Danfoss SonoMeter 40 Data sheet

Data sheet

SonoMeter 40

Energy Meters

Description

The Danfoss SonoMeter 40 is a range of
ultrasonic, compact energy meters intended for
measuring energy consumption in heating and
cooling applications for billing purposes. The
meters are designed for remote meter read-out
(AMR).

SonoMeter 40 energy meters consist of
an ultrasonic flow sensor, a pair of Pt500
temperature sensors and a calculator
with integrated circuits for temperature
measurement, flow calculation and energy
calculation.

Features

• Available in nominal flow rates qp 0.6, 1.5, 2.5,

3.5, 6.0, 10.0, 15.0, 25.0, 40.0 and 60 m3/h

• Triple communication with M-Bus, wMBus
onboard + 1 additional communication module
slot

• Housings with thread (G3/4 to G2) or flange
(DN 20 to DN 100) connections

• MID approval for ultrasonic energy meter with
dynamic range of 1:100 (qi:qp) in class 2

• Optional MID approved dynamic range of 1:250
in class 2

• Temperature range 0 - 180 °C

• Nominal pressure PN25 bar as standard

• Calculator with IP65 protection class as
standard (IP68 on special request)

• Flow sensor with IP68 protection class as
standard

• Return or supply pipe installation, for vertical or
horizontal mounting

• Battery lifetime for at least 15+1 years

• Low pressure loss, insensitive to dirt

• No calming sections needed before or after the
flow sensor (DN 15-DN 50)

• For DN 65 to DN 100 calming sections are
needed (5 x DN on inlet and 3 × DN on outlet of
flow sensor)

• Remote reading via M-Bus, radio OMS 868 MHz,
RS 485 Modbus, BACnet, LoRA-WAN, pulse
output or optical interface

• Two pulse inputs or outputs (always included,
optionally with pre installed cable)

© Danfoss | Energy Meters | 2022.03 AI384640298387en-010103 | 1

Data sheet SonoMeter 40

Technical specifications

Complete energy meter

Application Heating or Bifunctional (combined heating and cooling)
Medium Water quality with pH 7 to 9.5 VDI 2035, VdTÜV TCh 1466

Measuring cycle

Approved meteorological range

Temp. limits (energy calculation)

Ambient operating temperature Class C: 5 - 55 °C indoor installation, condensing, humidity max. 93%.

Ambient storage temperature temperature: -25 – +35 °C, humidity: max. 60%.
Mechanical environment Class M1
Electromagnetic environment Class E2

Flow: 1 sec.
Energy: 1 sec.
Temperature: 10 sec.

∆Θ: 3 - 175K
Θ: 0 - 180 °C
Θq: 0.1 - 130 °C
∆Θ: 0.2 - 180K
Θ: 0 - 180 °C

Calculator

IP [EN60529] 65 (68 on special request)

Voltage 3.6V DC

Battery Supply

Mains supply 24 V AC/DC
(internal module)

Mains supply 230 V AC
(external transformer)

Display

Display Units MWh - kWh - GJ - Gcal - °C - m3 - m3/h
Display Values Energy - volume - flow rate - power - temperatures
Optical interface Always included According to EN61107 (IEC1107)

Communication

Additional
communication

Batter y type and size 2x Lithium Battery, AA-size
Battery life time 15+1 years (including AMR communication)

Voltage

Power consumption not more than 20 mA
Alternating current voltage frequency 50/60 Hz

Backup supply

Mains supply cable 2 wire copper cable with a diameter of 2 × 0.25 mm²

Voltage

Power consumption not more than 5 mA
Alternating current voltage frequency 50/60 Hz

Backup supply

Mains supply cable 2 wire copper cable with a diameter of 2 × 0.25 mm²
85 x 35 mm LCD display with 8 digits (11.5 mm high main characters)

Menu guide and info panel

To be specified when ordering the
meter. Both options can be selected.

Delivered from factory or later
upgrade. One option from the list is
possible.

