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Installation Manual
1. Supplied Material
Each package contains:
• 1 iPERL device in resp. frequency: 433 MHz / 10 mW or
868 MHz / 25 mW
• manual
• optional connection kits
• NRV with gasket (if ordered)
2. General Instructions
Please read this guide prior to installing iPERL.
iPERL is a metering endpoint designed for use with potable
water supplies to residential, commercial and industrial
activities.
iPERL is intended for maintenance-free operation for up to
15 years. IPERL is hermetically sealed and therefore there
is no servicing of the meter required. The water meter is
designed for use with potable water for residential activities.
The meters must be stored in a dry, cool place, free of
contamination. Please make sure that during installation all
hygienic standards and recommendations are respected.
3. Area subject to explosion hazards (ATEX, special
variant)
"X" Protection against electrostatic damage
Risk of explosion due to sparking because of electrostatic
charge of plastic parts. If cleaning (e.g. display) is necessary a
damp cloth can be used. Never use a dry cloth!
The ATEX markings (
II 3G Ex ic IIC T6 Gc) and the number
of the certificate of conformity (TÜV-A-TAD19ATEX2802) are
printed on the housing.
Explanations: Device group II: Usage outside of mines
Device group 3G with protection level Gc for the usage
in zone 2 (rare occurrence of combustible gases, mists
and vapors), explosion group IIC for all gases and T6 (all
temperature classes).
4. Permissible Operating Conditions
• min. water pressure: 0.3 bar
• min. water conductivity required: 120µS/cm (25 °C)
• Cold and warm water meter: from 0.1 °C up to 50 °C
(70 °C, special variant)
• Pressure stage: MAP16bar
• Mechanical environment: M2 (MID)
fixed installation with minimum vibration
• Electromagnetic environmental class: E1 and E2 (MID)
residential and commercial
• Protection class: IPx8
• Climatic environment: -10 °C ≤ Ta ≤ +70 °C provided that
a minimum water flow rate of 100 litre / hour is ensured to
prevent freezing
5. Installation Requirements
For preparation of the site and the installation of the meter
the directions in ISO-4064, part 5, need to be mandatory
observed.
Ensure that the pipework does not introduce mechanical
stresses on the meter
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body: checking both alignment of the pipework with the
threaded connections
and distance between unions with the meter lay length. If there
is mechanical stress usage of the brackets is recommended.
When mounting iPERL onto a network, ensure contact
surfaces are even and clean and use new gaskets.
Torque: tighten iPERL to a minimum torque setting of 20 Nm
and a maximum of 30 Nm. For flanged versions the correct
torque is 35 - 40 Nm.
Meters must be installed grounded and tension free, without
any mechanical stress on water pipes, for instance installing
meters using a metal meter bracket with length compensation
fittings. In cases where the installation site is not prepared
with these brackets, we recommend the permanent use of
a bridge to avoid the negative impact of stray currents (see
also section 6.4 of ISO-4064, part 5) that can be ordered as
optional part from Sensus.
The meter does not need any straight upstream or
downstream pipe (U0D0).
1 Installation position: iPERL has been designed to operate,
with no impact on metrological performance, in all installation
angles and orientations.
Note: When flow direction arrow is pre-set, it needs to be
respected.
2 Please avoid installing iPERL as shown below as a reduction
of battery lifetime could occur.
3 When installing an iPERL please avoid unfavourable
situations like inverted u-shapes with air continuously trapped
at the position of the meter or pipes which are permanently
only half filled: for a reliable measurement the sensors of
iPERL have to be in direct contact with water.
Keep the valves closed when the premises are vacant. Make
sure you close both valves before and after the meter for
safety reasons when installation is not finished yet or there is
no water consumption for a longer period, e.g due to vacant
premises.
iPERL is free of any constraint for upstream or downstream
straight pipe lengths.
Flow
direction:
iPERL's
metrological
performance
independent of flow direction and orientation of the meter
can be selected to best suit the installation conditions. iPERL
will detect flow direction when installed and set the direction
indicator accordingly.
