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01-03-2007

The site has a new look.

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A4454-Analog I/P Rate Indicator & Batch Totaliser

A4455-Analog I/P Flow Rate Indicator with Sqr. Root

A4458-Pulse I/P Rate Indicator & Batch Totaliser

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A4444 - Autotune PID Controller
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   AUTOPRO PRODUCTS ... Updated 01-03-2007
µC BASED FLOW & BATCH CONTROLLERS
A4458 - PULSE I/P FLOW RATE INDICATOR WITH TOTALISER
Features Description Applications Specifications Ordering
Info
Dimensional
Details
Wiring
Diagram

     DESCRIPTION

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The Model A4458 Pulse Input Rate Indicator & Totaliser is a flow/production rate indicator and batch totaliser. The input pulse rate is multiplied by a floating point flow constant, filtered by digital signal filter and indicated in 4 digits to show the pulse flow/production rate in user selected volume/production and time units. This flow is integrated by the microcontroller to get the total flow (batch) since the controller was last reset.

The input signal can be from voltage outputs from proximity switches or contact closures. The excitation voltage for the proximity switch can be supplied from the unit itself.

The integrated total is displayed on a 6 digit display with floating or fixed decimal point resolution. The internal accuracy of this unit is 12 digits. Only the most significant 6 digits are displayed. When the total overflows the display flashes "over". The total can be reset from the facia key or locked out by disabling it. There are external reset and enable inputs. All inputs are isolated from the control circuitry. All parameters are protected from unauthorised changes by password protection and keypad lockout. The non volatile memory is used store all parameters.

 
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