Xylem sensus DomoJet R User manual

DomoJet R
USER GUIDE
MA 1030 INT - 0002 - 10.2022

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Contents
1 DomoJet R Introduction............................................................................................................... 3
Radio data decryption .................................................................................................................................................................................3
Safety warnings .............................................................................................................................................................................................3
Restrictions.....................................................................................................................................................................................................4
Construction ..................................................................................................................................................................................................5
Battery .............................................................................................................................................................................................................6
Display.............................................................................................................................................................................................................7
Technical specifications...............................................................................................................................................................................8
2 Install the DomoJet R ................................................................................................................. 10
Seals...............................................................................................................................................................................................................11
Use .................................................................................................................................................................................................................12
Program the radio.......................................................................................................................................................................................12
Error codes...................................................................................................................................................................................................12
Test mode .....................................................................................................................................................................................................12
Care and maintenance ..............................................................................................................................................................................12
Disposal ........................................................................................................................................................................................................13
Appendix A: EU Declaration of Conformity................................................................................. 14

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1 DomoJet R Introduction
DomoJet® R is a single-jet meter with mechanical movement and fully electronic timing devices designed for
measuring hot and cold water in residential applications.
DomoJet R measures the flow of water using a turbine and a magnetic drive (protected). DomoJet R is equipped with
an electronic metering unit with a display showing the volume, flow rate and any active alarms.
DomoJet R is equipped with an integrated radio which uses Wireless M-Bus technology allowing remote data
transmission. Data can be received using a special mobile reading kit or via concentrators and a fixed network.
The main technical features of DomoJet R are:
 Single jet electronic version.
 Available in both cold and hot water versions.
 Accuracy class up to R160.
 Electronic counting device for calculating consumption, fully rotatable (360°).
 LC display.
 Integrated wM-Bus radio operating in the 868 MHz band.
 Integrated lithium battery guaranteeing a minimum service life of 12 years.
Radio data decryption
The data that is transmitted by radio is encrypted to prevent unauthorized access. To decrypt the radio data, the
appropriate radio key (KEY) is required.
How to obtain the radio key:
There is a visible QR code on the bonnet of the meter. This code contains an Internet address and a token, which is a
process number with a server connection. This token is not the actual radio key, but is used to provide the radio key to
only authorized authenticated persons. The QR code can be scanned with any suitable device, such as a smartphone,
using a QR application. The internet link leads to the website with the token. The actual key is accessible through this
website after successful authentication. The radio key is only available to the authenticated user and is blocked against
access by third parties.
If the token cannot be assigned, or if the meter has already been registered elsewhere, a new activation can only
be achieved by a corresponding request to the Sensus Service Team ([e-mail]). To avoid this, it is
recommended to keep the bonnet surface clean to ensure further protection of the data and to enable secure radio
reading.
Note: The radio key and QR code are different for each meter.
Safety warnings
This manual is the property of Xylem. Reproduction or transfer of the contents of this document to third parties is
prohibited. All rights reserved. This document represents an integral part of the product; ensure that it is always
together with the product (even in the event of sale or transfer to another owner) to allow its consultation by the user or
authorized maintenance or repair personnel.
Carefully read this manual before using the device to ensure safe operation.
The device must be used as defined by Xylem, that holds no responsibility for damage to persons, animals or property
due to installation, adjustment or maintenance errors or improper use of the device.
After removing the packaging, ensure that the product is intact and complete. If the contents do not correspond to the
order, consult the distributor that sold the device.
The device must be installed and used in an area protected from freezing.

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The device must always be protected from extreme humidity and heat. Penetration of humidity and intense heat may
damage the battery and the device. The maximum allowed operating temperature is 55 °C.
If there are any doubts regarding conditions/functions of the device and related parts, please contact the local
distributor for further information.
After the device is in use, report any anomalies or faults encountered to the product supplier.
In case of complete destruction of the device with leakage of the electrolyte, avoid contact with the eyes and skin, do
not inhale fumes produced, and sufficiently ventilate the room.
This device is not for use by persons with reduced physical or mental capabilities, or those without appropriate
experience and knowledge, unless supervised by a person responsible for their safety and following adequate training
in how to use the product.
The product may only be used in accordance with the corresponding limits of use defined in “Meter technical
specifications.”
Restrictions
Do not perform the following actions:
 Modify and/or attempt to repair the product. All repairs must be performed exclusively by authorized personnel.
 Leave the device exposed to atmospheric agents.
 Place the device near to heat sources or expose it to direct sunlight.
 Position the device in proximity of sources of electromagnetic disturbance.
 Use the device in environments where the temperature drops below 0 °C.
 Open and/or replace the battery.
 Use solvents to clean the device.
 Incorrectly dispose of packaging material and leave it in children’s reach as it may represent a hazard. Disposal must be
performed in line with applicable laws.
 Dispose of the device as domestic waste.

