Due to the unpredictable nature of sinusoids, referencing peak voltages for system interaction could prove to be problematic, if the waves themselves are not perfect RMS values of sinusoidal voltages are used to ensure a clear parameter that can be used reliably in a control system. The necessity of having a true RMS voltage value from the sensor can make all the difference. Enter: the Knick Interface P41000 TRMS. This device is an AC/DC high voltage transducer for True RMS measurement, with the ability to transmit input signals from VIN = 60 mV to VIN = 10 V AC.

https://www.knick-international.com/en/products/interface-technology/proline/high-voltage-transducers/varitrans-p-41000-trms/

It reliably isolates high potentials at the input circuit. Thanks to the true RMS conversion in the transducer. Even distorted input signals are captured correctly and output as true RMS values. The isolating distances within the device are designed to withstand permanent voltages up to 3600 V AC/DC and fast transients up to 20 kV.

Facts and Features:

-Universal usability:
      AC Input 60 mV~ to 10 V~
      DC output 0 (4) … 20 mA, 0 … 10 V
-Compact modular housing: 22.5mm wide
-Working voltages up to 3600 V AC/DC
-Protection against electric shock: through protective separation up to 1800 V AC/DC according to EN 61140
-Test voltages up to 15 kV AC
-Excellent transmission properties:
          Gain error Crest factor ≤ 3 < 0.5 %
          Gain error Crest factor 3 … 5 < 1 %
          Response time T90 < 150 ms
-Virtually no influence from common-mode voltages: CMRR approx. 150 dB
-Calibrated switching of up to 16 input/output ranges
-VariPower 20 V to 253 V AC/DC broad-range power supply
-Reliable function even with unstable supply
-No damage in the case of erroneous power connection
-Robust construction thanks to vacuum encapsulation
-Mechanically stable for operation on ships, rail vehicles and land vehicles
-5-year warranty