Dosing computer EXADOS® ES/EGS – corrosion protection out of the canister

In residential buildings, the dosing computer EXADOS® ES and EGS are responsible for performing flow-dependent dosing of EXADOS® minerals. These protect the water pipes and the connected water-carrying system components (fittings, devices, operating equipment, domestic appliances, boilers, etc.) against malfunctions and damage due to scale deposits and/or corrosion. The output volume of the EXADOS® ES is 6 or 10 m3/h, that of the EXADOS® EGS between 20 and 100 m3/h. The complete dosing systems are suitable for the use of 10 or 20 kg transport canisters of dosing agent. Dosing computers EXADOS® ES and EGS each consist of a contact water meter with pulse transmitter for volume-dependent control and a control and pump unit with suction lance for canisters.

  • Volume-dependent control
  • Dosing volume 100 ml/m³
  • Mounting on pipe or wall
  • Display for operation, dosing and empty signal
  • With suction lance
  • Nominal pressure PN 10 bar
  • DVGW-certified

Installation requirements

Please note local installation directives, general guidelines and technical specifications. A fine filter (e.g. BOXER®) must be installed upstream of the systems to protect against foreign matter. The installation site must be frost-proof and the system protected against chemicals, dyes, solvents and vapours. Furthermore, the ambient temperature and the radiation temperature close to the system must not exceed 40°C. For the electrical connection a separate socket (230 V / 50 Hz) within approx. 1.2 m from the system is required.

Scope of supply

Complete dosing computer, consisting of:

  • Contact water meter with water meter screw connections, pulse transmitter, pulse cable and dosing point with non-return valve
  • Control/pump unit with mounting material for mounting on contact water meter or wall; 1.5 m dosing line; cord transformer with 1.5 m feed line
  • Suction lance with level monitoring
  • Mineral solution container not included in scope of supply


  • Switch box for voltage-free signal (empty signal and fault) to a central control room; including connecting cable with plug to dosing computer
  • Complete M-Bus measuring transducer D-DAM to transmit the flow rate and the meter reading as well as statistical values of a water meter by means of M-Bus (IEC 870); in addition, pulse output in proportion to flow, analogue output and relay contact to Grünbeck control unit

For further information on installation requirements, scope of supply and accessories, as well as technical details, see the product data sheet, which is available to download.