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Construction
Structure
Dimensions
1. Register counter
2. Display
3. Meter housing
4. Colored water-temperature
indicator

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DN 15 DN 20
inches ½ ¾
Thread inches G ¾ B G 1 B
Lmm 80 / 110 / 115 115 / 130
Hmm 72
hmm 11.7 16.7
Bmm 65
Identification
The DomoJet R meter has its identification data stamped on it.
Battery
The meter is fitted with a 3.6 volt lithium battery that cannot be recharged but can be replaced. The typical lifespan of
the battery is 12 years, calculated using factory setup and the following operating conditions:
 between -10 °C and +0 °C for 10% of lifespan
 between 0 °C and +30 °C for 80% of lifespan
 between +31 °C and +55 °C for 10% of lifespan
Warning: Humidity and intense heat may damage the battery and reduce its lifespan.
The meter calculates the useful remaining life of the battery based on memorized parameters, for example, estimated
consumption of the electronic board in standby, consumption in transmission and the number of transmissions made.
Battery life depends largely on the frequency of data transmission set.
DANGER: If the battery is empty, it is necessary to contact the metering operator for the correct replacement
procedure. The battery must be disposed of in compliance with applicable laws on waste disposal in the country of
installation.
1. QR code for accessing radio key
2. LED
3. Meter serial number
4. Measurements
5. Wireless serial number
6. Battery expiration date
7. MID approval
8. Year of manufacture

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Display
The display is a passive LCD.
The display is set in fixed mode with the following automatic display cycle:
 For the initial 60 seconds, the Main view displays;
 For the following 12 seconds, the Periodic readings display;
 For the following 12 seconds, the Display Test and firmware version.
Display icons
IconsDescription
Test: Activated during test mode.
Error: Activated when an error is detected.
Transmission antenna: Signals radio transmission or radio enabled.
Calendar: Activated when billing dates display.
Battery: Activated when the calculated service life is coming to an end or when the voltage drops below the
minimum value (in which case the error icon also displays).
Leakage: Activated when the leakage alarm is triggered.
Back flow: Activated when the reverse flow alarm is triggered.
Star indicator: The indicator, consisting of 2 arc segments, follows the flow by rotating clockwise for direct
flow and anticlockwise for reverse flow.
Main view
The display cycle is automatically repeated 4 times, for a total of 60 seconds.
The Volume measured displays for 12 seconds and is expressed in m3. The value displays the decimal point for litres,
therefore 5 digits for m3and 3 digits for litres. The presence of a flow and its direction is displayed by the star indicator.
Range displays for 3 seconds and the value always displayed is expressed in m3/h to 3 decimal places. If no flow is
detected, the value displayed is 0. The presence of a flow and its direction is displayed by the star indicator.
Periodic readings
Following an automatic sequence, billing date references display:
 Billing date 1: displays the date for 3 seconds (for example, 12.05.21 indicates 12 May 2021);
 Billing value 1: displays the volume recorded on the billing date for 3 seconds;
 Billing date 2: displays the date for 3 seconds (for example, 02.09.21 indicates 2 September 2021);
 Billing value 2: displays the volume recorded on the billing date for 3 seconds.

