Section 7 Alarms; Alarm Indication - Hach Anatel PAT700 User Manual

Section 7

7.1 Alarm indication

Alarms
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
Figure 98 Online TOC mode, current tab, in alarm condition
• The animation area continues to flash red until a user acknowledges the alarm. See
Alarm acknowledgement, page
• 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.
118.
Figure 98.
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