CLIMET INSTRUMENTS CI-154, Руководство пользователя, Страница: 35 / 98

CI-154 User’s Manual
Page 25
2.8 Setting alarms
2.8.1 Setting alarm levels
Press [
SET
-
UP
] from the main data screen, then the [
ALARMS
] key on the bottom of
the following menu. In the alarms menu screen you will find keys for the four
particle channels, followed by a box that either contains the alarm value previously
set, or the word
OFF
. If you press one of the keys for the particle sizes, you are
taken to a screen with a numeric keypad that allows you to enter the desired alarm
value. Press the keys to enter the number, then press [
ENTER
] or [
EXIT
]. This will
return you to the menu listing the alarms, and the word
OFF
will have changed to the
new number.
Alarm violations are independent of the displayed counts when the display is set to
differential mode or concentration mode (
PER CF
,
PER CM OR PER L
). The alarm violation
is tripped when the actual cumulative counts for the alarm are reached.
To clear an existing alarm, press [
SET
-
UP
], then [
ALARMS
]. From the alarms menu
select the alarm key for the alarm that you want to clear. On the screen with the
numeric keypad press [
OFF
] or [0] (zero) to turn the alarm off.
To set alarms for Flow, press the [
MORE
] key from the alarms menu. Press [
HIGH
] or
[
LOW
] and set the appropriate alarm in the same manner as you set the particle
channel alarms. The alarm value entered represents the actual reading by the unit
at which point it will alarm. For example, a high flow alarm of 110% and a low flow
alarm of 90% will allow an acceptable flow window of ± 10%. Press [
EXIT
] to return
to the main screen.
2.8.2 Beeper mode
The CI-154 lets you choose whether to have an audible annunciator when keys are
pressed. To enable or disable the key annunciator, press [
SET
-
UP
], [
ALARM
], [
BEEP ON
KEY
] to disable (yellow) or enable (green) this function. Press [
EXIT
] three times to
return to the main screen.
The CI-154 can be set to beep whenever a particle is detected. This is useful,
because you can use the instrument—much like a Geiger counter—to home in on
contamination sources in a clean area. As you approach the source of
contamination, the beeps occur at a faster rate, and as you move away from the
source, the beeps become less frequent. To enable this function, press the [
BEEP ON
COUNT
] key from the alarms menu. The key will be green when enabled, and turn
yellow when disabled.
When setting alarm levels, the CI-154 does not automatically enable the audible
alarm. From the alarms menu, you can enable alarms (green) by pressing the [
BEEP
ON ALARM
] key, or disable (yellow) audible alarms by pressing this key when it is
green.
When the audible alarm (
BEEP ON ALARM
) is enabled, you can choose whether the
alarm will persist until a key is pressed, or you may opt to have the alarm
automatically turn off at the start of the next sample. When the particle counter is in
an occupied room, you would want the alarm to shut off automatically, so that
someone does not have to get up to turn off the alarm. However, if the particle
counter is placed in an unoccupied area, you may want the counter to continue
sounding until someone enters the area, so they know that there has been an alarm
violation. To require acknowledgement of the alarm in remote areas, press [
REQUIRE