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Billing date 1 is set by default, to 31/12 each year.
Billing date 2 is set by default to the end of each month.
Display test and firmware version
The display is presented as follows:
 All segments on the display are illuminated for 3 seconds.
 All segments on the display are turned off for 3 seconds.
 The installed firmware version is displayed for 3 seconds. The displayed format is MM.mmF, in which MM indicates the number
(2 digits) of the main version, mm indicates the number (2 digits) of the secondary version and F represents the firmware (e.g.
01.68F).
 The firmware CRC for 3 seconds. The format displayed, using all 8 digits of the display, is 32bit hexadecimal using both digits
and letters (09/AF).
 Any error codes for 3 seconds (e.g. Err XXXX, where XXXX is the hexadecimal code for the error). See table “Error codes”.
Technical specifications
Meter specifications
Description DN 15 DN 20 U.M.
Accuracy class 2
Maximum reading 99999.999 m3
Maximum working pressure 16 bar
Temperature classes T50: from +0.1 to +50 ° C
T30/90: from +30 to +90
Sensitivity class for installation conditions U0D0
Protection class IP68
Power supply Lithium battery 3.6 VDC (<1g capacity varies based on type) V
Useful battery life 12 years
Environmental class O
Electromagnetic class E2
Rated flow Q32.5 2.5 4.0 m3/h
Installation positions and R (Q3/Q1)HR80*, HR160* HR100* HR80*, HR160*
Other R63 Other R80 Other R63
Pressure drop 0.63 bar
Pressure range from 0.3 to 16 bar
Health certifications ACS, DM174, KTW, W270, NSF, WRAS
* = Display is facing upwards

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Pressure loss
Error curve
Electronic timing device specifications
Features Description
Environmental class O
Mechanical class M1
Electronic class E2
Temperature range for storage from -10 °C to +60 °C
Ambient temperature range from -25 °C to +55 °C
Pressure loss (bar)
Flowrate (m3/h)
Flowrate (m3/h)
Error (%)

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Radio technical specifications
Features Description
Standard Wireless M-Bus (EN13757), OMS
Modes T1, C1 (default)
Operating frequency range 868.0 - 868.6 / 868.7 - 869.2 MHz
Radiated power 14dBm max
Range (line of sight) up to 500 m
Device class Radio class 1
Certifications/Approvals CE in compliance with European standards
RED 2014/53/EU, RoHS2 (EU) 2017/2102
Data sent Meter serial number, total volume, instant flow, date, alarms
Configuration By radio, through the Android app
Data transmission frequency (default) Every 30 seconds, from Monday to Saturday, from 08:00 to 18:00
Encryption AES mode 5
Alarms (default) Magnetic tampering
Suspected leak (consumption of at least 1 litre every 15 minutes for 48 hours)
Flow rate limit exceeded (disabled)
Backflow (reverse flow for more than 100 litres)
Meter blocked (no consumption for at least 30 days)
Reversed meter (reverse flow lasts for more than 10 days)
2 Install the DomoJet R
Follow these steps to install the meter.
Warning! Installation and management of the device is permitted solely by authorised and appropriately trained
personnel (specialized installer or plumber assigned by the metering operator) equipped with sufficient technical
experience.
The meter ships with the seal / gasket kit, color-coded indicator, and optional fittings kit.
DANGER: Packaging material must be properly disposed of and kept out of children’s reach as it may represent a hazard.
Disposal must be performed following applicable laws.
1. Prior to installation, make certain that the two sections of tube are even to prevent mechanical stress. Clean them
with care (especially in the case of empty tubes) and let water flow through the tube using a stub pipe on the tube
Note: The limits can be modified using
the settings kit

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instead of the meter.
2. If there is no water in the tube before installing the meter, open the valve upstream from the meter. This is
necessary because the valve can cause air suction at the end of installation which could damage the meter.
3. Before using the meter, first fully remove air from the pipe and the meter itself. The interception/ adjustment valves
must be fully open when doing this. Open the valve at the start first and then open the valve at the end.
4. When replacing the meter, it is recommended to replace the gasket on the fitting. Recommended gasket hardness:
minimum 80 Shore A. Tighten the nut with a torque wrench and use a counter wrench to hold the meter in position.
Maximum tightening torque: 40 Nm. Before positioning the seal, make sure that:
 The seal is not damaged during installation.
 The level of the seal is level with the tubing.
 The seal does not protrude from the tube.
 The surfaces of the flange are clean and undamaged.
5. Install the meter in a position that is protected from freezing (insulate it if necessary with insulation material) and in
the lower part of the system to prevent air accumulation.
6. Use the following guidelines to ensure correct installation:
 Install the meter in a position protected from blows and tampering, where readings are easy to make.
 Install the meter so that the direction of the arrow on the meter coincides with the flow direction.
 Install proper interception valves upstream and downstream from the meter to permit maintenance operations and
inspections on the meter, as well as to check the system.
 The installation of a non-return valve inside or outside the meter is also recommended (see dedicated data sheet).
7. Check the seal hold to prevent leakage.
Follow these guidelines during installation:
Installation position
Observe the indications on the dial (letters H and V):
 H: the meter must be installed with the dial in a horizontal position.
 V: the meter must be installed with the dial in a vertical position.
 H and V: the meter may be installed with the dial in either a horizontal or vertical position.
 Avoid vertical installations with downward flow, or with the dial facing downwards.
Allowable water pressure (ISO 4064-1)
The maximum allowable pressure (MAP) is 16 bar, and is displayed on the meter dial. If not indicated on the dial, it must
be 10 bar. These values must never be exceeded. The maximum allowable pressure (MAP) downstream of the meter
must be greater than or equal to 30 kPa (0,3 bar).
Commissioning
Before putting the meter into operation, completely vent the air from both the pipe and the meter itself (rotate it if
necessary). The interception/adjustment valves must be fully open when doing this. Open the valve at the start first and
then the valve at the end.
Seals
A seal is applied to the meter: it cannot be opened without breaking it. Any intervention must therefore be carried out

