Polymer thick-film technology: A possibility to obtain very low cost pressure sensors?

✍ Scribed by Ga´bor Harsa´nyi

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 330 KB
• Volume: 27
• Category: Article
• ISSN: 0924-4247
• DOI: 10.1016/0924-4247(91)87098-n

✦ Synopsis

A new type of pressure sensor has been developed by taking advantage of the piezoresistive effect in polymer thick-film resistors screened and cured on epoxi-glass diaphragms. The device looks promising to satisfy the requirements for low cost, high sensitivity and low thermal drift.The piezoresistive effect in polymer thick-film (PTF) resistors is discussed in comparison with cermet thick films. The possibility of making a highperformance PTF pressure sensor is theoretical supported. Characteristics of the newly developed polymer thick-film sensor are described. In a limited temperature range, the new sensor has parameters that are not worse than those of the cermet thick-film pressure sensor and a much lower cost.