MULTICAL® 21 & flowIQ® 2101 /..02 /..03
TECHNICAL DESCRIPTION
Kamstrup A/S •Technical Description • 5512-897_J1_GB • 06.2016
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10.4
Data function: Maximum flow and minimum flow
The water meter registers maximum and minimum flow on a daily as well as monthly basis. Maximum and
minimum flows are calculated as the largest and the smallest value, respectively, of a number of current
flow measurements. The average period used for all calculations can be selected in the interval 1...120
minutes in leaps of one minute. The choice must be made when submitting the order.
If no choice is made, the average period will by default be 2 minutes.
The Wireless M-Bus signal includes max flow of latest full month if selected during the customer specific
configuration. (see paragraph
‘Optional register in data logger’
)
Values of maximum and minimum flow are saved in both daily and monthly registers. Daily registers of the
latest 460 days and monthly registers of the latest 36 months are always readable via the optical eye.
The development of maximum flow can indicate an error in the water installation. If e.g. max flow falls over
a longer period, this can be a sign of a blocking in the installation or a leakage in the supply pipe, before the
meter.
Maximum flow rate can also be used for an assessment of whether or not the correct size meter
has been installed.
10.5
Data function: Measuring meter and water temperatures
10.5.1
Temperature monitoring
The water meter measures water and ambient/meter temperatures, respectively. The measurements can
be used to monitor the installation and to give an indication of the quality of water. Both temperatures are
stored in the meter's daily and monthly records.
For each day, temperature values, minimum, maximum and average are stored in the 24 hours’ register.
The register contains the last 460 days.
Each first day of the month, temperature values, minimum, maximum and average, for the latest month,
are stored in monthly register.
The register contains the last 36 months. Temperature values are referred in °C and can be read using the
optical eye. These are sent via the Wireless M-Bus radio signal. The temperature values, can be combined,
as described in section
‘Optional register in data logger’
.
See more about temperature reading accuracy in the section
‘Temperature measurements - water and ambient/meter’
.