Ultrasonic Bulk Water Meter

• Install: Horizontal
• Medium Temperature: Cold Water
• Level Measurement: C
• Counter Instructions: Analogue
• Nominal Diameter: 50-100mm
• Application: Civil
• Model NO.: UL-BW
• Principle: Ultrasonic
• Medium Pressure: General Water Meter
• Work Environment: Dry Water Meter
• Stucture: Wireless Communicating
• Transport Package: Pallet
• Specification: CE approval
• Trademark: NWM or OEM
• Origin: Ningbo, China
• HS Code: 90282010
• Production Capacity: 500, 000/Year

Product Description

NWM UL-BW is the ultrasonic water meter having the size from Dn50 to Dn200, designed and manufactured by NWM.

WORKING PRINCIPLES:


The sound wave that flows in the direction of the stream moves faster than the one that flows against the stream.
The transit times Tab (Transit time of ultrasonic waves from sensor A to sensor B) and Tba (from sensor B to A) are measured continuously. The time difference (Tba - Tab) is directly proportional to the mean flow velocity (Vm) of the liquid. The flow rate is a result of the velocity multiplied by the cross section area of the flow tube size.
CHARACTERITICS:

• No moving parts permitting the most reliable and longer term life; lowest pressure loss;
• High accuracy, can be produced for Class I or Class II;
• Battery life: ≥10 years; possible to keep the external Battery bag for easy to exchange;
• AMR ready for RS485, M-BUS...;
• Digital Display:

DIMENSION:




The Flange Standard under ISO 7005-2:1998(E) PN10 as:

Dn	50	65	80	100	125	150	200
L	200		225	250		300	350
H	178		197	215		273	328
W	160		196	215		282	340
D	160		196	220		285	340
D1	125		160	180		240	295
nxM	4xM16			8xM16		8xM20

Main Technical Data: ISO 4064 Class B

Size	mm	50	65	80	100	125	150	200
R	Q3/Q1	200	200	200	200	200	200	200
Q4	m^3/h	50		78,75	125		312,5	500
Q3	m^3/h	40		63	100		250	400
Q2	m^3/h	0,32		0,504	0,8		2	3,2
Q1	m^3/h	0,2		0,315	0,5		1,25	2
Max. Reading	m^3	9999999,9
Min. Reading	m^3	0,0001
Max. Pressure	Bar	MAP16
Max. Temperate	ºC	T30 or T50

(For different Q3 and R, please contact with NWM manufacture).


MAX PERMISSION ERROR:
FOR CLASS I:
From Q1 inclusive up to but excluding Q2 is ± 1%;
From Q2 inclusive up to and including Q4 is ± 3%;

 

FOR CLASS II:
From Q1 inclusive up to but excluding Q2 is ± 2%;
From Q2 inclusive up to and including Q4 is ± 5%;