MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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14.2.2
Use of high-resolution pulses
High-resolution energy and volume pulses can be connected to the test stand used for calibration of the meter, or to
Kamstrup's Pulse Tester, type 66-99-279, as shown in the drawing below.
14.2.3
Auto-integration
The purpose of auto-integration is to test the calculator’s accuracy. During auto-integration the water flow through the
meter must be cut off to make it possible to read the volume and energy counted during auto-integration without the
meter continuing normal counting in the registers afterwards.
At the beginning of an auto-integration the meter receives a serial data command with test volume and number of
integrations over which the meter is to distribute the volume.
In MULTICAL
®
302 the high-resolution test registers cannot be separately reset, so the test must be based on the
increase in the high-resolution registers during test.
After auto-integration all volume and energy registers – incl. the high-resolution test registers – have been enumerated
by the given volume and the calculated energies. Furthermore, the average of the temperatures measured during auto-
integration has been saved in two registers, ”T1 average inlet temperature” and ”T2 average outlet temperature”.
For calculation of accuracy and precision the below-mentioned registers can be read after auto-integration:
Verification registers
RID
Heat energy
E1HighRes
266
Cooling energy
E3HighRes
267
Volume
V1HighRes
239
T1 average inlet temperature
T1average_AutoInt
229
T2 average outlet temperature
T2average_AutoInt
230