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A TIMING UNIT FOR NUCLEONIC COUNTING

Journal Article · · Lab. Practice
OSTI ID:4081284
An apparatus was designed for the time control of a scaler used for radioactivity measurements. It has a range of 1 min to more Wan 1 1/2 hr. It can also be used for controlling an automatic sample changer. In operation, a contactor delivers a pulse every minute to the coil of a uniselector, causing the wiper arms to move on by one step. After the required number of minutes, preselected by a switch, the wiper arms close circuits which stop the timer will then not operate again untll the scaler is reset. A complete diagram of the circuit is included. The performance of the timing unit was checked by counting the 50count/sec test facility of the scaler for different times. It was found that the greatest deviation from the expected counts corresponded to a time difference of about 0.1 sec, whatever the counting period. (M.C.G.)
Research Organization:
Wellcome Research Labs., Beckenham, Kent, Eng.
NSA Number:
NSA-15-011244
OSTI ID:
4081284
Journal Information:
Lab. Practice, Journal Name: Lab. Practice Vol. Vol: 9
Country of Publication:
Country unknown/Code not available
Language:
English

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