Danfoss SonoMeter31 Data sheet

Data sheet

SonoMeter 31

Energy Meters

Description

MID examination cer tificate no.:

LT-1621- M I 00 4 - 0 23

The Danfoss SonoMeter 31 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 31 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 25, 40 and 60 m³/h

• DN 65, DN 80 and DN 100 housings with
flange 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 (qi : qp) in class 2

• Temperature range 5 –130 °C

• Short overload temperature up to 150 °C

• Operating pressure 25 bar as standard

• For 2 or 4 wire temperature sensors

• Glycol mixtures as option (not MID certified)

• Calculator with IP65 protection class as
standard

• Flow sensor with IP65 protection class as
standard (IP67 for combine heating and
cooling applications)

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

• Battery lifetime for at least 10 years

• Insensitive to dirt

• Remote reading via wired M-Bus, radio OMS
868 MHz, RS-485 Modbus RTU, pulse output,
analog output and optical interface

• Two pulse inputs as standard (passive or
active)

• Special option with 2 flow sensors, 2
pressure sensors and 3 temperature sensors
measurement

© Danfoss | 2019.04 VD.SH.V3.02 | 1

Data sheet SonoMeter 31 - Energy Meters

Ordering

Energy meter
application

Heating DN 65 / qp 25 m³/h / 300mm flange M-Bus MWh (2 dig.) Return batter y 3.6 V DC 25 bar 187F3300
Heating DN 65 / qp 25 m³/h / 300mm flange OMS 868.95 MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3301
Heating DN 65 / qp 25 m³/h / 300mm flange M-Bus MWh (2 dig.) Return mains 230 V AC 25 bar 187F3302
Heating DN 65 / qp 25 m³/h / 300mm flange OMS 868.95 MWh (2 dig.) Return mains 230 V AC 25 bar 187F3303
Heating / cooling DN 65 / qp 25 m³/h / 300mm flange M-Bus MWh (2 dig.) Return batter y 3.6 V DC 25 bar 187F3304
Heating / cooling DN 65 / qp 25 m³/h / 300mm flange OMS 868.95 MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3305
Heating / cooling DN 65 / qp 25 m³/h / 300mm flange M-Bus MWh (2 dig.) Return mains 230 V AC 25 bar 187F3306
Heating / cooling DN 65 / qp 25 m³/h / 300mm flange OMS 868.95 MWh (2 dig.) Return mains 230 V AC 25 bar 187F3307
Heating DN 80 / qp 40 m³/h / 350mm flange M-Bus MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3308
Heating DN 80 / qp 40 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3309
Heating DN 80 / qp 40 m³/h / 350mm flange M-Bus MWh (2 dig.) Return mains 230 V AC 25 bar 187F3310
Heating DN 80 / qp 40 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return mains 230 V AC 25 bar 187F3311
Heating / cooling DN 80 / qp 40 m³/h / 350mm flange M-Bus MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3312
Heating / cooling DN 80 / qp 40 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3313
Heating / cooling DN 80 / qp 40 m³/h / 350mm flange M-Bus MWh (2 dig.) Return mains 230 V AC 25 bar 187F3314
Heating / cooling DN 80 / qp 40 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return mains 230 V AC 25 bar 187F3315
Heating DN 100 / qp 60 m³/h / 350mm flange M-Bus MWh (2 dig.) Return batter y 3.6 V DC 25 bar 187F3316
Heating DN 100 / qp 60 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3317
Heating DN 100 / qp 60 m³/h / 350mm flange M-Bus MWh (2 dig.) Return mains 230 V AC 25 bar 187F3318
Heating DN 100 / qp 60 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return mains 230 V AC 25 bar 187F3319
Heating / cooling DN 100 / qp 60 m³/h / 350mm flange M-Bus MWh (2 dig.) Return batter y 3.6 V DC 25 bar 187F3320
Heating / cooling DN 100 / qp 60 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return battery 3.6 V DC 25 bar 187F3321
Heating / cooling DN 100 / qp 60 m³/h / 350mm flange M-Bus MWh (2 dig.) Return mains 230 V AC 25 bar 187F3322
Heating / cooling DN 100 / qp 60 m³/h / 350mm flange OMS 868.95 MWh (2 dig.) Return mains 230 V AC 25 bar 187F3323

Cable length of te mperature sensors is 3.0m .
Cable length b etween flow sensor an d energy calculator is 3.0m.