Pressure: please ensure that iPERL strictly operates within the
pressure rating printed on the meter body.
All iPERL settings and functions will be automatically and
correctly activated once the flowtube is saturated.
6. Installation Procedure (Volume registration & Flow
direction)
STEP1:
1A: Remove iPERL from its packaging and locate any optional
component (filter, non-return-valve
1)
(NRV), ...)
In case you need a non-return-valve please consider:
4 iPERL, DN 15, 110 and 115 mm: NRV installation in meter
screw connection of meter outlet (no gasket required)
5 All other nominal sizes and lengths: NRV installation in the
outlet of the measuring tube using the gasket provided in
the delivery.
If you do not use a NRV you can choose any other gasket.
iPERL will display the following symbols:
6 No Volume, no flow
2)
and the alarm flag (raised for empty
pipe)
1B: Install iPERL according to the most suitable LCD
orientation
STEP2:
7 Once installed, open the upstream valve to fill the meter.
The alarm flag disappears after a short while, this indicates
that the meter has detected water in the pipe.
iPERL is now fully operational, although in stand-by mode.
At this point, also the radio transmission is activated which is
indicated by a flashing radio symbol. The meter starts to send
out radio telegrams.
STEP3:
8A To activate the "flow direction arrow", ensure a flow
above the threshold of
3
l/h for DN 15
5
l/h for DN 20
8
l/h for DN 25
12.5 l/h for DN 32
20
l/h for DN 40
Both arrows blink to indicate the meter is detecting its forward
flow direction. After reaching the threshold the arrow is set.
It starts to accumulate volume into the three registers
forward, reverse and billing volume. The flowrate will start to
be displayed after the first 4 hours of operation.
When the billing volume register reaches the threshold of
25 l for DN 15
40 l for DN 20
is
63 l for DN 25 - 40
the meter takes that register with the higher volume
accumulated as the forward register and fixes the flow
direction.
From this moment on the flow direction cannot be changed;
any flow in the 'wrong' direction will now trigger the alarm
flag for 'reverse flow' and will be counted as reverse volume.
8B When flow direction arrow is pre-set, it will appear
immediately on the LCD. For the first 4 hours of initial
operation the flow rate indication is in setup process and the
displayed value is only informative. The actual flow rate will
be displayed after 4 hours of operation.The volume counting
operation is not affected as this is independent from the flow
iPERL®
information shown on the display.
9 After the flow direction has been set, data logging starts.
The respective data fields for flow and alarms related to flow
(like e.g. leakage, broken pipe) become active 4 hours after
the start of the data logger.
10 IMPORTANT! iPERL does not register the volume if the
averaged flowrate is below:
1
l/h for DN 15
1.6 l/h for DN 20
2.5 l/h for DN 25
4
l/h for DN 32
6.4 l/h for DN 40
7. iPERL Display and Characters
11 After installation is successfully completed the display
shows:
• Meter reading and preselected unit
• Current flowrate and preselected unit
• Flow direction
• RF active
12 After the LCD self-test the firmware version will be shown
followed by the alarms:
AL-05 Empty pipe
AL-06 Magnetic tampering
AL-07 Reverse Flow
AL-08 Broken pipe / Leakage
If any of the following graphics is displayed, please contact
your supplier:
• Alarm flag + AL-xx (except 05-08, see above)
• Low battery warning
• Test mode
Note: The red lines printed on the display (last 3 digits after
the comma) show the liters and shall help read the display
more easily.
8. Disposal
13 This product contains a lithium metal battery. In the
interest of protecting the environment, this battery may not
be disposed in household waste after its period of use. The
local and national regulations for environmental protection
are to be considered. The expected lifetime of the battery
is shown on the battery pictogram lasered on the iPERL, e.g.
1241 = Month 12 (December), Year 41 (2041). The meter
should be removed or replaced until this date as the battery
is encapsulated and cannot be removed separately.
1) Australia only: NRV is already pre-installed!
2) "no flow" signal
on display not available in Chile
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