TSI Instruments SUREFLOW 8635-M, Руководство по эксплуатации и обслуживанию, Страница: 23 / 49

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ALARM MENU
MENU ITEM SOFTWARE
NAME
ITEM DESCRIPTION ITEM RANGE DEFAULT
VALUE
END OF
MENU The END OF MENU item informs the user that the end of a
menu has been reached. The user can either scroll back up the
menu to make changes, or press the
SELECT or MENU key to
exit out of the menu.
ALARM CONSTRAINTS
There are a number of constraints built into the software that prevent users from programming conflicting alarm information. These are as
follows:
1. Remote alarms. The remote alarms are only active when the switch input (pins 11 and 12) is closed. When the remote
alarms are active, the standard alarms are turned off.
2.
The SureFlow monitor
is programmed not to allow the pressure alarms to be programmed within 40 ft/min (+0.00028 “
H
2
O at 0.001 “H
2
O) of each other.
Example: The LOW ALARM set point is -
0.00072 “H
2
O. The HIGH ALARM set point cannot be set lower than
-
0.00128 “H
2
O.
3.
The alarms, both standard and remote, can be programmed for positive or negative pressure. However, both the low and
high alarm must be set either positive or negative. The DIM does not allow one positive alarm and one negative alarm.
4.
Alarms do not terminate until the pressure exceeds the alarm set point. The alarm set point must be slightly exceeded
before alarm will terminate.
5. The ALARM RESET item selects how the alarms will terminate when monitor returns to the safe range. The pressure and
flow alarms all terminate the same; they are either latched or unlatched. If unlatched is selected the alarms automatically
turn off when the value slightly exceeds the alarm set point. If latched is selected the alarms will not terminate until the
pressure exceeds the alarm set point
and the RESET key is pressed.
6.
There is a programmable ALARM DELAY (and optional DOOR DELAY) that determines how long to delay before
activating the alarms. This delay affects all pressure and flow alarms. The door delay is active when switch input (pins 11
and 12) is closed.
7.
The MUTE TIMEOUT item temporarily turns the audible alarm off for all pressure and flow alarms.