process indicator / frequency / digital / wall-mounted
2800-2051 Nokeval

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Characteristics

  • Measured value:

    process, frequency

  • Display:

    digital

  • Type:

    wall-mounted

  • Other characteristics:

    4-20 mA

  • Applications:

    for sensors

Description

The field display is designed for pulse sensors, whose frequency will be measured. The inputs are NPN-, PNP-, Namur -sensors, closing contact or a pickup-sensor. The front panel has large 20-mm-high red LED digits, the readability of which is about 10 metres.

The input frequency range 0,0001Hz..5 kHz is exceptionally wide starting with extremely low frequencies. The display is scaleable on the whole frequency range, e.g. 0-1,23 Hz can correspond to the range 0-5000 on the display . Output is freely scaleable on the basis of the display, e.g. 4-20 mA. The measuring method applied for low frequencies is to measure the time interval between two incoming pulses and for higher frequencies to measure the frequency.