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by a centre authorized by the manufacturer.
Use
DomoJet R is ideal for both cold and hot water residential use where compactness, flexibility and the availability of an
integrated radio reading make the difference.
Program the radio
DomoJet R is supplied with factory-set setup data. The radio is activated after the passage of 100 liters of water, but can
also be activated by placing a magnetic key in the appropriate symbol.
The radio settings, such as the type of radio frame and data transmission frequency, have a default factory setting.
You may change radio settings after radio activation using the appropriate programming kit. For further information,
contact the manufacturer.
Error codes
The error code is displayed in hexadecimal format.
The instrument identifies 5 errors which may also occur simultaneously.
Hexadecimal format Description
0080 Out Of Operating Temperature
0400 Low Battery Voltage
1000 Metrological verification period expired
4000 Metrological Wrong Checksum
Simultaneous errors are combined. For example; Low battery voltage + Metrological verification period expired = Error
1400.
Test mode
DomoJet R can be temporarily set to a high resolution in order to perform measurement tests. Contact the
manufacturer for further information.
Care and maintenance
No particular cleaning procedures are required. However, the installation area should be kept clean and periodic
checks should be performed to ensure the required environmental conditions are met.
Restriction: Use of abrasive products, gasoline, or trichloroethylene is prohibited.

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Disposal
The device is composed of materials of various nature including metal, plastic and electrical and electronic
components. It must be disposed of in compliance with applicable local laws regarding special and industrial waste.
The device cannot be disposed of as domestic waste.
The device does not contain any toxic/hazardous substances or elements, including lead, mercury, cadmium,
hexavalent chromium, polybrominated biphenyl. It therefore complies with the standard SJ/T11363- 2006.
At the end of the product’s life, ensure safe removal and responsible disposal of components, including recycling of
batteries, in compliance with applicable environmental laws in the country of installation.

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Appendix A: EU Declaration of Conformity
The following is the EU Declaration of Conformity from Maddalena®.

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Xylem
1) The tissue in plants that brings water upward from the roots;
2) a leading global water technology company.
We’re a global team unified in a common purpose: creating advanced technology
solutions to the world’s water challenges. Developing new technologies that will
improve the way water is used, conserved, and re-used in the future is central to our
work. Our products and services move, treat, analyze, monitor and return water to the
environment, in public utility, industrial, residential and commercial building services
settings. Xylem also provides a leading portfolio of smart metering, network
technologies and advanced analytics solutions for water, electric and gas utilities. In
more than 150 countries, we have strong, long-standing relationships with customers
who know us for our powerful combination of leading product brands and applications
expertise with a strong focus on developing comprehensive, sustainable solutions.
For more information on how Xylem can help you, go to www.xylem.com
SENSUS GMBH LUDWIGSHAFEN
Industriestr. 16
67063 Ludwigshafen
Germany
Tel [phone]
Email: [email protected]
www.sensus.com
Sensus, the Sensus logo, FlexNet® and associated logos are trademarks
of Sensus and its subsidiaries and affiliates.
© 2022, Sensus USA, Inc., a subsidiary of Xylem, Inc.
All Rights Reserved.