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    Digital Counter, 6 Digit, Frequency/Rev/Speed

    $73.02
    Digital counter is suitable for measuring the frequency, rotational speed, linear speed and flow of various types of control equipment. 6 digit counters can be customized as special test instrumentation for pulse width detection, duty ratio detection, etc.
    SKU: ATO-DIGC-FA6
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    Free shipping
    Delivery date: 6-12 days

    Digital counter has 6 digit display, frequency/rev/linear speed measuring function, DC 12V/24V external power supply.

    Features:

    • Various parameter settings, simple operation.
    • Input: Various waveform pulses (square wave, triangle wave), proximity sensor, photoelectric sensor, voltage signal, contact switch, encoder, etc.
    • Digital counter can also be used to measure the power frequency (AC 0-600V), measurement range: 0.01Hz-100KHz, resolution: 0.01Hz.
    • 6 digit display, decimal point automatic conversion.
    • Input/output signals photoelectric isolated, anti-interference ability.
    • Digital output: Up to 3 alarms, high value, low value, high and low value alarm modes are optional, analog output: 4-20mA or 0-10V transmission output, measuring range setting arbitrarily.
    • Standard RS232 or RS485 MODBUS RTU communication, can be directly connected with computers, PLC or other equipments.

    Specification:

    Mode ATO-DIGC-FA6
    Weight 350g
    Accuracy 0.1%±2 digit
    Power supply AC 220V/110V±15%, AC 90-260V, DC 24V±10%, power dissipation≤5VA
    Input signal Pulse signal, square wave, sine wave, 5V≤H≤30V, 0≤L≤2V, rising edge trigger, frequency: 0.01~10KHz, 1Hz-100KHz
    Display counting range -199999~999999
    Input impedance ≥10KΩ
    Transmission output 4-20mA, 0-10V, etc. (range can be set)
    Insulation resistance ≥100MΩ (between DC 500V power terminal and external terminal)
    Dielectric strength AC 1500V 1min (between power terminal and external terminal)
    Environment Ambient temperature: 0~50°C, relative humidity: 35~85%RH
    External power supply DC 12V±5%, 50mA max / DC 24V±5%, 30mA max
    Protection class IP65

    Selection table:

    Dimention (length*height*depth) Power supply AL1 AL2 Communication interface External power supply
    4: 48*48*80mm with hole size 45*45mm;
    8: 96*48*80mm with hole size 92*45mm;
    9: 96*96*80mm with hole size 92*92mm;
    10: 80*160*70mm with hole size 75*152mm
    V0: AC 90-260V;
    VE: AC/DC 12-30V, or DC 24V
    N: No output;
    R: Relay;
    S: SSR/LOGIC
    N: No output;
    R: Relay;
    S: SSR/LOGIC
    C0: No communication;
    C2: RS232;
    C4: RS485
    A: DC 12V/30mA;
    B: DC 24V/30mA;
    C: DC 5V

    Wiring diagram:
    Digital counter wiring diagram
    Tips: Error of digital counter

    1. Quantization error
      In the digital measurement of frequency, the measured quantity is not exactly an integral multiple of the standard unit. So there is a part of the time not counted in the quantization process cause the error. Besides, the gate opening and closing time are out of sync (random) with measured signals, which will cause plus or minus error of digital counter.
    2. Trigger error
      Under the influences of interference signal, the gating pulse let the triggering advanced or lagged, and then trigger error is caused.
    3. Standard frequency error
      Under the influences of the external environment or its own structural performance and other factors, the standard frequency (such as the crystal oscillator) adopted by digital counter will produce drift, and then standard frequency error is introduced.
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