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Section 9: Alarm Relay Functions Instruction Manual
April 2017 LIQ-MAN-56
72 Alarm Relay Functions
A typical application for totalized flow relay activation is controlling chemical dosing in reactors.
A schematic of the Totalizer timer operation is shown:
9.5.2 Setup
Access Totalizer Timers by pressing ENTER/MENU from the main screen and then Program/Relays/
Configure Relay. From the main relay programming screen, program this feature as follows:
1. Relay: Assign a relay by highlighting the desired relay 1-4 and press ENTER/MENU.
2. Type: Select Totalizer timer as the relay type and press ENTER/MENU.
3. Assign: Assign Pulse flow S1 (sensor 1) or S2 (sensor 2) as the measurement input and
press ENTER/MENU.
4. Active relay after: Enter accumulated volume (XX.XXXX) and units of measurement
(gal, thousand gal, million Gal, trillion Gal).
5. On time: Enter the time in minutes (X.X min) for the relay to remain energized. The
assigned measurement value will be on hold during this time.
6. Normal state: Set the normal alarm condition as Open or Closed and press
ENTER/MENU. Program the normal state to define the desired alarm default state to
normally open or normally closed upon power up.
9.6 Interval Timer
9.6.1 Description:
The interval timer august be used for periodic sensor cleaning or periodic process
adjustment. The cycle begins at the Interval time when the switch is turned on. When the
Figure 9-4. Totalizer alarm operation
time
relay on
time
X volume
accumulated
X volume
accumulated
Relay Function Limits and Selections Default
Totalizer Based Timer NA NA
Activate relay after 0 to 99.9990 10
units Gal, Liters, cuft,m3 accumulated E3gal (x1000 gal)
accumulated
On time 0 to 999.9 min 0 min
Normal state Close/Open Open
Table 9-5. Defaults and programmable limits