Sensor Probe | M8 Thread with 2M Cable | Industrial RTD Thermocouple

This stainless steel RTD PT100 temperature sensor gives accurate readings for industrial equipment. The PT100 sensor is a platinum resistance thermometer. It has 100 ohms of resistance at 0°C. This is a standard for consistent measurement. This probe monitors liquids, gases, and solids over a wide temperature range. Features and Benefits - Class A PT100 element - It gives precise measurements. The tolerance is ±(0.15 + 0.002|t|)°C. This is good for process control. - 3-wire configuration - This offers a good balance of accuracy and cost. It compensates for lead wire resistance. Simpler 2-wire sensors do not. - Waterproof stainless steel sheath - It protects the probe from moisture and corrosion. This makes it suitable for direct immersion in liquids. - M8 thread and 2-meter cable - The M8 thread PT100 sensor mounts securely. The long cable gives flexibility for connecting to your PID controller or data logger. Applications - Monitoring and controlling temperatures in industrial ovens, kilns, and furnaces. - Measuring liquid temperatures in vats, tanks, and chemical processing equipment. - Integrating with a PID controller to automate temperature regulation systems. Safety & Preparation Before working with any industrial temperature measurement equipment, ensure the power supply to the system is disconnected. This Sensor Probe is an industrial RTD thermocouple, designed for precision temperature sensing. Always wear appropriate personal protective equipment. Handle the 2m probe carefully to avoid damage to the stainless steel M8 thread or the sensor itself. Ensure you have the necessary tools for connection, as no battery is included with this product. Identify standard RTD Values An RTD sensor, or Resistance Temperature Detector, operates on the principle that its electrical resistance changes predictably with temperature. This Sensor Probe is a PT100 Sensor, meaning it has a resistance of 100 ohms at 0°C. Other common RTD types include PT1000 (1000 ohms at 0°C). Knowing the specific type, in this case a PT100, is crucial for accurate readings when connecting to a controller or other measurement device. How to Test by Wire Configuration To check an RTD sensor, you will measure its resistance. This Sensor Probe is an RTD thermocouple, and its internal wiring will determine the testing method. The goal is to isolate the resistance of the sensing element itself, minimising the impact of lead wire resistance. Use a multimeter with a resolution of at least 0.1 ohms for accurate readings. A. 2-Wire RTD With a 2-wire RTD, two wires connect the PT100 sensor element to the controller. To test, simply measure the resistance across these two wires. However, this method includes the resistance of the lead wires, which can introduce errors, especially with a 2m probe length. This configuration is generally less accurate for industrial temperature measurement where precision is critical. B. 3-Wire RTD (Most Common) A 3-wire RTD uses three wires to connect the PT100 sensor to the controller. Two wires are used for measuring the resistance, and the third wire compensates for the resistance of the lead wires. To test, measure the resistance between the two sensing wires. Then, measure the resistance between one sensing wire and the compensation wire. The compensation wire should have a very similar resistance to the lead wire it is paired with, allowing the controller to subtract lead resistance.