Kamstrup Heat Meter - Multical 402


Kamstrup Heat Meters

Kamstrup Multical 402

RHI MID Class 2 Heat Meters


Kamstrup Heat Meter - Multical 402 RHI Approved MID Class 2 

Kamstrup’s Multical 402 is a compact heat meter which measures the exact energy consumption with a high level of accuracy. The unit is maintenance-free and has a long lifetime with minimal yearly operating costs.

The Kamstrup Multical 402 heat meter can be used for heat, cooling and combined heat/cooling measurement in all water-based systems with temperatures from 2 to 160°C. It consists of a heat calculator, a flow meter and two temperature sensors. It is simple to install, read and verify.

Kamstrup Multical 402 Heat Meter

The Kamstrup Multical 402 heat meter has been developed for measurement of energy consumption in family and multiple occupancy housing, housing associations, blocks of flats and small industry.

The flow meter range for the Multical 402 energy meter comprises of the sizes 0.6 – 15 m³/h, and the supply options are 230 or 24 VAC mains module, 2xAA-cell battery, or D-cell battery with up to 16 years’ lifetime.



Kamstrup Multical 402 Heat Meter

The Kamstrup Multical 402 heat meter  is fitted with a connector for the supply and is easy to change battery or mains supply.

Kamstrup’s Multical 402 receives pulses from up to two connected hot or cold water meters and carries out remote accumulation of energy and volume via pulse outputs.

If you change from pulse input to pulse output, the heat meter is automatically configured for pulse inputs and pulse outputs respectively – without manual reconfiguration.

Kamstrup Heat Meter - Multical 402 Technical Specification
Energy Units MWh, KWh, GJ, Gcal
Data Logger (Eeprom) 460 days, 36 months, 15 years, 50 info codes
Data Communication KMP protocol with CRC16 used for optical communication and for base modules
Mains Supply 230 VAC +15/-30%, 50/60 Hz
24 VAC ±50%, 50/60 Hz
Environment Class Meets EN 1434 class A (MID class E1)
Ambient Temperature 5 - 55°C, non condensing, closed location (indoor installation)
Protection Class

Heat Calculator - IP54

Flow Meter - IP65

Media Temperature

Heat meters - 402-V/W: 15…130°C
Cooling meters - 402-T: 2…50°C
Heat/Cooling meters - 402-T: 2…130°C
Media in flow sensor - Water


Note - At medium temperatures over 90°C

in the flow sensor, we recommend
using flange meters and mounting the
heat calculator on the wall.
Storage Temperature -20ºC - 60ºC (drained flow meter)
Pressure Step

PN16 with thread

PN25 with flanges

Weight From 1.8 to 12 kg depending on the size of the flowpart
Flow Sensor Cable 1.5m (the cable cannot be removed)
Connection Cables 3.5 - 6mm diameter
Supply Cable 5 - 10mm diameter

Kamstrup’s range of heat meters are approved to EN 1434 and MID class 2 these products guarantee conformance to installation, operating monitoring and maintenance under the RHI scheme.

Kamstrup Multical 402 Heat Meter

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Kamstrup Heat Meter - Multical 402

Heat Tracing - Thorne & Derrick