When to Use RTDs
Resistance temperature detectors, or RTDs, are a type of thermocouple that senses and reads the temperature of a substance, usually liquid, inside a container. The RTD sensor can measure the entire temperature of a substance at once, rather than simply measure the temperature of the area near to the sensor itself. The ability of the unit to measure the temperature of a unit as a whole makes it uniquely important in the roll of industrial temperature measurement. RTD sensors are ideal for using in a variety of industries, and are often used to monitor the temperature of liquid refrigeration, food processing storage, air and liquid temperature measurement, micro electronics, stoves and grills, and plastics manufacturing. Since resistance temperature detectors are one of the many forms of temperature sensors available, it can be questionable to some factories whether they should use a RTD or another type of temperature detector. In most cases, an RTD is ideal for temperature monitoring and measuring in the following conditions:
When a customer requires a good at a specific temperature and the product must be kept at a stable temperature reading for extended periods.
When absolute temperature accuracy is a necessity.
When a factory must measure the temperature of an entire area rather than a single point of a liquid or other element at one time.
When a factory has to uphold the highest temperature standards and quality control available in the industrial market today.
If any of the above criteria are necessary, or certainly if more than one requirement is necessary, then an RTD is the ideal temperature monitoring and reporting device. You can get an industrial RTD that is designed to measure temperature with different fittings through a thermowell, or you can purchase a general use RTD that can be used as an attachment with an industrial sensor or that can be used directly to measure the temperature of a substance through direct insertion.