Valve-Controlled Ultrasonic Smart Water Meter_Valve-Controlled Ultrasonic Smart Water Meter_Ultrasonic Smart Water Meter_Production Center_Hangzhou SECK Intelligent Technology Co.,Ltd

Valve-Controlled Ultrasonic Smart Water Meter

▲Valve-Controlled Ultrasonic Cold Water Meter operates on the transit-time differential principle, delivering consistently high measurement accuracy under varying flow conditions.
▲Engineered with ultra-low power consumption, this device operates on a single-cell battery achieving 7+ years of service life—ensuring maintenance-free operation throughout its deployment cycle.
▲High repeatability, low pressure drop, no moving parts, and accuracy in compliance with GB/T 778-2018 and JJG 162-2019 calibration regulations.
▲Supports NB-IoT/RS-485/M-BUS/LoRa communication, enabling remote meter reading and valve control, facilitating centralized management for users and allowing for intelligent analysis of pipeline network data.
▲Designed for continuous long-term submersion with IP68-rated construction.

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Function Parameters Dimensions

The SECK LXC series ultrasonic valve-controlled smart water meter uses the principle of ultrasonic time difference method for flow measurement. It is a new type of smart water meter that integrates measurement, accumulation, display, and communication. It has advantages like low pressure drop, low start-up flow, high range ratio, strong protection, and stable measurement. It uses multiple patented technologies, including multi-pulse excitation, weak signal detection with low power consumption, variable time filtering algorithms, and data fusion algorithms, to accurately measure water consumption.

Users can access the engineering mode via the infrared interface to view information on different display screens and can enter the instrument calibration mode using an infrared handheld device. Remote valve control is achievable through NB-IoT, and on-site valve operation can be done using infrared tools.

Basic Parameters

Function	Parameter
Accuracy Class	2
Rangeability (R)	250(default)、200、160、125
Pipe Material	copper
Maximum Allowable Working Pressure (MAWP)	1.6MPa
Temperature Class	T30，T50
Upstream/Downstream Flow Profile Sensitivity Class	U0/D0、U5/D3、U10/D5
Environmental Class / EMC Immunity Class	0、E2
Display Content	Cumulative flow (m³), water temperature (℃) displayed in rotation
Display Resolution	Cumulative flow (0.001m³), calibration cumulative (0.001L)
Display Range	Cumulative flow：0~999999.999 m³
Data Communication	NB-IoT/RS-485/M-BUS/LoRa
Data Retention	Using ferroelectric technology, it stores accumulated traffic monthly, automatically stores the most recent 12 months of data, and maintains cumulative data for nearly 5 years.
Power Management & Consumption	Battery powered (DC 3.6V), replaceable, non-rechargeable, 0.25mW
IP Rating	IP68
Configuration Tools	Android Debugger V3.0 (Bluetooth Connection)

Flow Parameters

Nominal Diameter （DN）	Permanent Flow Rate Q3	Range Ratio Q3/Q1	Overload Flow Rate Q4	Permanent Flow Rate Q3	Transitional Flow Rate Q2	Minimum Flow Rate Q1	Minimum Reading Min	Maximum Reading Max
（mm）	(m3/h)		(m3/h)		(L/h)		m3
15	2.5	250	3.125	2.500	16.000	10.000	0.001	999999.999
20	4.0		5.000	4.000	25.600	16.000
25	6.3		7.875	6.300	40.320	25.200

Maximum Permissible Errors:

a) Within the working temperature range of 0.1℃≤Tw≤50℃, the maximum permissible error is ±5% in the lower zone (from the minimum flow rate Q1 inclusive to the transitional flow rate Q2 exclusive).

b) Within the working temperature range of 0.1℃≤Tw≤30℃, the maximum permissible error is ±2% in the higher zone (from the transitional flow rate Q2 inclusive to the overload flow rate Q4 inclusive).

c) Within the working temperature range of 30℃≤Tw≤50℃, the maximum permissible error is ±3% in the higher zone (from Q2 inclusive to Q4 inclusive).

Nominal Diameter	L1	L	W	H	Connection Thread
mm					d	D
15	165	143	102	84	R1/2	G3/4
20	195	143	102	89	R3/4	G1
25	225	143	102	98	R1	G1-1/4

Valve-Controlled Ultrasonic Smart Water Meter

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