Heat meter
94
Calibration mode
By simultaneously measuring the same temperature with both sensors, the deviation of the sensors
from each other can be calculated and included as a correction factor when calculating the heat
amount in the future.
The calibration only has an influence on the sensor values in the function "Heat meter" and is not
considered in other functions.
During calibration, it is important that both temperatures (flow and return) measure the same tempera-
tures. Here, both of the sensor tips are tied together using tape or a wire. In addition, the two sensors
should already be equipped with the line expansions. When using the collector sensor, the required
line length has to be estimated approximately and integrated.
The sensors must be connected to both
parameterized inputs of the flow and return lines and are
both
submerged in a hot water bath (i.e.
both measure the same temperature).
Overall submenu view - SERVICE MENU:
RESET
METER:
no
Reset the heat meter
HEAT AMOUNT:
123.4 kWh
Total heat amount in kWh
CALIBRATION
START: no
Start command for calibration
Status: UNCALIBRATED
The heat meter has not been calibrated
DIFFEREN. 0.56 K
Display of the difference measured during the calibration pro-
cess
Calibration process:
1. Submerge the sensors in the water bath.
2. Start the calibration process by selecting "START
yes
"
3. After successful calibration, the status "CALIBRATED" appears. The measured difference val-
ue is displayed.
If the calibration was carried out incorrectly or erroneously, the result can only be corrected by carry-
ing out a new calibration.
Entire menu view:
DES: HQC.1
INPUT VARIABLE:
SERVICE MENU:
Status: CALIBRATED
FROST PROT: 45 %
Indication of frost protection share in %
T.flow: 62.4 °C
The flow temperature is 62.4°C
T.rtn:
53.1 °C
The return temperature is 53.1°C
DIFF:
9.3 K
The difference between the flow and the return is 9.3°K
FLOW RT: 372 l/h
The current flow rate is 372 l/h
OUTPUT: 3.82 kW
The current output is 3.82 kW
HEAT AMOUNT:
19 834.6 kWh
The current heat amount is 19,834.6 kWh
