HRI
www.sensus.com
info.int@xyleminc.com
MS 8100 INT4 / 02-2020 • 0005
HRI is available in two versions.
• The HRI-A PulseUnit provides high-resolution
pulse outputs.
• The HRI-B DataUnit has additionally a data
interface for reading meter ID number and
index.
Delivery parts 1
HRI sensor, bayonet ring, cut meter lid, 2 screws,
2 screw seals, 1 adhesive seal
Installation:
Just before mounting the HRI on the meter it
is essential to remove the aluminium foil at the
bottom side. A screwdriver Torx (T8) or slot
(3.5*0.6) is recommended for mounting. The
torque should be 0.6 Nm
Meters with plastic register 2
Change the lids and put the HRI on the meter, so
that the two pins on top of the register fit exactly
into the holes at the bottom of the HRI. Fit the two
screws. For tamper protection fit the plastic seals
on top of the screws. The bayonet ring and the
adhesive seal are not used for this register type.
Meter with glass-copper register 3
First exchange the lids. Mount the HRI with both
the screws on the bayonet ring. For tamper
protection fit the plastic seals on the top of the
screws. Fit the bayonet ring with the mounted
HRI on the top of the meter register and turn
it until it is drops into place. Push and turn the
bayonet ring clockwise until the lever clicks into
place. If required fit the adhesive seal. To remove
the HRI lift the lever and rotate anticlockwise.
Type 4
Depending on the order specification, HRI can be
in these different pulse modes:
HRI Pulse Unit: Type A3 and A4
HRI Data Unit: Type B2, B3 and B4
with following pulse weights:
Possible values for residential meters:
D = 1 / 2.5 / 5 / 10 / 25 / 50 / 100 / 250 / 500 or 1000
Pulse
mode
Wire
l1 (white) l2 (yellow)
B1 Balanced pulses**
Tamper/ Error
“normally open”
B2
Forward ow
pulses
Reverse ow
pulses
A3/B3
Forward and
backwards pulses
Flow direction
A4/B4 Balanced pulses**
Tamper/ Error
“normally closed”
**) Balanced pulses: Reverse flow must be
compensated by identical forward flow before
more pulses are output. That means, no output
pulses during this period even the meter is
counting forward.
Ground (brown)
DATA (green) only for HRI Type B (alternatively
for external power supply)
Battery or external power supply (for all B types):
3V Lithium battery with autonomy lifetime of
more than 10 years.
With unbroken permanent external power supply
of 24VDC (max. 50VDC) unit lifetime is increased
to more than 15 years. In case of external power
failure the battery of the module takes over the
supply. All stored data are retained and the
volume detection continues automatically. The
external power supply can also be an M-Bus
central unit.
Technical data
• Temperature range
Storage: -20 °C to +65 °C
Operation: -10 °C to +65 °C
• Cable length: 1.5 m
• Hermetically sealed housing IP 68
• EMC acc. EEC directive 98/34 equal European
standards EN61000-6-1
Pulse-outputs (I1/I2) all types
Open drain transistor switch according ISO/TC30
Vmax: 24V DC / Imax: 20mA / Pmax: 0,48VA /
fmax: 5Hz
Max. voltage by closed switch: 0.3V + I * 260
If the data interface isn’t used the serial resistance
can be reduced by 150 with the connection of
green and brown wire.
HRI-A
Meter
DN
Pulse weight (length)
D1
(124ms)
D10
(500ms)
D100
(500ms)
A4 15-40 1l 10l 100l
A3 15-40 1l ---- ----
HRI-B: Pulse length 124 ms fixed,
Flow direction (A3/B3) signal l2 is 18s prior to I1
Operational cable length up to 10 m
Transient voltage protection is highly
recommended for wiring outside buildings.
Data interface (HRI-Bx only)
M-Bus and MiniBus (Auto speed detection:
300/2400 Baud)
Protocol according EN13757-3 equal IEC 870 / EN
1434-3
Data: meter ID, meter index (optional 1 litre or 1
m resolution)
Operational cable length: according to M-Bus
specification.
With M-Bus reading is unlimited, with MiniBus
the reading shouldn’t be more than 5 times per
day to avoid a battery lifetime of less than 10
years.
With the data interface the following values
can be set via MiniCom (version >3.0); standard
setting from the factory in brackets:
• Primary address (0)
• Secondary address (HRI-Fabrication No.)
• Meter ID No. (HRI-Fabrication No.)
• Meter index (0); if the aluminium foil is
missing, index can be different
• Pulse mode (according the order)
• Pulse weight (according the order)
Attention: The resolution of meter index can’t be
changed, so this setting must be correctly defined
with the order.
If the HRI is ordered mounted on top of a meter,
the secondary address, meter ID no. and meter
index are preset with the meter’s values. Setting
on site isn’t necessary.
If data interface and pulse output is used at the
same time, potential free connection for the
connected devices are requested. During data
communication pulse lost is possible depending
on the pulse collector’s input circuit.
Disposal instructions
This product contains a lithium
battery. To protect the environment
it should not be disposed in
household rubbish when its
serviceable life is over. Disposal
can take place through a Sensus
Service Center. If however you
want to take care of the disposal yourself, please
comply with the local and national regulations for
environmental protection.
INSTALLATION AND OPERATING INSTRUCTIONS – HRI
1
EN DE FR ES
2
3
4
Application examples
All connections with external power supply are optional.
It can use the HRI’s internal battery.
1
2
3
4
5
6
l1 white or
l2 yellow
Ground: brown
Data: green (HRI-B)
0.3 V
HRI
A4
B4
green
white
brown
PLC
+24 V
pulse
unit
PLC with switched
ground
HRI with external
power supply
green
white
brown
1k
PLC with
switched
power
supply
brown
yellow
white
soldering side
plug
Connection with
CDL
forward
backwards
88888888
88888888
0V
0V
only with A2/B2
yellow
count 20 HZ
brown
white
count 20 HZ
TR100 (829372)
Remote display
This application can
be also used as a
test tool for all HRI
types
+24V
HRI
(B2)
HRI
(A3)
HRI
A4
B4
forward
Flow
forward
meter index
backwarts
Mode A4, B1, B4
Mode B2
Mode A3 / B3
open
close
forward
backwards
forward
l2 (direction)
l1 (forward & backwards)
l2 (backwards)
l1 (forward)
open
close
open
close
open
close
open
close
l1 (balanced)
To Next Page
Need help?
General
