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MULTICAL® 801
40
Kamstrup A/S · Technical Description · 5512-571_R1_GB_11_2016
6.4
Combined heat/cooling metering
MULTICAL
®
801 is available as heat meter (meter type 2xx), cooling meter (meter type 5xx) or combined
heat/cooling meter (meter type 6xx).
Meter type
Heat meter, closed systems (MID)
2
Heat meter, closed systems
4
Cooling meter
5
Heat/cooling meter
6
Volume meter, hot water
7
Volume meter, cooling water
8
Energy meter, open systems
9
Delivery code (language on label etc.)
XX
If MULTICAL
®
8
01 has been supplied as a combined heat/cooling meter, heat energy (E1) is measured at
positive temperature difference (T1
>
T2) whereas cooling energy (E3) is measured at negative
temperature difference (T2
>
T1). Temperature sensor T1 (with a red type sign) must be installed in the
hydraulic inlet pipe whereas T2 is installed in the outlet pipe.
The temperature point “T1 limit” is used as a ”filter” for cooling measurement in the way that cooling is
only measured when the current inlet temperature T1 is below T1 limit.
T1 limit is configurable in the temperature range 0.01…180.00
°
C. T1
limit
is configured via METERTOOL.
In combined heat/cooling meters T1 limit ought to correspond to the highest occurring inlet temperature
in connection with cooling, e.g. 25
°
C. If the meter is to be used for ”purchase and sale of heat”, T1 limit
is adjusted to 180.00
°
C, which cancels the T1 limit function.
The change between heat and cooling measurement involves no hysteresis (
∆
T1 limit = 0.00K).