Kamstrup MULTICAL 403 - Cold Water Leakage >N; Pulse Outputs C and D >PP

MULTICAL® 403
Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
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3.2.8 Cold water leakage >N<
Pulse inputs A and B of MULTICAL® 403 can be used for cold water leakage monitoring. Basically, however, cold
water leakage monitoring is only active on input A, unless otherwise agreed with the customer. When MULTICAL®
403 is used for leak monitoring; the sensitivity is determined by the configuration of the N-code.
Leakage monitoring is measured over a period of 24 hours. The N-code defines the resolution, by which the 24 hours
are divided; 48 intervals of half an hour, 24 intervals of one hour or 12 intervals of two hours. If the meter registers
minimum one pulse during each of these intervals over the full period, info code 8, which indicates leakage, is
activated. The info code is not activated until after the 24-hour period, however it is reset again as soon as the meter
registers an interval without pulses.
The table below shows the three available N-codes. Upon receipt of order the N-code is configured at 2 by default
(unless otherwise informed by the customer).
Cold water leak detection (input A)
N-code
No active leak search
0
30 min. without pulses
1
One hour without pulses
2
Two hours without pulses
3
3.2.9 Pulse outputs C and D >PP<
MULTICAL® 403 has 2 pulse outputs (C and D) which are placed on the communication modules (see paragraph 11
for further details on modules). The pulse outputs provide output from selected counter registers, which are
determined by the selected meter type. As the meter has two pulse outputs, it is possible to provide output from
two of the following counter registers via pulse outputs C and D respectively:
• E1 (Heat energy)
• E3 (Cooling energy)
• V1 (Volume)
Note: As selected counter registers are configured by meter type, configuration cannot be changed after delivery.
Pulse outputs are by default configured with the following registers:
Meter type
Out-C
Out-D
Meter type
(See paragraph 3.1)
Heat meter E1 (CE+) V1 (CV) 1, 2, 4
Heat/cooling meter E1 (CE+) E3 (CE-) 3, 6
Cooling meter E3 (CE-) V1 (CV) 5
Volume meter V1 (CV) V1 (CV) 7, 8
The resolutions of pulse outputs always follow the least significant digit in the display, which is determined by the
CCC-code (see paragraph 3.2.3) e.g. at CCC=419: 1 pulse/kWh and 1 pulse/0,01 m
3
.