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Hot water meters
VSG water meter is designed for metering the volume of the hot
water flowing through it. It has a counting head with roll and pointer indicators.
VSG(d) - with pulse output.
.
Checklist: VSG hot water meter rotary with either internal diameter
Du 15...40 mm or turbine-type with internal diameter 50...250 mm.
Fluid
flow metering method: tachometer.
Calibration procedure: onsite.
Service life: not less than 12 years.
| SPECIFICATIONS |
VALUES | | Hot
water heater's passage diameter, mm | 15...250 |
Straight portion lengths:
to
the meter installation site, not less
after the site, not less
|
5 Du
1 Du
|
Fluid pressure loss in meters under Qmax, below, kPa
rotary-type
meters
turbine-type meters
|
100
10
| Maximum
water temperature, deg.
for meters with Du 25...250
for
meters with Du 15 and 20
|
150
90
| | Maximum water pressure,
MPa | 1.6 |
Water volume metering's basic relative error in the range of its
consumption
4 to 100%, % |
± 2
|
| Du, mm | 15 |
20 | 25 |
32 | 40 |
50 | 65 |
80 |
100 | 125 |
150 | 200 |
250 | Consumption
, m/h
Q min
Q max |
0.03
3
|
0.05
5
|
0.14
7
|
0.24
12
|
0.3
20
|
1.5
40
|
1.5
70
|
1.9
110
|
2.5
180
|
5.5
250
|
5.5
350
|
12
650
|
20
1200
|
| Du, mm |
15 | 20 |
25 | 32 |
40 | 50 |
65 | 80 |
100 | 125 |
150 | 200 |
250 | |
H, mm
L, mm
M, mm | 75
170
0.5 | 75
230
0.6
| 110
340
2.2 |
110
400
4.2 | 110
438
4.7 | 220
200
15 |
230
200
17 | 240
225
19 | 255
250
22 |
270
250
28 | 345
300
37 | 370
350
50 |
415
450
62 | |
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