Ultrasonic Smart Water Meter

Product Description

NWM UL-DW is the ultrasonic water meter having the size from Dn15 to Dn40 for domestic and commercial using based on the ultrasonic technology, enables to calculate water consumption exactly, which designed and manufactured by NWM.
CHARACTERITICS: No moving parts permitting the most reliable and longer term life; lowest pressure loss; High accuracy, unaffected by sand, suspended solids or air pockets; Reverse flow detective; 10 years battery life; AMR or AMR ready for wire or wireless communication; IP 68 environment protection Class LCD Digital Display:
DIAL FACE DESIGN
DIMENSION

Size	Dn15	Dn20	Dn25	Dn32	Dn40
L	130/165	130/154/190	225/260	225/260	245/300
L1	244/259	234/258/294	345/380	349/380	331/386
D	G3/4B	G1B	G1-1/4B	G1-1/2B	G2B
D	R1/2	R3/4	R1	R1-1/4	R1-1/2
H	123	123	152	152	152

L1: the length of the water meter with connection.
Main Technical Data:

Size	mm	Dn15	Dn20	Dn25	Dn32	Dn40
R	Q3/Q1	250	250	250	250	250
Q4	m3/h	3.125	5	7.875	12.5	20
Q3	m3/h	2.5	4	6.3	10	16
Q2	l/h	16	25	40	64	102
Q1	l/h	10	16	25	40	64
Starting flow rate	l/h	<4	<4	<4	<8	<11
Max. reading	m3	99999.999
Min. reading	liter	0.1
Min. reading (calibration)	liter	0.0001
Max. pressure	MAP	MAP16
Max. temperature	ºC	T30,T50
Installation position	Any position
Display Interface	Instantaneous flow, Accumulate flow, Wireless signal Working status, Reverse flow detect…
Communication port	Optical (infrared ray), M-Bus, Pulse Raido Frequency, LORA, NB-IoT...
Climate and EMC Class:	(E1,M1) (B/C)

(For different Q3 and R, please contact with NWM manufacture).
MAX PERMISSION ERROR:
From Q1 inclusive up to but excluding Q2 is ± 2% for T30 (From Q1 inclusive up to but excluding Q2 is ± 3% for T50);
From Q2 inclusive up to and including Q4 is ± 5%;
INSTALLATION: Suggest to install the UL-DW water meter at U5 D3 (Straight pipe before the water meter at 5D, after the water meter at 3D); Water flow should be in the same direction with the arrow on water meter main case; if installed horizontally (or vertically), water meter surface should face right upwards (or right ahead), and it cannot have any deflection from water meter outlet axis; The installation location should be protected from sunlight, freezing, pollution and water drown for easy removing and cannot be install near the inlet of the pump; Flush the pipe work thoroughly to clear all impurities before install the water meter; The water meter and pipeline should be connected by pipefitting, sealing gaskets and connecting nuts (the connections). The water meter should not be removed by force to prevent the damage to the water meter cover.

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