Ultrasonic Meter

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  • The name :

    Ultrasonic bulk meter

  • Product Description
  • Dual beam ultrasonic technology for precise and
    ultra reliable metering
    No moving parts
    Excellent long-term stability and reliability
    Battery powered -10 years life expectancy
    Rugged mechanical design - Submersible (IP68)
    Extremely sensitive and accurate in low flows
    Turndown ratio - better then 1:400
    Flexible data formats including flow directions, flow rates, volumes and leak detection
    Alerts and statistics features
    AMR and cellular networks ready with various output model
    Programmable Display (units and outputs resolution)

  • Model : ULW

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

WORKING PRINCIPLES:

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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;

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Battery life: ≥4years; possible to keep the external Battery bag for easy to exchange;
AMR ready for RS485, M-BUS...;
Digital Display:

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m3: UNIT of Volume; m3/h: UNIT of Flow Rate
: Flow Direction
: Lower Battery

: Warning Signal

Keeping a magnet on the LCD at “LEFT- DOWN” location for at least 3 seconds, for changing menu from “member menu” to “Calibration menu”;

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With rectifying device

 

DIMENSION:

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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

Different Flange Standard for selecting such as: ISO 7005-2: 1998(E) PN16, ASME B16.1-Class 125 working for B16.5-Class 150…

Main Technical Data: ISO 4064 Class B

 

Size

mm

50

65

80

100

125

150

200

R

Q3/Q1

200

Q4

m3/h

50

78,75

125

312,5

500

Q3

m3/h

40

63

100

250

400

Q2

m3/h

0,32

0,504

0,8

2

3,2

Q1

m3/h

0,2

0,315

0,5

1,25

2

Max. Reading

m3

9999999,9

Min. Reading

m3

0,0001

Max. Pressure

Bar

MAP16

Max. Temperate

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%;

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Suggest to install the ULW water meter at U15 D5 (Straight pipe before the water meter at
15D, after the water meter at 5D);
Suggest to install the same size of the FILTER before the water meter;
Only for Horizontal installation;

OUTPUT for calibration:

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1=>VCC (DC5~12V) – RED (POWER +)
2=>NC;
3=> Pulse Signal Output (DC 0~5V) - YELLOW 4=>GND – BLUE (POWER -)

 


If you have any questions, please send an e-mail inquiry

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