Pt-MU

Description

Measuring transducer for temperature (resistance thermometer)

Application
The measuring transducer Pt-MU is used for the transformation and isolation of a change in resistance due to the temperature into an impressed direct current and direct voltage signal. The calibrated double outputs are switchable between 0-20 mA and 0-10 V or 4-20 mA and 2-10 V.

Function
The resistance thermometer Pt 100 is a resistance depending on the temperature. A constant measurement current flows via the resistance thermometer to a sensor resistor which is part of a bridge circuit. The direct voltage generated there is linearized and amplified. It is then transformed into an impressed direct current and in an impressed direct voltage in a subsequent circuit. The galvanic isolation is realized using an optocoupler. Both outputs are no-load proof and short-circuit proof. Connecting the two outputs is not permissible. An auxiliary voltage is required.

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