MULTICAL® 403 Contents Description 2 Mechanical design 3 Mechanical data 4 Approved meter data 5 Accuracy 6 Pressure loss 7 Dimensioned sketches 8 Electrical data 10 Product variants 12 Meter configuration 14 Information codes in display 15 Accessories 16 Description MULTICAL® 403 is a static heat meter, cooling meter or combined heat/cooling meter based on the ultrasonic principle. The meter is intended for energy measurement in almost all types of thermal installations where water is used as the energy-conveying medium. MULTICAL® 403 consists of a calculator, a flow sensor and two temperature sensors. MULTICAL® 403 has been developed for measurement of energy consumption in flats, single-family and multi-family houses, housing associa- tions, blocks of flats and small industry. The meter is simple to install, and it has a temperature range of 2 .180 °C and a meter programme with nominal flow from q p 0.6 m³/h to 15 m³/h. Due to its robust design and high quality, MULTICAL® 403 is practically maintenance-free, and its simple setup makes it easy to configure via the meter's front keys. MULTICAL® 403 has been optimised compared to earlier generations. The total dynamic range has been increased to 1600:1 from saturation to start-up and the meter has an approved dynamic range of 250:1. It is thereby secured that every conceivable consumption is measured with the same well-known Kamstrup precision. The meter can be powered by mains or battery supply as required. You can choose between a small battery without transport restrictions or a more powerful battery with 16 years’ lifetime. No matter which solution you choose, the power consumption of MULTICAL® 403 is low. Volume is measured using bidirectional ultrasonic tech- nique based on the transit time method, a proven long-term stable and accurate measuring principle. Accumulated heat energy and/or cooling energy can be dis- played in kWh, MWh or GJ, all in the form of seven or eight significant digits. The display has been specially designed with a view to obtaining longevity. A wide range of parameters are configurable via the front keys of MULTICAL® 403: Flow sensor position in inlet or out- let, energy unit, primary M-Bus address, radio on/off, target dates, etc. Configuration can be carried out on site, thus contributing to a reduction of stocks and installation time. MULTICAL® 403 is available with communication modules for Wireless M-Bus, M-Bus and RS232. The modules are available with either pulse inputs or pulse outputs. In ad- dition to reading current values, the programmable data loggers of MULTICAL® 403 can be read via M-Bus. 2 Kamstrup A/S • FILE100000106_A_EN-58101436_N1_02.2023
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