Temperature sensors are one of the most common technologies used in many products today, such as automobiles, white electricity and industrial products. In order to carry out reliable temperature measurement, it is very important to select the appropriate temperature sensor for application. Understanding the advantages and disadvantages of different types of temperature sensors helps to make the right choice before measurement.
Thermocouples, thermistors (NTC/PTC), resistance temperature detectors (RTD) and on-chip temperature sensors are the most common types of measurement, and their characteristic differences are detailed below.
| Thermocouple | Thermistor | RTD | On-chip temperature sensors | |
| Typical temperature range
(approx) |
-270 to 1800°C | 0 to 100°C | -250 to 900°C | -55 to 150°C |
| Linear | range | worst | good | best |
| Accuracy | Good | Relying on the calibration | Best | Good |
| Advantage | Self-powered, strong and durable | Fast response to temperature change, high sensitivity | The most accurate and stable | Linear performs well and can support digital interfaces |
| Disadvantage | Nonlinear, requires reference values, least stable, least sensitive | Nonlinear, limited temperature range, current source required | Need current supply | |
| Typical application | Extreme temperature sensing, such as ovens, test equipment | Low precision, medium temperature range, such as hair dryer, protection circuit | High accuracy, extended temperature range, such as gas and fluid flow | Computers, wearables, data logging |
Zhejiang NeoDen Technology Co., Ltd. has been manufacturing and exporting various small pick and place machines since 2010. Taking advantage of our own rich experienced R&D, well trained production, NeoDen wins great reputation from the world wide customers.
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Add: No.18, Tianzihu Avenue, Tianzihu Town, Anji County, Huzhou City, Zhejiang Province, China
Phone: 86-571-26266266
Post time: Oct-26-2021