PT100 Sensor | 2m Braided Cable | Metric & NPT Threads

This PT100 RTD temperature sensor measures temperatures for industrial equipment. It gives you accurate, steady readings. The waterproof stainless steel probe head and flexible metal braided cable handle tough conditions. This threaded PT100 sensor connects securely for steady monitoring between -50°C and 280°C. Features and Benefits - Stainless Steel Probe Head - The 30mm probe is made from steel that resists corrosion. This means it lasts a long time and reacts quickly to temperature changes. - 2m Metal Braided Cable - This shielding protects the wires inside from wear and tear and electrical interference. This helps keep the signal clear. - 3-Wire PT100 Setup - The 3-wire design makes up for wire resistance. This gives you a very accurate RTD sensor reading, which is a main plus for RTD sensors. - Many Thread Options - You can get it with common thread sizes like 1/8 inch NPT and M8. This lets you put it right into your machines or pipes. Applications - HVAC Systems - Check air and fluid temperatures in ducts, chillers, and boilers. This helps them run well. - Industrial Machinery - Keep an eye on operating temperatures in engines, injection molds, and hydraulic systems. This stops them from getting too hot. - Process Control - Use it in tanks, pipes, and vessels for exact temperature control. This is good for food production, chemical processing, or lab work. Safety & Preparation Before working with any PT100 sensor or associated equipment, always ensure the power supply to the system is disconnected. This prevents accidental short circuits or electrical shock. When installing or testing, handle the 2m braided cable carefully to avoid damage. The various thread sizes available, including 1/8 inch, 1/4 inch, 3/8 inch, 1/2 inch, 3/4 inch, M6, M8, M10, and M12, mean a suitable thread sealant or tape may be required for a secure and leak-free fit, depending on the application. Ensure the probe head diameter of 30 mm is compatible with the intended installation point. Identify standard RTD Values An RTD (Resistance Temperature Detector) is a precision sensor used to measure temperature by correlating resistance with temperature. A PT100 sensor, specifically, has a resistance of 100 ohms at 0 degrees Celsius. This known baseline resistance is crucial for accurate temperature measurement. When checking an RTD sensor, you are essentially verifying its resistance at a known temperature against the expected value. Deviations can indicate a faulty sensor or an issue with the wiring. This sensor type is often connected to a controller that interprets these resistance changes into temperature readings. How to Test by Wire Configuration Testing a PT100 sensor involves measuring its resistance. The method varies slightly depending on the number of wires it uses. This PT100 sensor has a 2m braided cable, and the specific wiring configuration will determine how you conduct your resistance measurement. The goal is to determine if the sensor is providing the correct resistance for a given temperature, typically at room temperature. A multimeter set to resistance (ohms) is the standard tool for this task. A. 2-Wire RTD With a 2-wire RTD, you simply connect the two leads of your multimeter to the two wires of the sensor. The resistance reading will include the resistance of the sensor element itself plus the resistance of the 2m braided cable. While this method is straightforward, the cable resistance can introduce a slight error into the temperature measurement. For more precise applications, a 3-wire or 4-wire RTD system is generally preferred, as they compensate for lead wire resistance. B. 3-Wire RTD (Most Common) A 3-wire RTD configuration is designed to compensate for the resistance of the lead wires, offering greater accuracy. In this setup, two wires are typically connected to one side of the RTD element, and the third wire to the other side. To test, measure the resistance between the two wires connected to the same side of the element; this should ideally be close to zero. Then, measure the resistance between one of those wires and the third wire. This reading should represent the sensor's resistance, minus the lead wire resistance, providing a more accurate value for the controller.