Pentair AUTOTROL LOGIX 742 - Cycle Time Calculation; Injector Flow Rates

Installer manual Autotrol Magnum 293 - 298 Logix 742-762 - System sizing
Ref. MKT-IM-012 / D - 03.02.2022 31 / 110
Media Tank diameter
14"
(35.6cm)
Tank
16"
(40.6cm)
Tank
18"
(45.7cm)
Tank
21"
(53.3cm)
Tank
24"
(61.0cm)
Tank
30"
(76.2cm)
Tank
36"
(91.4cm)
Tank
Multi Layer
(15gpm/ft
2
)
(36.75m/h/cm
2
)
15 20 25 36 50 70 105
Birm, Greensand,
Carbon
(10gpm/ft
2
)
(24.5m/h/cm
2
)
10 15 17 25 30 50 70
* 10°C water temperature, 50% bed expansion.
4.2 Cycle time calculation
All the Logix controller range automatically calculates the unit capacity as well as the cycle time.
No calculations are therefore required.
4.3 Injector flow rates
The following graphs represent the injectors flow rate as a function of the inlet pressure for the
different injector sizes.