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ActionPAK® AP4570 Track-Hold/Peak-Hold Process Function

Provides Signal "Track & Hold" or "Track & Peak Hold" Capability.

  • Digital Design Prevents Output "Droop"
  • Peak Detection Applications
  • Low-Cost "Sample & Hold" Applications
  • AC Line Powered
  • Three Year Warranty


The AP4570 offers two modes of operation - Track & Hold and Track & Peak-Hold. In "Track & Hold" operation the output tracks the input signal. When an external contact is closed, the input level is "saved" and its corresponding output signal is held indefinitely until the contact is opened. Releasing the hold switch (pins 8 and 11) allows the output to again follow the input. The "Track & Peak- Hold" mode is similar to "Track & Hold" operation except upon contact closure (pins 8 and 11) the highest input is "saved" and the corresponding output is held until a higher signal level occurs.

Model AP4570 is useful in capturing DC-input signals to be held for further processing or signal-conditioning. Typical applications include monitoring peak electrical or energy demands, capturing process conditions such as flow rates, equipment protection and taring to factor out unwanted dead weight.

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CTH Controls Inc.   CTH Controls Inc.
5100 South Service Road, Unit 2
Burlington, ON. L7L 6A5 Canada
Phone: 905-792-6829
Toll Free: 1-888-550-6829
Fax: 905-792-6902
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