The generous dimensions of the chamber accommodate many object sizes and shapes. The stainless steel lining is easy to de-contaminate and offers rugged protection to the detectors. The GTM is available with either one or two doors. The six-detector version features additional detectors in the front and back. Clever packaging details allow for a true, 4-pi shield configuration without compromising accessibility for servicing.
Background is updated using an exponential moving average.
The background response time is controlled by the user-input weighting factor. The alarm set point in this mode tracks background in accordance with the acceptable false alarm probability determined by the user. The count time used in the maximum sensitivity mode is fixed by the user. Using all statistical constraints, i.e., false alarm probability, confidence level, background count rate and RDA, the system will complete the measurement in the minimum time required. Each additional detector adds 25 lbs.