PT100 RTD Thermometer Sensor (-50°C ~ 400°C) - (AD12808)

Description:

A Pt100 is a temperature sensor. It consists of a platinum wire that, for example, has 80 ohms at -50°C and whose electrical resistance increases as the temperature rises. The increase in resistance is not linear but is increasing and characteristic of platinum, such that the exact temperature can be found using tables.

A Pt100 is a particular type of RTD (Resistance Temperature Detector). Industrial Pt100s are typically encapsulated in the same way as thermocouples, that is, inside a stainless steel or other material tube (sheath); the sensing element (platinum wire) is at one end, and the electrical wire terminal is at the other, protected inside a round aluminum box (terminal head).

Advantages of the Pt100:

On the other hand, although Pt100s are slightly more expensive and mechanically less rigid than thermocouples, they outperform them, especially in low-temperature applications (-100 to 200°C). Pt100s can easily provide precision within a tenth of a degree, with the advantage that the Pt100 does not degrade gradually while providing erroneous readings; instead, it typically opens, allowing the measuring device to immediately detect the sensor failure and provide a warning. This behavior is a great advantage in uses such as cold storage rooms, where an undetected temperature deviation could cause serious damage. Additionally, the Pt100 can be placed at a distance from the meter without major problems (up to about 30 meters) using conventional copper wire for the extension.

Specifications:

• Type: PT100
• Temperature range: -50 ~ 400 ℃
• Probe size: 0.5 x 10 cm (diameter x length)
• Thread diameter: 8 mm
• Outer material: Plastic, metal, rubber
• Total length: 1 m
• Fork terminal spacing: 0.5 cm

Datasheet