The Testomat 2000® DUO is a special design of the Testomat 2000®.You can measure 2 different parameters simultaneously, e.g. 2 measuring ranges for water hardness or water hardness and alkalinity. The monitoring of 2 measuring points is possible and there is an automatic measuring point switch over with possible suppression of the input contact.



  • use in two circuits with different hardnesses
  • measurement of inlet and outlet hardness


Measuring range

0.05-25 °dH Water hardness
0.5-20 °dH Alkalinity
1-15 mmol/l p-value
0.05-0.5 mmol/l minus m-value
(depending on the choice of the indicator)


Technical Data

Power supply: 230–240 VAC, 115 VAC, 24 VAC all 50–60Hz
Power consumption: max. 30 VA
Protection class: I
Degree of protection: IP 65
Ambient temperature: 10–45 °C, 50 – 104°F
Option: booster pump see accessories
Dimensions (B x H x T): 380 x 480 x 280 mm
Weight: approx. 9.5 kg
Menu languages: German, English, French, Italian, Polish


Mains water supply

Operating pressure:
1 to 8 bar (15 to 116 psi) or
0,3 to 1 bar (5 to 15 psi), after removing of the valve body out of the regulator/filter housing
Water inlet: Opaque hose with 6 mm external diameter/4 mm internal diameter
Water outlet: Hose with 6 mm external diameter/4 mm internal diameter
Water temperature: 10 to 40 °C; 50 to 104°F

Here you will find available indicators for the Testomat 2000® DUO.
Select accessories in the product search to find e.g. pumps, filters and service sets for the Testomat 2000® DUO.