Kamstrup flowIQ 3100 - Installation Requirements

flowIQ
®
3100 TECHNICAL DESCRIPTION
19
Kamstrup A/S • Technical Description • 5512-1242_B1_GB • 05.2015
In order to avoid formation of air bubbles or vapor dents in the meter (cavitation) – and to ensure correct
measurement under all circumstances – the operating pressure in the pipe installation must observe the test
conditions of OIML R49, which means that the static pressure downstream, immediately before the meter,
must always be minimum 0.03 MPa (0.3 bar).
8 Reading and data
8.1 Reading
flowIQ® 3100 can be read in three different ways:
• Visual reading of the legal display
• Receiving the Wireless M-bus signal, which is emitted at intervals of 16 or 96 seconds, depending on
the meter configuration
• Reading via the optical eye, e.g. by means of Kamstrup wireless optical reading head, or optical
reading head with USB connector.
8.2 Volume measurement
The meter calculates water flow currently according to a fixed measuring cycle.
When the meter is in normal mode a measurement is carried out every four seconds, and after a total of
32 seconds the meter count is updated in the display.
Every 24 hours the meter count is saved in the daily register. The register includes data for the latest 460
days.
The daily register can be read via the optical eye.
The Wireless M-Bus signal always includes current meter count.
8.3 Data function: Target volume
flowIQ® 3100 saves the meter count on the first day of the month in the target volume register. Data is
stored in the monthly register. The register includes data for the latest 36 months.
The Wireless M-Bus signal includes target volume of current month if selected during customer specific
configuration. The customer can select whether the Wireless M-Bus signal is to include target volume of
current month or max. flow of latest month (see paragraph 8.4), plus a number of combinations of water
*)
and ambient temperature. (see 'Optional register in data logger’).
Reading the target volume is suitable for use by the waterworks settlement with the consumer.
The complete register of target volumes for the latest 36 months can be read by means of the optical eye.
*)
Measuring the water temperature is only valid for meter sizes 1.6 and 2.5m
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