Hach ANATEL PAT700 User Manual - Section 7
Page 117
Section 7
Alarms
7.1 Alarm indication
The analyzer has two basic operational modes: on-line and bottle. On-line TOC and
conductivity are the two primary on-line modes (although you can also select standby,
off-line, manual, or self clean). In on-line TOC and conductivity modes, the home screen
provides an on-screen animation indicating the general state of water flow through the
analyzer. In on-line TOC, conductivity, or manual TOC modes, the animation area also
serves as an alarm condition indicator. If an alarm occurs in an on-line mode, the
following sequence of events occurs:
•
When a TOC or conductivity alarm condition occurs, the home screen animation area
flashes red, the displayed value of the variable causing the alarm also turns red, the
PAT700 makes a sound (if a sound is programmed), the alarm icon is enabled, and
the alarm condition is written to the data log and audit trail. See
.
•
The animation area continues to flash red until a user acknowledges the alarm. See
Alarm acknowledgement, page 118
•
If the alarm has been acknowledged and the user returns to the home screen, the
animation area remains solid red until the analyzer completes a full cycle without any
errors.
•
Once a full cycle has occurred without any errors, the normal animation reappears.
•
If on the next cycle the same or a new error occurs, the animation area again flashes
red and must be acknowledged.
•
As long as alarms exist in the alarm log, the alarm log is accessible.
Figure 98 Online TOC mode, current tab, in alarm condition