Analog measurement technology
In this category, you will find measurement, control, and regulation systems that operate entirely analog and, in most cases, do not require auxiliary power.
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TVM
The analogue voltage monitoring relay TVM monitors the traction voltage of DC tracks using robust analogue measurement technology. It works without auxiliary voltage.
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WITT EPM 4 | earth potential measurement device EPM 100
monitors earth potentials without auxiliary voltages
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WITT EPM 80 | Erdpotentialmessgerät
Überwacht bis Erdpotentiale frei einstellbare 60 – 120 V Schwellwerte
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