|
For
main supply of large size pipes
Application:
Nowadays,
many large and medium size cities in the world are facing increasingly
worsening situation of water shortage, especially urban underground
water resource. The problem closely relates to extravagant consumption
of water by domestic users and public users and management departments
lack effective control means.
NEWSUN
Heavy-duty water meter (Model A and Model B) have been developed for
curing this problem.
Applicable standard:
GB/T 778-1996
Basic Technical Parameters for two models:
|
Ranges of Flow Rates |
|
Nominal Size(mm) |
Qs(m3/h) |
Qp(m3/h) |
Qt(m3/h) |
Qmin(m3/h) |
|
40 |
20 |
10 |
A1.0/B0.8 |
A0.3/B0.2 |
|
50 |
30 |
15 |
1.5 |
0.4 |
|
80 |
60 |
30 |
6.0 |
0.9 |
|
100 |
100 |
50 |
10 |
1.5 |
|
150 |
200 |
100 |
20 |
3.0 |
|
Qs:
Overload flow rate, the upper limit of flow rate under which the
meter works. At such rate, the meter only works for short time.
Qp:
Permanent flow rate, at such rate the meter can work for long time.
Qt:
Transitional flow rate, at such rate the meter’s error limit
changes.
Qmin:
Minimum flow rate, the lower limit of flow rate under which the
meter works. |
|
Meter installation dimensions for two models |
|
Nominal Size(mm) |
L(mm) |
B(mm) |
H(mm) |
D(mm) |
DO(mm) |
N(flange holes) |
|
40 |
245 |
Ф124 |
150 |
connected with pipe thread R1 1/2 |
|
50 |
280 |
Ф160 |
180 |
Ф125 |
Ф18 |
4 |
|
80 |
370 |
Ф316 |
275 |
Ф160 |
Ф18 |
4 |
|
100 |
370 |
Ф328 |
300 |
Ф180 |
Ф18 |
8 |
|
150 |
500 |
Ф406 |
388 |
Ф240 |
Ф23 |
8 |
Installation Guide:
l
Remote
water meter and control valve (for Model A) must be installed
horizontally and no inclination of dial face is allowed. Make sure
“arrow” mark in the body follow direction of water flow.
l
Make
sure water flow through the meter first and then the valve.
l
Straight pipe of certain length should be kept at both ends of the
meter, as per respective requirements of different meters.
l
Pipes
should be cleaned before installation.
l
Controller must be installed indoor or box, and kept away from rain,
sunlight, dust, heat, extra humid, caustic gas and heavy shaking.
l
Case of controller must be grounded properly.
Ordering Information:
l
Identify the right size of water meter.
l
Generally remote water meter of LXS vane wheel type is offered. Special
technical agreement will be signed for orders other than standard
offering.
l
20 meter signal cable is provided for standard offering. In special
cases, longer cable can be provided (max. 100 meters) as per requests.
Model A
 Structure:
Model A
Heavy-duty water meter consists of:
Meter
controller
Remote
meter (LXS vane wheel type, in blue color)
Control
valve (in black and grey)
PC water
vending management system.
Size ranges from
Ф40-150mm.
Control Valve:
|
Valve installation dimensions |
|
Nominal Size(mm) |
L(mm) |
H(mm) |
Connection |
|
D(mm) |
DO(mm) |
N(flange holes) |
|
40 |
150 |
135 |
Inner
thread G1 1/2 |
|
50 |
230 |
288 |
Ф125 |
Ф18 |
4 |
|
80 |
270 |
348 |
Ф160 |
Ф18 |
4 |
|
100 |
350 |
388 |
Ф180 |
Ф18 |
8 |
|
150 |
400 |
480 |
Ф240 |
Ф22 |
8 |
Power
supply: AC 220V (DC12V backup power supply for 72 hours)
Power
consumed: less than 10W
Six
digits LED: all time display of remaining volume of water
Minimum
display unit: cubic meter.
Model
B
Structure and Principle:
Model B
Heavy-duty water meter consists of:
Meter
controller (in grey)
Remote
meter (in blue)
PC water
vending management system.
The
controller consists of left box (circuit breaker) and right box (control
circuit).
PC
management system transfers water purchase data to controller via IC
card. The controller counters and accumulates signals from remote water
meter, and change status (On/Off) of breaker according to volume of
remaining water and line condition. Breaker is connected to power supply
of water-using equipment. Thus prepayment function is realized.
Under
circumstances of normal water supply, user pushes on breaker’s handle to
supply power. When purchased water tonnage is used up, breaker will turn
off and cut power supply to water-using equipment. To prevent illegal
water use, breaker turns off also when signal cable of the meter
disconnects or breaks.
Remote
water meter adopts anti-dithering magnetic-sensitive remote transmission
parts, which provide accurate and reliable counting and transmission of
over 100 meters. It also adopts full-sealing structure and keeps normal
working status when accidentally submerged in water.
Parameters of Controller:
Power
supply: AC 220V
Power
consumption: less than 10W
Six-digit
LED: all-time display of remaining water volume
Minimum
display unit: cubic meter
Breaker
capacity: 380V /100A
Water vending management system
Technical specifications and
parameters are subject to change without notice. |
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