Precision Pt 100 Simulator

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The unit houses a high-quality switch with precision wire-wound resistors made of ZERANIN®. It is installed in a handy and rugged metal casing (with DIN sockets). 24 set temperature values are simulated using the selector switch in accordance with DIN EN 6075 standard values for resistance thermometers (Pt 100). The simulated resistance value, corresponding in its value to the individually set temperature, is picked up at the “R_Sim”output socket. The four-wire connecting system permits the connection of a separate current and voltage path. Supply lead resistance is therefore eliminated and does not appear in the measurements.

The 24 temperatures are chosen to provide several calibration points suitable for most measuring instruments. The resistors are subject to careful artificial ageing before trimming. This special process and trimming about half the tolerance guarantee a long-term stability of < 0.01 % for years. The material used for the resistors, ZERANIN®, has a temperature coefficient of less than 2 ppm/K. Allowances for ambient temperatures are therefore superfluous.

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