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SonoMeter 31 Energy Meter
Brand: DanfossThe 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/hr
- DN65, DN80 and DN100 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 50176 to 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
Specifications
Brand
Ambient Temperature Range
- Calculator: 5° to 55° C (41° to 131° F)
- Flow Sensor: -30° to 55° C (-22° to 131° F)
Approvals & Certifications
- CE
- MID
- EN 13757-3
- EN 13757-4
- EN 1434 Class 2 & Class C
Battery Life
- Minimum 10-Years (Including AMR Communication)
Cable Length
- 10 feet (3 metres) - Flow Sensor, Temperature Sensor Cable
Communication
- Baud Rate: 1,200, 2,400, 4,800, 9,600 (Default), 38,400, 56,000, 57,600, 1,15,200 (Modbus RS-485 Module)
- Baud Rate: 300, 1,200, 2,400 (Default), 4,800, 9,600 (Wired M-Bus Interface)
- Data Logging
- Optical Interface
- Radio OMS 868 MHz
- RS-485
- Wired M-Bus Interface
- Wireless M-Bus Protocol According to EN 13757-4
Connection Style
- Flange
Consumption
- Maximum
Control Functions Characteristics
- Heating/Cooling PID
Current
- Current Drawn: (1.5 mA) One M-Bus Load
- Typical Supply Current: 50 mA - Modbus RS-485 Module
Display
- 8-Digit LCD
Electrical Protection
- Polarity
- Reverse Polarity
Environmental Protection
- IP65 - Calculator & Flow Sensor
- IP67 - Heat & Cooling Meter
Flange Size - 2-1/2” (DN 65)
- 2-1/2” (DN 65) - PN 16
- 2-1/2” (DN 65) - PN 25
Flange Size - 3” (DN 80)
- Unrated
Flange Size - 4” (DN 100)
- Unrated
Flow Rate
- 0.10 to 0.24 m³/hour - Starting
- 0.25 to 0.6 m³/hour - Standard Min.
- Maximum
- Nominal 25 to 60 m³/hour
Frequency
- 5 Hz - Max.
Humidity
- 93 % Relative Humidity
Length
- 11.8” (300 mm) - DN 65
- 13.8” (350 mm) - DN 80 & DN 100
Maximum Voltage
- 3.6 V - Max.
- 50 Vdc - Wired M-Bus
Media
- Glycol Mixtures
- Water Quality with PH 7 to 9.5
Mounting
- Horizontal or Vertical
Operating Pressure
- psi: 362.3 (kPa: 2,500, bar: 25) - Max.
Operating Temperature
- -30° to 55° C (-22° to 131° F) - Flow Sensor
- 5° to 55° (41° to 131° F) - Calculator
Operating Temperature - Sensor
- 0° to 150° C (32° to 302° F)
Power Requirement
- 3.6 Vdc Lithium Battery
Rotation
- Minimum 45°
Sensor / Probe Material
- Brass
- Stainless Steel
Sensor / Probe Type
- Pt500 Ø 5.2 mm with 2-Wire Leads - Temperature Sensors
Storage Temperature
- 5° to 55° (41° to 131° F)
Supply Voltage
- 12-24 Vac/dc - Modbus RS-485 Module
- Mains Supply 230 Vac
Temperature Range
- 0° to 180° C (32° to 356° F)
