Home page › Production Monitoring

Production Monitoring

Rotem has developed the FDG Monitoring module to cope with the growing need for measuring the 511 keV emitters activity in radiochemistry laboratories. The activity monitoring module is currently used by CTI Cyclotron Systems Inc. to monitor the FDG activity in its new FDG production units.
The module is based on five detectors and an electronic board with two 0-10V analog outputs. The electronic board is used to amplify the current, received from a PN photodiode coupled to a scintillation crystal.

Detector specifications
Type	SD100
Radiation detection	Gamma above 100 keV
Detector	PN photo diode coupled with CsI (Tl) Scintillated
Sensitivity	2.6mV / 1mR/h
Measuring Range	0.01R/h – 8000R/h*
Temperature Range	Operation: -10° C to + 50° C Storage: -20° C to + 60° C
Dimensions (Including connector)	35 mm long x 23 mm diameter
Connector	BNC

* - 1 R/h is equivalent to the radiation field of 1 Ci of FDG at a distance of 22mm

Features and Specifications

Input voltage ± 15V
Offset adjustment
Linearity ± 10% in the range of 1 ¸ 8000R/h
Up to 5 meters cable between the detectors and the electronics
Two analog outputs voltage 0 - 10V for logging and control
On site calibration of the 0 - 10V output voltage for 0 - 5Ci activity range,
by gain adjustment.
Logic selection between detectors
Optional local display