Overview
PT100 RTD (Resistance Temeprature Detectors) is a precision temperature sensor used in a wide range of industrial and scientific applications. "PT100" indicates that the sensor has a resistance of 100 ohms at 0°C and is made of platinum (Pt), a highly stable and inert metal ideal for temerature measurement applications.
The basic working principle of the platinum RTD sensor is based on the positive temperature coefficient of platinum. As temperature increases, the resistance of the platinum wire increases in a predictable manner. This resistance change can be measured and converted into a temperature reading using a precision instrument. Thus the platinum element is housed in a probe to protect it from physical damage and contamination, making it suitable for use in a variety of environments.
The primary advantage of a PT100 sensor is its accuracy and stability over time, offers greater precison than most NTC/PTC thermistors, thermocouples and other types of temperature sensors with accuracy levels of ±0.5°C. This PT100 offers a measurement range from -200°C to +550°C.
Specifications
Specifications for Platinum RTD PT100 Sensor
| Model | PT100 |
| Wire Interface | 3 Wire |
| Probe | Stainless Steel Tube |
| Probe Diameter | 4mm |
| Probe Length | 30mm (May differ as per stock) |
| Cable Length | 1m & 2m |
| Temperatyre Range | -200°C to +550°C |
| Accuracy | ±0.5°C (-10°C to +85°C) |
Configurations
PT100 sensors can be connected in different configurations to measure the resistance changes. The most common configurations are two-wire, three-wire, and four-wire connections. The three-wire and four-wire configurations are used to eliminate the effects of wire resistance, which can introduce errors in the temperature measurement, making these configurations more accurate for precise applications.
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