Grundfos TPE Series - Page 29

English (GB)
29
13.5.4 "Constant differential pressure"
The pump maintains a constant differential pressure,
independently of the flow in the system. See fig. 30.
This control mode is primarily suitable for systems
with relatively small pressure losses.
Fig. 30 "Constant differential pressure"
This control mode requires either an internal or
external differential-pressure sensor or two external
pressure sensors. See the examples below.
Fig. 31 "Constant differential pressure"
Controller settings
For recommended controller settings, see section
13.14 "Controller" ("Controller settings").
Pump variant
"Constant differential
pressure"
TPE, TPED, NBE,
NBGE, NKE, NKGE
●
TPE, TPED, NBE, NKE
Series 2000
●
TM05 7901 1613
H
Q
Examples
• Factory-fitted differential-pressure sensor, only
TPE, TPED, NBE, NKE Series 2000.
• One external differential-pressure sensor.
The pump uses the input from the sensor to
control the differential pressure. You can set the
sensor manually or by using the Assist menu.
See section 13.41 Assisted pump setup.
• Two external pressure sensors.
Constant differential-pressure control is
achievable with two pressure sensors. The
pump uses the inputs from the two sensors and
calculates the differential pressure. The sensors
must have the same unit and must be set as
feedback sensors. You can set the sensors
manually, sensor by sensor, or by using the
Assist menu. See section 13.41 Assisted pump
setup.
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