Eberline ESP-1 - Page 23

After the + is pressed above to accept the suffix, the display will then present the selection of
prefix as follows:
PREFIX (VALUE)
+ = USE/- = NO
The prefix is the value by which the base unit is multiplied to provide a more convenient unit
of actual measurement. Four are available:
(NONE) no prefix
μ micro (x 105)
m milli (x 10?)
k kilo (x 10°)
If the prefix displayed is not the desired value, then press - to reject it and call the next choice
to be displayed. When the desired prefix is displayed, press + to select it. The setting of
radiation units to be measured would now be complete. An example of this would be:
PREFIX BASE SUFFIX
m R /h
(milli) (roentgen) ` / (hour)
The units may be selected in any combination of prefix/base/suffix. Press the + switch to select
the prefix.
Setting the Calibration Constant (CC)
a. Definition of Calibration Constant:
The calibration constant (CC) is the number used to convert the counts from the detector
to the previously displayed base unit. Specifically, the displayed rate meter reading is
derived by dividing the counts per seconds (from the detector) by CC and then scaling the
result based on the selected prefix and suffix.
b. Display of Calibration Constant (CC) Setting:
If the current value for the units was accepted by pressing + (step 2 above), the display will
read:
CC z (NUMERICAL VALUE)
RATE METER READING
C. Selection of "CC" for detectors which were purchased with the ESP-1 from the factory:
If a detector was purchased with the ESP-1 from the factory, the calibration constant will
already be set at the factory for this detector and the following section may be bypassed
until a different type of detector is to be used with the instrument, or until time for routine
recalibration of the instrument.
ESP1.MAN/February 1992 2-11