Batteries for pressure monitors.* resistant to high temperatures
* high energy density
The U.S. National Highway Traffic Safety Administration The National Highway Traffic Safety Administration (NHTSA, often pronounced "nit-suh") is an agency of the Executive Branch of the U.S. Government, part of the Department of Transportation. (NHISA) is calling for all vehicles to be equipped with onboard Refers to a chip or other hardware component that is directly attached to the printed circuit board (motherboard). Contrast with offboard. See inboard. systems that automatically warn car and light truck drivers when a tire is significantly underinflated. (See also the January issue of Designfax at http:// www.manufacturingcenter.com/dfx/archives/0103/0103feature.asp) The rules, which affect new vehicles produced by year's end 2003 and culminating in 2006, call for a Tire Pressure Monitoring System A tire pressure monitoring system (TPMS) is an electronic system to monitor the air pressure inside a pneumatic tire. They are sometimes referred to as remote tire pressure monitoring systems (RTPMS) or simply as Run flat indicators. (TPMS (Transaction Processing Monitor System) A TP monitor from Fujitsu Services, formerly ICL, that is used in conjunction with its IDMSX database system. TPMS supports up to 16,000 online users. See IDMSX. ) that operates with pressure monitoring tags on each tire, one cell per tag. Each tag is designed to send a warning signal when a tire's pressure drops below its specified safety level, which could cause tire failure, tire separation or blow-outs, as well as shorten tire life and reduce fuel economy.
To meet these Federal rules, Maxell has introduced two new high-temperature resistant Lithium Manganese Dioxide manganese dioxide
A black crystalline compound, MnO2, used as a depolarizer of dry-cell batteries and in textile dyeing. (Li/Mn[O.sub.2]) coin cells that power pressure-sensing tags, which mount on the rims of each vehicle's wheels. The new cells, types CR2450-HR and CR2450HR-EX, include a change in gasket material, a completely new crimping structure and improved content to operate in the high-temperature environment encountered on rotating auto and light truck wheels.
Li/Mn[O.sub.2] batteries offer a nominal voltage of 3V, and one lithium battery Lithium batteries are primary batteries that have lithium metal or lithium compounds as an anode. Depending on the design and chemical compounds used lithium cells can produce voltages from 1.5V to about 3V, twice the voltage of an ordinary zinc-carbon battery or alkaline cell. , with a minimum life span of five years, can replace two cells of another chemistry. Maxell's coin-type lithium batteries also have a very high energy density, suiting for use in compact equipment that requires powerful small-sized batteries. Lithium batteries undergo little change in their internal resistance over time, and therefore deliver stable discharge voltage. The company's sealing techniques create tough lithium batteries that operate safely over extended periods.
Of the two versions, the CR2450-HR is designed for standard vehicles, and the CR2450HR-EX is for high-performance, premium vehicles. The CR2450HR cell operates in the temperature range of -40[degrees] to 120[degrees]C, has a standard capacity of 550 mAh, and weighs 6.8g. The CR2450HR-EX cell operates between -40[degrees] to 150[degrees]C, has a capacity of 525 mAh and weighs 6.7g. Both cells measure 24.5 mm in diameter by 5 mm high.
Circle 226--Maxell, Fair Lawn Fair Lawn, borough (1990 pop. 30,548), Bergen co., NE N.J., across the Passaic River from Paterson; inc. 1924. It is residential with light industries. , NJ. www.rsleads.com/310df-226