12 V - 36 V AC
12 V - 42 V DC
Galvanically isolated

Internal backup battery: 1x AA-size
Service life not less than 15 years (without data reading via
a digital or wireless interface) - for powering of the meter,
when the ex ternal power supply is turned of f.

230 VAC +10% -15%
to 24VAC transformer for connection to mains power
supply 24 AC/DC module.

Internal backup battery: 1x AA-size
Service life not less than 15 years (without data reading via
a digital or wireless interface) - for powering of the meter,
when the ex ternal power supply is turned of f.

1. M-Bus according to EN13757-3, supports 300, 2400,
4800, 9600 baud. Delivered with 1,5 m cable.

2. wM-Bus 868 MHz (S1, T1 OMS)

1. Wired M-Bus

2. Modbus RTU

3. BACnet MS/TP

4. LoRaWAN

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Data sheet SonoMeter 40

Technical specifications

(continuous)

Flow sensor

Diameter DN 15 DN 20 DN 15 DN 20 DN 15 DN 20 DN 20 DN 25 DN 25 DN 4 0 D N 50 DN 65 DN 80 DN 10 0

Nominal f low q

Max flo w q

Minimum flow (1:100) q

Cut off f low qc

Overf low q

Pressure dr op at q

Kvs values

Connection G¾B G1B FL G¾B G1B FL G¾B G1B FL G1B G1B FL G1B G1¼B G1¼B G2B FL FL FL FL FL

Overall length (mm) 110 190 11 0 19 0 110 165 190 130 190 130 26 0 260 300 270 300 300 360

Material o f flow sensor CW 617N CC770S

Pressure PN (bar) 25 bar

IP [EN6 0529] IP68

Temperature media (°C) Θq: 0.1 - 130 °C

Cable length 1.2 m, 2.5 m or 5 m

Mounting

p

s

ss

Temperature sensor

Typ e Pt500, 2 wire, according to EN1434, EN60751

Size / IP

Cable length 1.5 m, 3 m, 5 m or 10 m
Accuracy Class B (EN60751)
Approved temp. range EN60751 Θ: 0 - 150 °C
Difference temp. EN60751 ∆Θ: 3 - 150 K
Pressure 25 bar
Mounting without pockets for sizes G3/4 and G1 only

(m3/h) 0.6 1.0 1.5 2.5 3. 5 6 10 15 25 40 60

(m3/h) 1.2 2 3 5 7 12 20 30 50 80 120

(m3/h) 0.006 0 .01 0 .015 0.025 0.035 0.06 0 .1 0.15 0.25 0.4 0.6

i

(m3/h) 0.0 03 0.005 0 .003 0.005 0.005 0. 007 0 .012 0.02 0.03 0.05 0.08 0 .12

(m3/h) 1.44 2.4 3.6 6 8.4 14.4 24 36 60 96 144

(mbar) 70 9 113 25 171 58 72 94 198 90 100 180 120 200 18 0 18 0

p

2.27 6.32 2.97 6 .32 3.63 6.23 5.59 8.15 5.62 11. 67 18. 97 23.57 43 .3 55.9 94.3 141.4

DN 65 - DN 100: cal ming sections a re needed (5 x DN on inl et and 3 x DN on outlet)

Ø5.2 mm / IP65
Ø6 mm / IP67

Any positi on; DN 15 - DN 50: No calming se ctions neede d

Communication interfaces Optical interface

Optical interface is integrated into the front
panel of the calculator. It is designed for data
reading via M-bus protocol and parameterization
of the meter using SonoMeter 40 UserConfig
software and optical head OG-1-USB.
The optical interface is activated by pressing
the control button and shuts automatically off
5 minutes after the last pressing button or after
completing data transmission via interface.

Wired M-Bus interface

- M-Bus protocol according to EN13757-3
standard

- 2 wire with polarity reversal protection

- Galvanic insulation

- Current drawn: one M-Bus load (1.52mA)

- Primary or secondary addressing supported

- Primary M-Bus address (M-Bus integrated) last
2 digits of a serial number; if “00” the primary
address is 100.

