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Model 2241-2RK
Technical Manual
Section 8
Ludlum Measurements, Inc.
Page 8-5
July 2012
POSITION 5
:
AUDIO DIVIDE BY
selects the audible clicks-per-event
division rate for the current detector setup. If the
AUD ON
/
OFF
switch is
in the
OFF
position, no audible clicks-per-event will be heard.
This parameter ranges from:
0 = Divide By 1
1 = Divide By 10
2 = Divide By 100
3 = Divide By 1000
POSITION 6
:
RESPONSE TIME
allows changing the time constant (TC)
for the current detector setup. If the response is set to 0, the Model
2241-2 automatically calculates (for variable mode) the time constant
based on the incoming cps. If a variable of 1-199 is entered for TC, the
response time becomes fixed.
Variable Response
- Response time is varied in proportion
to the incoming count rate. The 2-position
F
/
S
(Fast/Slow)
toggle switch selects the maximum time constant (TC) for
the variable mode. The fast position varies the TC from 4-
25 seconds, and the slow position varies from 4-60 seconds.
Fixed Response
- The Fast (
F
) response position is
programmable from 2-50 seconds, and the slow response is
5 times the fast TC. For MDA-type measurements, the
fixed response time mode is recommended.
POSITION 7
:
RATEMETER ALARM
/
ALERT
allows changing the ratemeter
alarm for the current detector setup. The units of this alarm are the same
as the units for the ratemeter display. The fifth push of the left button
allows the decimal point to be moved. The ratemeter alarm adjusts from
1 to 999 R/hr (or Sv/h) or 1 to 999 kcpm or 1 to 100 kcps. The units of
the alarm are determined by the units for the ratemeter.
POSITION 8
:
SCALER ALARM
/
COUNT TIME
sets the scaler alarm variable
from 1-999999, corresponding to the accumulated scaler count. After
the scaler alarm variable is entered, the scaler count time is prompted.
The scaler count time is adjustable from 1-9999 seconds.
POSITION 9
:
NOT USED
Summary of Contents for 2241-2
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