The temperature signal acquisition function of the GT3U series PLC is usually achieved by connecting a temperature sensor (such as an NTC temperature probe). The following are the key points of temperature signal acquisition:
Temperature signal acquisition function
Supported sensors:
GT3U series PLC supports connecting NTC10K and NTC50K type temperature probes.
The measurement range of the NTC10K temperature probe is -40℃ to 150℃.
The measurement range of the NTC50K temperature probe is -40℃ to 210℃.
Input type:
Temperature signals are usually input as analog quantities, and temperature data is collected through the analog input channel of the PLC.
Analog input can collect temperature signals through voltage (0-10V) or current (0-20mA).
Configuration and calibration:
Before using the temperature probe, you need to set the corresponding input channel in the PLC program as the temperature signal input and perform corresponding calibration.
Read temperature data through built-in function instructions, and process and convert the data (for example, from voltage/current signals to actual temperature values).
Application scenarios:
Temperature signal acquisition is widely used in temperature monitoring and regulation in industrial control, such as heating control systems, cooling systems, etc.
Notes
Make sure that the temperature sensor matches the input channel of the PLC, especially the voltage or current specifications.
Calibrate the temperature sensor regularly to ensure the accuracy of the collected data.
With the correct settings, the GT3U series PLC can accurately collect and process temperature signals, which is suitable for various temperature control needs of industrial automation.