Manual Integrator Supercal 531 06-06-2011 17
3.6.3 Cooling energy – combined cold-/heat meter
The combined cold-/heat meter (tariff function cooling/heat tariff) calculates the cooling energy as
soon as the two following conditions are fulfilled at the same time:
temperature difference (∆t) < - 0.2 K
„temperature high“ < 18 °C
The threshold value of 18 °C for the switch-over of the combined cold-/heat meter is parameterised
ex works. It is possible to alter this value with the software Prog531 over the optical interface.
If the integrator is used as combined heat and cold meter, the cooling capacity and the tempera-
ture difference are displayed with a minus sign (-) and the relevant data are assigned to tariff 1.
An officially attested calibration of the cold meter can only be carried out, if the cooling energy
measured is within the admissible temperature range with the medium water (without glycol).
3.6.4 Insulation instruction for cooling systems
In cooling systems, the mechanical flow sensors and temperature sensors may only be insulated to
the connection.
3.7 Calibration- and measuring-relevant data
If integrators are used for the direct billing of energy from the energy supplier to the consumer
(public monetary transfers), they are subject to the calibration obligation in most European coun-
tries.
The purpose of the obligatory calibration is to protect the consumer as well as the supplier of en-
ergy against fraud and malevolent manipulations.
Only type-approved measuring devices can be calibrated. Thus the use of inappropriate systems is
avoided.
The period of validity of the calibration is governed by national law. In most European countries it is
5 years.
Especially the following parameters are submitted to the obligatory calibration:
Pulse factor/frequency and place of installation of the flow sensor
Accumulated energy and volume with respective units
Displays and units of performance, flow and temperature
They are defined by the measuring points planned during the parameterisation at the factory or
when the parameterisation is carried out by an authorized laboratory. Thereafter, they are sealed
and thus protected against unauthorized manipulation.
If these calibration-relevant seals are damaged or removed, all warranty claims / service warranty
claims as well as the calibration of the integrator are void.
To Next Page
Loading...
