Dimensional Sketches - Grundfos DDI 222 Series Installation And Operating Instructions Manual

4.4.3 Dosing control (Flow Monitor)
The pressure sensor (Flow Monitor pump option) is used as a
dosing controller and to monitor the pressure for the whole power
ranges.
The Flow Monitor for dosing control consists of a pressure sensor
integrated in the dosing head.
The pressure sensor is available as Flow Monitor pump option.
The pressure sensor is fitted to the pump on delivery.
Upgrades are not possible.
Pressure control is primarily used to protect the
pump. This function is not a substitute for the
Note
overflow valve.

4.5 Dimensional sketches

MLS
D1
C4 C1
DS
10
Fig. 4 DDI 222
Dimensions for DDI 222
A3
[mm]
DDI 60-10 283
DDI 150-4 315
DDI 60-10 / HV 295
DDI 150-4 / HV 315
10
A4
A3
Ø7
16.5
(159)
172.5
207
A5
A4 A5 B3
[mm] [mm] [mm]
338 306 137
372 350 137
350 328 137
372 350 137
4.4.4 Flow compensation
The flow compensation is a function to keep the dosing flow
constant with changing system pressure. Pressure changes are
detected by the pressure sensor and the motor speed is adjusted
accordingly.
To use this function, pressure control or dosing control (Flow
Monitor) has to be activated in the electronics.
When dosing media with a viscosity similar to
water, the pump needs not to be calibrated, as
the pump already responds to the possible
change of the system pressure.
Note
When dosing media with a viscosity different
from water or after a software update, the pump
has to be calibrated.
61.5
105
123
B3
B4
MBS: Diaphragm leakage sensor (optional)
DS: Pressure sensor (Flow Monitor pump option)
B4 C1 C4
[mm] [mm] [mm]
- 58 37
139 90 39
- 68 38
139 90 39
H2 H3
D1
[mm] [mm]
R 5/8 252 153
R 1 1/4 265 179
R 1 1/4 246 143
R 1 1/4 265 179