- Primary M-Bus address (Additional M-Bus
module) Address “2”.

- Configurable baud rate
300/1200/2400/4800/9600, factory default
2400 baud rate.

- Battery lifetime min 15+1 years (2 x AA cell)

- Battery supply communication is limited on
every 15 min at 2400 baud rate or faster, 70
energy meters on bus

- Fastest reading interval at mains supply: no
limits

- Default M-Bus telegram includes below
information’s:

• Date and time

• Date and time of error starting

• Error code

• Battery operation time

• Working time without error

• Energy for heating

• (Energy for cooling)

• (Energy of tariff 1)

• (Energy of tariff 2)

• Volume

• Pulse input 1

• Pulse input 2

• Power

• Flow rate

• Temperature 1

• Temperature 2

• Temperature difference

• Serial number

AI384640298387en-010103 | 3© Danfoss | Energy Meters | 2022.03

Data sheet SonoMeter 40

Communication interfaces

(continuous)

Wireless M-Bus (OMS) interface, 868.95 MHz

- Wireless M-Bus protocol according to EN13757-4

- OMS (open metering system) compatible, compliant to OMS 4.0.2

- T1 mode (unidirectional)

- sending interval every 90 seconds
(suitable for ‘walk by’ readings)

- battery lifetime min 15+1 years (2 x AA cell)

- default wireless M-Bus telegram includes below information’s:

• Energy for heating

• Time

• Volume

• Energy for cooling

• Pulse in 1

• Pulse in 2

• Power

• Flow

Wireless M-Bus telegram parameter list and sending frequency is configurable!

Modbus RTU, RS485 module

Connectors 90 (noninverting, +) and 91 (inverting, -)
Baud rate 1200, 2400, 4800, 9600 (default), 38400, 56000, 57600, 115200 bps

Data format

Power supply

8E1 (8 data bits, even parity bit, 1 stop bit) – default
8O1 (8 data bits, odd parity bit, 1 stop bit)
8N2 (8 data bits, no parit y bit, 2 stop bits)

Polarity independent connection for power supply – connectors 60 and 61
Voltage 12-24 V AC/DC
Maximum power consumption 2 W max.
Typical supply current 50 mA

BACnet MS/TP, RS485 module

BACnet MS/TP protocol and a serial interface for communication with external devices.

Connectors 90 (noninverting, +) and 91 (inverting, -)
Baud rate 9600, 19200, 384 00 (default), 57600, 76800, 115200 bps
Data format 8E1 (8 data bits, even parity bit, 1 stop bit)

Polarity independent connection for power supply – connectors 60 and 61

Power supply

Voltage 12-24 V AC/DC
Maximum power consumption 2 W max.
Typical supply current 50 mA

LoRaWAN, 868 module

Transmitting scenarios:

• Heating: Energy and volume + 4 historical values.

• Heating and Cooling: Heating Energy, Cooling energy + Volume + 2 Historical values.

Pulse inputs

Number of pulse inputs 2 or no (to be specif ied when ordering)
indicated units m
pulse value programmable
input pulse types IB according to LST EN1434-2
maximum permissible frequency 3 Hz
maximum permissible voltage 3.6 V
condition of maintenance of high level 3.6 V through 3.3 MΩ resistor

3

For versions with not openable enclosure (IP68), when meter is ordered with the pulse inputs, a
permanently connected 1,5 m cable is fitted in the meter for connecting the pulse inputs.

