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Hotline： 400-180-9689 Qingdao iESLab Electronic Co., Ltd.(Business Center) Address: 17th Floor, Building A2-3, Hanyu Jingu, High-tech Zone, Jinan City
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NB-IoT is an emerging technology in the IoT field that supports cellular data connection of lower power consumption devices in WAN, also known as low-power wide area network (LPWAN).
Product overview
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.
NB-IoT is an emerging technology in the IoT field that supports cellular data connection of lower power consumption devices in WAN, also known as low-power wide area network (LPWAN). NB-IoT supports efficient connection of devices with long standby time and high network connection requirements. NB-IoT ultrasonic water meter does not need wiring, and has the characteristics of low power consumption, wide coverage, large connection and high security. It is suitable for new buildings, old structure renovation, villa and other different installation environment.
Product appearance
Design schematic and corresponding dimensions
Ultrasonic (valve control) water meter
Nominal diameter | Length (L) | Width (B) | Height (H1) | Height (H2) | Thread |
mm | mm | mm | mm | mm | D |
15 | 165 | 90 | 121 | 90 | G3/B4 |
20 | 195 | 90 | 141 | 110 | G1B |
25 | 225 | 90 | 151 | 120 | G1-1/4 B |
Product characteristics
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 10 years more battery life
v Optional valve control function is available, so prepayment can be achieved combined with operation system.
v With remote upgrade function
v Comply with GB/T 778 and CJ/T 434 standards
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 | 48 interval flows per day | ||||
Complete machine protection | Protection grade | 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) | |||
