Unacknowledged Alarms Mode; Main Display Mode - GE Hydran 201i Instruction Manual

5.2.1 Unacknowledged Alarms Mode

An alarm condition exists when a variable (such as gas level, gas trend or sensor
temperature) has exceeded the predetermined limits ("alarm setting").
explained in detail in Chapter 11; all alarm messages are given in Section 13.1.
The unacknowledged alarm messages are always displayed in priority. When an
alarm occurs, the Main Display mode is immediately replaced by the Unacknowledged
Alarms mode. If two or more unacknowledged alarms are present, the display scrolls
through their messages at the rate of one every five seconds.
The user acknowledges each alarm by pressing the ENTER key for each alarm
message. The flashing messages are then removed from the list one at a time. The
H201Ti returns to the Main Display mode when the user has acknowledged all alarms.
Acknowledged alarms that are still active are shown as non-flashing messages in the
Main Display list (see Table 5-1). When an alarm condition disappears, this message is
removed from the Main Display list.
Almost all alarm messages are displayed as follows, whether the alarm is
unacknowledged (flashing) or not (alarm condition still present):
• The top line displays the alarm message (the name of the parameter that
triggered the alarm) followed by the alarm state: LL (Low-Low), L (Low), H (High) or
HH (High-High).
• The bottom line displays the parameter's alarm set point (not the measured
value). The LL, L, H and HH alarm set points can all be adjusted and turned off.
In this first example, the actual display is on the left and the comments are on the right:
Gas HH
300 PPM

5.2.2 Main Display Mode

When the H201Ti is operating properly (no unacknowledged alarms, keypad unused),
the messages shown in Table 5-1 below are displayed at the rate of one every five
seconds.
Note: The display shows the alarm setting that was exceeded, NOT the actual value of the
variable in alarm.
Display
Alarm message
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Gas High-High alarm
Gas level above 300 ppm
Displayed only if an alarm occurred, if it was acknowledged
Hydran* 201i Instruction Manual
Description
Alarms are
MA-033 Rev. 14.0, 12-Nov-18