A portable scaler

J. H. Thorngate; J. E. Parks

doi:10.1097/00004032-196603000-00012

A portable scaler

J. H. Thorngate, J. E. Parks

Manufacturing Science Division

Research output: Contribution to journal › Article › peer-review

Abstract

A versatile, battery-operated, transistorized scaler was built for measurements in the field. It has a count capacity of 10⁸ – 1 counts from three transistorized decades and a mechanical register. The scaler has a double pulse resolving time of 7 μsec but is limited to 3 × 10³ counts/sec by the register driver circuit. Positive and negative input pulses greater than 100 mV can be counted, and a test signal is available for checking the circuits. Reproducible timed runs from 10 sec to 10 min are possible using a built-in timer. A regulated high voltage supply is included which is variable from 200 to 1500 V with sufficient current to operate a high resistance photo-multiplier tube dynode voltage divider. A special input is provided for use with halogen-quenched geiger tubes. The rechargeable battery will operate the scaler for 20 hr between charges, and a charger is included. The unit is 6 in. high by 9 in. long by 5 in. deep and weighs 10 lb.

Original language	English
Pages (from-to)	385-393
Number of pages	9
Journal	Health Physics
Volume	12
Issue number	3
DOIs	https://doi.org/10.1097/00004032-196603000-00012
State	Published - Mar 1966

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title = "A portable scaler",

abstract = "A versatile, battery-operated, transistorized scaler was built for measurements in the field. It has a count capacity of 108 – 1 counts from three transistorized decades and a mechanical register. The scaler has a double pulse resolving time of 7 μsec but is limited to 3 × 103 counts/sec by the register driver circuit. Positive and negative input pulses greater than 100 mV can be counted, and a test signal is available for checking the circuits. Reproducible timed runs from 10 sec to 10 min are possible using a built-in timer. A regulated high voltage supply is included which is variable from 200 to 1500 V with sufficient current to operate a high resistance photo-multiplier tube dynode voltage divider. A special input is provided for use with halogen-quenched geiger tubes. The rechargeable battery will operate the scaler for 20 hr between charges, and a charger is included. The unit is 6 in. high by 9 in. long by 5 in. deep and weighs 10 lb.",

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A portable scaler

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