RSDetection
User’s Manual
Copyright © 2016 General Electric Company. All Rights Reserved S131-200-UM Rev A
Page 53
Figure 32 Calibration Setup with No Shield
6.3 SENSOR SENSITIVITY MEASUREMENT
After completing the equipment setup, complete the following steps to record the sensor
sensitivity at various increments.
THE RADIATION SOURCE SHOULD BE AT THE 10’ MARK WHEN COMPLETING THE FIRST
READING.
1. Connect power to the sensor and turn it on.
2. Remove the shield so that the source is not obstructed from the sensor. Refer to Figure 32.
3. Allow the signal to stabilize for approximately one minute and then start recording the
data to the data collection system for a sufficient time period to obtain a stable reading.
4. Move the shield into place between the source and the HPIC. Refer to Figure 33.
THE SHIELD CENTERLINE MUST BE INLINE WITH THE CHAMBER CENTERLINE TO THE
SOURCE. THE SHIELD MUST BE PLACED BETWEEN THE SOURCE AND THE SENSOR SO
THAT IT COMPLETELY SHIELDS THE DETECTOR FROM THE SOURCE.
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