Nominal flow, size
and connection type

Comm.

module

Energy unit Installation

Power

supply

Operating

pressure

Code no.

Accessories

Product Designation Quantity Code no.

Power supply Battery 3.6 V DC (D cell) 1 pc. 187F3380
Power supply Mains unit 230 V AC 1 pc. 187F3381
Communication module M-Bus module 1 pc. 187F3382
Communication module Radio OMS 868.95 MHz 1 pc. 187F3383
Communication module RS-485 Modbus RTU 1 pc. 187F3384
Communication module RS-232 M-Bus 1 pc. 187F3385
Communication module RS-485 M-Bus
Communication module M-Bus, RS232 and two pulses outputs
Communication module M-Bus, RS232 and two 4-20mA outputs

1)

1)

1)

1 pc. 187F3386
1 pc. 187F3387

1 pc. 187F3388
Temperature sensor Pt 500 / f 5.2 mm / 1.5 m cable, MID 1 pair 187F312 5
Temperature sensor Pt 500 / f 5.2 mm / 2 m cable, MID 1 pair 187F312 6
Temperature sensor Pt 500 / f 5.2 mm / 3 m cable, MID 1 pair 187F3127
Temperature sensor Pt 500 / f 5.2 mm / 5 m cable, MID 1 pair 187F3390
Temperature sensor Pt 500 / f 5.2 mm / 10 m cable, MID 1 pair 187F3391
Sensor pockets Ø 5.2 mm, brass, 35 mm length 1 pair 087G6053
Sensor pockets Ø 5.2 mm, brass, 52 mm length 1 pair 087G6054
Sensor pockets Ø 5.2 mm, brass, 85 mm length 1 pair 087G6055
Sensor pockets Ø 5.2 mm, brass, 120 mm length 1 pair 087G6056
Sensor pockets Ø 5.2 mm, stainless steel, 85 mm length 1 pair 087G6057
Sensor pockets Ø 5.2 mm, stainless steel, 120 mm length 1 pair 087G6058
Sensor pockets Ø 5.2 mm, stainless steel, 155 mm length 1 pair 087G6059
Sensor pockets Ø 5.2 mm, stainless steel, 210 mm length 1 pair 087G6060

1) Only with mains suppl y 230 V AC

2 | VD.SH.V3.02 © Danfoss | 2019.04

Data sheet SonoMeter 31 - Energy Meters

Technical specifications

Diameter D N 65 DN 80 DN 10 0

Connection type EN1092 flange
Overall length (mm) 300 350 350

Flow rate:

Nominal (m3/h) 25 40 60
Maximum (m3/h) 50 80 120
Standard min. (m3/h) 0.25 0.4 0.6
Star ting (m3/h) 0.10 0.16 0.24
Max. operating pressure 25 bar
Flow sensor temp. range 5 to 130 °C (short overload up to 150 °C)
Flow sensor cable length 3.0 m
Medium Water quality with pH 7 to 9.5
Pressure loss at qp, mbar 200 18 0 180
Measuring cycles Volume every 1 sec., energy, temperature sensors and display update every 10 sec.
Temperature sensors Pt 500 ø 5.2 mm with 2-wire leads
Temp. sensor cable length 3.0 m
Max. temp. diff. (∆θma x) 150 K
Min. temp. diff. (∆θmin) 3.0 K
Starting temp. diff. (∆θ) 0.15 K
Temp. measuring range 0 to 180 °C
Supply voltage 3.6 V DC Lithium-battery (D-cell) or Mains supply 230 V AC
Battery life time min. 10 years (including AMR communication)
Approval EN1434 class 2
Environmental class EN1434 class C
Ambient class class E2 + M1
Protection class Calculator: IP 65; Flow sensor: IP 65 (IP67 for heat and cooling meter)
Ambient operating temp. Calculator: 5 to 55 °C; Flow sensor: -30 to 55 °C
Ambient storage and

transportation temp.
Max. ambient humidity 93% rel. humidity
Display LCD, 8-digit
Display units MWh - kWh - GJ - Gcal - °C - m3 - m3/h
Display values Energy - volume - flow rate - power - temperatures

5 to 55 °C

Application drawings

Return pipe installation Supply pipe installation

Flow direction

Flow direction

VD.SH.V3.02 | 3© Danfoss | 2019.04