Waterproof Needle Tip Temperature Sensor Probe | PT100 & PT1000 RTD

This PT100 sensor has a sharp needle tip for accurate temperature measurement. It's an insertion probe, designed to pierce solids like meat, fruit, or soil. The stainless steel probe and flexible silicone cable make it suitable for food processing or lab work. Features and Benefits - PT100 or PT1000 platinum RTD element - This provides much higher accuracy and stability than standard thermistors. - Pointed stainless steel tip - It lets you get internal temperature readings by easily penetrating semi-solid materials. - Fully waterproof probe assembly - This allows for complete immersion in liquids and easy cleaning after use. - Wide operating range of -50°C to 200°C - It covers everything from frozen goods to cooking temperatures. Applications - Food production and safety for checking the internal temperature of meat. - Agriculture and gardening to monitor soil or compost pile temperatures. - Industrial and lab settings for measuring the temperature of various liquids. Safety & Preparation Before working with any electrical components, always ensure the power supply to the RTD sensor and any connected equipment is disconnected. This is crucial for preventing electrical shock and damage to the precision sensor. When handling the Sensor Probe, take care with the needle tip, as it is designed for precise insertion into materials like meat and soil. A multimeter is essential for testing RTD sensors. Familiarise yourself with its functions for resistance measurement. This preparation ensures safe and accurate testing of your RTD. Identify standard RTD Values An RTD sensor, or Resistance Temperature Detector, measures temperature by correlating resistance with temperature. This Sensor Probe, available as PT100 or PT1000 RTD types, has a specific resistance value at 0 °C (100 Ohms for PT100, 1000 Ohms for PT1000). As the temperature increases, the resistance of the probe material, stainless steel, also increases. To check an RTD sensor, you will be measuring this resistance. The accuracy of this probe is Class A or B (IEC 751), indicating its precision across its -50 to 200 °C temperature range. How to Test by Wire Configuration Testing your Sensor Probe involves measuring its resistance using a multimeter. The method varies depending on the wiring configuration: 2-wire, 3-wire, or 4-wire. Understanding these configurations is key to accurately checking your RTD sensor and ensuring it is functioning correctly within its specified temperature range. This process helps verify the integrity of the probe and its silicone cable, ensuring reliable temperature readings for your applications, whether monitoring meat or soil temperature. A. 2-Wire RTD For a 2-wire RTD Sensor Probe, simply connect the multimeter leads to the two wires. Measure the resistance directly. The reading should correspond to the expected resistance for the ambient temperature, considering it is a PT100 or PT1000 type. However, be aware that with a 2-wire configuration, the resistance of the silicone cable itself will be included in your measurement, which can introduce a slight error. This configuration is suitable for applications where extreme precision is not the primary concern, or where cable runs are very short. B. 3-Wire RTD (Most Common) The 3-wire RTD Sensor Probe is the most common configuration because it offers better accuracy by compensating for cable resistance. To test, connect the multimeter to measure the resistance between the two sensing wires. Then, measure the resistance between each sensing wire and the compensation wire. The resistance between the two sensing wires should be the primary measurement. The compensation wire helps the connected controller account for the resistance of the silicone cable, providing a more accurate temperature reading from the stainless steel probe.