flowIQ
®
3100 TECHNICAL DESCRIPTION
5
Kamstrup A/S • Technical Description • 5512
-
1242_B1_GB • 05.2015
1
General description
flowIQ® 3100
covers a series of integrated, hermetically sealed water meters, intended for consumption
and distribution measurement of cold domestic water – a
static cold water meter based on the ultrasonic
principle. The cold water meter has been developed on the basis of Kamstrup's experience since 1991 with
the development and production of static ultrasonic meters.
flowIQ® 3100 has been subjected to a very comprehensive OIML R49 type test in order to ensure a long
-
term stable, accurate and reliable meter. One of the water meter’s many advantages is the fact that it has
no wearing parts, which entails longevity.
flowIQ® 3100
is constructed as a vacuum chambe
r of moulded composite material, mounted on a
measuring tube made of brass or stainless steel. Thus, the electronics are fully protected against
penetration of water, from both measuring tube and surroundings. The meter can without problems be
placed in minor pumping stations, and is also suitable for mounting in distribution wells and meter wells,
which are frequently filled with water.
flowIQ® 3100 is also intended for measurements in blocks of flats and commercial premises. The meter fits
perfectly into
a network of MULTICAL® 21 household meters.
The water meter can and must only be opened by Kamstrup A/S. If the meter has been opened and the
sealing has thus been broken, the meter is no longer valid for billing purposes. Furthermore, the factory
guarant
ee no longer applies.
flowIQ® 3100 measures the water consumption electronically, as a volume, using the ultrasound signal.
Through two ultrasonic transducers
,
an audio signal is sent with and against the flow direction. A
transducer serves both as a 'speaker' when transmitting, and as a 'microphone' when a signal is received.
The ultrasonic signal traveling with
the flow will be the first to reach the opposite transducer, while the
signal running against
the flow will be received a little later. The time difference, between the two signals,
can be converted into flow velocity, and thereby also into a volume. The
measuring principle is called
'
bidirectional ultrasound technique based on the transit time method
', which is a proven, long
-term stable
and accurate measuring principle
.
The accumulated water consumption is displayed by
flowIQ® 3100 in cubic metres (m
3
) w
ith five digits and
up to three decimals, i.e. the resolution has been extended to 1 liter only. The display has been specially
designed to operate in a wide temperature range, with high contrast, regardless of lighting
-
and therefore
easy to read - and s
till have long lifetime.
In addition to volume reading, a graphic indication of current flow and a number of information codes are
displayed.
All registers are saved daily in the meter data logger (EEPROM) and are kept for 460 days. Furthermore,
monthly data for the latest 36 months are saved.
The water meter is powered by an internal lithium battery with up to 16 years' lifetime.
flowIQ® 3100
comes with integral data communication for
Wireless M-Bus – European standard for remote
reading of meters EN
13757
-4
. You can choose between
the following
settings:
868
MHz, Mode C1 or Mode T1 - OMS for
the European market.
The meter is fitted with an optical eye which makes it possible to read saved consumption data and
info
codes, stored in the meter’s data logger. Using an optical reading head, with USB connection, the
optical eye, in addition, allows to configure the meter.
