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MULTICAL® 603 – Commercial (DN15-DN300)

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MULTICAL® 603 – Commercial (DN15-DN300)

Smart Meter for Heating and Cooling

With the MULTICAL® 603 Smart Meter for Heating and Cooling, everything from the inlet/outlet position to the energy unit, cut-off dates and much more can be individually configured via the meter’s front panel directly at the installation site.
The smart and compact design means that the meter can easily fit all types of installations while still maintaining an optimal display, even in small and narrow environments.

This is the ideal smart meter for Heating and Cooling applications with selection ranges from 0.6 to 15 m³/h, and can therefore be used in various applications ranging from apartments to shopping centers and large office buildings.

The meter can be used to help its users to gain complete control over a buildings energy consumption, capturing data on the thermal energy consumed by tenants, departments or building divisions. Information can be relayed via a number of available communication protocols including Modbus and BACNET.

The rugged design and high quality of the MULTICAL® 603 means that it is easy to use, simple to install and virtually maintenance free. Reconfiguration or service is easily completed due to the simple set-up. Therefore, the time and cost spent on installations and maintenance are lower than ever before.

Contact our team today for more information on this smart meter for Heating and Cooling applications and to find out if it is the best solution for your application.

Typical Usage

  • Area of Use: Residential, small business, industrial
  • Measuring Principal: Ultrasonic
  • Metering Type: Heat, cooling, heat/cooling
  • Type: Combined meter – separable subassemblies
  • Heat (MID) and cooling (TS) approvals: Yes


  • Configurable M-Bus modules with logger reading
  • Highly flexible modular design
  • Compact meter is easy to install and doesn’t require straight inlet or outlet
  • Onsite configuration via keys on display
  • Pulse inputs and outputs
  • 16 years battery life
  • IP68 Flow Sensor
  • Realtime clock backup

Key Specifications

  • Flow sensor cable: ULTRAFLOW®: ≤ 10 m Cable, Extender Box: ≤ 30 m, Pulse Transmitter: ≤ 100 m
  • Temperature sensor cables: 2-wire: ≤ 10 m, 4-wire: ≤ 100 m
  • Nominal flow: 0.6 – 1000 m3/h
  • Sizes: DN15 – DN300
  • Protection class: Calculator – IP65, ULTRAFLOW® IP65/IP67
  • Nominal Flow Multical: 0.6 – 15000 m3/h
  • Pressure loss at nominal flow: Typically < 0.1 bar
  • Battery life: Up to 16 years
  • Supply: Battery, 24 VAC/VDC, 230 VAC


  • Module slots: 2 slots + integrated M-Bus
  • Communication: M-Bus, BACnet, Modbus, LonWorks, analogue output and analogue input In-Built M-Bus
  • Data logger: Programmable logging intervals from 1 minute to 1 year
  • Backlit display: Yes (option)