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PT100 RTD sensors are temperature sensors that utilize a platinum resistor to measure temperature accurately. The 'PT' in PT100 refers to the use of platinum as the sensing element, while '100' indicates that the resistance of the sensor is 100 ohms at 0 degrees Celsius. These sensors operate on the principle that the resistance of platinum changes with temperature, allowing for precise temperature measurement across a wide range.
| Temperature range | -200 to 850 degrees Celsius |
| Accuracy | Typically ±0.1 to ±0.5 degrees Celsius |
| Resistance tolerance | Class A: ±0.15 ohms, Class B: ±0.3 ohms |
| Response time | Typically 1 to 10 seconds depending on the design |
| Connection type | 2-wire, 3-wire, or 4-wire configurations |
| Material | Platinum sensing element with protective sheath |
| Operating environment | Suitable for industrial and laboratory applications |
When selecting a PT100 RTD sensor, consider the temperature range and accuracy required for your application. Specify the connection type based on your system's compatibility, and choose the appropriate resistance tolerance class for your measurement needs. It's also important to consider the environment in which the sensor will be used, as this can affect material selection. Always request information on calibration certificates and ensure that the quantity needed is clearly stated when requesting a quote.
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The difference lies in the number of wires used for connection, affecting accuracy and compensation for lead resistance.
Yes, they can be designed with protective sheaths to withstand harsh conditions.
With proper handling, PT100 sensors can last for many years, often exceeding 10 years.
Calibration is typically done using a reference thermometer and adjusting the sensor output to match known temperature points.
They are primarily made from platinum, with various protective materials depending on the application.
Yes, but they require appropriate housing to protect against environmental factors.
The '100' indicates that the sensor has a resistance of 100 ohms at 0 degrees Celsius.