Pulse outputs

Number of pulse outputs 2 or no (to be specified when ordering)
Class OB in operating mode (OD in test mode)
Typ e open collector
Permissible current up to 20 mA
Voltage up to 24 V
Pulse duration 125 ms in operating mode (1.2 ms in test mode)

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Data sheet SonoMeter 40

Communication interfaces

(continuous)

Data logger

Pulse value in the operating mode:

- when the output is configured for energy, the value of its pulses can be selected from the list

Energy measurement units Possibl e values for the en ergy pulse *

„kWh“ or „MWh“ 0,00001; 0,0001; 0,001; 0,01; 0,1; 1; 10; 100; 1000; 10000 MWh/pulse
„GJ“ 0,0001; 0,001; 0,01; 0,1; 1; 10; 100; 1000; 10000 GJ/pulse
„Gcal“ 0,0001; 0,001; 0,01; 0,1; 1; 10; 100; 1000 Gcal/pulse

* length of value s list depends of perman ent flow rate and LCD energy value comma p osition

- when the output is configured for water quantity, the value of its pulses can be selected from
the list:

0,001; 0,01; 0,1; 1; 10 m³/pulse

For versions with not openable enclosure (IP68), when meter is ordered with the pulse outputs, a
permanently connected 1,5 m cable is fitted in the meter for connecting the pulse outputs.

Following hourly, daily and monthly parameter values are recorded in energy meter memory (can be
configured by SonoMeter 40 UserConfig software):

1............. Integrated heating energy

2............. Integrated cooling energy

3............. Integrated energy of tariff 1

4............. Integrated energy of tariff 2

5............. Integrated volume of liquid

6............. Integrated pulse value in pulse input 1

7............. Integrated pulse value in pulse input 2

8............. Maximum thermal power value for heating and date

9............. Maximum thermal power value for cooling and date

10.......... Maximum flow rate value and date

11........... Maximum value of flow temperature of heat conveying liquid and date

12........... Maximum value of return temperature of heat conveying liquid and date

13.......... Minimum value of flow temperature of heat conveying liquid and date

14.......... Minimum value of return temperature of heat conveying liquid and date

15.......... Minimum value of temperature difference and date

16.......... Average value of flow temperature of heat conveying liquid

17........... Average value of return temperature of heat conveying liquid

18.......... Operating time without an error of thermal energy calculation

19.......... Total error code

20.......... Time when the flow rate exceeded 1.2 qs

21.......... Time when the flow rate was less than qi

Bifunctional meters

Data logger capacity

• up to 1480 h - for hourly records

• up to 1130 days - for daily records

• up to 36 last months - for monthly records

• Storage time of measured integrated parameters even if device is disconnected from

power supply: not less than 15 years

All data from archive can be read by means of the remote reading. In addition, data logger records of
monthly parameters can be seen on the display.

When the cooling energy tariff function is activated, in case of a negative temperature differential,
energy will be accumulated in the additional tariff register Q. In this case, energy values are
calculated according to the following formulas:

– when the flow sensor is in the supply line

when Θ1 > Θ2: Q = V  ρ  (hΤ1-hΤ2), Q = 0
when Θ1 < Θ2: Q = V  ρ  (hΤ2-hΤ1), Q = 0

– when the flow sensor is in the return line

when Θ1 > Θ2: Q = V  ρ  (hΤ1-hΤ2), Q = 0
when Θ1 < Θ2: Q = V  ρ  (hΤ2-hΤ1), Q = 0

AI384640298387en-010103 | 5© Danfoss | Energy Meters | 2022.03

Data sheet SonoMeter 40

5

4

3

2

1

0

-1

-2

-3

-4

-5
q

i

qpq

s

EN1434 class 2

Key

typical accuracy

Application drawings

Return pipe installation

Flow direction

Flow direction

Supply pipe installation

Accuracy

Error [%]

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Flow measurment accuracy

In

Data sheet SonoMeter 40

Pressure loss

Menu structure

INT

Integral parameters

BIL

Statistical data

INF

formative parameters

1.1 1.2 1.3 1.4 1.51.6 1.7

2.1 2.2 2.3 2.4 2.52.6.1 2.7.12xx 2.15.1

3.1 3.2 3.3 3.4 3.5

3.6.13.7 3x 3.15

1.8

1.9

Long press
Shift down

Short press
Shift to the right

AI384640298387en-010103 | 7© Danfoss | Energy Meters | 2022.03