Sensor | Waterproof Anti-Corrosion Probe | 3-Wire PFTE RTD Cable

This PT100 temperature sensor gives accurate readings for industrial control systems. It uses a platinum RTD sensor core, which changes resistance predictably with temperature. A stainless steel sheath protects the probe. A waterproof, anti-corrosion PFTE cable lets you use it in demanding environments. Features and Benefits - Platinum RTD element - Gives stable, repeatable measurements for process control. - Three-wire (3 wire) setup - Makes up for lead wire resistance. This gives you a more accurate reading than two-wire setups. - Waterproof PFTE cable - Stands up to chemicals, oils, and moisture. This protects the wiring in harsh industrial settings. - Stainless steel sheath with NPT fitting - Protects the PT100 probe from bumps. It also lets you mount it securely. Applications - Checking temperatures in chemical vats and processing lines where corrosion resistance matters. - Measuring fluid and gas temperatures in HVAC and industrial automation systems. - Attaching to pipes or tanks as a surface mounted PT100 temperature sensor for external checking. Safety & Preparation Before handling any RTD sensor, ensure the power to the circuit or controller is completely disconnected. This prevents electrical shock and potential damage to the precision sensor or your testing equipment. Wear appropriate personal protective equipment. When working with a Waterproof Anti-Corrosion Probe like this one, remember its robust design is for challenging environments, but careful handling during installation and testing is still crucial. Avoid kinking or sharply bending the PFTE cable, as this can compromise its integrity. Identify standard RTD Values An RTD (Resistance Temperature Detector) sensor, such as this PT100 Temperature Sensor, measures temperature by correlating resistance to temperature. The "100" in PT100 indicates that at 0°C, the sensor will have a resistance of 100 ohms. Understanding this baseline is fundamental for checking an RTD sensor's function. While this product is a PT100, other standard RTD values exist, like PT500 or PT1000, which would have resistances of 500 ohms and 1000 ohms respectively at 0°C. Always verify the specific RTD type you are testing. How to Test by Wire Configuration Testing an RTD sensor, including how to check an RTD sensor like this one, involves measuring its resistance. The method varies slightly depending on the wiring configuration. This particular sensor has a Three-wire configuration. Regardless of the number of wires, a multimeter capable of measuring resistance (ohms) is essential. Ensure your multimeter is calibrated and set to the appropriate resistance range. Always consult the sensor's specific datasheet for expected resistance values at various temperatures, as ambient temperature will affect your readings. A. 2-Wire RTD A 2-wire RTD sensor is the simplest configuration. It has two wires connecting the sensing element to the measuring device or controller. To test, connect your multimeter leads to each of the two wires. The measured resistance will include both the resistance of the platinum RTD element and the resistance of the lead wires. For high precision applications, this lead wire resistance can introduce errors, as it is added to the actual temperature measurement. This configuration is generally suitable for applications where long lead lengths are not required or where high accuracy is not paramount. B. 3-Wire RTD (Most Common) This product features a Three-wire configuration, which is the most common for RTD temperature sensors. It uses three wires to compensate for lead wire resistance, improving accuracy. Typically, two wires are connected to one end of the platinum RTD element, and the third wire to the other end. To test, identify the two wires that go to one side of the element (often the same colour) and the single wire that goes to the other. Measure resistance between the two 'same' wires – this should be close to zero. Then, measure between one of the 'same' wires and the 'other' wire; this reading is the sensor's resistance, with lead resistance cancelled out for a more precise measurement.