MULTICAL® 403 is a complete all round heat meter with ultrasound. The meter is also available as a cooling meter. The calculator and flow part cannot be separated, but the communication, supply and temperature sensors can be replaced. By using M-Bus, the meter obtains a battery lifetime of up to 16 years with meter readings via the module every 10 seconds. The compact meter imposes minimal installation requirements and provides maximum functionality at a competitive price. The robust design and high quality means that the meter is practically maintenance-free, and the simple setup makes it easy to make configurations directly via the meter's front keys.


Typical usage

Area of Use: Residential, small business

Measuring Principal: Ultrasonic

Metering Type: Heat, cooling, heat/cooling

Type: Complete meter - inseparable (temperature sensors - separable)

Heat (MID) and cooling (TS) approvals: Yes


Key specifications

Flow sensor cable: 1.5 m

Temperature sensor cables: 2-wire: ≤ 10 m

Nominal flow: 0.6 - 15 m3/h

Sizes: DN15 - DN50

Protection class: Calculator - IP65

                     Flow sensor - IP68

Pressure loss at nominal flow: Typically < 0.1 bar

Battery life: Up to 16 years

Supply: Battery, 24 VAC/VDC, 230 VAC


Module slots: 1 slot

Communication: M-Bus, BACnet, Modbus and analogue output

Data logger: Programmable logging intervals from 1 minute to 1 year

Backlit display: No



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