A pressure sensitive device that provides a stable response to measure an applied force at temperatures greater than 150° F. (about 66° C.) is disclosed. The pressure sensitive device can have a conductivity of about 0.01 μS to about 1300 μS and a sensitivity of about 0.01 μS/lb to about 300 μS/lb...http://www.google.com.au/patents/US7785704?utm_source=gb-gplus-sharePatent US7785704 - High temperature pressure sensitive devices and methods thereof
