Carrier-Frequency Pulse Amplifiers (VTE 04)

Carrier-Frequency Pulse Amplifiers (VTE 04)

The carrier-frequency pickups detect the r.p.m. of KEM flow meters. Each passing of a tooth will be detected contactless and produces a pulse at the output. Therefore each pulse corresponds to a fixed volume and the frequency corrresponds to the volume flow. Versions with Push Pull output or NAMUR output (option: open collector output npn) are available.

The VTE 04 are directly plugged and screwed. There are suitable versions for ZHM01/1 and ZHM 01/2 in cartridge construction, as well as for the LFM.

Technical Data

  • Supply Voltage: UB: +5 up to 30 V DC
  • Quiescent Current: IR < 1 mA
  • Frequence Range: 0.5 up to 5,000 Hz depending on flow meter
  • Ambient Temperature: -40 °C up to +80 °C [-40 °F up to +176 °F], depending on version
  • Medium Temperature: -40 °C up to +80 °C [-40 °F up to +176 °F]
  • Output Signal: Push-Pull, Open-Collector (option) or NAMUR
  • Ex Protection:
    • ATEX: II 2G Ex ia IIC T4 Gb
    • IECEx:
      • Ex ia IIC T4 Gb cCSAus: Class I, Div. 1, Groups A, B, C, D ; T4
      • Ex ia IIC T4 Ga
      • Class I, Zone 0 AEx ia IIC T4 Ga

Evaluation Electronics

  • Panel Mount Displays with analog and frequency output (FAS 100)
  • Wall Mount Displays with analog and frequency output (FAW 100)
  • Frequency to Analog Converter (FAU 50)
  • Intrinsically Safe Supply Unit (EWS)
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