TPS23B

DATASHEET SENSOR SOLUTIONS Thermopile Sensor TPS 23B / 3367 Revision - Date: 2007/11/12 Introduction PerkinElmer introduces the new TPS 23B as part of the TPS 23x family for low-cost remote temperature measurement applications. It consists of a silicon (Si) based thermopile chip in a metal housing with IR transmissive filter. The Si-chip carries a series of thermoelements, forming a sensitive area covered by an IR absorbing material. The thermopile sensing principle allows for broadband IR measurements. With its optimized output signal, the TPS 23x family replaces the TPS 43x series by offering better performance at a lower cost. Properties of TPS 23B The TPS 23B is a miniature sensor in PerkinElmer’s isothermal metal housing in TO-46 size. It is especially suited for ear thermometer solutions. The sensor employs a very small thermopile chip with a 0.5 mm round active area. The chip is optimized for a large output signal. The Si-window is mounted on top of the can and consists of PerkinElmer’s standard IR longpass filter with 5.5 µm cut-on wavelength. A 100 kΩ thermistor inside the TOhousing serves as the ambient temperature reference. Isothermal Housing To provide sensors with extremely stable signals during rapid ambient temperature changes in demanding applications such as medical products, PerkinElmer Optoelectronics developed the Isothermal Housing. This patented technology allows for a fast recovery of the thermal equilibrium in case of heat flow into or out of the s...