diff. press. contact pressure gauge DDM 25 | Wilo

diff. press. contact pressure gauge DDM 25

Technical data
Tender text

Differential pressure contact pressure gauge for wall mounted installation with adjustable switchpoints for automatic switchover of maximum/minimum speed stages or of the maximum to minimum speed stages with Wilo single or double pumps with multi-speed motors.

Only in conjunction with the corresponding switchgears.

Differential pressure switch with differential pressure display, configurable maximum/minimum contacts, integrated pressure surge throttle.


Pressure gauging lines and 3-way pressure gauge taps must be procured by the customer

Shielded cable upon extension by customer:

  • Up to 100 m: 3x1.5 mm2
  • Up to 250 m: 3x2.5 mm2

Scope of delivery

  • Differential pressure contact pressure gauge DDM
  • 5 m shielded cable 4x0,75mm2(for connection to switchgears)
  • 2 self-cutting screw union connections in accordance with DIN 3862 Ms, for 6 mm pipe
  • 2 bracket self-cutting screw union connections R ⅛, for 6 mm pipe
  • 2 pipe connection bushing R ⅛ in accordance with DIN 2986 St, for 6 mm pipe
  • Installation and operating instructions
Technical data
Max. contact capacity
250 V / 1A AC
Max. operating voltage
250 V
Switching capacity
max. 250 VA
Protection class
Min. measurement range
0 bar
Max. measurement range
2,5 bar
Maximum pressure rating
Min. fluid temperature
0 °C
Max. fluid temperature
70 °C
Min. ambient temperature
-10 °C
Max. ambient temperature
70 °C
Output function
2 x switching contact
Measuring accuracy
± 2.5 % of measurement range end value
Net weight, approx.
1,7 kg
Item no.

Certificate REACH (Documents)

REACH regulation

Article Number
Edition 2020-08
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (158 KB)