NB-IOT ultrasonic water meter

Support Photoelectric、RS-485、M-Bus、LoRa、NB-IoT,etc transmission methods.

Products features

The features of this series of SMART ultrasonic water meter are summarized as follows:

■Unlimited installation Angle；

■Valve control integrated；

■Wide range ratio(R160/R200/R250/R400), High accuracy level, good stability；

■Multi transmission methods: Photoelectric、RS-485、M-Bus、LoRa、NB-IoT,etc.

■No mechanical transmission parts、wear-free.

■Low startup flow rate(Startup flow rate can reach 0.0015m³/h).

■With water temperature measurement function.

■The whole water meter is designed with IP68, which can work under water for a long time.

■ Micro-power technology, battery power (measurement cycle 1s, battery theoretical work more than a decade).

■ Highly intelligent self-checking capability, monitoring common problems such as empty pipes, air bubbles, transducer aging, battery undervoltage, abnormal water temperature (too high or too low), abnormal water volume (leaking or running water) and other problems (above functions are Optional), can adopt NB-IoT technology, and push information to users at first time.

Technical Parameters

Item	Unit	Parameter
Nominal diameter	mm	15	20	25	32	40
Overload Q4	m³/h	3.125	5	7.875	12.5	20
Permanent flowQ3	m³/h	2.5	4.0	6.3	10	16
Range ratioQ3/Q1		R=200/R250/R400（The standard range ratio is R160, if need others, please mentioned ）
Transitional flow-rateQ2	m³/h	0.02	0.032	0.05	0.08	0.128
Min flowQ1	m³/h	0.0125	0.02	0.0315	0.05	0.08
Accuracy		Class 2
Temperature class		T30/T90
Nominal pressure		1.0MPa（Default ）、1.6MPa、2.5MPa（Customized ）
Pressure loss class		△p63
Flow profile sensitivity level		U10/D5
Climatic and mechanical environmental level		Class B
Installation method		Horizontal installation or vertical installation (under water inlet)
Battery		34615 battery （default ）/26500battery