Sensor | 1m Metal Braided Cable | 30mm RTD Temperature Probe

This PT100 RTD temperature sensor gives accurate, steady measurements for process control. The FTARP09 is an industrial PT100 sensor. It has a 30mm stainless steel probe head and a 1-meter metal braided cable. Its platinum element makes it a good choice for jobs needing high accuracy. Features and Benefits - PT100 platinum element - This provides very accurate and repeatable temperature readings. RTD sensors are a standard for important processes because of this. - Threaded probe head - It screws right into tanks, pipes, and thermowells. This makes for a secure, sealed fit. It comes in several common NPT thread sizes. - 1-meter metal braided cable - This offers strong protection against physical wear and rubbing. It also helps shield the signal wires. - 3-wire setup - This configuration accounts for the electrical resistance of the cable itself. It leads to a more accurate measurement than 2-wire sensors. Applications - Monitoring liquid temperatures in food and beverage processing tanks. - Regulating temperature in HVAC systems, boilers, and chillers. - Verifying temperatures in laboratory equipment and calibration baths. Safety & Preparation Before working with any electrical sensor, including this 30mm RTD Temperature Probe, always ensure power to the system is disconnected at the mains. This prevents accidental electrocution or damage to the sensor or controller. Always use appropriate personal protective equipment. When handling the 1m metal braided cable, avoid kinks or sharp bends that could compromise the internal wiring. Ensure the chosen thread size (1/8 inch, 1/4 inch, 3/8 inch, 1/2 inch, or 3/4 inch) is compatible with your existing setup for a secure and accurate connection. Identify standard RTD Values An RTD (Resistance Temperature Detector) sensor, such as this PT100 type, measures temperature by correlating resistance with temperature. A PT100 sensor has a nominal resistance of 100 ohms at 0°C. Knowing this baseline value is crucial for checking the sensor's functionality. As the temperature increases, the resistance of the RTD also increases in a predictable way. Always refer to a standard RTD resistance-temperature table for precise values, as this product does not include a battery or internal electronic components for direct readout. How to Test by Wire Configuration To check an RTD sensor like this one, you will need a multimeter capable of measuring resistance (ohms). The method of testing depends on the number of wires the RTD has, which typically refers to its compensation for lead wire resistance. This 30mm RTD Temperature Probe is a PT100 sensor. Understanding the wiring configuration is key to accurately determining if the sensor is functioning correctly and providing a precise temperature reading to a controller. A. 2-Wire RTD In a 2-wire RTD configuration, two wires connect the sensor to the measuring device or controller. To test, simply connect the multimeter leads to each of the two wires. The resistance reading you obtain will include both the resistance of the PT100 element and the resistance of the 1m metal braided cable itself. This configuration is the least accurate for precise applications because it cannot compensate for lead wire resistance, which can vary with cable length and temperature. Compare the reading to a known RTD resistance-temperature chart. B. 3-Wire RTD (Most Common) A 3-wire RTD, often considered the most common type for its balance of accuracy and simplicity, uses an additional wire to compensate for lead resistance. To test, identify the two wires that connect to one side of the PT100 element and the single wire that connects to the other. Measure the resistance between the two wires originating from the same side of the element; this should be close to zero. Then, measure between one of these wires and the third wire; this reading should represent the RTD's resistance, minus the lead wire resistance, providing a more precise sensor reading.