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The M-Bus meter reading system (symphonic mbus) is a European standard 2-wire two-bus, mainly used for consumption measuring instruments such as heat meters and water meters.
The ultrasonic water meter is an all-electronic water meter obtaining water flow rate by analyzing and processing water speed by detecting the time difference caused by the change of velocity when the ultrasonic beam propagates along or adverse current. It has the characteristics of low start-up flow rate, wide range ratio and high measurement accuracy. Without movable parts and flow resistant elements in the meter body, as well as impact of impurities in the water, the meter has a long service life.
The M-Bus meter reading system (symphonic mbus) is a European standard 2-wire two-bus, mainly used for consumption measuring instruments such as heat meters and water meters. The M-BUS ultrasonic water meter is connected by wire, with simple wiring and stable communication, suitable for new buildings and other convenient wiring installation environment.
Design schematic and corresponding dimensions
Ultrasonic valveless water meter
Nominal diameter | Length (L) | Width (B) | Height (H1) | Height (H2) | Thread (D) |
mm | mm | mm | mm | mm | mm |
15 | 165 | 92 | 200 | 106 | G3/B4 |
20 | 195 | 92 | 200 | 106 | G1B |
25 | 225 | 90 | 218 | 115 | G1-1/4 B |
FEATURES
v Wide range ratio, metering accuracy R250, customizable R400
v Adopt international mainstream metering chip, ultrasonic sampling frequency of 8-16Hz
v No mechanical moving parts, no wear, antifreeze and long service life
v Level of protection of IP68, suitable for indoor and outdoor installation
v Large capacity lithium battery, with more than 10 years battery life
v Comply with GB/T 778, MID, ISO 4046 and CJ/T 434 standards
v Three types of pipe : copper pipe without valve, copper pipe with valve control and composite material pipe.
Technical parameters (three consistent)
Parameter type | Parameter item | Unit | Nominal diameter DN (mm) | ||
15 | 20 | 25 | |||
Flow parameters | Start-up flow rate | m3/h | 0.002 | 0.004 | 0.006 |
Minimum flow(Q1) | m3/h | 0.010 | 0.016 | 0.025 | |
Boundary flow(Q2) | m3/h | 0.016 | 0.025 | 0.040 | |
Common flow(Q3) | m3/h | 2.5 | 4.0 | 6.3 | |
Overload flow(Q4) | m3/h | 3.125 | 5.0 | 7.875 | |
Flow range(Q3/Q1) | 250 | 250 | 250 | ||
Q1~Q2 error | ±4% | ||||
Q2~Q4 error | ±2% | ||||
Temperature compensation | Yes | ||||
Temperature class | T30 | ||||
Press parameters | Maximum working pressure | MPa | 1.6 | ||
Pressure loss | KPa | ＜40 | |||
LCD display | Number of digits displayed | 8 | |||
Maximum display range (LCD display) | m3 | 999999.99 | |||
Minimum instantaneous flow rate (LCD display) | m3/h | 0.001 | |||
Maximum instantaneous flow rate (LCD display) | m3/h | 99.999 | |||
Data storage | Historical data | Day | Last 31 days | ||
Hour | 每天48个间隔流量 48 interval flows per day | ||||
Protection | Protection class | IP68 | |||
Installation environment | Climate and Mechanical Environmental Safety Level | O (fixed installation to outdoor) | |||
Electromagnetic environment | Electromagnetic compatibility grade | E1 (residential, commercial and light industry) | |||
