Kamstrup MULTICAL 602 Technical Description

MULTICAL®602
KamstrupA/S∙TechnicalDescription∙5512‐931_N1_GB
_
11.2016
31
6 Calculator functions
6.1 Energy calculation
MULTICAL

602 calculates energy based on the formula in EN 1434-1:2007 in which the international temperature
scale from 1990 (ITS-90) and the pressure definition of 16 bar is used.
The energy calculation can in a simplified way be expressed as: Energy = V

 k.
The calculator always calculates energy in Wh, and then it is converted into the selected measuring unit.
E Wh =
V  k
1000
E kWh = E

Wh / 1,000
E MWh = E

Wh / 1,000,000
E GJ = E

Wh / 277,780
E Gcal = E

Wh / 1,163,100
V is the supplied (or simulated) water volume in m
3
. E.g. if a CCC code = 119 is used, the calculator will be
programmed to receive 100 pulses/liter. E.g. if 10,000 pulses are added this corresponds to 10,000/100 =
100 liters or 0.1 m
3
.
 is the temperature difference measured, e.g.  = inlet temperature – outlet temperature. Please note,
that various temperatures are used to calculate  as MULTICAL

602 calculates various different energy
types. Both in the display and during data reading each energy type is uniquely defined, e.g.:
Heat energy: E1 = V1(T1-T2)k Cooling energy: E3 = V1 (T2-T1)k
k is the thermal coefficient of water which is calculated on the basis of formula in EN 1434-1:2007 (identical
with the energy formula in OIML R75-1:2002). For control calculations Kamstrup can supply an energy
calculator :





Kamstrup MULTICAL 602 Specifications

General

Flow Sensor	Ultrasonic
Display	LCD
Battery Life	Up to 16 years
Communication	M-Bus, Wireless M-Bus
Approval	MID class 2, EN 1434
Accuracy	Class 2
Pressure Rating	PN16
Application	Heating and cooling systems
Temperature Range	0°C to 180°C