RTDs (Resistance Temperature Detectors)
Resistance Temperature Detectors (RTDs) are precision temperature sensors designed to deliver accurate, repeatable temperature measurement in industrial, commercial, and scientific applications. RSP Supply carries a broad selection of RTDs from trusted manufacturers, including ACI, Dwyer, and Omega. These sensors rely on the predictable relationship between temperature and electrical resistance, most commonly using platinum elements, to provide dependable performance over long service life.
RTDs are available with wire-wound or thin-film sensing elements to suit different application requirements. Wire-wound RTDs offer exceptional stability and accuracy across wide temperature ranges, making them well-suited for process control and calibration-critical environments. Thin-film RTDs provide a compact form factor ideal for space-constrained installations while still maintaining reliable accuracy. ACI, Dwyer, and Omega RTDs are offered in a variety of probe styles, housings, and mounting configurations to support diverse installation needs.
To minimize measurement error caused by lead wire resistance, RTDs are commonly configured using 3-wire or 4-wire connections. When combined with standardized calibration practices, RTDs deliver consistent and repeatable temperature data.
FAQs
Q: What is an RTD and how does it work?
An RTD (Resistance Temperature Detector) is a temperature sensor that measures temperature by detecting changes in electrical resistance as the sensing element’s temperature changes. Most RTDs use platinum elements, such as PT100 or PT1000, due to their stability and repeatability.
Q: What are the advantages of RTDs compared to thermocouples?
RTDs provide higher accuracy, better long-term stability, and superior repeatability than most thermocouples. They are ideal for applications where precise temperature measurement is more important than extreme temperature range.
Q: What industries commonly use RTDs?
RTDs are widely used in manufacturing, HVAC, pharmaceuticals, food and beverage processing, power generation, chemical processing, and laboratory environments.
Q: How accurate are RTDs?
RTDs typically offer accuracy ranging from ±0.05°C to ±0.3°C, depending on sensor class, configuration, and installation method. Using 3-wire or 4-wire configurations helps minimize lead resistance errors.
Q: Do RTDs require calibration and maintenance?
Yes, periodic calibration and inspection are recommended to maintain accuracy and detect potential drift or mechanical damage over time.
Why Buy Resistance Temperature Detectors from RSP Supply
RSP Supply offers a comprehensive selection of RTD temperature sensors designed for accurate and reliable measurement across a wide range of applications. Our inventory includes wire-wound and thin-film platinum RTDs suitable for industrial, scientific, and process control environments. Customers rely on RSP Supply for technical expertise, dependable sourcing, and temperature sensing solutions that support precise and consistent system performance.