multiple points. Engineered for industrial automation, process control, HVAC systems, laboratory research, and data acquisition applications, this module supports up to 8 PT100 RTD sensors simultaneously and communicates efficiently through RS485 Modbus RTU protocol.

With its multi-channel capability, robust communication interface, and superior accuracy, this temperature sensor module is ideal for environments where real-time monitoring, centralized control, and long-distance communication are essential. Whether used in manufacturing plants, chemical processing, energy systems, or smart building automation, it ensures stable performance, easy integration, and high reliability.

Key Features

• 8-Channel Support: Connect and monitor up to eight PT100 RTD sensors simultaneously for multi-point temperature tracking.

• RS485 Communication: Built-in RS485 Modbus RTU protocol allows reliable, long-distance, multi-device communication in industrial networks.

• High Measurement Accuracy: Provides precise readings with ±0.2°C accuracy (depending on sensor quality and calibration).

• Wide Temperature Range: Compatible with PT100 RTD sensors for measurements typically between -200°C and +600°C.

• Industrial-Grade Design: Built with durable components for continuous 24/7 operation in demanding environments.

• Flexible Integration: Compatible with PLC, SCADA, HMI, microcontrollers (Arduino, STM32, Raspberry Pi), and data loggers.

• Isolation Protection: Electrical isolation between communication and sensor circuits for system safety and reliability.

• Compact DIN-Rail Mounting: Easy installation in control panels and industrial cabinets.

• Low Power Consumption: Energy-efficient design ensures stable operation with minimal heat generation.

• Scalable Applications: Multiple modules can be daisy-chained for large-scale systems.

Technical Specifications

• Model: 8-Channel PT100 RTD RS485 Temperature Sensor Module

• Number of Channels: 8 independent inputs

• Supported Sensors: PT100 (2-wire, 3-wire, 4-wire compatible depending on wiring configuration)

• Temperature Range: -200°C to +600°C (sensor-dependent)

• Resolution: 0.1°C

• Accuracy: ±0.2°C typical (after calibration)

• Communication Interface: RS485 (Modbus RTU protocol)

• Baud Rate: Selectable (typically 9600/19200/38400 bps)

• Isolation Voltage: 1500V (communication to input isolation)

• Power Supply: 12V–24V DC

• Power Consumption: ≤ 3W

• Mounting: DIN-rail or panel mount

• Operating Temperature: -20°C to +70°C

• Storage Temperature: -40°C to +85°C

• Dimensions: Compact industrial form factor (varies by manufacturer)

• Weight: Lightweight, easy to install

• Applications: Industrial automation, factory monitoring, HVAC, smart buildings, energy management, process control, laboratory measurement, data logging

Applications

The 8-Channel PT100 RTD RS485 Temperature Sensor Module is versatile and widely used across industries:

• Industrial Automation – Monitor multiple process points in manufacturing, metallurgy, and chemical plants.

• HVAC Systems – Optimize temperature control for air conditioning, refrigeration, and heating systems.

• Laboratory Research – Record accurate temperature data across multiple experiments simultaneously.

• Smart Buildings – Integrated into IoT-based building management systems for energy-efficient climate control.

• Food & Beverage Processing – Ensure precise monitoring for fermentation, storage, and production lines.

• Energy & Power Plants – Track temperatures in boilers, turbines, transformers, and electrical systems.

• Agriculture & Environment – Use for greenhouse monitoring, soil temperature measurement, and weather stations.

• Data Acquisition Systems – Interface with SCADA, PLC, or data loggers for long-term analysis.

The 8-Channel PT100 RTD RS485 Temperature Sensor Module delivers:

• Precision – High-resolution measurement ensures reliable and accurate data.

• Scalability – Supports multiple sensors and modules for large systems.

• Compatibility – Works with a wide range of industrial and DIY controllers.

• Durability – Designed for harsh industrial environments.

• Efficiency – Save time and reduce wiring complexity with multi-channel support.

Unlike single-channel solutions, this module provides centralized temperature monitoring for up to 8 points, reducing cost and improving system efficiency. Its RS485 Modbus RTU support allows seamless integration into existing industrial networks, making it a future-ready choice for smart automation.