Portable PVC Insulated With Metal Sheath Pt100 & RTD Sensor Used For Food And Beverage Industry Temperature Measurement
A PT100 cable measures temperature based on the principle of the positive temperature coefficient of platinum resistance. Here's a detailed explanation:
Measurement Process: An electrical current is passed through the platinum resistance element in the PT100 cable. As the temperature changes, the resistance of the platinum element also changes accordingly. By measuring the change in resistance, the corresponding temperature can be determined. Usually, a Wheatstone bridge circuit or other measurement circuits are used to accurately measure the resistance value of the PT100. The measurement circuit converts the resistance change into a voltage or current signal, which can be read and processed by a temperature - measuring instrument or a data acquisition system. After calibration, the instrument can directly display the measured temperature value.
To install a PT100 cable for accurate temperature measurement, the following steps and considerations are important:
- Select the appropriate cable: Choose a PT100 cable with the right specifications for your application, considering factors such as the temperature range, environmental conditions, and required accuracy. For example, in high - temperature environments, cables with high - temperature - resistant insulation should be selected.
- Prepare the installation site: The installation location should be free from mechanical vibrations, strong electromagnetic fields, and direct sunlight. Ensure that the surface where the sensor is to be installed is clean, flat, and free from dirt, oil, and other contaminants. If measuring the temperature of a liquid, make sure the sensor is installed in a location where it can be fully immersed in the liquid and is not affected by flow disturbances.
- Proper sensor placement: For measuring the temperature of solids, the PT100 sensor should be in good thermal contact with the object. This can be achieved by using thermal paste or adhesive to attach the sensor firmly to the surface. If possible, insert the sensor into a drilled hole in the object to ensure better heat transfer. When measuring air temperature, the sensor should be placed in a well - ventilated area to ensure accurate measurement of the ambient air temperature.
- Cable routing: Route the cable away from sources of interference, such as power cables and electrical equipment that may generate electromagnetic fields. Use cable trays, conduits, or armored cables to protect the PT100 cable from physical damage. Avoid sharp bends and twists in the cable, as these can affect the accuracy of the measurement by changing the resistance of the cable.
- Connection and termination: Make sure the connections at both ends of the PT100 cable are secure and free from corrosion. Use appropriate terminal blocks or connectors to connect the cable to the measuring instrument. Follow the manufacturer's instructions for proper termination to ensure accurate measurement. In some cases, a three - wire or four - wire connection method may be used to compensate for the resistance of the cable itself and improve measurement accuracy.
- Calibration: Before installation and periodically after installation, calibrate the PT100 cable and sensor system to ensure accurate temperature measurement. Calibration can be performed using a calibrated temperature source and a precision measuring instrument. Compare the measured values with the known reference temperatures and adjust the system if necessary.
- Sealing and protection: If the installation environment is humid or dusty, use appropriate sealing materials to protect the PT100 sensor and cable connections from moisture and dust ingress. This helps to prevent corrosion and ensure the long - term stability and accuracy of the measurement.
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FAQ:
Q: What is the brand name of this Thermocouple Cable?
A: The brand name of this Thermocouple Cable is Tankii.
Q: What are the different model numbers available for this Thermocouple Cable?
A: The different model numbers available for this Thermocouple Cable are KX/KC, JX, EX, TX, NX, SC, RTD .
Q: Where is this Thermocouple Cable manufactured?
A: This Thermocouple Cable is manufactured in China.
Q: What are the temperature ranges supported by this Thermocouple Cable?
A: The temperature ranges supported by this Thermocouple Cable vary depending on the model number. Please refer to the product specifications for more information.
Q: Is this Thermocouple Cable suitable for use in harsh industrial environments?
A: Yes, this Thermocouple Cable is designed to be durable and reliable in harsh industrial environments.
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