PT100 Temperature Transmitter: RS485 Modbus-RTU Isolated Acquisition Module

Product Overview

Industrial-grade isolated PT100 temperature acquisition transmitter module with RS485 Modbus-RTU communication. Designed for high-accuracy multi-channel temperature monitoring, supporting 2-wire and 3-wire PT100 platinum resistor inputs with integrated system protection.

Product Specifications

• Product Name: PT100 Temperature Transmitter
  
• Channel Options: 1-Channel
  
• Power Supply:  7∼ 30 VDC (Power consumption: 0.4W; Dual power port option)
  
• Sensor Compatibility: PT100 Platinum Resistors (Supports both 2-wire and 3-wire connections)
  
• Measurement Accuracy: ±0.3 °C
  
• Resolution: 0.1 °C (15-bit AD sampling)
  
• Sampling Rate: 100 kHz per channel
  
• Data Update Rate: 10 Hz per channel
  
• Communication Interface: RS485 with communication isolation (Transmission distance up to 1200 meters)
  
• Protocol: Standard MODBUS-RTU
  
• Baud Rates Supported: Default 9600 N 8 1 (Configurable: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200; supports None / Odd / Even parity)
  
• Operating Environment: Temperature -40°C to 80°C , Humidity 0%–90% RH (non-condensing)
  
• Built-in Protection: Overcurrent, overvoltage, reverse polarity protection, surge/lightning protection, and dual software/hardware watchdog
  
• Diagnostic Features: Sensor disconnection detection and open-circuit circuit detection