The PTA9B01 PT100 RS485 Temperature Sensor Module is designed for accurate temperature monitoring using PT100 platinum RTD sensors. It supports both 2-wire and 3-wire PT100 sensors and communicates using the industrial RS485 Modbus RTU protocol.
With a wide measurement range of -20°C to +400°C, this module is suitable for industrial automation, temperature monitoring, heating systems, control panels, and other applications requiring reliable remote temperature measurement.
Specifications
-
Model: PTA9B01
-
Sensor Type: PT100 Platinum RTD
-
Communication Interface: RS485
-
Protocol: Modbus RTU
-
Supply Voltage: DC 8–25V (12V recommended)
-
Working Current: 8–13mA
-
Default Baud Rate: 9600 bps
-
Serial Configuration: 8 data bits, no parity, 1 stop bit (8N1)
-
Read Command: Modbus Function 03
-
Write Command: Modbus Function 06
-
Compatible Sensors: PT100 2-wire or 3-wire
-
Temperature Measurement Range: -20°C to +400°C
-
Measurement Data: Temperature and PT100 resistance values
-
Maximum Addressable Modules: Up to 247
-
Multi-Device Support: RS485 addresses can be modified to connect multiple modules
-
Recommended: Use an RS485 repeater when connecting more than 16 modules
Key Features
-
Wide -20°C to +400°C temperature measurement range
- Supports PT100 platinum resistance temperature sensors
-
Compatible with both 2-wire and 3-wire PT100 probes
-
Industrial RS485 communication
-
Standard Modbus RTU protocol
- Temperature and PT100 resistance values can be read
- Configurable RS485 device address
- Multiple modules can operate on the same RS485 network
- Wide DC 8–25V input voltage range
- Suitable for long-distance temperature monitoring
Applications
Ideal for:
- Industrial temperature monitoring
- Automation systems
- PLC systems
- Heating and cooling equipment
- Control panels
- Temperature data acquisition
- HVAC systems
- Laboratory equipment
- Manufacturing equipment
- Remote temperature monitoring
- Arduino and ESP32 projects using an appropriate RS485 interface
