| WEIGHING SYSTEMS |
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Comptrol weighing systems provide a fast, accurate, non-destructive method of monitoring and controlling quality for continuous manufacturing, assembly, and packaging applications. Unlike total weight measuring devices, Comptrol weighcells measure the difference between the actual part weight and the pre-set ideal weight of the part.
Defining the acceptable weight range in terms of the deviation limits instead of a total weight range, provides a more precise measurement of the actual part weight making it possible for the weighcell to quickly detect deviations as small as 0.1 gram. Typical application include batching, check weighing, component verification, dispensing, fill-to-weight, machine-to-weight, and mixing or sorting.
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| Comptrol Digital Rodcell |
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Comptrol’s Digital Rodcell Systems are an industry standard in manufacturing and engine plants around the world for weighing and balancing automotive and diesel connecting rods.
The Rodcell simultaneously weighs the pin and crank end to determine the difference between the actual weight and the desired ideal weight for each end. The deviation is converted to an electrical signal directly proportional to the amount of over or under weight. |
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100 weight samples per second |
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RS-232 and RS-422 Serial Outputs |
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+/- 0-10VDC output |
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Integral microprocessor electronics with signal processing firmware |
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In-Line and Stand-Alone systems available for in-process weighing or off-line inspection applications |
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SPC/SQC interfaces |
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Simultaneously weigh the pin and crank end of a connecting rod |
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Automatic Re-Zero |
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Pushbutton Calibration |
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Automatic weight transfer compensation |
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Standard CRI-4000 indicator or custom indicator & control systems |
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Part locator (cradle) to meet customer part geometry and specifications |
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Comptrol Weighcell Overview
By simply weighing a part or assembly, it is possible to determine the quality requirements such as: too many or missing components, the amount of material that has to be applied or removed, or if the proper amount of material has been applied or removed.
Comptrol Weighcell Systems provide the reliable weighing accuracy required for pre-process and post-process weight verification. The simplicity of their rugged design adds to the reliability of the system. It also allows each system to be configured to match customer part specifications and installation requirements for high volume automated production lines or stand alone inspection station.
Unlike total weight measuring devices, Comptrol Weighcells measure the difference between the part weight and the pre-set ideal weight of a good part. Defining the acceptable weight range in terms of the deviation limits instead of a total weight range, provides a more precise measurement of the actual part weight. This makes it possible for the Weighcell to quickly detect deviations as small as .01 gram.
When weight is applied, the Weighcell converts the measured weight deviation into a DC electrical output signal, directly proportional to the weight deviation. The signal is measured in volts so the Weighcell can be connected directly to a Comptrol Weighcell control, programmable controller, workstation, or system controller. Costly additional electronics are not required to amplify the signal.
Comptrol Weighcell controls sample the part weight at a rate of 100 times per second. The control compares each sample to the programmed ideal part weight. When the sampling is complete, the control averages the readings. The total part weight is calculated based on the programmed ideal weight plus or minus the average deviation. The control may also provide an output signal for controlling other functions, such as machining, filling, or the operation of the part transfer system.
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