Thickness gauges from the QM20 series, in standard resolution and with an RS485 interface.

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    Terms and Conditions
    Lead time 4-6 weeks

    QM20-4-H / RS485 / High resolution

    EDFelectronics offers so called PC based thickness rate monitors QM20 series, which combine the functionality of an oscillator and measurement converter. All monitors are installed between sensor head and superior control unit (e.g. PC or PLC) on atmosphere. The transducer delivers information about quartz frequency, rate, thickness and crystal health via a serial line like RS232, RS485, USB or PoE QM20 series are available with standard and high resolution.

    Technical specifications:


    RS-485 2-wire

    Resolution (@ 6MHz)

    0.01 Hz

     Frequency operation

    6 MHz


    2 ( One channel with internal Built-in oscylator only )

    External oscilator

    YES - in only one channel

    RS cable length

    20m max (1.5 m included)