MultiSens
the universal temperature sensor
The problem
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In industrial measurement technology, platinum and nickel thinfilm precision resistors are now firmly established and are seen as the real industrial standard. With these conventional temperature sensors, the thermal characteristics is principally determined by the choice of platinum or nickel as the basic material together with known technological parameters. At the end of the manufacturing process, only the absolute value of the resistor at a fixed temperature can be accurately trimmed with a laser. Important parameters such as the temperature coefficient of resistance (TCR) or the coefficients of the higher order are fixed and can no longer be changed. |
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The solution
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With the MultiSens universal temperature sensor, we have created a product which utilizes the advantages of thin-film sensors such as reliability, accuracy, long-term stability, exchangeability and small size and largely eliminates the disadvantage of dependence on the thermal characteristic of the basic material. The principle of this complex thin-film sensor is based on a multiple number of trimmed resistors with different, well-defined thermal characteristics which are connected in a network. A special computer program calculates the individual nominal values of the individual resistors which are then accurately aligned by laser trimming during the manufacturing process. Thanks to this technology, a very broad band of sensor characteristics can be covered. |
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